diff --git a/Documentation/rbtree.txt b/Documentation/rbtree.txt index b9d9cc57be18..9fedfedfd85f 100644 --- a/Documentation/rbtree.txt +++ b/Documentation/rbtree.txt @@ -190,6 +190,39 @@ Example: for (node = rb_first(&mytree); node; node = rb_next(node)) printk("key=%s\n", rb_entry(node, struct mytype, node)->keystring);
+Cached rbtrees +-------------- + +Computing the leftmost (smallest) node is quite a common task for binary +search trees, such as for traversals or users relying on a the particular +order for their own logic. To this end, users can use 'struct rb_root_cached' +to optimize O(logN) rb_first() calls to a simple pointer fetch avoiding +potentially expensive tree iterations. This is done at negligible runtime +overhead for maintanence; albeit larger memory footprint. + +Similar to the rb_root structure, cached rbtrees are initialized to be +empty via: + + struct rb_root_cached mytree = RB_ROOT_CACHED; + +Cached rbtree is simply a regular rb_root with an extra pointer to cache the +leftmost node. This allows rb_root_cached to exist wherever rb_root does, +which permits augmented trees to be supported as well as only a few extra +interfaces: + + struct rb_node *rb_first_cached(struct rb_root_cached *tree); + void rb_insert_color_cached(struct rb_node *, struct rb_root_cached *, bool); + void rb_erase_cached(struct rb_node *node, struct rb_root_cached *); + +Both insert and erase calls have their respective counterpart of augmented +trees: + + void rb_insert_augmented_cached(struct rb_node *node, struct rb_root_cached *, + bool, struct rb_augment_callbacks *); + void rb_erase_augmented_cached(struct rb_node *, struct rb_root_cached *, + struct rb_augment_callbacks *); + + Support for Augmented rbtrees -----------------------------
diff --git a/Makefile b/Makefile index 70a11157b240..b0f683f18df7 100644 --- a/Makefile +++ b/Makefile @@ -1,6 +1,6 @@ VERSION = 4 PATCHLEVEL = 9 -SUBLEVEL = 297 +SUBLEVEL = 298 EXTRAVERSION = NAME = Roaring Lionus
diff --git a/arch/arm64/boot/dts/qcom/msm8916.dtsi b/arch/arm64/boot/dts/qcom/msm8916.dtsi index c2557cf43b3d..d8bf83d732be 100644 --- a/arch/arm64/boot/dts/qcom/msm8916.dtsi +++ b/arch/arm64/boot/dts/qcom/msm8916.dtsi @@ -25,8 +25,8 @@ #size-cells = <2>;
aliases { - sdhc1 = &sdhc_1; /* SDC1 eMMC slot */ - sdhc2 = &sdhc_2; /* SDC2 SD card slot */ + mmc0 = &sdhc_1; /* SDC1 eMMC slot */ + mmc1 = &sdhc_2; /* SDC2 SD card slot */ };
chosen { }; diff --git a/arch/mips/bcm63xx/clk.c b/arch/mips/bcm63xx/clk.c index 4f375050ab8e..3be875a45c83 100644 --- a/arch/mips/bcm63xx/clk.c +++ b/arch/mips/bcm63xx/clk.c @@ -342,6 +342,12 @@ struct clk *clk_get_parent(struct clk *clk) } EXPORT_SYMBOL(clk_get_parent);
+int clk_set_parent(struct clk *clk, struct clk *parent) +{ + return 0; +} +EXPORT_SYMBOL(clk_set_parent); + unsigned long clk_get_rate(struct clk *clk) { return clk->rate; diff --git a/arch/mips/include/asm/octeon/cvmx-bootinfo.h b/arch/mips/include/asm/octeon/cvmx-bootinfo.h index 62787765575e..ce6e5fddce0b 100644 --- a/arch/mips/include/asm/octeon/cvmx-bootinfo.h +++ b/arch/mips/include/asm/octeon/cvmx-bootinfo.h @@ -315,7 +315,7 @@ enum cvmx_chip_types_enum {
/* Functions to return string based on type */ #define ENUM_BRD_TYPE_CASE(x) \ - case x: return(#x + 16); /* Skip CVMX_BOARD_TYPE_ */ + case x: return (&#x[16]); /* Skip CVMX_BOARD_TYPE_ */ static inline const char *cvmx_board_type_to_string(enum cvmx_board_types_enum type) { @@ -404,7 +404,7 @@ static inline const char *cvmx_board_type_to_string(enum }
#define ENUM_CHIP_TYPE_CASE(x) \ - case x: return(#x + 15); /* Skip CVMX_CHIP_TYPE */ + case x: return (&#x[15]); /* Skip CVMX_CHIP_TYPE */ static inline const char *cvmx_chip_type_to_string(enum cvmx_chip_types_enum type) { diff --git a/arch/mips/lantiq/clk.c b/arch/mips/lantiq/clk.c index 149f0513c4f5..d1de57b86683 100644 --- a/arch/mips/lantiq/clk.c +++ b/arch/mips/lantiq/clk.c @@ -165,6 +165,12 @@ struct clk *of_clk_get_from_provider(struct of_phandle_args *clkspec) return NULL; }
+int clk_set_parent(struct clk *clk, struct clk *parent) +{ + return 0; +} +EXPORT_SYMBOL(clk_set_parent); + static inline u32 get_counter_resolution(void) { u32 res; diff --git a/arch/mips/mm/gup.c b/arch/mips/mm/gup.c index d8c3c159289a..71a19d20bbb7 100644 --- a/arch/mips/mm/gup.c +++ b/arch/mips/mm/gup.c @@ -271,7 +271,14 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write, next = pgd_addr_end(addr, end); if (pgd_none(pgd)) goto slow; - if (!gup_pud_range(pgd, addr, next, write, pages, &nr)) + /* + * The FAST_GUP case requires FOLL_WRITE even for pure reads, + * because get_user_pages() may need to cause an early COW in + * order to avoid confusing the normal COW routines. So only + * targets that are already writable are safe to do by just + * looking at the page tables. + */ + if (!gup_pud_range(pgd, addr, next, 1, pages, &nr)) goto slow; } while (pgdp++, addr = next, addr != end); local_irq_enable(); diff --git a/arch/parisc/kernel/traps.c b/arch/parisc/kernel/traps.c index 11c91697d5f9..5b41779de233 100644 --- a/arch/parisc/kernel/traps.c +++ b/arch/parisc/kernel/traps.c @@ -793,7 +793,7 @@ void notrace handle_interruption(int code, struct pt_regs *regs) * unless pagefault_disable() was called before. */
- if (fault_space == 0 && !faulthandler_disabled()) + if (faulthandler_disabled() || fault_space == 0) { /* Clean up and return if in exception table. */ if (fixup_exception(regs)) diff --git a/arch/powerpc/boot/dts/fsl/qoriq-fman3l-0.dtsi b/arch/powerpc/boot/dts/fsl/qoriq-fman3l-0.dtsi index 7f60b6060176..39b1c1fa0c81 100644 --- a/arch/powerpc/boot/dts/fsl/qoriq-fman3l-0.dtsi +++ b/arch/powerpc/boot/dts/fsl/qoriq-fman3l-0.dtsi @@ -78,6 +78,7 @@ fman0: fman@400000 { #size-cells = <0>; compatible = "fsl,fman-memac-mdio", "fsl,fman-xmdio"; reg = <0xfc000 0x1000>; + fsl,erratum-a009885; };
xmdio0: mdio@fd000 { @@ -85,6 +86,7 @@ fman0: fman@400000 { #size-cells = <0>; compatible = "fsl,fman-memac-mdio", "fsl,fman-xmdio"; reg = <0xfd000 0x1000>; + fsl,erratum-a009885; };
ptp_timer0: ptp-timer@fe000 { diff --git a/arch/powerpc/kernel/btext.c b/arch/powerpc/kernel/btext.c index 8275858a434d..2d91ba38b452 100644 --- a/arch/powerpc/kernel/btext.c +++ b/arch/powerpc/kernel/btext.c @@ -257,8 +257,10 @@ int __init btext_find_display(int allow_nonstdout) rc = btext_initialize(np); printk("result: %d\n", rc); } - if (rc == 0) + if (rc == 0) { + of_node_put(np); break; + } } return rc; } diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index 1e8c57207346..df3af10b8cc9 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -2528,7 +2528,7 @@ static void __init fixup_device_tree_efika_add_phy(void)
/* Check if the phy-handle property exists - bail if it does */ rv = prom_getprop(node, "phy-handle", prop, sizeof(prop)); - if (!rv) + if (rv <= 0) return;
/* diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index 9c6f3fd58059..31675c1d678b 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -759,10 +759,12 @@ void start_secondary(void *unused) BUG(); }
+#ifdef CONFIG_PROFILING int setup_profiling_timer(unsigned int multiplier) { return 0; } +#endif
#ifdef CONFIG_SCHED_SMT /* cpumask of CPUs with asymetric SMT dependancy */ diff --git a/arch/powerpc/platforms/cell/iommu.c b/arch/powerpc/platforms/cell/iommu.c index 7ff51f96a00e..8df43781f5db 100644 --- a/arch/powerpc/platforms/cell/iommu.c +++ b/arch/powerpc/platforms/cell/iommu.c @@ -1107,6 +1107,7 @@ static int __init cell_iommu_fixed_mapping_init(void) if (hbase < dbase || (hend > (dbase + dsize))) { pr_debug("iommu: hash window doesn't fit in" "real DMA window\n"); + of_node_put(np); return -1; } } diff --git a/arch/powerpc/platforms/embedded6xx/hlwd-pic.c b/arch/powerpc/platforms/embedded6xx/hlwd-pic.c index bf4a125faec6..db2ea6b6889d 100644 --- a/arch/powerpc/platforms/embedded6xx/hlwd-pic.c +++ b/arch/powerpc/platforms/embedded6xx/hlwd-pic.c @@ -220,6 +220,7 @@ void hlwd_pic_probe(void) irq_set_chained_handler(cascade_virq, hlwd_pic_irq_cascade); hlwd_irq_host = host; + of_node_put(np); break; } } diff --git a/arch/powerpc/platforms/powernv/opal-lpc.c b/arch/powerpc/platforms/powernv/opal-lpc.c index e4169d68cb32..d28c4a9269c3 100644 --- a/arch/powerpc/platforms/powernv/opal-lpc.c +++ b/arch/powerpc/platforms/powernv/opal-lpc.c @@ -401,6 +401,7 @@ void opal_lpc_init(void) if (!of_get_property(np, "primary", NULL)) continue; opal_lpc_chip_id = of_get_ibm_chip_id(np); + of_node_put(np); break; } if (opal_lpc_chip_id < 0) diff --git a/arch/s390/mm/gup.c b/arch/s390/mm/gup.c index cf045f56581e..be1e2ed6405d 100644 --- a/arch/s390/mm/gup.c +++ b/arch/s390/mm/gup.c @@ -261,7 +261,14 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write,
might_sleep(); start &= PAGE_MASK; - nr = __get_user_pages_fast(start, nr_pages, write, pages); + /* + * The FAST_GUP case requires FOLL_WRITE even for pure reads, + * because get_user_pages() may need to cause an early COW in + * order to avoid confusing the normal COW routines. So only + * targets that are already writable are safe to do by just + * looking at the page tables. + */ + nr = __get_user_pages_fast(start, nr_pages, 1, pages); if (nr == nr_pages) return nr;
diff --git a/arch/sh/mm/gup.c b/arch/sh/mm/gup.c index 063c298ba56c..7fec66e34af0 100644 --- a/arch/sh/mm/gup.c +++ b/arch/sh/mm/gup.c @@ -239,7 +239,14 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write, next = pgd_addr_end(addr, end); if (pgd_none(pgd)) goto slow; - if (!gup_pud_range(pgd, addr, next, write, pages, &nr)) + /* + * The FAST_GUP case requires FOLL_WRITE even for pure reads, + * because get_user_pages() may need to cause an early COW in + * order to avoid confusing the normal COW routines. So only + * targets that are already writable are safe to do by just + * looking at the page tables. + */ + if (!gup_pud_range(pgd, addr, next, 1, pages, &nr)) goto slow; } while (pgdp++, addr = next, addr != end); local_irq_enable(); diff --git a/arch/sparc/mm/gup.c b/arch/sparc/mm/gup.c index cd0e32bbcb1d..685679f87988 100644 --- a/arch/sparc/mm/gup.c +++ b/arch/sparc/mm/gup.c @@ -218,7 +218,14 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write, next = pgd_addr_end(addr, end); if (pgd_none(pgd)) goto slow; - if (!gup_pud_range(pgd, addr, next, write, pages, &nr)) + /* + * The FAST_GUP case requires FOLL_WRITE even for pure reads, + * because get_user_pages() may need to cause an early COW in + * order to avoid confusing the normal COW routines. So only + * targets that are already writable are safe to do by just + * looking at the page tables. + */ + if (!gup_pud_range(pgd, addr, next, 1, pages, &nr)) goto slow; } while (pgdp++, addr = next, addr != end);
diff --git a/arch/um/include/shared/registers.h b/arch/um/include/shared/registers.h index a74449b5b0e3..12ad7c435e97 100644 --- a/arch/um/include/shared/registers.h +++ b/arch/um/include/shared/registers.h @@ -16,8 +16,8 @@ extern int restore_fp_registers(int pid, unsigned long *fp_regs); extern int save_fpx_registers(int pid, unsigned long *fp_regs); extern int restore_fpx_registers(int pid, unsigned long *fp_regs); extern int save_registers(int pid, struct uml_pt_regs *regs); -extern int restore_registers(int pid, struct uml_pt_regs *regs); -extern int init_registers(int pid); +extern int restore_pid_registers(int pid, struct uml_pt_regs *regs); +extern int init_pid_registers(int pid); extern void get_safe_registers(unsigned long *regs, unsigned long *fp_regs); extern unsigned long get_thread_reg(int reg, jmp_buf *buf); extern int get_fp_registers(int pid, unsigned long *regs); diff --git a/arch/um/os-Linux/registers.c b/arch/um/os-Linux/registers.c index 2ff8d4fe83c4..34a5963bd7ef 100644 --- a/arch/um/os-Linux/registers.c +++ b/arch/um/os-Linux/registers.c @@ -21,7 +21,7 @@ int save_registers(int pid, struct uml_pt_regs *regs) return 0; }
-int restore_registers(int pid, struct uml_pt_regs *regs) +int restore_pid_registers(int pid, struct uml_pt_regs *regs) { int err;
@@ -36,7 +36,7 @@ int restore_registers(int pid, struct uml_pt_regs *regs) static unsigned long exec_regs[MAX_REG_NR]; static unsigned long exec_fp_regs[FP_SIZE];
-int init_registers(int pid) +int init_pid_registers(int pid) { int err;
diff --git a/arch/um/os-Linux/start_up.c b/arch/um/os-Linux/start_up.c index 22a358ef1b0c..dc06933ba63d 100644 --- a/arch/um/os-Linux/start_up.c +++ b/arch/um/os-Linux/start_up.c @@ -334,7 +334,7 @@ void __init os_early_checks(void) check_tmpexec();
pid = start_ptraced_child(); - if (init_registers(pid)) + if (init_pid_registers(pid)) fatal("Failed to initialize default registers"); stop_ptraced_child(pid, 1, 1); } diff --git a/arch/x86/mm/gup.c b/arch/x86/mm/gup.c index 82f727fbbbd2..549f89fb3abc 100644 --- a/arch/x86/mm/gup.c +++ b/arch/x86/mm/gup.c @@ -454,7 +454,14 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write, next = pgd_addr_end(addr, end); if (pgd_none(pgd)) goto slow; - if (!gup_pud_range(pgd, addr, next, write, pages, &nr)) + /* + * The FAST_GUP case requires FOLL_WRITE even for pure reads, + * because get_user_pages() may need to cause an early COW in + * order to avoid confusing the normal COW routines. So only + * targets that are already writable are safe to do by just + * looking at the page tables. + */ + if (!gup_pud_range(pgd, addr, next, 1, pages, &nr)) goto slow; } while (pgdp++, addr = next, addr != end); local_irq_enable(); diff --git a/arch/x86/um/syscalls_64.c b/arch/x86/um/syscalls_64.c index e6552275320b..40ecacb2c54b 100644 --- a/arch/x86/um/syscalls_64.c +++ b/arch/x86/um/syscalls_64.c @@ -9,6 +9,7 @@ #include <linux/uaccess.h> #include <asm/prctl.h> /* XXX This should get the constants from libc */ #include <os.h> +#include <registers.h>
long arch_prctl(struct task_struct *task, int code, unsigned long __user *addr) { @@ -32,7 +33,7 @@ long arch_prctl(struct task_struct *task, int code, unsigned long __user *addr) switch (code) { case ARCH_SET_FS: case ARCH_SET_GS: - ret = restore_registers(pid, ¤t->thread.regs.regs); + ret = restore_pid_registers(pid, ¤t->thread.regs.regs); if (ret) return ret; break; diff --git a/drivers/acpi/acpica/exoparg1.c b/drivers/acpi/acpica/exoparg1.c index 007300433cde..1cea26a74147 100644 --- a/drivers/acpi/acpica/exoparg1.c +++ b/drivers/acpi/acpica/exoparg1.c @@ -1029,7 +1029,8 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state) (walk_state, return_desc, &temp_desc); if (ACPI_FAILURE(status)) { - goto cleanup; + return_ACPI_STATUS + (status); }
return_desc = temp_desc; diff --git a/drivers/acpi/acpica/utdelete.c b/drivers/acpi/acpica/utdelete.c index 03a2282ceb9c..81a9c47973ce 100644 --- a/drivers/acpi/acpica/utdelete.c +++ b/drivers/acpi/acpica/utdelete.c @@ -440,6 +440,7 @@ acpi_ut_update_ref_count(union acpi_operand_object *object, u32 action) ACPI_WARNING((AE_INFO, "Obj %p, Reference Count is already zero, cannot decrement\n", object)); + return; }
ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index 4496e7a49235..7164be9710e5 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -994,7 +994,7 @@ static DECLARE_DELAYED_WORK(fd_timer, fd_timer_workfn); static void cancel_activity(void) { do_floppy = NULL; - cancel_delayed_work_sync(&fd_timer); + cancel_delayed_work(&fd_timer); cancel_work_sync(&floppy_work); }
@@ -3116,6 +3116,8 @@ static void raw_cmd_free(struct floppy_raw_cmd **ptr) } }
+#define MAX_LEN (1UL << MAX_ORDER << PAGE_SHIFT) + static int raw_cmd_copyin(int cmd, void __user *param, struct floppy_raw_cmd **rcmd) { @@ -3153,7 +3155,7 @@ static int raw_cmd_copyin(int cmd, void __user *param, ptr->resultcode = 0;
if (ptr->flags & (FD_RAW_READ | FD_RAW_WRITE)) { - if (ptr->length <= 0) + if (ptr->length <= 0 || ptr->length >= MAX_LEN) return -EINVAL; ptr->kernel_data = (char *)fd_dma_mem_alloc(ptr->length); fallback_on_nodma_alloc(&ptr->kernel_data, ptr->length); diff --git a/drivers/bluetooth/bfusb.c b/drivers/bluetooth/bfusb.c index 3bf4ec60e073..cee2de027e5a 100644 --- a/drivers/bluetooth/bfusb.c +++ b/drivers/bluetooth/bfusb.c @@ -644,6 +644,9 @@ static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *i data->bulk_out_ep = bulk_out_ep->desc.bEndpointAddress; data->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize);
+ if (!data->bulk_pkt_size) + goto done; + rwlock_init(&data->lock);
data->reassembly = NULL; diff --git a/drivers/char/mwave/3780i.h b/drivers/char/mwave/3780i.h index 9ccb6b270b07..95164246afd1 100644 --- a/drivers/char/mwave/3780i.h +++ b/drivers/char/mwave/3780i.h @@ -68,7 +68,7 @@ typedef struct { unsigned char ClockControl:1; /* RW: Clock control: 0=normal, 1=stop 3780i clocks */ unsigned char SoftReset:1; /* RW: Soft reset 0=normal, 1=soft reset active */ unsigned char ConfigMode:1; /* RW: Configuration mode, 0=normal, 1=config mode */ - unsigned char Reserved:5; /* 0: Reserved */ + unsigned short Reserved:13; /* 0: Reserved */ } DSP_ISA_SLAVE_CONTROL;
diff --git a/drivers/char/random.c b/drivers/char/random.c index 2184d8762327..70ee86e034fc 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -845,8 +845,8 @@ static void do_numa_crng_init(struct work_struct *work) crng_initialize(crng); pool[i] = crng; } - mb(); - if (cmpxchg(&crng_node_pool, NULL, pool)) { + /* pairs with READ_ONCE() in select_crng() */ + if (cmpxchg_release(&crng_node_pool, NULL, pool) != NULL) { for_each_node(i) kfree(pool[i]); kfree(pool); @@ -859,8 +859,26 @@ static void numa_crng_init(void) { schedule_work(&numa_crng_init_work); } + +static struct crng_state *select_crng(void) +{ + struct crng_state **pool; + int nid = numa_node_id(); + + /* pairs with cmpxchg_release() in do_numa_crng_init() */ + pool = READ_ONCE(crng_node_pool); + if (pool && pool[nid]) + return pool[nid]; + + return &primary_crng; +} #else static void numa_crng_init(void) {} + +static struct crng_state *select_crng(void) +{ + return &primary_crng; +} #endif
static void crng_reseed(struct crng_state *crng, struct entropy_store *r) @@ -890,7 +908,7 @@ static void crng_reseed(struct crng_state *crng, struct entropy_store *r) crng->state[i+4] ^= buf.key[i] ^ rv; } memzero_explicit(&buf, sizeof(buf)); - crng->init_time = jiffies; + WRITE_ONCE(crng->init_time, jiffies); if (crng == &primary_crng && crng_init < 2) { numa_crng_init(); crng_init = 2; @@ -928,12 +946,15 @@ static inline void crng_wait_ready(void) static void _extract_crng(struct crng_state *crng, __u8 out[CHACHA20_BLOCK_SIZE]) { - unsigned long v, flags; - - if (crng_ready() && - (time_after(crng_global_init_time, crng->init_time) || - time_after(jiffies, crng->init_time + CRNG_RESEED_INTERVAL))) - crng_reseed(crng, crng == &primary_crng ? &input_pool : NULL); + unsigned long v, flags, init_time; + + if (crng_ready()) { + init_time = READ_ONCE(crng->init_time); + if (time_after(READ_ONCE(crng_global_init_time), init_time) || + time_after(jiffies, init_time + CRNG_RESEED_INTERVAL)) + crng_reseed(crng, crng == &primary_crng ? + &input_pool : NULL); + } spin_lock_irqsave(&crng->lock, flags); if (arch_get_random_long(&v)) crng->state[14] ^= v; @@ -945,15 +966,7 @@ static void _extract_crng(struct crng_state *crng,
static void extract_crng(__u8 out[CHACHA20_BLOCK_SIZE]) { - struct crng_state *crng = NULL; - -#ifdef CONFIG_NUMA - if (crng_node_pool) - crng = crng_node_pool[numa_node_id()]; - if (crng == NULL) -#endif - crng = &primary_crng; - _extract_crng(crng, out); + _extract_crng(select_crng(), out); }
/* @@ -982,15 +995,7 @@ static void _crng_backtrack_protect(struct crng_state *crng,
static void crng_backtrack_protect(__u8 tmp[CHACHA20_BLOCK_SIZE], int used) { - struct crng_state *crng = NULL; - -#ifdef CONFIG_NUMA - if (crng_node_pool) - crng = crng_node_pool[numa_node_id()]; - if (crng == NULL) -#endif - crng = &primary_crng; - _crng_backtrack_protect(crng, tmp, used); + _crng_backtrack_protect(select_crng(), tmp, used); }
static ssize_t extract_crng_user(void __user *buf, size_t nbytes) @@ -1914,7 +1919,7 @@ static long random_ioctl(struct file *f, unsigned int cmd, unsigned long arg) if (crng_init < 2) return -ENODATA; crng_reseed(&primary_crng, &input_pool); - crng_global_init_time = jiffies - 1; + WRITE_ONCE(crng_global_init_time, jiffies - 1); return 0; default: return -EINVAL; diff --git a/drivers/crypto/qce/sha.c b/drivers/crypto/qce/sha.c index 47e114ac09d0..ff1e788f9276 100644 --- a/drivers/crypto/qce/sha.c +++ b/drivers/crypto/qce/sha.c @@ -544,8 +544,8 @@ static int qce_ahash_register_one(const struct qce_ahash_def *def,
ret = crypto_register_ahash(alg); if (ret) { - kfree(tmpl); dev_err(qce->dev, "%s registration failed\n", base->cra_name); + kfree(tmpl); return ret; }
diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c index a505be9ef96d..c15ca560fe60 100644 --- a/drivers/dma/at_xdmac.c +++ b/drivers/dma/at_xdmac.c @@ -100,6 +100,7 @@ #define AT_XDMAC_CNDC_NDE (0x1 << 0) /* Channel x Next Descriptor Enable */ #define AT_XDMAC_CNDC_NDSUP (0x1 << 1) /* Channel x Next Descriptor Source Update */ #define AT_XDMAC_CNDC_NDDUP (0x1 << 2) /* Channel x Next Descriptor Destination Update */ +#define AT_XDMAC_CNDC_NDVIEW_MASK GENMASK(28, 27) #define AT_XDMAC_CNDC_NDVIEW_NDV0 (0x0 << 3) /* Channel x Next Descriptor View 0 */ #define AT_XDMAC_CNDC_NDVIEW_NDV1 (0x1 << 3) /* Channel x Next Descriptor View 1 */ #define AT_XDMAC_CNDC_NDVIEW_NDV2 (0x2 << 3) /* Channel x Next Descriptor View 2 */ @@ -232,15 +233,15 @@ struct at_xdmac {
/* Linked List Descriptor */ struct at_xdmac_lld { - dma_addr_t mbr_nda; /* Next Descriptor Member */ - u32 mbr_ubc; /* Microblock Control Member */ - dma_addr_t mbr_sa; /* Source Address Member */ - dma_addr_t mbr_da; /* Destination Address Member */ - u32 mbr_cfg; /* Configuration Register */ - u32 mbr_bc; /* Block Control Register */ - u32 mbr_ds; /* Data Stride Register */ - u32 mbr_sus; /* Source Microblock Stride Register */ - u32 mbr_dus; /* Destination Microblock Stride Register */ + u32 mbr_nda; /* Next Descriptor Member */ + u32 mbr_ubc; /* Microblock Control Member */ + u32 mbr_sa; /* Source Address Member */ + u32 mbr_da; /* Destination Address Member */ + u32 mbr_cfg; /* Configuration Register */ + u32 mbr_bc; /* Block Control Register */ + u32 mbr_ds; /* Data Stride Register */ + u32 mbr_sus; /* Source Microblock Stride Register */ + u32 mbr_dus; /* Destination Microblock Stride Register */ };
/* 64-bit alignment needed to update CNDA and CUBC registers in an atomic way. */ @@ -345,9 +346,6 @@ static void at_xdmac_start_xfer(struct at_xdmac_chan *atchan,
dev_vdbg(chan2dev(&atchan->chan), "%s: desc 0x%p\n", __func__, first);
- if (at_xdmac_chan_is_enabled(atchan)) - return; - /* Set transfer as active to not try to start it again. */ first->active_xfer = true;
@@ -363,7 +361,8 @@ static void at_xdmac_start_xfer(struct at_xdmac_chan *atchan, */ if (at_xdmac_chan_is_cyclic(atchan)) reg = AT_XDMAC_CNDC_NDVIEW_NDV1; - else if (first->lld.mbr_ubc & AT_XDMAC_MBR_UBC_NDV3) + else if ((first->lld.mbr_ubc & + AT_XDMAC_CNDC_NDVIEW_MASK) == AT_XDMAC_MBR_UBC_NDV3) reg = AT_XDMAC_CNDC_NDVIEW_NDV3; else reg = AT_XDMAC_CNDC_NDVIEW_NDV2; @@ -428,13 +427,12 @@ static dma_cookie_t at_xdmac_tx_submit(struct dma_async_tx_descriptor *tx) spin_lock_irqsave(&atchan->lock, irqflags); cookie = dma_cookie_assign(tx);
+ list_add_tail(&desc->xfer_node, &atchan->xfers_list); + spin_unlock_irqrestore(&atchan->lock, irqflags); + dev_vdbg(chan2dev(tx->chan), "%s: atchan 0x%p, add desc 0x%p to xfers_list\n", __func__, atchan, desc); - list_add_tail(&desc->xfer_node, &atchan->xfers_list); - if (list_is_singular(&atchan->xfers_list)) - at_xdmac_start_xfer(atchan, desc);
- spin_unlock_irqrestore(&atchan->lock, irqflags); return cookie; }
diff --git a/drivers/dma/mmp_pdma.c b/drivers/dma/mmp_pdma.c index eb3a1f42ab06..e8b2d3e31de8 100644 --- a/drivers/dma/mmp_pdma.c +++ b/drivers/dma/mmp_pdma.c @@ -722,12 +722,6 @@ static int mmp_pdma_config(struct dma_chan *dchan,
chan->dir = cfg->direction; chan->dev_addr = addr; - /* FIXME: drivers should be ported over to use the filter - * function. Once that's done, the following two lines can - * be removed. - */ - if (cfg->slave_id) - chan->drcmr = cfg->slave_id;
return 0; } diff --git a/drivers/dma/pxa_dma.c b/drivers/dma/pxa_dma.c index 3f56f9ca4482..5bd1ade187d3 100644 --- a/drivers/dma/pxa_dma.c +++ b/drivers/dma/pxa_dma.c @@ -975,13 +975,6 @@ static void pxad_get_config(struct pxad_chan *chan, *dcmd |= PXA_DCMD_BURST16; else if (maxburst == 32) *dcmd |= PXA_DCMD_BURST32; - - /* FIXME: drivers should be ported over to use the filter - * function. Once that's done, the following two lines can - * be removed. - */ - if (chan->cfg.slave_id) - chan->drcmr = chan->cfg.slave_id; }
static struct dma_async_tx_descriptor * diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c index 986248f7011a..c479280590e4 100644 --- a/drivers/gpio/gpiolib-acpi.c +++ b/drivers/gpio/gpiolib-acpi.c @@ -675,10 +675,17 @@ int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index) irq_flags = acpi_dev_get_irq_type(info.triggering, info.polarity);
- /* Set type if specified and different than the current one */ - if (irq_flags != IRQ_TYPE_NONE && - irq_flags != irq_get_trigger_type(irq)) - irq_set_irq_type(irq, irq_flags); + /* + * If the IRQ is not already in use then set type + * if specified and different than the current one. + */ + if (can_request_irq(irq, irq_flags)) { + if (irq_flags != IRQ_TYPE_NONE && + irq_flags != irq_get_trigger_type(irq)) + irq_set_irq_type(irq, irq_flags); + } else { + dev_dbg(&adev->dev, "IRQ %d already in use\n", irq); + }
return irq; } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c index eb79d0d3d34f..7264169d5f2a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c @@ -404,6 +404,9 @@ amdgpu_connector_lcd_native_mode(struct drm_encoder *encoder) native_mode->vdisplay != 0 && native_mode->clock != 0) { mode = drm_mode_duplicate(dev, native_mode); + if (!mode) + return NULL; + mode->type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER; drm_mode_set_name(mode);
@@ -418,6 +421,9 @@ amdgpu_connector_lcd_native_mode(struct drm_encoder *encoder) * simpler. */ mode = drm_cvt_mode(dev, native_mode->hdisplay, native_mode->vdisplay, 60, true, false, false); + if (!mode) + return NULL; + mode->type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER; DRM_DEBUG_KMS("Adding cvt approximation of native panel mode %s\n", mode->name); } diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 07d2a8e7f78c..202c00b17df2 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -2274,9 +2274,9 @@ static void snb_wm_latency_quirk(struct drm_device *dev) * The BIOS provided WM memory latency values are often * inadequate for high resolution displays. Adjust them. */ - changed = ilk_increase_wm_latency(dev_priv, dev_priv->wm.pri_latency, 12) | - ilk_increase_wm_latency(dev_priv, dev_priv->wm.spr_latency, 12) | - ilk_increase_wm_latency(dev_priv, dev_priv->wm.cur_latency, 12); + changed = ilk_increase_wm_latency(dev_priv, dev_priv->wm.pri_latency, 12); + changed |= ilk_increase_wm_latency(dev_priv, dev_priv->wm.spr_latency, 12); + changed |= ilk_increase_wm_latency(dev_priv, dev_priv->wm.cur_latency, 12);
if (!changed) return; diff --git a/drivers/gpu/drm/nouveau/nouveau_sgdma.c b/drivers/gpu/drm/nouveau/nouveau_sgdma.c index db35ab5883ac..d3bfd7912a99 100644 --- a/drivers/gpu/drm/nouveau/nouveau_sgdma.c +++ b/drivers/gpu/drm/nouveau/nouveau_sgdma.c @@ -105,12 +105,9 @@ nouveau_sgdma_create_ttm(struct ttm_bo_device *bdev, else nvbe->ttm.ttm.func = &nv50_sgdma_backend;
- if (ttm_dma_tt_init(&nvbe->ttm, bdev, size, page_flags, dummy_read_page)) - /* - * A failing ttm_dma_tt_init() will call ttm_tt_destroy() - * and thus our nouveau_sgdma_destroy() hook, so we don't need - * to free nvbe here. - */ + if (ttm_dma_tt_init(&nvbe->ttm, bdev, size, page_flags, dummy_read_page)) { + kfree(nvbe); return NULL; + } return &nvbe->ttm.ttm; } diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c index 61000e3b2e79..b55403c99d80 100644 --- a/drivers/gpu/drm/radeon/radeon_kms.c +++ b/drivers/gpu/drm/radeon/radeon_kms.c @@ -630,6 +630,8 @@ void radeon_driver_lastclose_kms(struct drm_device *dev) int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv) { struct radeon_device *rdev = dev->dev_private; + struct radeon_fpriv *fpriv; + struct radeon_vm *vm; int r;
file_priv->driver_priv = NULL; @@ -642,48 +644,52 @@ int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
/* new gpu have virtual address space support */ if (rdev->family >= CHIP_CAYMAN) { - struct radeon_fpriv *fpriv; - struct radeon_vm *vm;
fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL); if (unlikely(!fpriv)) { r = -ENOMEM; - goto out_suspend; + goto err_suspend; }
if (rdev->accel_working) { vm = &fpriv->vm; r = radeon_vm_init(rdev, vm); - if (r) { - kfree(fpriv); - goto out_suspend; - } + if (r) + goto err_fpriv;
r = radeon_bo_reserve(rdev->ring_tmp_bo.bo, false); - if (r) { - radeon_vm_fini(rdev, vm); - kfree(fpriv); - goto out_suspend; - } + if (r) + goto err_vm_fini;
/* map the ib pool buffer read only into * virtual address space */ vm->ib_bo_va = radeon_vm_bo_add(rdev, vm, rdev->ring_tmp_bo.bo); + if (!vm->ib_bo_va) { + r = -ENOMEM; + goto err_vm_fini; + } + r = radeon_vm_bo_set_addr(rdev, vm->ib_bo_va, RADEON_VA_IB_OFFSET, RADEON_VM_PAGE_READABLE | RADEON_VM_PAGE_SNOOPED); - if (r) { - radeon_vm_fini(rdev, vm); - kfree(fpriv); - goto out_suspend; - } + if (r) + goto err_vm_fini; } file_priv->driver_priv = fpriv; }
-out_suspend: + pm_runtime_mark_last_busy(dev->dev); + pm_runtime_put_autosuspend(dev->dev); + return 0; + +err_vm_fini: + radeon_vm_fini(rdev, vm); +err_fpriv: + kfree(fpriv); + +err_suspend: pm_runtime_mark_last_busy(dev->dev); pm_runtime_put_autosuspend(dev->dev); return r; diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c index aee3c00f836e..e4e24be52353 100644 --- a/drivers/gpu/drm/ttm/ttm_tt.c +++ b/drivers/gpu/drm/ttm/ttm_tt.c @@ -195,7 +195,6 @@ int ttm_tt_init(struct ttm_tt *ttm, struct ttm_bo_device *bdev,
ttm_tt_alloc_page_directory(ttm); if (!ttm->pages) { - ttm_tt_destroy(ttm); pr_err("Failed allocating page table\n"); return -ENOMEM; } @@ -228,7 +227,6 @@ int ttm_dma_tt_init(struct ttm_dma_tt *ttm_dma, struct ttm_bo_device *bdev, INIT_LIST_HEAD(&ttm_dma->pages_list); ttm_dma_tt_alloc_page_directory(ttm_dma); if (!ttm->pages) { - ttm_tt_destroy(ttm); pr_err("Failed allocating page table\n"); return -ENOMEM; } diff --git a/drivers/hid/hid-apple.c b/drivers/hid/hid-apple.c index 149902619cbc..0074091c27aa 100644 --- a/drivers/hid/hid-apple.c +++ b/drivers/hid/hid-apple.c @@ -390,7 +390,7 @@ static int apple_input_configured(struct hid_device *hdev,
if ((asc->quirks & APPLE_HAS_FN) && !asc->fn_found) { hid_info(hdev, "Fn key not found (Apple Wireless Keyboard clone?), disabling Fn key handling\n"); - asc->quirks = 0; + asc->quirks &= ~APPLE_HAS_FN; }
return 0; diff --git a/drivers/hid/uhid.c b/drivers/hid/uhid.c index e60e41e77502..f7705a057f0f 100644 --- a/drivers/hid/uhid.c +++ b/drivers/hid/uhid.c @@ -33,11 +33,22 @@
struct uhid_device { struct mutex devlock; + + /* This flag tracks whether the HID device is usable for commands from + * userspace. The flag is already set before hid_add_device(), which + * runs in workqueue context, to allow hid_add_device() to communicate + * with userspace. + * However, if hid_add_device() fails, the flag is cleared without + * holding devlock. + * We guarantee that if @running changes from true to false while you're + * holding @devlock, it's still fine to access @hid. + */ bool running;
__u8 *rd_data; uint rd_size;
+ /* When this is NULL, userspace may use UHID_CREATE/UHID_CREATE2. */ struct hid_device *hid; struct uhid_event input_buf;
@@ -68,9 +79,18 @@ static void uhid_device_add_worker(struct work_struct *work) if (ret) { hid_err(uhid->hid, "Cannot register HID device: error %d\n", ret);
- hid_destroy_device(uhid->hid); - uhid->hid = NULL; + /* We used to call hid_destroy_device() here, but that's really + * messy to get right because we have to coordinate with + * concurrent writes from userspace that might be in the middle + * of using uhid->hid. + * Just leave uhid->hid as-is for now, and clean it up when + * userspace tries to close or reinitialize the uhid instance. + * + * However, we do have to clear the ->running flag and do a + * wakeup to make sure userspace knows that the device is gone. + */ uhid->running = false; + wake_up_interruptible(&uhid->report_wait); } }
@@ -479,7 +499,7 @@ static int uhid_dev_create2(struct uhid_device *uhid, void *rd_data; int ret;
- if (uhid->running) + if (uhid->hid) return -EALREADY;
rd_size = ev->u.create2.rd_size; @@ -560,7 +580,7 @@ static int uhid_dev_create(struct uhid_device *uhid,
static int uhid_dev_destroy(struct uhid_device *uhid) { - if (!uhid->running) + if (!uhid->hid) return -EINVAL;
uhid->running = false; @@ -569,6 +589,7 @@ static int uhid_dev_destroy(struct uhid_device *uhid) cancel_work_sync(&uhid->worker);
hid_destroy_device(uhid->hid); + uhid->hid = NULL; kfree(uhid->rd_data);
return 0; diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c index fbf14a14bdd4..bfce62dbe0ac 100644 --- a/drivers/hid/wacom_wac.c +++ b/drivers/hid/wacom_wac.c @@ -1693,6 +1693,10 @@ static void wacom_wac_finger_pre_report(struct hid_device *hdev, struct hid_data* hid_data = &wacom_wac->hid_data; int i;
+ hid_data->cc_report = 0; + hid_data->cc_index = -1; + hid_data->cc_value_index = -1; + for (i = 0; i < report->maxfield; i++) { struct hid_field *field = report->field[i]; int j; diff --git a/drivers/hsi/hsi_core.c b/drivers/hsi/hsi_core.c index e9d63b966caf..4a9fd745b8cb 100644 --- a/drivers/hsi/hsi_core.c +++ b/drivers/hsi/hsi_core.c @@ -115,6 +115,7 @@ struct hsi_client *hsi_new_client(struct hsi_port *port, if (device_register(&cl->device) < 0) { pr_err("hsi: failed to register client: %s\n", info->name); put_device(&cl->device); + goto err; }
return cl; diff --git a/drivers/i2c/busses/i2c-designware-pcidrv.c b/drivers/i2c/busses/i2c-designware-pcidrv.c index 96f8230cd2d3..5c32a7ef476d 100644 --- a/drivers/i2c/busses/i2c-designware-pcidrv.c +++ b/drivers/i2c/busses/i2c-designware-pcidrv.c @@ -49,10 +49,10 @@ enum dw_pci_ctl_id_t { };
struct dw_scl_sda_cfg { - u32 ss_hcnt; - u32 fs_hcnt; - u32 ss_lcnt; - u32 fs_lcnt; + u16 ss_hcnt; + u16 fs_hcnt; + u16 ss_lcnt; + u16 fs_lcnt; u32 sda_hold; };
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index 0e04b27e3158..b577c64f3b3e 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c @@ -762,6 +762,11 @@ static int i801_block_transaction(struct i801_priv *priv, int result = 0; unsigned char hostc;
+ if (read_write == I2C_SMBUS_READ && command == I2C_SMBUS_BLOCK_DATA) + data->block[0] = I2C_SMBUS_BLOCK_MAX; + else if (data->block[0] < 1 || data->block[0] > I2C_SMBUS_BLOCK_MAX) + return -EPROTO; + if (command == I2C_SMBUS_I2C_BLOCK_DATA) { if (read_write == I2C_SMBUS_WRITE) { /* set I2C_EN bit in configuration register */ @@ -775,16 +780,6 @@ static int i801_block_transaction(struct i801_priv *priv, } }
- if (read_write == I2C_SMBUS_WRITE - || command == I2C_SMBUS_I2C_BLOCK_DATA) { - if (data->block[0] < 1) - data->block[0] = 1; - if (data->block[0] > I2C_SMBUS_BLOCK_MAX) - data->block[0] = I2C_SMBUS_BLOCK_MAX; - } else { - data->block[0] = 32; /* max for SMBus block reads */ - } - /* Experience has shown that the block buffer can only be used for SMBus (not I2C) block transactions, even though the datasheet doesn't mention this limitation. */ diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c index 90e4f839eb1c..d153fc28e6bf 100644 --- a/drivers/i2c/busses/i2c-mpc.c +++ b/drivers/i2c/busses/i2c-mpc.c @@ -107,23 +107,30 @@ static irqreturn_t mpc_i2c_isr(int irq, void *dev_id) /* Sometimes 9th clock pulse isn't generated, and slave doesn't release * the bus, because it wants to send ACK. * Following sequence of enabling/disabling and sending start/stop generates - * the 9 pulses, so it's all OK. + * the 9 pulses, each with a START then ending with STOP, so it's all OK. */ static void mpc_i2c_fixup(struct mpc_i2c *i2c) { int k; - u32 delay_val = 1000000 / i2c->real_clk + 1; - - if (delay_val < 2) - delay_val = 2; + unsigned long flags;
for (k = 9; k; k--) { writeccr(i2c, 0); - writeccr(i2c, CCR_MSTA | CCR_MTX | CCR_MEN); + writeb(0, i2c->base + MPC_I2C_SR); /* clear any status bits */ + writeccr(i2c, CCR_MEN | CCR_MSTA); /* START */ + readb(i2c->base + MPC_I2C_DR); /* init xfer */ + udelay(15); /* let it hit the bus */ + local_irq_save(flags); /* should not be delayed further */ + writeccr(i2c, CCR_MEN | CCR_MSTA | CCR_RSTA); /* delay SDA */ readb(i2c->base + MPC_I2C_DR); - writeccr(i2c, CCR_MEN); - udelay(delay_val << 1); + if (k != 1) + udelay(5); + local_irq_restore(flags); } + writeccr(i2c, CCR_MEN); /* Initiate STOP */ + readb(i2c->base + MPC_I2C_DR); + udelay(15); /* Let STOP propagate */ + writeccr(i2c, 0); }
static int i2c_wait(struct mpc_i2c *i2c, unsigned timeout, int writing) diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c index 4b947d5cafe2..c5c175b72f21 100644 --- a/drivers/infiniband/core/device.c +++ b/drivers/infiniband/core/device.c @@ -870,7 +870,8 @@ int ib_find_gid(struct ib_device *device, union ib_gid *gid, for (i = 0; i < device->port_immutable[port].gid_tbl_len; ++i) { ret = ib_query_gid(device, port, i, &tmp_gid, NULL); if (ret) - return ret; + continue; + if (!memcmp(&tmp_gid, gid, sizeof *gid)) { *port_num = port; if (index) diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c index 87bc7b0db892..2eeac8401c92 100644 --- a/drivers/infiniband/hw/cxgb4/qp.c +++ b/drivers/infiniband/hw/cxgb4/qp.c @@ -1974,6 +1974,7 @@ int c4iw_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, memset(attr, 0, sizeof *attr); memset(init_attr, 0, sizeof *init_attr); attr->qp_state = to_ib_qp_state(qhp->attr.state); + attr->cur_qp_state = to_ib_qp_state(qhp->attr.state); init_attr->cap.max_send_wr = qhp->attr.sq_num_entries; init_attr->cap.max_recv_wr = qhp->attr.rq_num_entries; init_attr->cap.max_send_sge = qhp->attr.sq_max_sges; diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c index 764e35a54457..0aa2400db8fa 100644 --- a/drivers/infiniband/hw/hns/hns_roce_main.c +++ b/drivers/infiniband/hw/hns/hns_roce_main.c @@ -475,6 +475,9 @@ static int hns_roce_query_gid(struct ib_device *ib_dev, u8 port_num, int index, static int hns_roce_query_pkey(struct ib_device *ib_dev, u8 port, u16 index, u16 *pkey) { + if (index > 0) + return -EINVAL; + *pkey = PKEY_ID;
return 0; @@ -553,7 +556,7 @@ static int hns_roce_mmap(struct ib_ucontext *context, return -EINVAL;
if (vma->vm_pgoff == 0) { - vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); + vma->vm_page_prot = pgprot_device(vma->vm_page_prot); if (io_remap_pfn_range(vma, vma->vm_start, to_hr_ucontext(context)->uar.pfn, PAGE_SIZE, vma->vm_page_prot)) diff --git a/drivers/infiniband/sw/rxe/rxe_opcode.c b/drivers/infiniband/sw/rxe/rxe_opcode.c index 61927c165b59..e67ed9141cd8 100644 --- a/drivers/infiniband/sw/rxe/rxe_opcode.c +++ b/drivers/infiniband/sw/rxe/rxe_opcode.c @@ -137,7 +137,7 @@ struct rxe_opcode_info rxe_opcode[RXE_NUM_OPCODE] = { } }, [IB_OPCODE_RC_SEND_MIDDLE] = { - .name = "IB_OPCODE_RC_SEND_MIDDLE]", + .name = "IB_OPCODE_RC_SEND_MIDDLE", .mask = RXE_PAYLOAD_MASK | RXE_REQ_MASK | RXE_SEND_MASK | RXE_MIDDLE_MASK, .length = RXE_BTH_BYTES, diff --git a/drivers/md/persistent-data/dm-btree.c b/drivers/md/persistent-data/dm-btree.c index 386215245dfe..85273da5da20 100644 --- a/drivers/md/persistent-data/dm-btree.c +++ b/drivers/md/persistent-data/dm-btree.c @@ -83,14 +83,16 @@ void inc_children(struct dm_transaction_manager *tm, struct btree_node *n, }
static int insert_at(size_t value_size, struct btree_node *node, unsigned index, - uint64_t key, void *value) - __dm_written_to_disk(value) + uint64_t key, void *value) + __dm_written_to_disk(value) { uint32_t nr_entries = le32_to_cpu(node->header.nr_entries); + uint32_t max_entries = le32_to_cpu(node->header.max_entries); __le64 key_le = cpu_to_le64(key);
if (index > nr_entries || - index >= le32_to_cpu(node->header.max_entries)) { + index >= max_entries || + nr_entries >= max_entries) { DMERR("too many entries in btree node for insert"); __dm_unbless_for_disk(value); return -ENOMEM; diff --git a/drivers/md/persistent-data/dm-space-map-common.c b/drivers/md/persistent-data/dm-space-map-common.c index ca09ad2a639c..6fa4a68e78b0 100644 --- a/drivers/md/persistent-data/dm-space-map-common.c +++ b/drivers/md/persistent-data/dm-space-map-common.c @@ -279,6 +279,11 @@ int sm_ll_lookup_bitmap(struct ll_disk *ll, dm_block_t b, uint32_t *result) struct disk_index_entry ie_disk; struct dm_block *blk;
+ if (b >= ll->nr_blocks) { + DMERR_LIMIT("metadata block out of bounds"); + return -EINVAL; + } + b = do_div(index, ll->entries_per_block); r = ll->load_ie(ll, index, &ie_disk); if (r < 0) diff --git a/drivers/media/common/saa7146/saa7146_fops.c b/drivers/media/common/saa7146/saa7146_fops.c index 930d2c94d5d3..2c9365a39270 100644 --- a/drivers/media/common/saa7146/saa7146_fops.c +++ b/drivers/media/common/saa7146/saa7146_fops.c @@ -524,7 +524,7 @@ int saa7146_vv_init(struct saa7146_dev* dev, struct saa7146_ext_vv *ext_vv) ERR("out of memory. aborting.\n"); kfree(vv); v4l2_ctrl_handler_free(hdl); - return -1; + return -ENOMEM; }
saa7146_video_uops.init(dev,vv); diff --git a/drivers/media/dvb-core/dmxdev.c b/drivers/media/dvb-core/dmxdev.c index 0418b5a0fb64..32a2e6ffdb09 100644 --- a/drivers/media/dvb-core/dmxdev.c +++ b/drivers/media/dvb-core/dmxdev.c @@ -1225,7 +1225,7 @@ static const struct dvb_device dvbdev_dvr = { }; int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter) { - int i; + int i, ret;
if (dmxdev->demux->open(dmxdev->demux) < 0) return -EUSERS; @@ -1243,14 +1243,26 @@ int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter) DMXDEV_STATE_FREE); }
- dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev, + ret = dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev, DVB_DEVICE_DEMUX, dmxdev->filternum); - dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr, + if (ret < 0) + goto err_register_dvbdev; + + ret = dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr, dmxdev, DVB_DEVICE_DVR, dmxdev->filternum); + if (ret < 0) + goto err_register_dvr_dvbdev;
dvb_ringbuffer_init(&dmxdev->dvr_buffer, NULL, 8192);
return 0; + +err_register_dvr_dvbdev: + dvb_unregister_device(dmxdev->dvbdev); +err_register_dvbdev: + vfree(dmxdev->filter); + dmxdev->filter = NULL; + return ret; }
EXPORT_SYMBOL(dvb_dmxdev_init); diff --git a/drivers/media/dvb-frontends/dib8000.c b/drivers/media/dvb-frontends/dib8000.c index ddf9c44877a2..ea2eab2d5be9 100644 --- a/drivers/media/dvb-frontends/dib8000.c +++ b/drivers/media/dvb-frontends/dib8000.c @@ -4462,8 +4462,10 @@ static struct dvb_frontend *dib8000_init(struct i2c_adapter *i2c_adap, u8 i2c_ad
state->timf_default = cfg->pll->timf;
- if (dib8000_identify(&state->i2c) == 0) + if (dib8000_identify(&state->i2c) == 0) { + kfree(fe); goto error; + }
dibx000_init_i2c_master(&state->i2c_master, DIB8000, state->i2c.adap, state->i2c.addr);
diff --git a/drivers/media/pci/b2c2/flexcop-pci.c b/drivers/media/pci/b2c2/flexcop-pci.c index 4cac1fc233f2..98e94cd8bfad 100644 --- a/drivers/media/pci/b2c2/flexcop-pci.c +++ b/drivers/media/pci/b2c2/flexcop-pci.c @@ -184,6 +184,8 @@ static irqreturn_t flexcop_pci_isr(int irq, void *dev_id) dma_addr_t cur_addr = fc->read_ibi_reg(fc,dma1_008).dma_0x8.dma_cur_addr << 2; u32 cur_pos = cur_addr - fc_pci->dma[0].dma_addr0; + if (cur_pos > fc_pci->dma[0].size * 2) + goto error;
deb_irq("%u irq: %08x cur_addr: %llx: cur_pos: %08x, " "last_cur_pos: %08x ", @@ -225,6 +227,7 @@ static irqreturn_t flexcop_pci_isr(int irq, void *dev_id) ret = IRQ_NONE; }
+error: spin_unlock_irqrestore(&fc_pci->irq_lock, flags); return ret; } diff --git a/drivers/media/pci/saa7146/hexium_gemini.c b/drivers/media/pci/saa7146/hexium_gemini.c index be85a2c4318e..be91a2de81dc 100644 --- a/drivers/media/pci/saa7146/hexium_gemini.c +++ b/drivers/media/pci/saa7146/hexium_gemini.c @@ -296,7 +296,12 @@ static int hexium_attach(struct saa7146_dev *dev, struct saa7146_pci_extension_d hexium_set_input(hexium, 0); hexium->cur_input = 0;
- saa7146_vv_init(dev, &vv_data); + ret = saa7146_vv_init(dev, &vv_data); + if (ret) { + i2c_del_adapter(&hexium->i2c_adapter); + kfree(hexium); + return ret; + }
vv_data.vid_ops.vidioc_enum_input = vidioc_enum_input; vv_data.vid_ops.vidioc_g_input = vidioc_g_input; diff --git a/drivers/media/pci/saa7146/hexium_orion.c b/drivers/media/pci/saa7146/hexium_orion.c index dc07ca37ebd0..e8e96c7a5784 100644 --- a/drivers/media/pci/saa7146/hexium_orion.c +++ b/drivers/media/pci/saa7146/hexium_orion.c @@ -366,10 +366,16 @@ static struct saa7146_ext_vv vv_data; static int hexium_attach(struct saa7146_dev *dev, struct saa7146_pci_extension_data *info) { struct hexium *hexium = (struct hexium *) dev->ext_priv; + int ret;
DEB_EE("\n");
- saa7146_vv_init(dev, &vv_data); + ret = saa7146_vv_init(dev, &vv_data); + if (ret) { + pr_err("Error in saa7146_vv_init()\n"); + return ret; + } + vv_data.vid_ops.vidioc_enum_input = vidioc_enum_input; vv_data.vid_ops.vidioc_g_input = vidioc_g_input; vv_data.vid_ops.vidioc_s_input = vidioc_s_input; diff --git a/drivers/media/pci/saa7146/mxb.c b/drivers/media/pci/saa7146/mxb.c index 3e8753c9e1e4..849c2a1d09f9 100644 --- a/drivers/media/pci/saa7146/mxb.c +++ b/drivers/media/pci/saa7146/mxb.c @@ -694,10 +694,16 @@ static struct saa7146_ext_vv vv_data; static int mxb_attach(struct saa7146_dev *dev, struct saa7146_pci_extension_data *info) { struct mxb *mxb; + int ret;
DEB_EE("dev:%p\n", dev);
- saa7146_vv_init(dev, &vv_data); + ret = saa7146_vv_init(dev, &vv_data); + if (ret) { + ERR("Error in saa7146_vv_init()"); + return ret; + } + if (mxb_probe(dev)) { saa7146_vv_release(dev); return -1; diff --git a/drivers/media/rc/igorplugusb.c b/drivers/media/rc/igorplugusb.c index 5cf983be07a2..0f4c4c39bf6d 100644 --- a/drivers/media/rc/igorplugusb.c +++ b/drivers/media/rc/igorplugusb.c @@ -73,9 +73,11 @@ static void igorplugusb_irdata(struct igorplugusb *ir, unsigned len) if (start >= len) { dev_err(ir->dev, "receive overflow invalid: %u", overflow); } else { - if (overflow > 0) + if (overflow > 0) { dev_warn(ir->dev, "receive overflow, at least %u lost", overflow); + ir_raw_event_reset(ir->rc); + }
do { rawir.duration = ir->buf_in[i] * 85333; diff --git a/drivers/media/rc/mceusb.c b/drivers/media/rc/mceusb.c index b78d70685b1c..49122f442b87 100644 --- a/drivers/media/rc/mceusb.c +++ b/drivers/media/rc/mceusb.c @@ -1129,7 +1129,7 @@ static void mceusb_gen1_init(struct mceusb_dev *ir) */ ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0), USB_REQ_SET_ADDRESS, USB_TYPE_VENDOR, 0, 0, - data, USB_CTRL_MSG_SZ, HZ * 3); + data, USB_CTRL_MSG_SZ, 3000); dev_dbg(dev, "set address - ret = %d", ret); dev_dbg(dev, "set address - data[0] = %d, data[1] = %d", data[0], data[1]); @@ -1137,20 +1137,20 @@ static void mceusb_gen1_init(struct mceusb_dev *ir) /* set feature: bit rate 38400 bps */ ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0), USB_REQ_SET_FEATURE, USB_TYPE_VENDOR, - 0xc04e, 0x0000, NULL, 0, HZ * 3); + 0xc04e, 0x0000, NULL, 0, 3000);
dev_dbg(dev, "set feature - ret = %d", ret);
/* bRequest 4: set char length to 8 bits */ ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0), 4, USB_TYPE_VENDOR, - 0x0808, 0x0000, NULL, 0, HZ * 3); + 0x0808, 0x0000, NULL, 0, 3000); dev_dbg(dev, "set char length - retB = %d", ret);
/* bRequest 2: set handshaking to use DTR/DSR */ ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0), 2, USB_TYPE_VENDOR, - 0x0000, 0x0100, NULL, 0, HZ * 3); + 0x0000, 0x0100, NULL, 0, 3000); dev_dbg(dev, "set handshake - retC = %d", ret);
/* device resume */ diff --git a/drivers/media/rc/redrat3.c b/drivers/media/rc/redrat3.c index 05ba47bc0b61..5f3c1c204f64 100644 --- a/drivers/media/rc/redrat3.c +++ b/drivers/media/rc/redrat3.c @@ -427,7 +427,7 @@ static int redrat3_send_cmd(int cmd, struct redrat3_dev *rr3) udev = rr3->udev; res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), cmd, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, - 0x0000, 0x0000, data, sizeof(u8), HZ * 10); + 0x0000, 0x0000, data, sizeof(u8), 10000);
if (res < 0) { dev_err(rr3->dev, "%s: Error sending rr3 cmd res %d, data %d", @@ -493,7 +493,7 @@ static u32 redrat3_get_timeout(struct redrat3_dev *rr3) pipe = usb_rcvctrlpipe(rr3->udev, 0); ret = usb_control_msg(rr3->udev, pipe, RR3_GET_IR_PARAM, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, - RR3_IR_IO_SIG_TIMEOUT, 0, tmp, len, HZ * 5); + RR3_IR_IO_SIG_TIMEOUT, 0, tmp, len, 5000); if (ret != len) dev_warn(rr3->dev, "Failed to read timeout from hardware\n"); else { @@ -523,7 +523,7 @@ static int redrat3_set_timeout(struct rc_dev *rc_dev, unsigned int timeoutns) ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), RR3_SET_IR_PARAM, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, RR3_IR_IO_SIG_TIMEOUT, 0, timeout, sizeof(*timeout), - HZ * 25); + 25000); dev_dbg(dev, "set ir parm timeout %d ret 0x%02x\n", be32_to_cpu(*timeout), ret);
@@ -557,32 +557,32 @@ static void redrat3_reset(struct redrat3_dev *rr3) *val = 0x01; rc = usb_control_msg(udev, rxpipe, RR3_RESET, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, - RR3_CPUCS_REG_ADDR, 0, val, len, HZ * 25); + RR3_CPUCS_REG_ADDR, 0, val, len, 25000); dev_dbg(dev, "reset returned 0x%02x\n", rc);
*val = length_fuzz; rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, - RR3_IR_IO_LENGTH_FUZZ, 0, val, len, HZ * 25); + RR3_IR_IO_LENGTH_FUZZ, 0, val, len, 25000); dev_dbg(dev, "set ir parm len fuzz %d rc 0x%02x\n", *val, rc);
*val = (65536 - (minimum_pause * 2000)) / 256; rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, - RR3_IR_IO_MIN_PAUSE, 0, val, len, HZ * 25); + RR3_IR_IO_MIN_PAUSE, 0, val, len, 25000); dev_dbg(dev, "set ir parm min pause %d rc 0x%02x\n", *val, rc);
*val = periods_measure_carrier; rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, - RR3_IR_IO_PERIODS_MF, 0, val, len, HZ * 25); + RR3_IR_IO_PERIODS_MF, 0, val, len, 25000); dev_dbg(dev, "set ir parm periods measure carrier %d rc 0x%02x", *val, rc);
*val = RR3_DRIVER_MAXLENS; rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, - RR3_IR_IO_MAX_LENGTHS, 0, val, len, HZ * 25); + RR3_IR_IO_MAX_LENGTHS, 0, val, len, 25000); dev_dbg(dev, "set ir parm max lens %d rc 0x%02x\n", *val, rc);
kfree(val); @@ -602,7 +602,7 @@ static void redrat3_get_firmware_rev(struct redrat3_dev *rr3) rc = usb_control_msg(rr3->udev, usb_rcvctrlpipe(rr3->udev, 0), RR3_FW_VERSION, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, - 0, 0, buffer, RR3_FW_VERSION_LEN, HZ * 5); + 0, 0, buffer, RR3_FW_VERSION_LEN, 5000);
if (rc >= 0) dev_info(rr3->dev, "Firmware rev: %s", buffer); @@ -842,14 +842,14 @@ static int redrat3_transmit_ir(struct rc_dev *rcdev, unsigned *txbuf,
pipe = usb_sndbulkpipe(rr3->udev, rr3->ep_out->bEndpointAddress); ret = usb_bulk_msg(rr3->udev, pipe, irdata, - sendbuf_len, &ret_len, 10 * HZ); + sendbuf_len, &ret_len, 10000); dev_dbg(dev, "sent %d bytes, (ret %d)\n", ret_len, ret);
/* now tell the hardware to transmit what we sent it */ pipe = usb_rcvctrlpipe(rr3->udev, 0); ret = usb_control_msg(rr3->udev, pipe, RR3_TX_SEND_SIGNAL, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, - 0, 0, irdata, 2, HZ * 10); + 0, 0, irdata, 2, 10000);
if (ret < 0) dev_err(dev, "Error: control msg send failed, rc %d\n", ret); diff --git a/drivers/media/tuners/msi001.c b/drivers/media/tuners/msi001.c index 3a12ef35682b..64d98517f470 100644 --- a/drivers/media/tuners/msi001.c +++ b/drivers/media/tuners/msi001.c @@ -464,6 +464,13 @@ static int msi001_probe(struct spi_device *spi) V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 0, 1, 1, 1); dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, &msi001_ctrl_ops, V4L2_CID_RF_TUNER_BANDWIDTH, 200000, 8000000, 1, 200000); + if (dev->hdl.error) { + ret = dev->hdl.error; + dev_err(&spi->dev, "Could not initialize controls\n"); + /* control init failed, free handler */ + goto err_ctrl_handler_free; + } + v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false); dev->lna_gain = v4l2_ctrl_new_std(&dev->hdl, &msi001_ctrl_ops, V4L2_CID_RF_TUNER_LNA_GAIN, 0, 1, 1, 1); diff --git a/drivers/media/tuners/si2157.c b/drivers/media/tuners/si2157.c index 72a47da0db2a..e56837414e2c 100644 --- a/drivers/media/tuners/si2157.c +++ b/drivers/media/tuners/si2157.c @@ -89,7 +89,7 @@ static int si2157_init(struct dvb_frontend *fe) dev_dbg(&client->dev, "\n");
/* Try to get Xtal trim property, to verify tuner still running */ - memcpy(cmd.args, "\x15\x00\x04\x02", 4); + memcpy(cmd.args, "\x15\x00\x02\x04", 4); cmd.wlen = 4; cmd.rlen = 4; ret = si2157_cmd_execute(client, &cmd); diff --git a/drivers/media/usb/b2c2/flexcop-usb.c b/drivers/media/usb/b2c2/flexcop-usb.c index a93fc1839e13..3d6e991df926 100644 --- a/drivers/media/usb/b2c2/flexcop-usb.c +++ b/drivers/media/usb/b2c2/flexcop-usb.c @@ -87,7 +87,7 @@ static int flexcop_usb_readwrite_dw(struct flexcop_device *fc, u16 wRegOffsPCI, 0, fc_usb->data, sizeof(u32), - B2C2_WAIT_FOR_OPERATION_RDW * HZ); + B2C2_WAIT_FOR_OPERATION_RDW);
if (ret != sizeof(u32)) { err("error while %s dword from %d (%d).", read ? "reading" : @@ -155,7 +155,7 @@ static int flexcop_usb_v8_memory_req(struct flexcop_usb *fc_usb, wIndex, fc_usb->data, buflen, - nWaitTime * HZ); + nWaitTime); if (ret != buflen) ret = -EIO;
@@ -249,13 +249,13 @@ static int flexcop_usb_i2c_req(struct flexcop_i2c_adapter *i2c, /* DKT 020208 - add this to support special case of DiSEqC */ case USB_FUNC_I2C_CHECKWRITE: pipe = B2C2_USB_CTRL_PIPE_OUT; - nWaitTime = 2; + nWaitTime = 2000; request_type |= USB_DIR_OUT; break; case USB_FUNC_I2C_READ: case USB_FUNC_I2C_REPEATREAD: pipe = B2C2_USB_CTRL_PIPE_IN; - nWaitTime = 2; + nWaitTime = 2000; request_type |= USB_DIR_IN; break; default: @@ -282,7 +282,7 @@ static int flexcop_usb_i2c_req(struct flexcop_i2c_adapter *i2c, wIndex, fc_usb->data, buflen, - nWaitTime * HZ); + nWaitTime);
if (ret != buflen) ret = -EIO; diff --git a/drivers/media/usb/b2c2/flexcop-usb.h b/drivers/media/usb/b2c2/flexcop-usb.h index 25ad43166e78..247c7dbc8a61 100644 --- a/drivers/media/usb/b2c2/flexcop-usb.h +++ b/drivers/media/usb/b2c2/flexcop-usb.h @@ -90,13 +90,13 @@ typedef enum { UTILITY_SRAM_TESTVERIFY = 0x16, } flexcop_usb_utility_function_t;
-#define B2C2_WAIT_FOR_OPERATION_RW (1*HZ) -#define B2C2_WAIT_FOR_OPERATION_RDW (3*HZ) -#define B2C2_WAIT_FOR_OPERATION_WDW (1*HZ) +#define B2C2_WAIT_FOR_OPERATION_RW 1000 +#define B2C2_WAIT_FOR_OPERATION_RDW 3000 +#define B2C2_WAIT_FOR_OPERATION_WDW 1000
-#define B2C2_WAIT_FOR_OPERATION_V8READ (3*HZ) -#define B2C2_WAIT_FOR_OPERATION_V8WRITE (3*HZ) -#define B2C2_WAIT_FOR_OPERATION_V8FLASH (3*HZ) +#define B2C2_WAIT_FOR_OPERATION_V8READ 3000 +#define B2C2_WAIT_FOR_OPERATION_V8WRITE 3000 +#define B2C2_WAIT_FOR_OPERATION_V8FLASH 3000
typedef enum { V8_MEMORY_PAGE_DVB_CI = 0x20, diff --git a/drivers/media/usb/cpia2/cpia2_usb.c b/drivers/media/usb/cpia2/cpia2_usb.c index 4f4a130f17af..447d6a52af3b 100644 --- a/drivers/media/usb/cpia2/cpia2_usb.c +++ b/drivers/media/usb/cpia2/cpia2_usb.c @@ -565,7 +565,7 @@ static int write_packet(struct usb_device *udev, 0, /* index */ buf, /* buffer */ size, - HZ); + 1000);
kfree(buf); return ret; @@ -597,7 +597,7 @@ static int read_packet(struct usb_device *udev, 0, /* index */ buf, /* buffer */ size, - HZ); + 1000);
if (ret >= 0) memcpy(registers, buf, size); diff --git a/drivers/media/usb/dvb-usb/dib0700_core.c b/drivers/media/usb/dvb-usb/dib0700_core.c index 4a5ea74c91d4..1b56824fbe51 100644 --- a/drivers/media/usb/dvb-usb/dib0700_core.c +++ b/drivers/media/usb/dvb-usb/dib0700_core.c @@ -610,8 +610,6 @@ int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff) deb_info("the endpoint number (%i) is not correct, use the adapter id instead", adap->fe_adap[0].stream.props.endpoint); if (onoff) st->channel_state |= 1 << (adap->id); - else - st->channel_state |= 1 << ~(adap->id); } else { if (onoff) st->channel_state |= 1 << (adap->fe_adap[0].stream.props.endpoint-2); diff --git a/drivers/media/usb/dvb-usb/m920x.c b/drivers/media/usb/dvb-usb/m920x.c index eafc5c82467f..5b806779e210 100644 --- a/drivers/media/usb/dvb-usb/m920x.c +++ b/drivers/media/usb/dvb-usb/m920x.c @@ -284,6 +284,13 @@ static int m920x_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[], int nu /* Should check for ack here, if we knew how. */ } if (msg[i].flags & I2C_M_RD) { + char *read = kmalloc(1, GFP_KERNEL); + if (!read) { + ret = -ENOMEM; + kfree(read); + goto unlock; + } + for (j = 0; j < msg[i].len; j++) { /* Last byte of transaction? * Send STOP, otherwise send ACK. */ @@ -291,9 +298,12 @@ static int m920x_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[], int nu
if ((ret = m920x_read(d->udev, M9206_I2C, 0x0, 0x20 | stop, - &msg[i].buf[j], 1)) != 0) + read, 1)) != 0) goto unlock; + msg[i].buf[j] = read[0]; } + + kfree(read); } else { for (j = 0; j < msg[i].len; j++) { /* Last byte of transaction? Then send STOP. */ diff --git a/drivers/media/usb/em28xx/em28xx-core.c b/drivers/media/usb/em28xx/em28xx-core.c index eebd5d7088d0..fb3008a7233f 100644 --- a/drivers/media/usb/em28xx/em28xx-core.c +++ b/drivers/media/usb/em28xx/em28xx-core.c @@ -99,7 +99,7 @@ int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg, mutex_lock(&dev->ctrl_urb_lock); ret = usb_control_msg(dev->udev, pipe, req, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, - 0x0000, reg, dev->urb_buf, len, HZ); + 0x0000, reg, dev->urb_buf, len, 1000); if (ret < 0) { if (reg_debug) printk(" failed!\n"); @@ -182,7 +182,7 @@ int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf, memcpy(dev->urb_buf, buf, len); ret = usb_control_msg(dev->udev, pipe, req, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, - 0x0000, reg, dev->urb_buf, len, HZ); + 0x0000, reg, dev->urb_buf, len, 1000); mutex_unlock(&dev->ctrl_urb_lock);
if (ret < 0) diff --git a/drivers/media/usb/pvrusb2/pvrusb2-hdw.c b/drivers/media/usb/pvrusb2/pvrusb2-hdw.c index 0cb8dd585235..40535db585a0 100644 --- a/drivers/media/usb/pvrusb2/pvrusb2-hdw.c +++ b/drivers/media/usb/pvrusb2/pvrusb2-hdw.c @@ -1488,7 +1488,7 @@ static int pvr2_upload_firmware1(struct pvr2_hdw *hdw) for (address = 0; address < fwsize; address += 0x800) { memcpy(fw_ptr, fw_entry->data + address, 0x800); ret += usb_control_msg(hdw->usb_dev, pipe, 0xa0, 0x40, address, - 0, fw_ptr, 0x800, HZ); + 0, fw_ptr, 0x800, 1000); }
trace_firmware("Upload done, releasing device's CPU"); @@ -1627,7 +1627,7 @@ int pvr2_upload_firmware2(struct pvr2_hdw *hdw) ((u32 *)fw_ptr)[icnt] = swab32(((u32 *)fw_ptr)[icnt]);
ret |= usb_bulk_msg(hdw->usb_dev, pipe, fw_ptr,bcnt, - &actual_length, HZ); + &actual_length, 1000); ret |= (actual_length != bcnt); if (ret) break; fw_done += bcnt; @@ -3486,7 +3486,7 @@ void pvr2_hdw_cpufw_set_enabled(struct pvr2_hdw *hdw, 0xa0,0xc0, address,0, hdw->fw_buffer+address, - 0x800,HZ); + 0x800,1000); if (ret < 0) break; }
@@ -4011,7 +4011,7 @@ void pvr2_hdw_cpureset_assert(struct pvr2_hdw *hdw,int val) /* Write the CPUCS register on the 8051. The lsb of the register is the reset bit; a 1 asserts reset while a 0 clears it. */ pipe = usb_sndctrlpipe(hdw->usb_dev, 0); - ret = usb_control_msg(hdw->usb_dev,pipe,0xa0,0x40,0xe600,0,da,1,HZ); + ret = usb_control_msg(hdw->usb_dev,pipe,0xa0,0x40,0xe600,0,da,1,1000); if (ret < 0) { pvr2_trace(PVR2_TRACE_ERROR_LEGS, "cpureset_assert(%d) error=%d",val,ret); diff --git a/drivers/media/usb/s2255/s2255drv.c b/drivers/media/usb/s2255/s2255drv.c index f7bb78c1873c..fb5636f07e7e 100644 --- a/drivers/media/usb/s2255/s2255drv.c +++ b/drivers/media/usb/s2255/s2255drv.c @@ -1913,7 +1913,7 @@ static long s2255_vendor_req(struct s2255_dev *dev, unsigned char Request, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, Value, Index, buf, - TransferBufferLength, HZ * 5); + TransferBufferLength, USB_CTRL_SET_TIMEOUT);
if (r >= 0) memcpy(TransferBuffer, buf, TransferBufferLength); @@ -1922,7 +1922,7 @@ static long s2255_vendor_req(struct s2255_dev *dev, unsigned char Request, r = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), Request, USB_TYPE_VENDOR | USB_RECIP_DEVICE, Value, Index, buf, - TransferBufferLength, HZ * 5); + TransferBufferLength, USB_CTRL_SET_TIMEOUT); } kfree(buf); return r; diff --git a/drivers/media/usb/stk1160/stk1160-core.c b/drivers/media/usb/stk1160/stk1160-core.c index bc029478065a..a526ea2fe587 100644 --- a/drivers/media/usb/stk1160/stk1160-core.c +++ b/drivers/media/usb/stk1160/stk1160-core.c @@ -76,7 +76,7 @@ int stk1160_read_reg(struct stk1160 *dev, u16 reg, u8 *value) return -ENOMEM; ret = usb_control_msg(dev->udev, pipe, 0x00, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, - 0x00, reg, buf, sizeof(u8), HZ); + 0x00, reg, buf, sizeof(u8), 1000); if (ret < 0) { stk1160_err("read failed on reg 0x%x (%d)\n", reg, ret); @@ -96,7 +96,7 @@ int stk1160_write_reg(struct stk1160 *dev, u16 reg, u16 value)
ret = usb_control_msg(dev->udev, pipe, 0x01, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, - value, reg, NULL, 0, HZ); + value, reg, NULL, 0, 1000); if (ret < 0) { stk1160_err("write failed on reg 0x%x (%d)\n", reg, ret); diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c index 1d724e86f378..2a7d178a9d06 100644 --- a/drivers/media/usb/uvc/uvc_video.c +++ b/drivers/media/usb/uvc/uvc_video.c @@ -1716,6 +1716,10 @@ static int uvc_init_video(struct uvc_streaming *stream, gfp_t gfp_flags) if (ep == NULL) return -EIO;
+ /* Reject broken descriptors. */ + if (usb_endpoint_maxp(&ep->desc) == 0) + return -EIO; + ret = uvc_init_video_bulk(stream, ep, gfp_flags); }
diff --git a/drivers/mfd/intel-lpss-acpi.c b/drivers/mfd/intel-lpss-acpi.c index 6bf8d643d942..31fbfd9c4b11 100644 --- a/drivers/mfd/intel-lpss-acpi.c +++ b/drivers/mfd/intel-lpss-acpi.c @@ -84,6 +84,7 @@ static int intel_lpss_acpi_probe(struct platform_device *pdev) { struct intel_lpss_platform_info *info; const struct acpi_device_id *id; + int ret;
id = acpi_match_device(intel_lpss_acpi_ids, &pdev->dev); if (!id) @@ -97,10 +98,14 @@ static int intel_lpss_acpi_probe(struct platform_device *pdev) info->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); info->irq = platform_get_irq(pdev, 0);
+ ret = intel_lpss_probe(&pdev->dev, info); + if (ret) + return ret; + pm_runtime_set_active(&pdev->dev); pm_runtime_enable(&pdev->dev);
- return intel_lpss_probe(&pdev->dev, info); + return 0; }
static int intel_lpss_acpi_remove(struct platform_device *pdev) diff --git a/drivers/misc/lattice-ecp3-config.c b/drivers/misc/lattice-ecp3-config.c index 626fdcaf2510..645d26536114 100644 --- a/drivers/misc/lattice-ecp3-config.c +++ b/drivers/misc/lattice-ecp3-config.c @@ -81,12 +81,12 @@ static void firmware_load(const struct firmware *fw, void *context)
if (fw == NULL) { dev_err(&spi->dev, "Cannot load firmware, aborting\n"); - return; + goto out; }
if (fw->size == 0) { dev_err(&spi->dev, "Error: Firmware size is 0!\n"); - return; + goto out; }
/* Fill dummy data (24 stuffing bits for commands) */ @@ -108,7 +108,7 @@ static void firmware_load(const struct firmware *fw, void *context) dev_err(&spi->dev, "Error: No supported FPGA detected (JEDEC_ID=%08x)!\n", jedec_id); - return; + goto out; }
dev_info(&spi->dev, "FPGA %s detected\n", ecp3_dev[i].name); @@ -121,7 +121,7 @@ static void firmware_load(const struct firmware *fw, void *context) buffer = kzalloc(fw->size + 8, GFP_KERNEL); if (!buffer) { dev_err(&spi->dev, "Error: Can't allocate memory!\n"); - return; + goto out; }
/* @@ -160,7 +160,7 @@ static void firmware_load(const struct firmware *fw, void *context) "Error: Timeout waiting for FPGA to clear (status=%08x)!\n", status); kfree(buffer); - return; + goto out; }
dev_info(&spi->dev, "Configuring the FPGA...\n"); @@ -186,7 +186,7 @@ static void firmware_load(const struct firmware *fw, void *context) release_firmware(fw);
kfree(buffer); - +out: complete(&data->fw_loaded); }
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 2b721ed392ad..0d9226bdf661 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -782,14 +782,14 @@ static bool bond_should_notify_peers(struct bonding *bond) slave = rcu_dereference(bond->curr_active_slave); rcu_read_unlock();
- netdev_dbg(bond->dev, "bond_should_notify_peers: slave %s\n", - slave ? slave->dev->name : "NULL"); - if (!slave || !bond->send_peer_notif || !netif_carrier_ok(bond->dev) || test_bit(__LINK_STATE_LINKWATCH_PENDING, &slave->dev->state)) return false;
+ netdev_dbg(bond->dev, "bond_should_notify_peers: slave %s\n", + slave ? slave->dev->name : "NULL"); + return true; }
diff --git a/drivers/net/can/softing/softing_cs.c b/drivers/net/can/softing/softing_cs.c index cdc0c7433a4b..9fbed88d6c82 100644 --- a/drivers/net/can/softing/softing_cs.c +++ b/drivers/net/can/softing/softing_cs.c @@ -304,7 +304,7 @@ static int softingcs_probe(struct pcmcia_device *pcmcia) return 0;
platform_failed: - kfree(dev); + platform_device_put(pdev); mem_failed: pcmcia_bad: pcmcia_failed: diff --git a/drivers/net/can/softing/softing_fw.c b/drivers/net/can/softing/softing_fw.c index 52fe50725d74..a74c779feb90 100644 --- a/drivers/net/can/softing/softing_fw.c +++ b/drivers/net/can/softing/softing_fw.c @@ -576,18 +576,19 @@ int softing_startstop(struct net_device *dev, int up) if (ret < 0) goto failed; } - /* enable_error_frame */ - /* + + /* enable_error_frame + * * Error reporting is switched off at the moment since * the receiving of them is not yet 100% verified * This should be enabled sooner or later - * - if (error_reporting) { + */ + if (0 && error_reporting) { ret = softing_fct_cmd(card, 51, "enable_error_frame"); if (ret < 0) goto failed; } - */ + /* initialize interface */ iowrite16(1, &card->dpram[DPRAM_FCT_PARAM + 2]); iowrite16(1, &card->dpram[DPRAM_FCT_PARAM + 4]); diff --git a/drivers/net/can/usb/gs_usb.c b/drivers/net/can/usb/gs_usb.c index d21c68882e86..75399aa1ba95 100644 --- a/drivers/net/can/usb/gs_usb.c +++ b/drivers/net/can/usb/gs_usb.c @@ -328,7 +328,7 @@ static void gs_usb_receive_bulk_callback(struct urb *urb)
/* device reports out of range channel id */ if (hf->channel >= GS_MAX_INTF) - goto resubmit_urb; + goto device_detach;
dev = usbcan->canch[hf->channel];
@@ -413,6 +413,7 @@ static void gs_usb_receive_bulk_callback(struct urb *urb)
/* USB failure take down all interfaces */ if (rc == -ENODEV) { + device_detach: for (rc = 0; rc < GS_MAX_INTF; rc++) { if (usbcan->canch[rc]) netif_device_detach(usbcan->canch[rc]->netdev); @@ -514,6 +515,8 @@ static netdev_tx_t gs_can_start_xmit(struct sk_buff *skb,
hf->echo_id = idx; hf->channel = dev->channel; + hf->flags = 0; + hf->reserved = 0;
cf = (struct can_frame *)skb->data;
diff --git a/drivers/net/can/xilinx_can.c b/drivers/net/can/xilinx_can.c index e680bab27dd7..ef24b619e0e5 100644 --- a/drivers/net/can/xilinx_can.c +++ b/drivers/net/can/xilinx_can.c @@ -1302,7 +1302,12 @@ static int xcan_probe(struct platform_device *pdev) spin_lock_init(&priv->tx_lock);
/* Get IRQ for the device */ - ndev->irq = platform_get_irq(pdev, 0); + ret = platform_get_irq(pdev, 0); + if (ret < 0) + goto err_free; + + ndev->irq = ret; + ndev->flags |= IFF_ECHO; /* We support local echo */
platform_set_drvdata(pdev, ndev); diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c index fae551777083..6676924d5f3e 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c @@ -3358,10 +3358,12 @@ static int bcmgenet_probe(struct platform_device *pdev)
/* Request the WOL interrupt and advertise suspend if available */ priv->wol_irq_disabled = true; - err = devm_request_irq(&pdev->dev, priv->wol_irq, bcmgenet_wol_isr, 0, - dev->name, priv); - if (!err) - device_set_wakeup_capable(&pdev->dev, 1); + if (priv->wol_irq > 0) { + err = devm_request_irq(&pdev->dev, priv->wol_irq, + bcmgenet_wol_isr, 0, dev->name, priv); + if (!err) + device_set_wakeup_capable(&pdev->dev, 1); + }
/* Set the needed headroom to account for any possible * features enabling/disabling at runtime diff --git a/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.c b/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.c index d04a6c163445..da8d10475a08 100644 --- a/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.c +++ b/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.c @@ -32,6 +32,7 @@
#include <linux/tcp.h> #include <linux/ipv6.h> +#include <net/inet_ecn.h> #include <net/route.h> #include <net/ip6_route.h>
@@ -99,7 +100,7 @@ cxgb_find_route(struct cxgb4_lld_info *lldi,
rt = ip_route_output_ports(&init_net, &fl4, NULL, peer_ip, local_ip, peer_port, local_port, IPPROTO_TCP, - tos, 0); + tos & ~INET_ECN_MASK, 0); if (IS_ERR(rt)) return NULL; n = dst_neigh_lookup(&rt->dst, &peer_ip); diff --git a/drivers/net/ethernet/freescale/fman/mac.c b/drivers/net/ethernet/freescale/fman/mac.c index 81021f87e4f3..93b7ed361b82 100644 --- a/drivers/net/ethernet/freescale/fman/mac.c +++ b/drivers/net/ethernet/freescale/fman/mac.c @@ -96,14 +96,17 @@ static void mac_exception(void *handle, enum fman_mac_exceptions ex) __func__, ex); }
-static void set_fman_mac_params(struct mac_device *mac_dev, - struct fman_mac_params *params) +static int set_fman_mac_params(struct mac_device *mac_dev, + struct fman_mac_params *params) { struct mac_priv_s *priv = mac_dev->priv;
params->base_addr = (typeof(params->base_addr)) devm_ioremap(priv->dev, mac_dev->res->start, resource_size(mac_dev->res)); + if (!params->base_addr) + return -ENOMEM; + memcpy(¶ms->addr, mac_dev->addr, sizeof(mac_dev->addr)); params->max_speed = priv->max_speed; params->phy_if = priv->phy_if; @@ -114,6 +117,8 @@ static void set_fman_mac_params(struct mac_device *mac_dev, params->event_cb = mac_exception; params->dev_id = mac_dev; params->internal_phy_node = priv->internal_phy_node; + + return 0; }
static int tgec_initialization(struct mac_device *mac_dev) @@ -125,7 +130,9 @@ static int tgec_initialization(struct mac_device *mac_dev)
priv = mac_dev->priv;
- set_fman_mac_params(mac_dev, ¶ms); + err = set_fman_mac_params(mac_dev, ¶ms); + if (err) + goto _return;
mac_dev->fman_mac = tgec_config(¶ms); if (!mac_dev->fman_mac) { @@ -171,7 +178,9 @@ static int dtsec_initialization(struct mac_device *mac_dev)
priv = mac_dev->priv;
- set_fman_mac_params(mac_dev, ¶ms); + err = set_fman_mac_params(mac_dev, ¶ms); + if (err) + goto _return;
mac_dev->fman_mac = dtsec_config(¶ms); if (!mac_dev->fman_mac) { @@ -220,7 +229,9 @@ static int memac_initialization(struct mac_device *mac_dev)
priv = mac_dev->priv;
- set_fman_mac_params(mac_dev, ¶ms); + err = set_fman_mac_params(mac_dev, ¶ms); + if (err) + goto _return;
if (priv->max_speed == SPEED_10000) params.phy_if = PHY_INTERFACE_MODE_XGMII; diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c index 9fd68cfdd973..fc721a59a408 100644 --- a/drivers/net/ethernet/freescale/gianfar.c +++ b/drivers/net/ethernet/freescale/gianfar.c @@ -2939,29 +2939,21 @@ static bool gfar_add_rx_frag(struct gfar_rx_buff *rxb, u32 lstatus, { int size = lstatus & BD_LENGTH_MASK; struct page *page = rxb->page; - bool last = !!(lstatus & BD_LFLAG(RXBD_LAST)); - - /* Remove the FCS from the packet length */ - if (last) - size -= ETH_FCS_LEN;
if (likely(first)) { skb_put(skb, size); } else { /* the last fragments' length contains the full frame length */ - if (last) + if (lstatus & BD_LFLAG(RXBD_LAST)) size -= skb->len;
- /* Add the last fragment if it contains something other than - * the FCS, otherwise drop it and trim off any part of the FCS - * that was already received. - */ - if (size > 0) - skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, page, - rxb->page_offset + RXBUF_ALIGNMENT, - size, GFAR_RXB_TRUESIZE); - else if (size < 0) - pskb_trim(skb, skb->len + size); + WARN(size < 0, "gianfar: rx fragment size underflow"); + if (size < 0) + return false; + + skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, page, + rxb->page_offset + RXBUF_ALIGNMENT, + size, GFAR_RXB_TRUESIZE); }
/* try reuse page */ @@ -3074,6 +3066,9 @@ static void gfar_process_frame(struct net_device *ndev, struct sk_buff *skb) if (priv->padding) skb_pull(skb, priv->padding);
+ /* Trim off the FCS */ + pskb_trim(skb, skb->len - ETH_FCS_LEN); + if (ndev->features & NETIF_F_RXCSUM) gfar_rx_checksum(skb, fcb);
@@ -3117,6 +3112,17 @@ int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue, int rx_work_limit) if (lstatus & BD_LFLAG(RXBD_EMPTY)) break;
+ /* lost RXBD_LAST descriptor due to overrun */ + if (skb && + (lstatus & BD_LFLAG(RXBD_FIRST))) { + /* discard faulty buffer */ + dev_kfree_skb(skb); + skb = NULL; + rx_queue->stats.rx_dropped++; + + /* can continue normally */ + } + /* order rx buffer descriptor reads */ rmb();
diff --git a/drivers/net/ethernet/freescale/xgmac_mdio.c b/drivers/net/ethernet/freescale/xgmac_mdio.c index c82c85ef5fb3..c37aea7ba850 100644 --- a/drivers/net/ethernet/freescale/xgmac_mdio.c +++ b/drivers/net/ethernet/freescale/xgmac_mdio.c @@ -301,9 +301,10 @@ static int xgmac_mdio_probe(struct platform_device *pdev) static int xgmac_mdio_remove(struct platform_device *pdev) { struct mii_bus *bus = platform_get_drvdata(pdev); + struct mdio_fsl_priv *priv = bus->priv;
mdiobus_unregister(bus); - iounmap(bus->priv); + iounmap(priv->mdio_base); mdiobus_free(bus);
return 0; diff --git a/drivers/net/ethernet/i825xx/sni_82596.c b/drivers/net/ethernet/i825xx/sni_82596.c index 2af7f77345fb..e4128e151b85 100644 --- a/drivers/net/ethernet/i825xx/sni_82596.c +++ b/drivers/net/ethernet/i825xx/sni_82596.c @@ -122,9 +122,10 @@ static int sni_82596_probe(struct platform_device *dev) netdevice->dev_addr[5] = readb(eth_addr + 0x06); iounmap(eth_addr);
- if (!netdevice->irq) { + if (netdevice->irq < 0) { printk(KERN_ERR "%s: IRQ not found for i82596 at 0x%lx\n", __FILE__, netdevice->base_addr); + retval = netdevice->irq; goto probe_failed; }
diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c index 46fcf3ec2caf..46998a58e3d9 100644 --- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c +++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c @@ -278,6 +278,16 @@ static int axienet_dma_bd_init(struct net_device *ndev) axienet_dma_out32(lp, XAXIDMA_TX_CR_OFFSET, cr | XAXIDMA_CR_RUNSTOP_MASK);
+ /* Wait for PhyRstCmplt bit to be set, indicating the PHY reset has finished */ + ret = read_poll_timeout(axienet_ior, value, + value & XAE_INT_PHYRSTCMPLT_MASK, + DELAY_OF_ONE_MILLISEC, 50000, false, lp, + XAE_IS_OFFSET); + if (ret) { + dev_err(lp->dev, "%s: timeout waiting for PhyRstCmplt\n", __func__); + return ret; + } + return 0; out: axienet_dma_bd_release(ndev); @@ -670,7 +680,7 @@ axienet_start_xmit(struct sk_buff *skb, struct net_device *ndev) num_frag = skb_shinfo(skb)->nr_frags; cur_p = &lp->tx_bd_v[lp->tx_bd_tail];
- if (axienet_check_tx_bd_space(lp, num_frag)) { + if (axienet_check_tx_bd_space(lp, num_frag + 1)) { if (netif_queue_stopped(ndev)) return NETDEV_TX_BUSY;
@@ -680,7 +690,7 @@ axienet_start_xmit(struct sk_buff *skb, struct net_device *ndev) smp_mb();
/* Space might have just been freed - check again */ - if (axienet_check_tx_bd_space(lp, num_frag)) + if (axienet_check_tx_bd_space(lp, num_frag + 1)) return NETDEV_TX_BUSY;
netif_wake_queue(ndev); diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c index 92fb664b56fb..0fa6e2da4b5a 100644 --- a/drivers/net/phy/mdio_bus.c +++ b/drivers/net/phy/mdio_bus.c @@ -347,7 +347,7 @@ int __mdiobus_register(struct mii_bus *bus, struct module *owner) }
bus->state = MDIOBUS_REGISTERED; - pr_info("%s: probed\n", bus->name); + dev_dbg(&bus->dev, "probed\n"); return 0;
error: diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c index 0a29844676f9..6287d2ad77c6 100644 --- a/drivers/net/ppp/ppp_generic.c +++ b/drivers/net/ppp/ppp_generic.c @@ -71,6 +71,8 @@ #define MPHDRLEN 6 /* multilink protocol header length */ #define MPHDRLEN_SSN 4 /* ditto with short sequence numbers */
+#define PPP_PROTO_LEN 2 + /* * An instance of /dev/ppp can be associated with either a ppp * interface unit or a ppp channel. In both cases, file->private_data @@ -500,6 +502,9 @@ static ssize_t ppp_write(struct file *file, const char __user *buf,
if (!pf) return -ENXIO; + /* All PPP packets should start with the 2-byte protocol */ + if (count < PPP_PROTO_LEN) + return -EINVAL; ret = -ENOMEM; skb = alloc_skb(count + pf->hdrlen, GFP_KERNEL); if (!skb) @@ -1563,7 +1568,7 @@ ppp_send_frame(struct ppp *ppp, struct sk_buff *skb) }
++ppp->stats64.tx_packets; - ppp->stats64.tx_bytes += skb->len - 2; + ppp->stats64.tx_bytes += skb->len - PPP_PROTO_LEN;
switch (proto) { case PPP_IP: diff --git a/drivers/net/usb/mcs7830.c b/drivers/net/usb/mcs7830.c index 4f345bd4e6e2..95151b46f200 100644 --- a/drivers/net/usb/mcs7830.c +++ b/drivers/net/usb/mcs7830.c @@ -121,8 +121,16 @@ static const char driver_name[] = "MOSCHIP usb-ethernet driver";
static int mcs7830_get_reg(struct usbnet *dev, u16 index, u16 size, void *data) { - return usbnet_read_cmd(dev, MCS7830_RD_BREQ, MCS7830_RD_BMREQ, - 0x0000, index, data, size); + int ret; + + ret = usbnet_read_cmd(dev, MCS7830_RD_BREQ, MCS7830_RD_BMREQ, + 0x0000, index, data, size); + if (ret < 0) + return ret; + else if (ret < size) + return -ENODATA; + + return ret; }
static int mcs7830_set_reg(struct usbnet *dev, u16 index, u16 size, const void *data) diff --git a/drivers/net/wireless/ath/ar5523/ar5523.c b/drivers/net/wireless/ath/ar5523/ar5523.c index 9f4ee1d125b6..0c6b33c464cd 100644 --- a/drivers/net/wireless/ath/ar5523/ar5523.c +++ b/drivers/net/wireless/ath/ar5523/ar5523.c @@ -153,6 +153,10 @@ static void ar5523_cmd_rx_cb(struct urb *urb) ar5523_err(ar, "Invalid reply to WDCMSG_TARGET_START"); return; } + if (!cmd->odata) { + ar5523_err(ar, "Unexpected WDCMSG_TARGET_START reply"); + return; + } memcpy(cmd->odata, hdr + 1, sizeof(u32)); cmd->olen = sizeof(u32); cmd->res = 0; diff --git a/drivers/net/wireless/ath/ath10k/htt_tx.c b/drivers/net/wireless/ath/ath10k/htt_tx.c index ae5b33fe5ba8..374ce35940d0 100644 --- a/drivers/net/wireless/ath/ath10k/htt_tx.c +++ b/drivers/net/wireless/ath/ath10k/htt_tx.c @@ -158,6 +158,9 @@ void ath10k_htt_tx_dec_pending(struct ath10k_htt *htt) htt->num_pending_tx--; if (htt->num_pending_tx == htt->max_num_pending_tx - 1) ath10k_mac_tx_unlock(htt->ar, ATH10K_TX_PAUSE_Q_FULL); + + if (htt->num_pending_tx == 0) + wake_up(&htt->empty_tx_wq); }
int ath10k_htt_tx_inc_pending(struct ath10k_htt *htt) diff --git a/drivers/net/wireless/ath/ath10k/txrx.c b/drivers/net/wireless/ath/ath10k/txrx.c index beeb6be06939..b6c050452b75 100644 --- a/drivers/net/wireless/ath/ath10k/txrx.c +++ b/drivers/net/wireless/ath/ath10k/txrx.c @@ -89,8 +89,6 @@ int ath10k_txrx_tx_unref(struct ath10k_htt *htt,
ath10k_htt_tx_free_msdu_id(htt, tx_done->msdu_id); ath10k_htt_tx_dec_pending(htt); - if (htt->num_pending_tx == 0) - wake_up(&htt->empty_tx_wq); spin_unlock_bh(&htt->tx_lock);
dma_unmap_single(dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE); diff --git a/drivers/net/wireless/ath/ath9k/hif_usb.c b/drivers/net/wireless/ath/ath9k/hif_usb.c index 7c409cd43b70..33a6be0f21ca 100644 --- a/drivers/net/wireless/ath/ath9k/hif_usb.c +++ b/drivers/net/wireless/ath/ath9k/hif_usb.c @@ -588,6 +588,13 @@ static void ath9k_hif_usb_rx_stream(struct hif_device_usb *hif_dev, return; }
+ if (pkt_len > 2 * MAX_RX_BUF_SIZE) { + dev_err(&hif_dev->udev->dev, + "ath9k_htc: invalid pkt_len (%x)\n", pkt_len); + RX_STAT_INC(skb_dropped); + return; + } + pad_len = 4 - (pkt_len & 0x3); if (pad_len == 4) pad_len = 0; diff --git a/drivers/net/wireless/ath/wcn36xx/smd.c b/drivers/net/wireless/ath/wcn36xx/smd.c index 914c210c9e60..da2f442cab27 100644 --- a/drivers/net/wireless/ath/wcn36xx/smd.c +++ b/drivers/net/wireless/ath/wcn36xx/smd.c @@ -2052,7 +2052,7 @@ static int wcn36xx_smd_missed_beacon_ind(struct wcn36xx *wcn, wcn36xx_dbg(WCN36XX_DBG_HAL, "beacon missed bss_index %d\n", tmp->bss_index); vif = wcn36xx_priv_to_vif(tmp); - ieee80211_connection_loss(vif); + ieee80211_beacon_loss(vif); } return 0; } @@ -2067,7 +2067,7 @@ static int wcn36xx_smd_missed_beacon_ind(struct wcn36xx *wcn, wcn36xx_dbg(WCN36XX_DBG_HAL, "beacon missed bss_index %d\n", rsp->bss_index); vif = wcn36xx_priv_to_vif(tmp); - ieee80211_connection_loss(vif); + ieee80211_beacon_loss(vif); return 0; } } diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c index d46efa8d7073..f8c225a726bd 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c @@ -1599,6 +1599,7 @@ static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm) struct iwl_mvm_mc_iter_data iter_data = { .mvm = mvm, }; + int ret;
lockdep_assert_held(&mvm->mutex);
@@ -1608,6 +1609,22 @@ static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm) ieee80211_iterate_active_interfaces_atomic( mvm->hw, IEEE80211_IFACE_ITER_NORMAL, iwl_mvm_mc_iface_iterator, &iter_data); + + /* + * Send a (synchronous) ech command so that we wait for the + * multiple asynchronous MCAST_FILTER_CMD commands sent by + * the interface iterator. Otherwise, we might get here over + * and over again (by userspace just sending a lot of these) + * and the CPU can send them faster than the firmware can + * process them. + * Note that the CPU is still faster - but with this we'll + * actually send fewer commands overall because the CPU will + * not schedule the work in mac80211 as frequently if it's + * still running when rescheduled (possibly multiple times). + */ + ret = iwl_mvm_send_cmd_pdu(mvm, ECHO_CMD, 0, 0, NULL); + if (ret) + IWL_ERR(mvm, "Failed to synchronize multicast groups update\n"); }
static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw, diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c index fa9743205491..a8470817689c 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c @@ -1260,7 +1260,7 @@ static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type) return -EIO; }
-#define SCAN_TIMEOUT 20000 +#define SCAN_TIMEOUT 30000
void iwl_mvm_scan_timeout_wk(struct work_struct *work) { diff --git a/drivers/net/wireless/marvell/mwifiex/usb.c b/drivers/net/wireless/marvell/mwifiex/usb.c index 2c4225e57c39..3a26add665ca 100644 --- a/drivers/net/wireless/marvell/mwifiex/usb.c +++ b/drivers/net/wireless/marvell/mwifiex/usb.c @@ -132,7 +132,8 @@ static int mwifiex_usb_recv(struct mwifiex_adapter *adapter, default: mwifiex_dbg(adapter, ERROR, "unknown recv_type %#x\n", recv_type); - return -1; + ret = -1; + goto exit_restore_skb; } break; case MWIFIEX_USB_EP_DATA: diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192cu/hw.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192cu/hw.c index 39a6bd314ca3..264c1d57e10b 100644 --- a/drivers/net/wireless/realtek/rtlwifi/rtl8192cu/hw.c +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192cu/hw.c @@ -1037,6 +1037,7 @@ int rtl92cu_hw_init(struct ieee80211_hw *hw) _InitPABias(hw); rtl92c_dm_init(hw); exit: + local_irq_disable(); local_irq_restore(flags); return err; } diff --git a/drivers/parisc/pdc_stable.c b/drivers/parisc/pdc_stable.c index 3651c3871d5b..1b4aacf2ff9a 100644 --- a/drivers/parisc/pdc_stable.c +++ b/drivers/parisc/pdc_stable.c @@ -992,8 +992,10 @@ pdcs_register_pathentries(void) entry->kobj.kset = paths_kset; err = kobject_init_and_add(&entry->kobj, &ktype_pdcspath, NULL, "%s", entry->name); - if (err) + if (err) { + kobject_put(&entry->kobj); return err; + }
/* kobject is now registered */ write_lock(&entry->rw_lock); diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 3ff2971102b6..8d34c6d0de79 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3916,6 +3916,9 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9120, quirk_dma_func1_alias); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9123, quirk_dma_func1_alias); +/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c136 */ +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9125, + quirk_dma_func1_alias); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9128, quirk_dma_func1_alias); /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c14 */ diff --git a/drivers/pcmcia/cs.c b/drivers/pcmcia/cs.c index c3b615c94b4b..a92cbc952b70 100644 --- a/drivers/pcmcia/cs.c +++ b/drivers/pcmcia/cs.c @@ -665,18 +665,16 @@ static int pccardd(void *__skt) if (events || sysfs_events) continue;
+ set_current_state(TASK_INTERRUPTIBLE); if (kthread_should_stop()) break;
- set_current_state(TASK_INTERRUPTIBLE); - schedule();
- /* make sure we are running */ - __set_current_state(TASK_RUNNING); - try_to_freeze(); } + /* make sure we are running before we exit */ + __set_current_state(TASK_RUNNING);
/* shut down socket, if a device is still present */ if (skt->state & SOCKET_PRESENT) { diff --git a/drivers/pcmcia/rsrc_nonstatic.c b/drivers/pcmcia/rsrc_nonstatic.c index 5ef7b46a2578..2e96d9273b78 100644 --- a/drivers/pcmcia/rsrc_nonstatic.c +++ b/drivers/pcmcia/rsrc_nonstatic.c @@ -693,6 +693,9 @@ static struct resource *__nonstatic_find_io_region(struct pcmcia_socket *s, unsigned long min = base; int ret;
+ if (!res) + return NULL; + data.mask = align - 1; data.offset = base & data.mask; data.map = &s_data->io_db; @@ -812,6 +815,9 @@ static struct resource *nonstatic_find_mem_region(u_long base, u_long num, unsigned long min, max; int ret, i, j;
+ if (!res) + return NULL; + low = low || !(s->features & SS_CAP_PAGE_REGS);
data.mask = align - 1; diff --git a/drivers/power/supply/bq25890_charger.c b/drivers/power/supply/bq25890_charger.c index f993a55cde20..faf2a6243567 100644 --- a/drivers/power/supply/bq25890_charger.c +++ b/drivers/power/supply/bq25890_charger.c @@ -521,12 +521,12 @@ static void bq25890_handle_state_change(struct bq25890_device *bq,
if (!new_state->online) { /* power removed */ /* disable ADC */ - ret = bq25890_field_write(bq, F_CONV_START, 0); + ret = bq25890_field_write(bq, F_CONV_RATE, 0); if (ret < 0) goto error; } else if (!old_state.online) { /* power inserted */ /* enable ADC, to have control of charge current/voltage */ - ret = bq25890_field_write(bq, F_CONV_START, 1); + ret = bq25890_field_write(bq, F_CONV_RATE, 1); if (ret < 0) goto error; } diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c index b962dbe51750..1dbd8419df7d 100644 --- a/drivers/rtc/rtc-cmos.c +++ b/drivers/rtc/rtc-cmos.c @@ -342,7 +342,10 @@ static int cmos_set_alarm(struct device *dev, struct rtc_wkalrm *t) min = t->time.tm_min; sec = t->time.tm_sec;
+ spin_lock_irq(&rtc_lock); rtc_control = CMOS_READ(RTC_CONTROL); + spin_unlock_irq(&rtc_lock); + if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) { /* Writing 0xff means "don't care" or "match all". */ mon = (mon <= 12) ? bin2bcd(mon) : 0xff; diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c index 9b63e46edffc..a2a4c6e22c68 100644 --- a/drivers/scsi/sr.c +++ b/drivers/scsi/sr.c @@ -882,7 +882,7 @@ static void get_capabilities(struct scsi_cd *cd)
/* allocate transfer buffer */ - buffer = kmalloc(512, GFP_KERNEL | GFP_DMA); + buffer = kmalloc(512, GFP_KERNEL); if (!buffer) { sr_printk(KERN_ERR, cd, "out of memory.\n"); return; diff --git a/drivers/scsi/sr_vendor.c b/drivers/scsi/sr_vendor.c index 11a238cb2222..629bfe1b2026 100644 --- a/drivers/scsi/sr_vendor.c +++ b/drivers/scsi/sr_vendor.c @@ -118,7 +118,7 @@ int sr_set_blocklength(Scsi_CD *cd, int blocklength) density = (blocklength > 2048) ? 0x81 : 0x83; #endif
- buffer = kmalloc(512, GFP_KERNEL | GFP_DMA); + buffer = kmalloc(512, GFP_KERNEL); if (!buffer) return -ENOMEM;
@@ -166,7 +166,7 @@ int sr_cd_check(struct cdrom_device_info *cdi) if (cd->cdi.mask & CDC_MULTI_SESSION) return 0;
- buffer = kmalloc(512, GFP_KERNEL | GFP_DMA); + buffer = kmalloc(512, GFP_KERNEL); if (!buffer) return -ENOMEM;
diff --git a/drivers/scsi/ufs/tc-dwc-g210-pci.c b/drivers/scsi/ufs/tc-dwc-g210-pci.c index c09a0fef0fe6..a1785b023966 100644 --- a/drivers/scsi/ufs/tc-dwc-g210-pci.c +++ b/drivers/scsi/ufs/tc-dwc-g210-pci.c @@ -140,7 +140,6 @@ tc_dwc_g210_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) return err; }
- pci_set_drvdata(pdev, hba); pm_runtime_put_noidle(&pdev->dev); pm_runtime_allow(&pdev->dev);
diff --git a/drivers/scsi/ufs/ufshcd-pltfrm.c b/drivers/scsi/ufs/ufshcd-pltfrm.c index b47decc1fb5b..e9b0cc4cbb4d 100644 --- a/drivers/scsi/ufs/ufshcd-pltfrm.c +++ b/drivers/scsi/ufs/ufshcd-pltfrm.c @@ -350,8 +350,6 @@ int ufshcd_pltfrm_init(struct platform_device *pdev, goto dealloc_host; }
- platform_set_drvdata(pdev, hba); - pm_runtime_set_active(&pdev->dev); pm_runtime_enable(&pdev->dev);
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index a767d942bfca..cf7946c84016 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -6766,6 +6766,13 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq) struct Scsi_Host *host = hba->host; struct device *dev = hba->dev;
+ /* + * dev_set_drvdata() must be called before any callbacks are registered + * that use dev_get_drvdata() (frequency scaling, clock scaling, hwmon, + * sysfs). + */ + dev_set_drvdata(dev, hba); + if (!mmio_base) { dev_err(hba->dev, "Invalid memory reference for mmio_base is NULL\n"); diff --git a/drivers/spi/spi-meson-spifc.c b/drivers/spi/spi-meson-spifc.c index 616566e793c6..28975b6f054f 100644 --- a/drivers/spi/spi-meson-spifc.c +++ b/drivers/spi/spi-meson-spifc.c @@ -357,6 +357,7 @@ static int meson_spifc_probe(struct platform_device *pdev) return 0; out_clk: clk_disable_unprepare(spifc->clk); + pm_runtime_disable(spifc->dev); out_err: spi_master_put(master); return ret; diff --git a/drivers/staging/wlan-ng/hfa384x_usb.c b/drivers/staging/wlan-ng/hfa384x_usb.c index 9d4e3b0d366f..fbaf3c407989 100644 --- a/drivers/staging/wlan-ng/hfa384x_usb.c +++ b/drivers/staging/wlan-ng/hfa384x_usb.c @@ -3848,18 +3848,18 @@ static void hfa384x_usb_throttlefn(unsigned long data)
spin_lock_irqsave(&hw->ctlxq.lock, flags);
- /* - * We need to check BOTH the RX and the TX throttle controls, - * so we use the bitwise OR instead of the logical OR. - */ pr_debug("flags=0x%lx\n", hw->usb_flags); - if (!hw->wlandev->hwremoved && - ((test_and_clear_bit(THROTTLE_RX, &hw->usb_flags) && - !test_and_set_bit(WORK_RX_RESUME, &hw->usb_flags)) | - (test_and_clear_bit(THROTTLE_TX, &hw->usb_flags) && - !test_and_set_bit(WORK_TX_RESUME, &hw->usb_flags)) - )) { - schedule_work(&hw->usb_work); + if (!hw->wlandev->hwremoved) { + bool rx_throttle = test_and_clear_bit(THROTTLE_RX, &hw->usb_flags) && + !test_and_set_bit(WORK_RX_RESUME, &hw->usb_flags); + bool tx_throttle = test_and_clear_bit(THROTTLE_TX, &hw->usb_flags) && + !test_and_set_bit(WORK_TX_RESUME, &hw->usb_flags); + /* + * We need to check BOTH the RX and the TX throttle controls, + * so we use the bitwise OR instead of the logical OR. + */ + if (rx_throttle | tx_throttle) + schedule_work(&hw->usb_work); }
spin_unlock_irqrestore(&hw->ctlxq.lock, flags); diff --git a/drivers/tty/serial/amba-pl010.c b/drivers/tty/serial/amba-pl010.c index 5d41d5b92619..7f4ba9273966 100644 --- a/drivers/tty/serial/amba-pl010.c +++ b/drivers/tty/serial/amba-pl010.c @@ -465,14 +465,11 @@ pl010_set_termios(struct uart_port *port, struct ktermios *termios, if ((termios->c_cflag & CREAD) == 0) uap->port.ignore_status_mask |= UART_DUMMY_RSR_RX;
- /* first, disable everything */ old_cr = readb(uap->port.membase + UART010_CR) & ~UART010_CR_MSIE;
if (UART_ENABLE_MS(port, termios->c_cflag)) old_cr |= UART010_CR_MSIE;
- writel(0, uap->port.membase + UART010_CR); - /* Set baud rate */ quot -= 1; writel((quot & 0xf00) >> 8, uap->port.membase + UART010_LCRM); diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index e91bdd7d4c05..ad1d665e9962 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -2090,32 +2090,13 @@ static const char *pl011_type(struct uart_port *port) return uap->port.type == PORT_AMBA ? uap->type : NULL; }
-/* - * Release the memory region(s) being used by 'port' - */ -static void pl011_release_port(struct uart_port *port) -{ - release_mem_region(port->mapbase, SZ_4K); -} - -/* - * Request the memory region(s) being used by 'port' - */ -static int pl011_request_port(struct uart_port *port) -{ - return request_mem_region(port->mapbase, SZ_4K, "uart-pl011") - != NULL ? 0 : -EBUSY; -} - /* * Configure/autoconfigure the port. */ static void pl011_config_port(struct uart_port *port, int flags) { - if (flags & UART_CONFIG_TYPE) { + if (flags & UART_CONFIG_TYPE) port->type = PORT_AMBA; - pl011_request_port(port); - } }
/* @@ -2130,6 +2111,8 @@ static int pl011_verify_port(struct uart_port *port, struct serial_struct *ser) ret = -EINVAL; if (ser->baud_base < 9600) ret = -EINVAL; + if (port->mapbase != (unsigned long) ser->iomem_base) + ret = -EINVAL; return ret; }
@@ -2147,8 +2130,6 @@ static struct uart_ops amba_pl011_pops = { .flush_buffer = pl011_dma_flush_buffer, .set_termios = pl011_set_termios, .type = pl011_type, - .release_port = pl011_release_port, - .request_port = pl011_request_port, .config_port = pl011_config_port, .verify_port = pl011_verify_port, #ifdef CONFIG_CONSOLE_POLL @@ -2178,8 +2159,6 @@ static const struct uart_ops sbsa_uart_pops = { .shutdown = sbsa_uart_shutdown, .set_termios = sbsa_uart_set_termios, .type = pl011_type, - .release_port = pl011_release_port, - .request_port = pl011_request_port, .config_port = pl011_config_port, .verify_port = pl011_verify_port, #ifdef CONFIG_CONSOLE_POLL diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c index 4a7eb85f7c85..5dd04a1145b4 100644 --- a/drivers/tty/serial/atmel_serial.c +++ b/drivers/tty/serial/atmel_serial.c @@ -928,6 +928,13 @@ static void atmel_tx_dma(struct uart_port *port) desc->callback = atmel_complete_tx_dma; desc->callback_param = atmel_port; atmel_port->cookie_tx = dmaengine_submit(desc); + if (dma_submit_error(atmel_port->cookie_tx)) { + dev_err(port->dev, "dma_submit_error %d\n", + atmel_port->cookie_tx); + return; + } + + dma_async_issue_pending(chan); }
if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) @@ -1186,6 +1193,13 @@ static int atmel_prepare_rx_dma(struct uart_port *port) desc->callback_param = port; atmel_port->desc_rx = desc; atmel_port->cookie_rx = dmaengine_submit(desc); + if (dma_submit_error(atmel_port->cookie_rx)) { + dev_err(port->dev, "dma_submit_error %d\n", + atmel_port->cookie_rx); + goto chan_err; + } + + dma_async_issue_pending(atmel_port->chan_rx);
return 0;
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index e97961dc3622..ec458add3883 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -2349,7 +2349,8 @@ uart_configure_port(struct uart_driver *drv, struct uart_state *state, * We probably don't need a spinlock around this, but */ spin_lock_irqsave(&port->lock, flags); - port->ops->set_mctrl(port, port->mctrl & TIOCM_DTR); + port->mctrl &= TIOCM_DTR; + port->ops->set_mctrl(port, port->mctrl); spin_unlock_irqrestore(&port->lock, flags);
/* diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 1dd4c65e9188..2246731d96b0 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -760,6 +760,7 @@ void usb_hcd_poll_rh_status(struct usb_hcd *hcd) { struct urb *urb; int length; + int status; unsigned long flags; char buffer[6]; /* Any root hubs with > 31 ports? */
@@ -777,11 +778,17 @@ void usb_hcd_poll_rh_status(struct usb_hcd *hcd) if (urb) { clear_bit(HCD_FLAG_POLL_PENDING, &hcd->flags); hcd->status_urb = NULL; + if (urb->transfer_buffer_length >= length) { + status = 0; + } else { + status = -EOVERFLOW; + length = urb->transfer_buffer_length; + } urb->actual_length = length; memcpy(urb->transfer_buffer, buffer, length);
usb_hcd_unlink_urb_from_ep(hcd, urb); - usb_hcd_giveback_urb(hcd, urb, 0); + usb_hcd_giveback_urb(hcd, urb, status); } else { length = 0; set_bit(HCD_FLAG_POLL_PENDING, &hcd->flags); diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 0abcf8bbb73f..33bf5ba43839 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -1070,7 +1070,10 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type) } else { hub_power_on(hub, true); } - } + /* Give some time on remote wakeup to let links to transit to U0 */ + } else if (hub_is_superspeed(hub->hdev)) + msleep(20); + init2:
/* @@ -1185,7 +1188,7 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type) */ if (portchange || (hub_is_superspeed(hub->hdev) && port_resumed)) - set_bit(port1, hub->change_bits); + set_bit(port1, hub->event_bits);
} else if (udev->persist_enabled) { #ifdef CONFIG_PM diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index 033639268693..e4826454de1a 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -608,7 +608,7 @@ static int ffs_ep0_open(struct inode *inode, struct file *file) file->private_data = ffs; ffs_data_opened(ffs);
- return 0; + return stream_open(inode, file); }
static int ffs_ep0_release(struct inode *inode, struct file *file) @@ -1071,7 +1071,7 @@ ffs_epfile_open(struct inode *inode, struct file *file) file->private_data = epfile; ffs_data_opened(epfile->ffs);
- return 0; + return stream_open(inode, file); }
static int ffs_aio_cancel(struct kiocb *kiocb) diff --git a/drivers/usb/misc/ftdi-elan.c b/drivers/usb/misc/ftdi-elan.c index 9a82f8308ad7..0738078fe8b8 100644 --- a/drivers/usb/misc/ftdi-elan.c +++ b/drivers/usb/misc/ftdi-elan.c @@ -206,6 +206,7 @@ static void ftdi_elan_delete(struct kref *kref) mutex_unlock(&ftdi_module_lock); kfree(ftdi->bulk_in_buffer); ftdi->bulk_in_buffer = NULL; + kfree(ftdi); }
static void ftdi_elan_put_kref(struct usb_ftdi *ftdi) diff --git a/drivers/w1/slaves/w1_ds28e04.c b/drivers/w1/slaves/w1_ds28e04.c index 5e348d38ec5c..f4cf54c256fd 100644 --- a/drivers/w1/slaves/w1_ds28e04.c +++ b/drivers/w1/slaves/w1_ds28e04.c @@ -39,7 +39,7 @@ static int w1_strong_pullup = 1; module_param_named(strong_pullup, w1_strong_pullup, int, 0);
/* enable/disable CRC checking on DS28E04-100 memory accesses */ -static char w1_enable_crccheck = 1; +static bool w1_enable_crccheck = true;
#define W1_EEPROM_SIZE 512 #define W1_PAGE_COUNT 16 @@ -346,32 +346,18 @@ static BIN_ATTR_RW(pio, 1); static ssize_t crccheck_show(struct device *dev, struct device_attribute *attr, char *buf) { - if (put_user(w1_enable_crccheck + 0x30, buf)) - return -EFAULT; - - return sizeof(w1_enable_crccheck); + return sysfs_emit(buf, "%d\n", w1_enable_crccheck); }
static ssize_t crccheck_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - char val; - - if (count != 1 || !buf) - return -EINVAL; + int err = kstrtobool(buf, &w1_enable_crccheck);
- if (get_user(val, buf)) - return -EFAULT; + if (err) + return err;
- /* convert to decimal */ - val = val - 0x30; - if (val != 0 && val != 1) - return -EINVAL; - - /* set the new value */ - w1_enable_crccheck = val; - - return sizeof(w1_enable_crccheck); + return count; }
static DEVICE_ATTR_RW(crccheck); diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index bb008ac507fe..16169b35ab6e 100644 --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -1271,7 +1271,12 @@ static int find_parent_nodes(struct btrfs_trans_handle *trans, ret = btrfs_search_slot(trans, fs_info->extent_root, &key, path, 0, 0); if (ret < 0) goto out; - BUG_ON(ret == 0); + if (ret == 0) { + /* This shouldn't happen, indicates a bug or fs corruption. */ + ASSERT(ret != 0); + ret = -EUCLEAN; + goto out; + }
#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS if (trans && likely(trans->type != __TRANS_DUMMY) && @@ -1432,10 +1437,18 @@ static int find_parent_nodes(struct btrfs_trans_handle *trans, goto out; if (!ret && extent_item_pos) { /* - * we've recorded that parent, so we must extend - * its inode list here + * We've recorded that parent, so we must extend + * its inode list here. + * + * However if there was corruption we may not + * have found an eie, return an error in this + * case. */ - BUG_ON(!eie); + ASSERT(eie); + if (!eie) { + ret = -EUCLEAN; + goto out; + } while (eie->next) eie = eie->next; eie->next = ref->inode_list; diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c index 3a7f401e943c..ffab7dc88157 100644 --- a/fs/dlm/lock.c +++ b/fs/dlm/lock.c @@ -3975,6 +3975,14 @@ static int validate_message(struct dlm_lkb *lkb, struct dlm_message *ms) int from = ms->m_header.h_nodeid; int error = 0;
+ /* currently mixing of user/kernel locks are not supported */ + if (ms->m_flags & DLM_IFL_USER && ~lkb->lkb_flags & DLM_IFL_USER) { + log_error(lkb->lkb_resource->res_ls, + "got user dlm message for a kernel lock"); + error = -EINVAL; + goto out; + } + switch (ms->m_type) { case DLM_MSG_CONVERT: case DLM_MSG_UNLOCK: @@ -4003,6 +4011,7 @@ static int validate_message(struct dlm_lkb *lkb, struct dlm_message *ms) error = -EINVAL; }
+out: if (error) log_error(lkb->lkb_resource->res_ls, "ignore invalid message %d from %d %x %x %x %d", diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index 75fff707beb6..e7384a6e6a08 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -760,8 +760,6 @@ long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) sizeof(range))) return -EFAULT;
- range.minlen = max((unsigned int)range.minlen, - q->limits.discard_granularity); ret = ext4_trim_fs(sb, &range); if (ret < 0) return ret; diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 807331da9dfc..2a7fb2cf19b8 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -5224,6 +5224,7 @@ ext4_trim_all_free(struct super_block *sb, ext4_group_t group, */ int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range) { + struct request_queue *q = bdev_get_queue(sb->s_bdev); struct ext4_group_info *grp; ext4_group_t group, first_group, last_group; ext4_grpblk_t cnt = 0, first_cluster, last_cluster; @@ -5242,6 +5243,13 @@ int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range) start >= max_blks || range->len < sb->s_blocksize) return -EINVAL; + /* No point to try to trim less than discard granularity */ + if (range->minlen < q->limits.discard_granularity) { + minlen = EXT4_NUM_B2C(EXT4_SB(sb), + q->limits.discard_granularity >> sb->s_blocksize_bits); + if (minlen > EXT4_CLUSTERS_PER_GROUP(sb)) + goto out; + } if (end >= max_blks) end = max_blks - 1; if (end <= first_data_blk) diff --git a/fs/ext4/migrate.c b/fs/ext4/migrate.c index bce2d696d6b9..6967ab3306e7 100644 --- a/fs/ext4/migrate.c +++ b/fs/ext4/migrate.c @@ -462,12 +462,12 @@ int ext4_ext_migrate(struct inode *inode) percpu_down_write(&sbi->s_writepages_rwsem);
/* - * Worst case we can touch the allocation bitmaps, a bgd - * block, and a block to link in the orphan list. We do need - * need to worry about credits for modifying the quota inode. + * Worst case we can touch the allocation bitmaps and a block + * group descriptor block. We do need need to worry about + * credits for modifying the quota inode. */ handle = ext4_journal_start(inode, EXT4_HT_MIGRATE, - 4 + EXT4_MAXQUOTAS_TRANS_BLOCKS(inode->i_sb)); + 3 + EXT4_MAXQUOTAS_TRANS_BLOCKS(inode->i_sb));
if (IS_ERR(handle)) { retval = PTR_ERR(handle); @@ -484,6 +484,13 @@ int ext4_ext_migrate(struct inode *inode) ext4_journal_stop(handle); goto out_unlock; } + /* + * Use the correct seed for checksum (i.e. the seed from 'inode'). This + * is so that the metadata blocks will have the correct checksum after + * the migration. + */ + ei = EXT4_I(inode); + EXT4_I(tmp_inode)->i_csum_seed = ei->i_csum_seed; i_size_write(tmp_inode, i_size_read(inode)); /* * Set the i_nlink to zero so it will be deleted later @@ -492,7 +499,6 @@ int ext4_ext_migrate(struct inode *inode) clear_nlink(tmp_inode);
ext4_ext_tree_init(handle, tmp_inode); - ext4_orphan_add(handle, tmp_inode); ext4_journal_stop(handle);
/* @@ -517,17 +523,10 @@ int ext4_ext_migrate(struct inode *inode)
handle = ext4_journal_start(inode, EXT4_HT_MIGRATE, 1); if (IS_ERR(handle)) { - /* - * It is impossible to update on-disk structures without - * a handle, so just rollback in-core changes and live other - * work to orphan_list_cleanup() - */ - ext4_orphan_del(NULL, tmp_inode); retval = PTR_ERR(handle); goto out_tmp_inode; }
- ei = EXT4_I(inode); i_data = ei->i_data; memset(&lb, 0, sizeof(lb));
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index ca89590d1df5..e17a6396bde6 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -5602,7 +5602,7 @@ static ssize_t ext4_quota_write(struct super_block *sb, int type, struct buffer_head *bh; handle_t *handle = journal_current_handle();
- if (EXT4_SB(sb)->s_journal && !handle) { + if (!handle) { ext4_msg(sb, KERN_WARNING, "Quota write (off=%llu, len=%llu)" " cancelled because transaction is not started", (unsigned long long)off, (unsigned long long)len); diff --git a/fs/fuse/acl.c b/fs/fuse/acl.c index ec85765502f1..990529da5354 100644 --- a/fs/fuse/acl.c +++ b/fs/fuse/acl.c @@ -19,6 +19,9 @@ struct posix_acl *fuse_get_acl(struct inode *inode, int type) void *value = NULL; struct posix_acl *acl;
+ if (fuse_is_bad(inode)) + return ERR_PTR(-EIO); + if (!fc->posix_acl || fc->no_getxattr) return NULL;
@@ -53,6 +56,9 @@ int fuse_set_acl(struct inode *inode, struct posix_acl *acl, int type) const char *name; int ret;
+ if (fuse_is_bad(inode)) + return -EIO; + if (!fc->posix_acl || fc->no_setxattr) return -EOPNOTSUPP;
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index b41cc537eb31..c40bdfab0a85 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -187,7 +187,7 @@ static int fuse_dentry_revalidate(struct dentry *entry, unsigned int flags) int ret;
inode = d_inode_rcu(entry); - if (inode && is_bad_inode(inode)) + if (inode && fuse_is_bad(inode)) goto invalid; else if (time_before64(fuse_dentry_time(entry), get_jiffies_64()) || (flags & LOOKUP_REVAL)) { @@ -364,6 +364,9 @@ static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry, bool outarg_valid = true; bool locked;
+ if (fuse_is_bad(dir)) + return ERR_PTR(-EIO); + locked = fuse_lock_inode(dir); err = fuse_lookup_name(dir->i_sb, get_node_id(dir), &entry->d_name, &outarg, &inode); @@ -504,6 +507,9 @@ static int fuse_atomic_open(struct inode *dir, struct dentry *entry, struct fuse_conn *fc = get_fuse_conn(dir); struct dentry *res = NULL;
+ if (fuse_is_bad(dir)) + return -EIO; + if (d_in_lookup(entry)) { res = fuse_lookup(dir, entry, 0); if (IS_ERR(res)) @@ -551,6 +557,9 @@ static int create_new_entry(struct fuse_conn *fc, struct fuse_args *args, int err; struct fuse_forget_link *forget;
+ if (fuse_is_bad(dir)) + return -EIO; + forget = fuse_alloc_forget(); if (!forget) return -ENOMEM; @@ -672,6 +681,9 @@ static int fuse_unlink(struct inode *dir, struct dentry *entry) struct fuse_conn *fc = get_fuse_conn(dir); FUSE_ARGS(args);
+ if (fuse_is_bad(dir)) + return -EIO; + args.in.h.opcode = FUSE_UNLINK; args.in.h.nodeid = get_node_id(dir); args.in.numargs = 1; @@ -708,6 +720,9 @@ static int fuse_rmdir(struct inode *dir, struct dentry *entry) struct fuse_conn *fc = get_fuse_conn(dir); FUSE_ARGS(args);
+ if (fuse_is_bad(dir)) + return -EIO; + args.in.h.opcode = FUSE_RMDIR; args.in.h.nodeid = get_node_id(dir); args.in.numargs = 1; @@ -786,6 +801,9 @@ static int fuse_rename2(struct inode *olddir, struct dentry *oldent, struct fuse_conn *fc = get_fuse_conn(olddir); int err;
+ if (fuse_is_bad(olddir)) + return -EIO; + if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE)) return -EINVAL;
@@ -921,7 +939,7 @@ static int fuse_do_getattr(struct inode *inode, struct kstat *stat, if (!err) { if (fuse_invalid_attr(&outarg.attr) || (inode->i_mode ^ outarg.attr.mode) & S_IFMT) { - make_bad_inode(inode); + fuse_make_bad(inode); err = -EIO; } else { fuse_change_attributes(inode, &outarg.attr, @@ -1114,6 +1132,9 @@ static int fuse_permission(struct inode *inode, int mask) bool refreshed = false; int err = 0;
+ if (fuse_is_bad(inode)) + return -EIO; + if (!fuse_allow_current_process(fc)) return -EACCES;
@@ -1251,7 +1272,7 @@ static int fuse_direntplus_link(struct file *file, dput(dentry); goto retry; } - if (is_bad_inode(inode)) { + if (fuse_is_bad(inode)) { dput(dentry); return -EIO; } @@ -1349,7 +1370,7 @@ static int fuse_readdir(struct file *file, struct dir_context *ctx) u64 attr_version = 0; bool locked;
- if (is_bad_inode(inode)) + if (fuse_is_bad(inode)) return -EIO;
req = fuse_get_req(fc, 1); @@ -1409,6 +1430,9 @@ static const char *fuse_get_link(struct dentry *dentry, if (!dentry) return ERR_PTR(-ECHILD);
+ if (fuse_is_bad(inode)) + return ERR_PTR(-EIO); + link = kmalloc(PAGE_SIZE, GFP_KERNEL); if (!link) return ERR_PTR(-ENOMEM); @@ -1707,7 +1731,7 @@ int fuse_do_setattr(struct dentry *dentry, struct iattr *attr,
if (fuse_invalid_attr(&outarg.attr) || (inode->i_mode ^ outarg.attr.mode) & S_IFMT) { - make_bad_inode(inode); + fuse_make_bad(inode); err = -EIO; goto error; } @@ -1763,6 +1787,9 @@ static int fuse_setattr(struct dentry *entry, struct iattr *attr) struct file *file = (attr->ia_valid & ATTR_FILE) ? attr->ia_file : NULL; int ret;
+ if (fuse_is_bad(inode)) + return -EIO; + if (!fuse_allow_current_process(get_fuse_conn(inode))) return -EACCES;
@@ -1821,6 +1848,9 @@ static int fuse_getattr(struct vfsmount *mnt, struct dentry *entry, struct inode *inode = d_inode(entry); struct fuse_conn *fc = get_fuse_conn(inode);
+ if (fuse_is_bad(inode)) + return -EIO; + if (!fuse_allow_current_process(fc)) return -EACCES;
diff --git a/fs/fuse/file.c b/fs/fuse/file.c index cea2317e0138..8aef8e56eb1b 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -206,6 +206,9 @@ int fuse_open_common(struct inode *inode, struct file *file, bool isdir) fc->atomic_o_trunc && fc->writeback_cache;
+ if (fuse_is_bad(inode)) + return -EIO; + err = generic_file_open(inode, file); if (err) return err; @@ -411,7 +414,7 @@ static int fuse_flush(struct file *file, fl_owner_t id) struct fuse_flush_in inarg; int err;
- if (is_bad_inode(inode)) + if (fuse_is_bad(inode)) return -EIO;
if (fc->no_flush) @@ -459,7 +462,7 @@ int fuse_fsync_common(struct file *file, loff_t start, loff_t end, struct fuse_fsync_in inarg; int err;
- if (is_bad_inode(inode)) + if (fuse_is_bad(inode)) return -EIO;
inode_lock(inode); @@ -771,7 +774,7 @@ static int fuse_readpage(struct file *file, struct page *page) int err;
err = -EIO; - if (is_bad_inode(inode)) + if (fuse_is_bad(inode)) goto out;
err = fuse_do_readpage(file, page); @@ -898,7 +901,7 @@ static int fuse_readpages(struct file *file, struct address_space *mapping, int nr_alloc = min_t(unsigned, nr_pages, FUSE_MAX_PAGES_PER_REQ);
err = -EIO; - if (is_bad_inode(inode)) + if (fuse_is_bad(inode)) goto out;
data.file = file; @@ -928,6 +931,9 @@ static ssize_t fuse_file_read_iter(struct kiocb *iocb, struct iov_iter *to) struct inode *inode = iocb->ki_filp->f_mapping->host; struct fuse_conn *fc = get_fuse_conn(inode);
+ if (fuse_is_bad(inode)) + return -EIO; + /* * In auto invalidate mode, always update attributes on read. * Otherwise, only update if we attempt to read past EOF (to ensure @@ -1123,7 +1129,7 @@ static ssize_t fuse_perform_write(struct file *file, int err = 0; ssize_t res = 0;
- if (is_bad_inode(inode)) + if (fuse_is_bad(inode)) return -EIO;
if (inode->i_size < pos + iov_iter_count(ii)) @@ -1180,6 +1186,9 @@ static ssize_t fuse_file_write_iter(struct kiocb *iocb, struct iov_iter *from) ssize_t err; loff_t endbyte = 0;
+ if (fuse_is_bad(inode)) + return -EIO; + if (get_fuse_conn(inode)->writeback_cache) { /* Update size (EOF optimization) and mode (SUID clearing) */ err = fuse_update_attributes(mapping->host, NULL, file, NULL); @@ -1415,7 +1424,7 @@ static ssize_t __fuse_direct_read(struct fuse_io_priv *io, struct file *file = io->file; struct inode *inode = file_inode(file);
- if (is_bad_inode(inode)) + if (fuse_is_bad(inode)) return -EIO;
res = fuse_direct_io(io, iter, ppos, 0); @@ -1438,7 +1447,7 @@ static ssize_t fuse_direct_write_iter(struct kiocb *iocb, struct iov_iter *from) struct fuse_io_priv io = FUSE_IO_PRIV_SYNC(file); ssize_t res;
- if (is_bad_inode(inode)) + if (fuse_is_bad(inode)) return -EIO;
/* Don't allow parallel writes to the same file */ @@ -1911,7 +1920,7 @@ static int fuse_writepages(struct address_space *mapping, int err;
err = -EIO; - if (is_bad_inode(inode)) + if (fuse_is_bad(inode)) goto out;
data.inode = inode; @@ -2687,7 +2696,7 @@ long fuse_ioctl_common(struct file *file, unsigned int cmd, if (!fuse_allow_current_process(fc)) return -EACCES;
- if (is_bad_inode(inode)) + if (fuse_is_bad(inode)) return -EIO;
return fuse_do_ioctl(file, cmd, arg, flags); diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index f84dd6d87d90..7e4b0e298bc7 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -115,6 +115,8 @@ enum { FUSE_I_INIT_RDPLUS, /** An operation changing file size is in progress */ FUSE_I_SIZE_UNSTABLE, + /* Bad inode */ + FUSE_I_BAD, };
struct fuse_conn; @@ -688,6 +690,17 @@ static inline u64 get_node_id(struct inode *inode) return get_fuse_inode(inode)->nodeid; }
+static inline void fuse_make_bad(struct inode *inode) +{ + remove_inode_hash(inode); + set_bit(FUSE_I_BAD, &get_fuse_inode(inode)->state); +} + +static inline bool fuse_is_bad(struct inode *inode) +{ + return unlikely(test_bit(FUSE_I_BAD, &get_fuse_inode(inode)->state)); +} + /** Device operations */ extern const struct file_operations fuse_dev_operations;
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index 7a9b1069d267..77b8f0f26407 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -316,7 +316,7 @@ struct inode *fuse_iget(struct super_block *sb, u64 nodeid, unlock_new_inode(inode); } else if ((inode->i_mode ^ attr->mode) & S_IFMT) { /* Inode has changed type, any I/O on the old should fail */ - make_bad_inode(inode); + fuse_make_bad(inode); iput(inode); goto retry; } diff --git a/fs/fuse/xattr.c b/fs/fuse/xattr.c index 3caac46b08b0..134bbc432ae6 100644 --- a/fs/fuse/xattr.c +++ b/fs/fuse/xattr.c @@ -113,6 +113,9 @@ ssize_t fuse_listxattr(struct dentry *entry, char *list, size_t size) struct fuse_getxattr_out outarg; ssize_t ret;
+ if (fuse_is_bad(inode)) + return -EIO; + if (!fuse_allow_current_process(fc)) return -EACCES;
@@ -178,6 +181,9 @@ static int fuse_xattr_get(const struct xattr_handler *handler, struct dentry *dentry, struct inode *inode, const char *name, void *value, size_t size) { + if (fuse_is_bad(inode)) + return -EIO; + return fuse_getxattr(inode, name, value, size); }
@@ -186,6 +192,9 @@ static int fuse_xattr_set(const struct xattr_handler *handler, const char *name, const void *value, size_t size, int flags) { + if (fuse_is_bad(inode)) + return -EIO; + if (!value) return fuse_removexattr(inode, name);
diff --git a/fs/jffs2/file.c b/fs/jffs2/file.c index c12476e309c6..eb4e4d784d26 100644 --- a/fs/jffs2/file.c +++ b/fs/jffs2/file.c @@ -135,20 +135,15 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping, struct page *pg; struct inode *inode = mapping->host; struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode); + struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb); pgoff_t index = pos >> PAGE_SHIFT; uint32_t pageofs = index << PAGE_SHIFT; int ret = 0;
- pg = grab_cache_page_write_begin(mapping, index, flags); - if (!pg) - return -ENOMEM; - *pagep = pg; - jffs2_dbg(1, "%s()\n", __func__);
if (pageofs > inode->i_size) { /* Make new hole frag from old EOF to new page */ - struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb); struct jffs2_raw_inode ri; struct jffs2_full_dnode *fn; uint32_t alloc_len; @@ -159,7 +154,7 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping, ret = jffs2_reserve_space(c, sizeof(ri), &alloc_len, ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE); if (ret) - goto out_page; + goto out_err;
mutex_lock(&f->sem); memset(&ri, 0, sizeof(ri)); @@ -189,7 +184,7 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping, ret = PTR_ERR(fn); jffs2_complete_reservation(c); mutex_unlock(&f->sem); - goto out_page; + goto out_err; } ret = jffs2_add_full_dnode_to_inode(c, f, fn); if (f->metadata) { @@ -204,13 +199,26 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping, jffs2_free_full_dnode(fn); jffs2_complete_reservation(c); mutex_unlock(&f->sem); - goto out_page; + goto out_err; } jffs2_complete_reservation(c); inode->i_size = pageofs; mutex_unlock(&f->sem); }
+ /* + * While getting a page and reading data in, lock c->alloc_sem until + * the page is Uptodate. Otherwise GC task may attempt to read the same + * page in read_cache_page(), which causes a deadlock. + */ + mutex_lock(&c->alloc_sem); + pg = grab_cache_page_write_begin(mapping, index, flags); + if (!pg) { + ret = -ENOMEM; + goto release_sem; + } + *pagep = pg; + /* * Read in the page if it wasn't already present. Cannot optimize away * the whole page write case until jffs2_write_end can handle the @@ -220,15 +228,17 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping, mutex_lock(&f->sem); ret = jffs2_do_readpage_nolock(inode, pg); mutex_unlock(&f->sem); - if (ret) - goto out_page; + if (ret) { + unlock_page(pg); + put_page(pg); + goto release_sem; + } } jffs2_dbg(1, "end write_begin(). pg->flags %lx\n", pg->flags); - return ret;
-out_page: - unlock_page(pg); - put_page(pg); +release_sem: + mutex_unlock(&c->alloc_sem); +out_err: return ret; }
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c index 727a9e3fa806..ce58e857ae3b 100644 --- a/fs/ubifs/super.c +++ b/fs/ubifs/super.c @@ -1695,7 +1695,6 @@ static int ubifs_remount_rw(struct ubifs_info *c) kthread_stop(c->bgt); c->bgt = NULL; } - free_wbufs(c); kfree(c->write_reserve_buf); c->write_reserve_buf = NULL; vfree(c->ileb_buf); diff --git a/include/linux/mm.h b/include/linux/mm.h index 7a4c035b187f..81ee5d0b2642 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1269,6 +1269,8 @@ int copy_page_range(struct mm_struct *dst, struct mm_struct *src, struct vm_area_struct *vma); void unmap_mapping_range(struct address_space *mapping, loff_t const holebegin, loff_t const holelen, int even_cows); +int follow_pte_pmd(struct mm_struct *mm, unsigned long address, + pte_t **ptepp, pmd_t **pmdpp, spinlock_t **ptlp); int follow_pfn(struct vm_area_struct *vma, unsigned long address, unsigned long *pfn); int follow_phys(struct vm_area_struct *vma, unsigned long address, diff --git a/include/linux/rbtree.h b/include/linux/rbtree.h index e585018498d5..d574361943ea 100644 --- a/include/linux/rbtree.h +++ b/include/linux/rbtree.h @@ -44,10 +44,25 @@ struct rb_root { struct rb_node *rb_node; };
+/* + * Leftmost-cached rbtrees. + * + * We do not cache the rightmost node based on footprint + * size vs number of potential users that could benefit + * from O(1) rb_last(). Just not worth it, users that want + * this feature can always implement the logic explicitly. + * Furthermore, users that want to cache both pointers may + * find it a bit asymmetric, but that's ok. + */ +struct rb_root_cached { + struct rb_root rb_root; + struct rb_node *rb_leftmost; +};
#define rb_parent(r) ((struct rb_node *)((r)->__rb_parent_color & ~3))
#define RB_ROOT (struct rb_root) { NULL, } +#define RB_ROOT_CACHED (struct rb_root_cached) { {NULL, }, NULL } #define rb_entry(ptr, type, member) container_of(ptr, type, member)
#define RB_EMPTY_ROOT(root) (READ_ONCE((root)->rb_node) == NULL) @@ -69,6 +84,12 @@ extern struct rb_node *rb_prev(const struct rb_node *); extern struct rb_node *rb_first(const struct rb_root *); extern struct rb_node *rb_last(const struct rb_root *);
+extern void rb_insert_color_cached(struct rb_node *, + struct rb_root_cached *, bool); +extern void rb_erase_cached(struct rb_node *node, struct rb_root_cached *); +/* Same as rb_first(), but O(1) */ +#define rb_first_cached(root) (root)->rb_leftmost + /* Postorder iteration - always visit the parent after its children */ extern struct rb_node *rb_first_postorder(const struct rb_root *); extern struct rb_node *rb_next_postorder(const struct rb_node *); diff --git a/include/linux/rbtree_augmented.h b/include/linux/rbtree_augmented.h index d076183e49be..023d64657e95 100644 --- a/include/linux/rbtree_augmented.h +++ b/include/linux/rbtree_augmented.h @@ -41,7 +41,9 @@ struct rb_augment_callbacks { void (*rotate)(struct rb_node *old, struct rb_node *new); };
-extern void __rb_insert_augmented(struct rb_node *node, struct rb_root *root, +extern void __rb_insert_augmented(struct rb_node *node, + struct rb_root *root, + bool newleft, struct rb_node **leftmost, void (*augment_rotate)(struct rb_node *old, struct rb_node *new)); /* * Fixup the rbtree and update the augmented information when rebalancing. @@ -57,7 +59,16 @@ static inline void rb_insert_augmented(struct rb_node *node, struct rb_root *root, const struct rb_augment_callbacks *augment) { - __rb_insert_augmented(node, root, augment->rotate); + __rb_insert_augmented(node, root, false, NULL, augment->rotate); +} + +static inline void +rb_insert_augmented_cached(struct rb_node *node, + struct rb_root_cached *root, bool newleft, + const struct rb_augment_callbacks *augment) +{ + __rb_insert_augmented(node, &root->rb_root, + newleft, &root->rb_leftmost, augment->rotate); }
#define RB_DECLARE_CALLBACKS(rbstatic, rbname, rbstruct, rbfield, \ @@ -148,6 +159,7 @@ extern void __rb_erase_color(struct rb_node *parent, struct rb_root *root,
static __always_inline struct rb_node * __rb_erase_augmented(struct rb_node *node, struct rb_root *root, + struct rb_node **leftmost, const struct rb_augment_callbacks *augment) { struct rb_node *child = node->rb_right; @@ -155,6 +167,9 @@ __rb_erase_augmented(struct rb_node *node, struct rb_root *root, struct rb_node *parent, *rebalance; unsigned long pc;
+ if (leftmost && node == *leftmost) + *leftmost = rb_next(node); + if (!tmp) { /* * Case 1: node to erase has no more than 1 child (easy!) @@ -254,9 +269,21 @@ static __always_inline void rb_erase_augmented(struct rb_node *node, struct rb_root *root, const struct rb_augment_callbacks *augment) { - struct rb_node *rebalance = __rb_erase_augmented(node, root, augment); + struct rb_node *rebalance = __rb_erase_augmented(node, root, + NULL, augment); if (rebalance) __rb_erase_color(rebalance, root, augment->rotate); }
+static __always_inline void +rb_erase_augmented_cached(struct rb_node *node, struct rb_root_cached *root, + const struct rb_augment_callbacks *augment) +{ + struct rb_node *rebalance = __rb_erase_augmented(node, &root->rb_root, + &root->rb_leftmost, + augment); + if (rebalance) + __rb_erase_color(rebalance, &root->rb_root, augment->rotate); +} + #endif /* _LINUX_RBTREE_AUGMENTED_H */ diff --git a/include/linux/timerqueue.h b/include/linux/timerqueue.h index 7eec17ad7fa1..42868a9b4365 100644 --- a/include/linux/timerqueue.h +++ b/include/linux/timerqueue.h @@ -11,8 +11,7 @@ struct timerqueue_node { };
struct timerqueue_head { - struct rb_root head; - struct timerqueue_node *next; + struct rb_root_cached rb_root; };
@@ -28,13 +27,14 @@ extern struct timerqueue_node *timerqueue_iterate_next( * * @head: head of timerqueue * - * Returns a pointer to the timer node that has the - * earliest expiration time. + * Returns a pointer to the timer node that has the earliest expiration time. */ static inline struct timerqueue_node *timerqueue_getnext(struct timerqueue_head *head) { - return head->next; + struct rb_node *leftmost = rb_first_cached(&head->rb_root); + + return rb_entry(leftmost, struct timerqueue_node, node); }
static inline void timerqueue_init(struct timerqueue_node *node) @@ -44,7 +44,6 @@ static inline void timerqueue_init(struct timerqueue_node *node)
static inline void timerqueue_init_head(struct timerqueue_head *head) { - head->head = RB_ROOT; - head->next = NULL; + head->rb_root = RB_ROOT_CACHED; } #endif /* _LINUX_TIMERQUEUE_H */ diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h index 5d5a137b9067..7ec889291dc4 100644 --- a/include/net/sch_generic.h +++ b/include/net/sch_generic.h @@ -837,6 +837,7 @@ struct psched_ratecfg { u64 rate_bytes_ps; /* bytes per second */ u32 mult; u16 overhead; + u16 mpu; u8 linklayer; u8 shift; }; @@ -846,6 +847,9 @@ static inline u64 psched_l2t_ns(const struct psched_ratecfg *r, { len += r->overhead;
+ if (len < r->mpu) + len = r->mpu; + if (unlikely(r->linklayer == TC_LINKLAYER_ATM)) return ((u64)(DIV_ROUND_UP(len,48)*53) * r->mult) >> r->shift;
@@ -868,6 +872,7 @@ static inline void psched_ratecfg_getrate(struct tc_ratespec *res, res->rate = min_t(u64, r->rate_bytes_ps, ~0U);
res->overhead = r->overhead; + res->mpu = r->mpu; res->linklayer = (r->linklayer & TC_LINKLAYER_MASK); }
diff --git a/lib/rbtree.c b/lib/rbtree.c index eb8a19fee110..53746be42903 100644 --- a/lib/rbtree.c +++ b/lib/rbtree.c @@ -95,10 +95,14 @@ __rb_rotate_set_parents(struct rb_node *old, struct rb_node *new,
static __always_inline void __rb_insert(struct rb_node *node, struct rb_root *root, + bool newleft, struct rb_node **leftmost, void (*augment_rotate)(struct rb_node *old, struct rb_node *new)) { struct rb_node *parent = rb_red_parent(node), *gparent, *tmp;
+ if (newleft) + *leftmost = node; + while (true) { /* * Loop invariant: node is red @@ -417,19 +421,38 @@ static const struct rb_augment_callbacks dummy_callbacks = {
void rb_insert_color(struct rb_node *node, struct rb_root *root) { - __rb_insert(node, root, dummy_rotate); + __rb_insert(node, root, false, NULL, dummy_rotate); } EXPORT_SYMBOL(rb_insert_color);
void rb_erase(struct rb_node *node, struct rb_root *root) { struct rb_node *rebalance; - rebalance = __rb_erase_augmented(node, root, &dummy_callbacks); + rebalance = __rb_erase_augmented(node, root, + NULL, &dummy_callbacks); if (rebalance) ____rb_erase_color(rebalance, root, dummy_rotate); } EXPORT_SYMBOL(rb_erase);
+void rb_insert_color_cached(struct rb_node *node, + struct rb_root_cached *root, bool leftmost) +{ + __rb_insert(node, &root->rb_root, leftmost, + &root->rb_leftmost, dummy_rotate); +} +EXPORT_SYMBOL(rb_insert_color_cached); + +void rb_erase_cached(struct rb_node *node, struct rb_root_cached *root) +{ + struct rb_node *rebalance; + rebalance = __rb_erase_augmented(node, &root->rb_root, + &root->rb_leftmost, &dummy_callbacks); + if (rebalance) + ____rb_erase_color(rebalance, &root->rb_root, dummy_rotate); +} +EXPORT_SYMBOL(rb_erase_cached); + /* * Augmented rbtree manipulation functions. * @@ -438,9 +461,10 @@ EXPORT_SYMBOL(rb_erase); */
void __rb_insert_augmented(struct rb_node *node, struct rb_root *root, + bool newleft, struct rb_node **leftmost, void (*augment_rotate)(struct rb_node *old, struct rb_node *new)) { - __rb_insert(node, root, augment_rotate); + __rb_insert(node, root, newleft, leftmost, augment_rotate); } EXPORT_SYMBOL(__rb_insert_augmented);
@@ -485,7 +509,7 @@ struct rb_node *rb_next(const struct rb_node *node) * as we can. */ if (node->rb_right) { - node = node->rb_right; + node = node->rb_right; while (node->rb_left) node=node->rb_left; return (struct rb_node *)node; @@ -517,7 +541,7 @@ struct rb_node *rb_prev(const struct rb_node *node) * as we can. */ if (node->rb_left) { - node = node->rb_left; + node = node->rb_left; while (node->rb_right) node=node->rb_right; return (struct rb_node *)node; diff --git a/lib/timerqueue.c b/lib/timerqueue.c index 782ae8ca2c06..4f99b5c3ac0e 100644 --- a/lib/timerqueue.c +++ b/lib/timerqueue.c @@ -38,9 +38,10 @@ */ bool timerqueue_add(struct timerqueue_head *head, struct timerqueue_node *node) { - struct rb_node **p = &head->head.rb_node; + struct rb_node **p = &head->rb_root.rb_root.rb_node; struct rb_node *parent = NULL; - struct timerqueue_node *ptr; + struct timerqueue_node *ptr; + bool leftmost = true;
/* Make sure we don't add nodes that are already added */ WARN_ON_ONCE(!RB_EMPTY_NODE(&node->node)); @@ -48,19 +49,17 @@ bool timerqueue_add(struct timerqueue_head *head, struct timerqueue_node *node) while (*p) { parent = *p; ptr = rb_entry(parent, struct timerqueue_node, node); - if (node->expires.tv64 < ptr->expires.tv64) + if (node->expires.tv64 < ptr->expires.tv64) { p = &(*p)->rb_left; - else + } else { p = &(*p)->rb_right; + leftmost = false; + } } rb_link_node(&node->node, parent, p); - rb_insert_color(&node->node, &head->head); + rb_insert_color_cached(&node->node, &head->rb_root, leftmost);
- if (!head->next || node->expires.tv64 < head->next->expires.tv64) { - head->next = node; - return true; - } - return false; + return leftmost; } EXPORT_SYMBOL_GPL(timerqueue_add);
@@ -76,16 +75,10 @@ bool timerqueue_del(struct timerqueue_head *head, struct timerqueue_node *node) { WARN_ON_ONCE(RB_EMPTY_NODE(&node->node));
- /* update next pointer */ - if (head->next == node) { - struct rb_node *rbn = rb_next(&node->node); - - head->next = rbn ? - rb_entry(rbn, struct timerqueue_node, node) : NULL; - } - rb_erase(&node->node, &head->head); + rb_erase_cached(&node->node, &head->rb_root); RB_CLEAR_NODE(&node->node); - return head->next != NULL; + + return !RB_EMPTY_ROOT(&head->rb_root.rb_root); } EXPORT_SYMBOL_GPL(timerqueue_del);
diff --git a/mm/gup.c b/mm/gup.c index 301dd96ef176..0b80bf3878dc 100644 --- a/mm/gup.c +++ b/mm/gup.c @@ -1567,22 +1567,15 @@ int __get_user_pages_fast(unsigned long start, int nr_pages, int write, next = pgd_addr_end(addr, end); if (pgd_none(pgd)) break; - /* - * The FAST_GUP case requires FOLL_WRITE even for pure reads, - * because get_user_pages() may need to cause an early COW in - * order to avoid confusing the normal COW routines. So only - * targets that are already writable are safe to do by just - * looking at the page tables. - */ if (unlikely(pgd_huge(pgd))) { - if (!gup_huge_pgd(pgd, pgdp, addr, next, 1, + if (!gup_huge_pgd(pgd, pgdp, addr, next, write, pages, &nr)) break; } else if (unlikely(is_hugepd(__hugepd(pgd_val(pgd))))) { if (!gup_huge_pd(__hugepd(pgd_val(pgd)), addr, - PGDIR_SHIFT, next, 1, pages, &nr)) + PGDIR_SHIFT, next, write, pages, &nr)) break; - } else if (!gup_pud_range(pgd, addr, next, 1, pages, &nr)) + } else if (!gup_pud_range(pgd, addr, next, write, pages, &nr)) break; } while (pgdp++, addr = next, addr != end); local_irq_restore(flags); @@ -1612,7 +1605,14 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write, int nr, ret;
start &= PAGE_MASK; - nr = __get_user_pages_fast(start, nr_pages, write, pages); + /* + * The FAST_GUP case requires FOLL_WRITE even for pure reads, + * because get_user_pages() may need to cause an early COW in + * order to avoid confusing the normal COW routines. So only + * targets that are already writable are safe to do by just + * looking at the page tables. + */ + nr = __get_user_pages_fast(start, nr_pages, 1, pages); ret = nr;
if (nr < nr_pages) { diff --git a/mm/memory.c b/mm/memory.c index c2890dc104d9..2b2cc69ddcce 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -3780,8 +3780,8 @@ int __pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address) } #endif /* __PAGETABLE_PMD_FOLDED */
-static int __follow_pte(struct mm_struct *mm, unsigned long address, - pte_t **ptepp, spinlock_t **ptlp) +static int __follow_pte_pmd(struct mm_struct *mm, unsigned long address, + pte_t **ptepp, pmd_t **pmdpp, spinlock_t **ptlp) { pgd_t *pgd; pud_t *pud; @@ -3798,11 +3798,20 @@ static int __follow_pte(struct mm_struct *mm, unsigned long address,
pmd = pmd_offset(pud, address); VM_BUG_ON(pmd_trans_huge(*pmd)); - if (pmd_none(*pmd) || unlikely(pmd_bad(*pmd))) - goto out;
- /* We cannot handle huge page PFN maps. Luckily they don't exist. */ - if (pmd_huge(*pmd)) + if (pmd_huge(*pmd)) { + if (!pmdpp) + goto out; + + *ptlp = pmd_lock(mm, pmd); + if (pmd_huge(*pmd)) { + *pmdpp = pmd; + return 0; + } + spin_unlock(*ptlp); + } + + if (pmd_none(*pmd) || unlikely(pmd_bad(*pmd))) goto out;
ptep = pte_offset_map_lock(mm, pmd, address, ptlp); @@ -3825,9 +3834,23 @@ static inline int follow_pte(struct mm_struct *mm, unsigned long address,
/* (void) is needed to make gcc happy */ (void) __cond_lock(*ptlp, - !(res = __follow_pte(mm, address, ptepp, ptlp))); + !(res = __follow_pte_pmd(mm, address, ptepp, NULL, + ptlp))); + return res; +} + +int follow_pte_pmd(struct mm_struct *mm, unsigned long address, + pte_t **ptepp, pmd_t **pmdpp, spinlock_t **ptlp) +{ + int res; + + /* (void) is needed to make gcc happy */ + (void) __cond_lock(*ptlp, + !(res = __follow_pte_pmd(mm, address, ptepp, pmdpp, + ptlp))); return res; } +EXPORT_SYMBOL(follow_pte_pmd);
/** * follow_pfn - look up PFN at a user virtual address diff --git a/mm/shmem.c b/mm/shmem.c index 31b0c09fe6c6..51aa13f59622 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -436,7 +436,7 @@ static unsigned long shmem_unused_huge_shrink(struct shmem_sb_info *sbinfo, struct shmem_inode_info *info; struct page *page; unsigned long batch = sc ? sc->nr_to_scan : 128; - int removed = 0, split = 0; + int split = 0;
if (list_empty(&sbinfo->shrinklist)) return SHRINK_STOP; @@ -451,7 +451,6 @@ static unsigned long shmem_unused_huge_shrink(struct shmem_sb_info *sbinfo, /* inode is about to be evicted */ if (!inode) { list_del_init(&info->shrinklist); - removed++; goto next; }
@@ -459,12 +458,12 @@ static unsigned long shmem_unused_huge_shrink(struct shmem_sb_info *sbinfo, if (round_up(inode->i_size, PAGE_SIZE) == round_up(inode->i_size, HPAGE_PMD_SIZE)) { list_move(&info->shrinklist, &to_remove); - removed++; goto next; }
list_move(&info->shrinklist, &list); next: + sbinfo->shrinklist_len--; if (!--batch) break; } @@ -484,7 +483,7 @@ static unsigned long shmem_unused_huge_shrink(struct shmem_sb_info *sbinfo, inode = &info->vfs_inode;
if (nr_to_split && split >= nr_to_split) - goto leave; + goto move_back;
page = find_get_page(inode->i_mapping, (inode->i_size & HPAGE_PMD_MASK) >> PAGE_SHIFT); @@ -498,38 +497,44 @@ static unsigned long shmem_unused_huge_shrink(struct shmem_sb_info *sbinfo, }
/* - * Leave the inode on the list if we failed to lock - * the page at this time. + * Move the inode on the list back to shrinklist if we failed + * to lock the page at this time. * * Waiting for the lock may lead to deadlock in the * reclaim path. */ if (!trylock_page(page)) { put_page(page); - goto leave; + goto move_back; }
ret = split_huge_page(page); unlock_page(page); put_page(page);
- /* If split failed leave the inode on the list */ + /* If split failed move the inode on the list back to shrinklist */ if (ret) - goto leave; + goto move_back;
split++; drop: list_del_init(&info->shrinklist); - removed++; -leave: + goto put; +move_back: + /* + * Make sure the inode is either on the global list or deleted + * from any local list before iput() since it could be deleted + * in another thread once we put the inode (then the local list + * is corrupted). + */ + spin_lock(&sbinfo->shrinklist_lock); + list_move(&info->shrinklist, &sbinfo->shrinklist); + sbinfo->shrinklist_len++; + spin_unlock(&sbinfo->shrinklist_lock); +put: iput(inode); }
- spin_lock(&sbinfo->shrinklist_lock); - list_splice_tail(&list, &sbinfo->shrinklist); - sbinfo->shrinklist_len -= removed; - spin_unlock(&sbinfo->shrinklist_lock); - return split; }
diff --git a/net/bluetooth/cmtp/core.c b/net/bluetooth/cmtp/core.c index 0bb150e68c53..e2e580c747f4 100644 --- a/net/bluetooth/cmtp/core.c +++ b/net/bluetooth/cmtp/core.c @@ -499,9 +499,7 @@ static int __init cmtp_init(void) { BT_INFO("CMTP (CAPI Emulation) ver %s", VERSION);
- cmtp_init_sockets(); - - return 0; + return cmtp_init_sockets(); }
static void __exit cmtp_exit(void) diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index b43f31203a43..40e6e5feb1e0 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -3148,6 +3148,7 @@ int hci_register_dev(struct hci_dev *hdev) return id;
err_wqueue: + debugfs_remove_recursive(hdev->debugfs); destroy_workqueue(hdev->workqueue); destroy_workqueue(hdev->req_workqueue); err: diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index f9484755a9ba..17cfd9f8e98e 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -4967,7 +4967,8 @@ static void hci_le_adv_report_evt(struct hci_dev *hdev, struct sk_buff *skb) struct hci_ev_le_advertising_info *ev = ptr; s8 rssi;
- if (ev->length <= HCI_MAX_AD_LENGTH) { + if (ev->length <= HCI_MAX_AD_LENGTH && + ev->data + ev->length <= skb_tail_pointer(skb)) { rssi = ev->data[ev->length]; process_adv_report(hdev, ev->evt_type, &ev->bdaddr, ev->bdaddr_type, NULL, 0, rssi, @@ -4977,6 +4978,11 @@ static void hci_le_adv_report_evt(struct hci_dev *hdev, struct sk_buff *skb) }
ptr += sizeof(*ev) + ev->length + 1; + + if (ptr > (void *) skb_tail_pointer(skb) - sizeof(*ev)) { + bt_dev_err(hdev, "Malicious advertising data. Stopping processing"); + break; + } }
hci_dev_unlock(hdev); diff --git a/net/bridge/br_netfilter_hooks.c b/net/bridge/br_netfilter_hooks.c index 7104d5e64abb..11d4d18012fe 100644 --- a/net/bridge/br_netfilter_hooks.c +++ b/net/bridge/br_netfilter_hooks.c @@ -724,6 +724,9 @@ static int br_nf_dev_queue_xmit(struct net *net, struct sock *sk, struct sk_buff if (nf_bridge->frag_max_size && nf_bridge->frag_max_size < mtu) mtu = nf_bridge->frag_max_size;
+ nf_bridge_update_protocol(skb); + nf_bridge_push_encap_header(skb); + if (skb_is_gso(skb) || skb->len + mtu_reserved <= mtu) { nf_bridge_info_free(skb); return br_dev_queue_push_xmit(net, sk, skb); @@ -741,8 +744,6 @@ static int br_nf_dev_queue_xmit(struct net *net, struct sock *sk, struct sk_buff
IPCB(skb)->frag_max_size = nf_bridge->frag_max_size;
- nf_bridge_update_protocol(skb); - data = this_cpu_ptr(&brnf_frag_data_storage);
data->vlan_tci = skb->vlan_tci; @@ -765,8 +766,6 @@ static int br_nf_dev_queue_xmit(struct net *net, struct sock *sk, struct sk_buff
IP6CB(skb)->frag_max_size = nf_bridge->frag_max_size;
- nf_bridge_update_protocol(skb); - data = this_cpu_ptr(&brnf_frag_data_storage); data->encap_size = nf_bridge_encap_header_len(skb); data->size = ETH_HLEN + data->encap_size; diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c index 7630fa80db92..48854eae294f 100644 --- a/net/core/net_namespace.c +++ b/net/core/net_namespace.c @@ -132,8 +132,10 @@ static void ops_exit_list(const struct pernet_operations *ops, { struct net *net; if (ops->exit) { - list_for_each_entry(net, net_exit_list, exit_list) + list_for_each_entry(net, net_exit_list, exit_list) { ops->exit(net); + cond_resched(); + } } if (ops->exit_batch) ops->exit_batch(net_exit_list); diff --git a/net/ipv4/cipso_ipv4.c b/net/ipv4/cipso_ipv4.c index 553cda6f887a..b7dc20a65b64 100644 --- a/net/ipv4/cipso_ipv4.c +++ b/net/ipv4/cipso_ipv4.c @@ -534,16 +534,10 @@ int cipso_v4_doi_remove(u32 doi, struct netlbl_audit *audit_info) ret_val = -ENOENT; goto doi_remove_return; } - if (!atomic_dec_and_test(&doi_def->refcount)) { - spin_unlock(&cipso_v4_doi_list_lock); - ret_val = -EBUSY; - goto doi_remove_return; - } list_del_rcu(&doi_def->list); spin_unlock(&cipso_v4_doi_list_lock);
- cipso_v4_cache_invalidate(); - call_rcu(&doi_def->rcu, cipso_v4_doi_free_rcu); + cipso_v4_doi_putdef(doi_def); ret_val = 0;
doi_remove_return: @@ -600,9 +594,6 @@ void cipso_v4_doi_putdef(struct cipso_v4_doi *doi_def)
if (!atomic_dec_and_test(&doi_def->refcount)) return; - spin_lock(&cipso_v4_doi_list_lock); - list_del_rcu(&doi_def->list); - spin_unlock(&cipso_v4_doi_list_lock);
cipso_v4_cache_invalidate(); call_rcu(&doi_def->rcu, cipso_v4_doi_free_rcu); diff --git a/net/ipv6/calipso.c b/net/ipv6/calipso.c index b206415bbde7..7628963ddacc 100644 --- a/net/ipv6/calipso.c +++ b/net/ipv6/calipso.c @@ -97,6 +97,9 @@ struct calipso_map_cache_entry {
static struct calipso_map_cache_bkt *calipso_cache;
+static void calipso_cache_invalidate(void); +static void calipso_doi_putdef(struct calipso_doi *doi_def); + /* Label Mapping Cache Functions */
@@ -458,15 +461,10 @@ static int calipso_doi_remove(u32 doi, struct netlbl_audit *audit_info) ret_val = -ENOENT; goto doi_remove_return; } - if (!atomic_dec_and_test(&doi_def->refcount)) { - spin_unlock(&calipso_doi_list_lock); - ret_val = -EBUSY; - goto doi_remove_return; - } list_del_rcu(&doi_def->list); spin_unlock(&calipso_doi_list_lock);
- call_rcu(&doi_def->rcu, calipso_doi_free_rcu); + calipso_doi_putdef(doi_def); ret_val = 0;
doi_remove_return: @@ -522,10 +520,8 @@ static void calipso_doi_putdef(struct calipso_doi *doi_def)
if (!atomic_dec_and_test(&doi_def->refcount)) return; - spin_lock(&calipso_doi_list_lock); - list_del_rcu(&doi_def->list); - spin_unlock(&calipso_doi_list_lock);
+ calipso_cache_invalidate(); call_rcu(&doi_def->rcu, calipso_doi_free_rcu); }
diff --git a/net/netlabel/netlabel_cipso_v4.c b/net/netlabel/netlabel_cipso_v4.c index 422fac2a4a3c..9a256d0fb957 100644 --- a/net/netlabel/netlabel_cipso_v4.c +++ b/net/netlabel/netlabel_cipso_v4.c @@ -587,6 +587,7 @@ static int netlbl_cipsov4_list(struct sk_buff *skb, struct genl_info *info)
break; } + cipso_v4_doi_putdef(doi_def); rcu_read_unlock();
genlmsg_end(ans_skb, data); @@ -595,12 +596,14 @@ static int netlbl_cipsov4_list(struct sk_buff *skb, struct genl_info *info) list_retry: /* XXX - this limit is a guesstimate */ if (nlsze_mult < 4) { + cipso_v4_doi_putdef(doi_def); rcu_read_unlock(); kfree_skb(ans_skb); nlsze_mult *= 2; goto list_start; } list_failure_lock: + cipso_v4_doi_putdef(doi_def); rcu_read_unlock(); list_failure: kfree_skb(ans_skb); diff --git a/net/nfc/llcp_sock.c b/net/nfc/llcp_sock.c index 92c6fbfd51f7..bc59b2b5f983 100644 --- a/net/nfc/llcp_sock.c +++ b/net/nfc/llcp_sock.c @@ -796,6 +796,11 @@ static int llcp_sock_sendmsg(struct socket *sock, struct msghdr *msg,
lock_sock(sk);
+ if (!llcp_sock->local) { + release_sock(sk); + return -ENODEV; + } + if (sk->sk_type == SOCK_DGRAM) { DECLARE_SOCKADDR(struct sockaddr_nfc_llcp *, addr, msg->msg_name); diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c index 04ca08f85220..daa24ec7db27 100644 --- a/net/sched/sch_generic.c +++ b/net/sched/sch_generic.c @@ -996,6 +996,7 @@ void psched_ratecfg_precompute(struct psched_ratecfg *r, { memset(r, 0, sizeof(*r)); r->overhead = conf->overhead; + r->mpu = conf->mpu; r->rate_bytes_ps = max_t(u64, conf->rate, rate64); r->linklayer = (conf->linklayer & TC_LINKLAYER_MASK); r->mult = 1; diff --git a/net/unix/garbage.c b/net/unix/garbage.c index 8bbe1b8e4ff7..4d283e26d816 100644 --- a/net/unix/garbage.c +++ b/net/unix/garbage.c @@ -197,8 +197,11 @@ void wait_for_unix_gc(void) { /* If number of inflight sockets is insane, * force a garbage collect right now. + * Paired with the WRITE_ONCE() in unix_inflight(), + * unix_notinflight() and gc_in_progress(). */ - if (unix_tot_inflight > UNIX_INFLIGHT_TRIGGER_GC && !gc_in_progress) + if (READ_ONCE(unix_tot_inflight) > UNIX_INFLIGHT_TRIGGER_GC && + !READ_ONCE(gc_in_progress)) unix_gc(); wait_event(unix_gc_wait, gc_in_progress == false); } @@ -218,7 +221,9 @@ void unix_gc(void) if (gc_in_progress) goto out;
- gc_in_progress = true; + /* Paired with READ_ONCE() in wait_for_unix_gc(). */ + WRITE_ONCE(gc_in_progress, true); + /* First, select candidates for garbage collection. Only * in-flight sockets are considered, and from those only ones * which don't have any external reference. @@ -304,7 +309,10 @@ void unix_gc(void)
/* All candidates should have been detached by now. */ BUG_ON(!list_empty(&gc_candidates)); - gc_in_progress = false; + + /* Paired with READ_ONCE() in wait_for_unix_gc(). */ + WRITE_ONCE(gc_in_progress, false); + wake_up(&unix_gc_wait);
out: diff --git a/net/unix/scm.c b/net/unix/scm.c index df8f636ab1d8..bf1a8fa8c4f1 100644 --- a/net/unix/scm.c +++ b/net/unix/scm.c @@ -56,7 +56,8 @@ void unix_inflight(struct user_struct *user, struct file *fp) } else { BUG_ON(list_empty(&u->link)); } - unix_tot_inflight++; + /* Paired with READ_ONCE() in wait_for_unix_gc() */ + WRITE_ONCE(unix_tot_inflight, unix_tot_inflight + 1); } user->unix_inflight++; spin_unlock(&unix_gc_lock); @@ -76,7 +77,8 @@ void unix_notinflight(struct user_struct *user, struct file *fp)
if (atomic_long_dec_and_test(&u->inflight)) list_del_init(&u->link); - unix_tot_inflight--; + /* Paired with READ_ONCE() in wait_for_unix_gc() */ + WRITE_ONCE(unix_tot_inflight, unix_tot_inflight - 1); } user->unix_inflight--; spin_unlock(&unix_gc_lock); diff --git a/scripts/dtc/dtx_diff b/scripts/dtc/dtx_diff index ec47f95991a3..971e74f408a7 100755 --- a/scripts/dtc/dtx_diff +++ b/scripts/dtc/dtx_diff @@ -56,12 +56,8 @@ Otherwise DTx is treated as a dts source file (aka .dts). or '/include/' to be processed.
If DTx_1 and DTx_2 are in different architectures, then this script - may not work since ${ARCH} is part of the include path. Two possible - workarounds: - - `basename $0` \ - <(ARCH=arch_of_dtx_1 `basename $0` DTx_1) \ - <(ARCH=arch_of_dtx_2 `basename $0` DTx_2) + may not work since ${ARCH} is part of the include path. The following + workaround can be used:
`basename $0` ARCH=arch_of_dtx_1 DTx_1 >tmp_dtx_1.dts `basename $0` ARCH=arch_of_dtx_2 DTx_2 >tmp_dtx_2.dts diff --git a/sound/core/jack.c b/sound/core/jack.c index 5ddf81f091fa..36cfe1c54109 100644 --- a/sound/core/jack.c +++ b/sound/core/jack.c @@ -68,10 +68,13 @@ static int snd_jack_dev_free(struct snd_device *device) struct snd_card *card = device->card; struct snd_jack_kctl *jack_kctl, *tmp_jack_kctl;
+ down_write(&card->controls_rwsem); list_for_each_entry_safe(jack_kctl, tmp_jack_kctl, &jack->kctl_list, list) { list_del_init(&jack_kctl->list); snd_ctl_remove(card, jack_kctl->kctl); } + up_write(&card->controls_rwsem); + if (jack->private_free) jack->private_free(jack);
diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c index 0ce3f42721c4..440c16e0d071 100644 --- a/sound/core/oss/pcm_oss.c +++ b/sound/core/oss/pcm_oss.c @@ -2122,7 +2122,7 @@ static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file *pcm_oss_file, int tr int err, cmd;
#ifdef OSS_DEBUG - pcm_dbg(substream->pcm, "pcm_oss: trigger = 0x%x\n", trigger); + pr_debug("pcm_oss: trigger = 0x%x\n", trigger); #endif psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; diff --git a/sound/core/pcm.c b/sound/core/pcm.c index cdff5f976480..6ae28dcd7994 100644 --- a/sound/core/pcm.c +++ b/sound/core/pcm.c @@ -857,7 +857,11 @@ EXPORT_SYMBOL(snd_pcm_new_internal); static void free_chmap(struct snd_pcm_str *pstr) { if (pstr->chmap_kctl) { - snd_ctl_remove(pstr->pcm->card, pstr->chmap_kctl); + struct snd_card *card = pstr->pcm->card; + + down_write(&card->controls_rwsem); + snd_ctl_remove(card, pstr->chmap_kctl); + up_write(&card->controls_rwsem); pstr->chmap_kctl = NULL; } } diff --git a/sound/core/seq/seq_queue.c b/sound/core/seq/seq_queue.c index ea1aa0796276..b923059a2227 100644 --- a/sound/core/seq/seq_queue.c +++ b/sound/core/seq/seq_queue.c @@ -257,12 +257,15 @@ struct snd_seq_queue *snd_seq_queue_find_name(char *name)
/* -------------------------------------------------------- */
+#define MAX_CELL_PROCESSES_IN_QUEUE 1000 + void snd_seq_check_queue(struct snd_seq_queue *q, int atomic, int hop) { unsigned long flags; struct snd_seq_event_cell *cell; snd_seq_tick_time_t cur_tick; snd_seq_real_time_t cur_time; + int processed = 0;
if (q == NULL) return; @@ -285,6 +288,8 @@ void snd_seq_check_queue(struct snd_seq_queue *q, int atomic, int hop) if (!cell) break; snd_seq_dispatch_event(cell, atomic, hop); + if (++processed >= MAX_CELL_PROCESSES_IN_QUEUE) + goto out; /* the rest processed at the next batch */ }
/* Process time queue... */ @@ -294,14 +299,19 @@ void snd_seq_check_queue(struct snd_seq_queue *q, int atomic, int hop) if (!cell) break; snd_seq_dispatch_event(cell, atomic, hop); + if (++processed >= MAX_CELL_PROCESSES_IN_QUEUE) + goto out; /* the rest processed at the next batch */ }
+ out: /* free lock */ spin_lock_irqsave(&q->check_lock, flags); if (q->check_again) { q->check_again = 0; - spin_unlock_irqrestore(&q->check_lock, flags); - goto __again; + if (processed < MAX_CELL_PROCESSES_IN_QUEUE) { + spin_unlock_irqrestore(&q->check_lock, flags); + goto __again; + } } q->check_blocked = 0; spin_unlock_irqrestore(&q->check_lock, flags); diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 4e67614f15f8..8976da3e1e28 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -1608,8 +1608,11 @@ void snd_hda_ctls_clear(struct hda_codec *codec) { int i; struct hda_nid_item *items = codec->mixers.list; + + down_write(&codec->card->controls_rwsem); for (i = 0; i < codec->mixers.used; i++) snd_ctl_remove(codec->card, items[i].kctl); + up_write(&codec->card->controls_rwsem); snd_array_free(&codec->mixers); snd_array_free(&codec->nids); } diff --git a/sound/soc/mediatek/mt8173/mt8173-max98090.c b/sound/soc/mediatek/mt8173/mt8173-max98090.c index 5524a2c727ec..cab30cb48366 100644 --- a/sound/soc/mediatek/mt8173/mt8173-max98090.c +++ b/sound/soc/mediatek/mt8173/mt8173-max98090.c @@ -183,6 +183,9 @@ static int mt8173_max98090_dev_probe(struct platform_device *pdev) if (ret) dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n", __func__, ret); + + of_node_put(codec_node); + of_node_put(platform_node); return ret; }
diff --git a/sound/soc/mediatek/mt8173/mt8173-rt5650-rt5514.c b/sound/soc/mediatek/mt8173/mt8173-rt5650-rt5514.c index 467f7049a288..52fdd766ee82 100644 --- a/sound/soc/mediatek/mt8173/mt8173-rt5650-rt5514.c +++ b/sound/soc/mediatek/mt8173/mt8173-rt5650-rt5514.c @@ -228,6 +228,8 @@ static int mt8173_rt5650_rt5514_dev_probe(struct platform_device *pdev) if (ret) dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n", __func__, ret); + + of_node_put(platform_node); return ret; }
diff --git a/sound/soc/mediatek/mt8173/mt8173-rt5650-rt5676.c b/sound/soc/mediatek/mt8173/mt8173-rt5650-rt5676.c index 1b8b2a778845..5d75b04f074f 100644 --- a/sound/soc/mediatek/mt8173/mt8173-rt5650-rt5676.c +++ b/sound/soc/mediatek/mt8173/mt8173-rt5650-rt5676.c @@ -285,6 +285,8 @@ static int mt8173_rt5650_rt5676_dev_probe(struct platform_device *pdev) if (ret) dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n", __func__, ret); + + of_node_put(platform_node); return ret; }
diff --git a/sound/soc/mediatek/mt8173/mt8173-rt5650.c b/sound/soc/mediatek/mt8173/mt8173-rt5650.c index ba65f4157a7e..d02a90201b13 100644 --- a/sound/soc/mediatek/mt8173/mt8173-rt5650.c +++ b/sound/soc/mediatek/mt8173/mt8173-rt5650.c @@ -317,6 +317,8 @@ static int mt8173_rt5650_dev_probe(struct platform_device *pdev) if (ret) dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n", __func__, ret); + + of_node_put(platform_node); return ret; }
diff --git a/sound/soc/samsung/idma.c b/sound/soc/samsung/idma.c index 3e408158625d..72014dea7542 100644 --- a/sound/soc/samsung/idma.c +++ b/sound/soc/samsung/idma.c @@ -369,6 +369,8 @@ static int preallocate_idma_buffer(struct snd_pcm *pcm, int stream) buf->addr = idma.lp_tx_addr; buf->bytes = idma_hardware.buffer_bytes_max; buf->area = (unsigned char * __force)ioremap(buf->addr, buf->bytes); + if (!buf->area) + return -ENOMEM;
return 0; } diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index db859b595dba..d9b7001227e3 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -1513,15 +1513,24 @@ static bool vma_is_valid(struct vm_area_struct *vma, bool write_fault) return true; }
+static int kvm_try_get_pfn(kvm_pfn_t pfn) +{ + if (kvm_is_reserved_pfn(pfn)) + return 1; + return get_page_unless_zero(pfn_to_page(pfn)); +} + static int hva_to_pfn_remapped(struct vm_area_struct *vma, unsigned long addr, bool *async, bool write_fault, bool *writable, kvm_pfn_t *p_pfn) { - unsigned long pfn; + kvm_pfn_t pfn; + pte_t *ptep; + spinlock_t *ptl; int r;
- r = follow_pfn(vma, addr, &pfn); + r = follow_pte_pmd(vma->vm_mm, addr, &ptep, NULL, &ptl); if (r) { /* * get_user_pages fails for VM_IO and VM_PFNMAP vmas and does @@ -1536,14 +1545,19 @@ static int hva_to_pfn_remapped(struct vm_area_struct *vma, if (r) return r;
- r = follow_pfn(vma, addr, &pfn); + r = follow_pte_pmd(vma->vm_mm, addr, &ptep, NULL, &ptl); if (r) return r; + }
+ if (write_fault && !pte_write(*ptep)) { + pfn = KVM_PFN_ERR_RO_FAULT; + goto out; }
if (writable) - *writable = true; + *writable = pte_write(*ptep); + pfn = pte_pfn(*ptep);
/* * Get a reference here because callers of *hva_to_pfn* and @@ -1555,11 +1569,21 @@ static int hva_to_pfn_remapped(struct vm_area_struct *vma, * Whoever called remap_pfn_range is also going to call e.g. * unmap_mapping_range before the underlying pages are freed, * causing a call to our MMU notifier. + * + * Certain IO or PFNMAP mappings can be backed with valid + * struct pages, but be allocated without refcounting e.g., + * tail pages of non-compound higher order allocations, which + * would then underflow the refcount when the caller does the + * required put_page. Don't allow those pages here. */ - kvm_get_pfn(pfn); + if (!kvm_try_get_pfn(pfn)) + r = -EFAULT;
+out: + pte_unmap_unlock(ptep, ptl); *p_pfn = pfn; - return 0; + + return r; }
/*