From: Suganath Prabu suganath-prabu.subramani@broadcom.com

commit df9a606184bfdb5ae3ca9d226184e9489f5c24f7 upstream.

Although SAS3 & SAS3.5 IT HBA controllers support 64-bit DMA addressing, as per hardware design, if DMA-able range contains all 64-bits set (0xFFFFFFFF-FFFFFFFF) then it results in a firmware fault.

E.g. SGE's start address is 0xFFFFFFFF-FFFF000 and data length is 0x1000 bytes. when HBA tries to DMA the data at 0xFFFFFFFF-FFFFFFFF location then HBA will fault the firmware.

Driver will set 63-bit DMA mask to ensure the above address will not be used.

Cc: stable@vger.kernel.org # 5.1.20+ Signed-off-by: Suganath Prabu suganath-prabu.subramani@broadcom.com Reviewed-by: Christoph Hellwig hch@lst.de Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/scsi/mpt3sas/mpt3sas_base.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-)

--- a/drivers/scsi/mpt3sas/mpt3sas_base.c +++ b/drivers/scsi/mpt3sas/mpt3sas_base.c @@ -1724,9 +1724,11 @@ _base_config_dma_addressing(struct MPT3S { struct sysinfo s; u64 consistent_dma_mask; + /* Set 63 bit DMA mask for all SAS3 and SAS35 controllers */ + int dma_mask = (ioc->hba_mpi_version_belonged > MPI2_VERSION) ? 63 : 64;

if (ioc->dma_mask) - consistent_dma_mask = DMA_BIT_MASK(64); + consistent_dma_mask = DMA_BIT_MASK(dma_mask); else consistent_dma_mask = DMA_BIT_MASK(32);

@@ -1734,11 +1736,11 @@ _base_config_dma_addressing(struct MPT3S const uint64_t required_mask = dma_get_required_mask(&pdev->dev); if ((required_mask > DMA_BIT_MASK(32)) && - !pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) && + !pci_set_dma_mask(pdev, DMA_BIT_MASK(dma_mask)) && !pci_set_consistent_dma_mask(pdev, consistent_dma_mask)) { ioc->base_add_sg_single = &_base_add_sg_single_64; ioc->sge_size = sizeof(Mpi2SGESimple64_t); - ioc->dma_mask = 64; + ioc->dma_mask = dma_mask; goto out; } } @@ -1764,7 +1766,7 @@ static int _base_change_consistent_dma_mask(struct MPT3SAS_ADAPTER *ioc, struct pci_dev *pdev) { - if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) { + if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(ioc->dma_mask))) { if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) return -ENODEV; } @@ -3477,7 +3479,7 @@ _base_allocate_memory_pools(struct MPT3S total_sz += sz; } while (ioc->rdpq_array_enable && (++i < ioc->reply_queue_count));

- if (ioc->dma_mask == 64) { + if (ioc->dma_mask > 32) { if (_base_change_consistent_dma_mask(ioc, ioc->pdev) != 0) { pr_warn(MPT3SAS_FMT "no suitable consistent DMA mask for %s\n",

From: Isaac J. Manjarres isaacm@codeaurora.org

commit 951531691c4bcaa59f56a316e018bc2ff1ddf855 upstream.

Currently, when checking to see if accessing n bytes starting at address "ptr" will cause a wraparound in the memory addresses, the check in check_bogus_address() adds an extra byte, which is incorrect, as the range of addresses that will be accessed is [ptr, ptr + (n - 1)].

This can lead to incorrectly detecting a wraparound in the memory address, when trying to read 4 KB from memory that is mapped to the the last possible page in the virtual address space, when in fact, accessing that range of memory would not cause a wraparound to occur.

Use the memory range that will actually be accessed when considering if accessing a certain amount of bytes will cause the memory address to wrap around.

Link: http://lkml.kernel.org/r/1564509253-23287-1-git-send-email-isaacm@codeaurora... Fixes: f5509cc18daa ("mm: Hardened usercopy") Signed-off-by: Prasad Sodagudi psodagud@codeaurora.org Signed-off-by: Isaac J. Manjarres isaacm@codeaurora.org Co-developed-by: Prasad Sodagudi psodagud@codeaurora.org Reviewed-by: William Kucharski william.kucharski@oracle.com Acked-by: Kees Cook keescook@chromium.org Cc: Greg Kroah-Hartman gregkh@linuxfoundation.org Cc: Trilok Soni tsoni@codeaurora.org Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org [kees: backport to v4.14] Signed-off-by: Kees Cook keescook@chromium.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- mm/usercopy.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/usercopy.c +++ b/mm/usercopy.c @@ -121,7 +121,7 @@ static inline const char *check_kernel_t static inline const char *check_bogus_address(const void *ptr, unsigned long n) { /* Reject if object wraps past end of memory. */ - if ((unsigned long)ptr + n < (unsigned long)ptr) + if ((unsigned long)ptr + (n - 1) < (unsigned long)ptr) return "<wrapped address>";

/* Reject if NULL or ZERO-allocation. */

From: Daniel Borkmann daniel@iogearbox.net

commit fa9dd599b4dae841924b022768354cfde9affecb upstream.

Having a pure_initcall() callback just to permanently enable BPF JITs under CONFIG_BPF_JIT_ALWAYS_ON is unnecessary and could leave a small race window in future where JIT is still disabled on boot. Since we know about the setting at compilation time anyway, just initialize it properly there. Also consolidate all the individual bpf_jit_enable variables into a single one and move them under one location. Moreover, don't allow for setting unspecified garbage values on them.

Signed-off-by: Daniel Borkmann daniel@iogearbox.net Acked-by: Alexei Starovoitov ast@kernel.org Signed-off-by: Alexei Starovoitov ast@kernel.org [bwh: Backported to 4.14 as dependency of commit 2e4a30983b0f "bpf: restrict access to core bpf sysctls": - Adjust context] Signed-off-by: Ben Hutchings ben.hutchings@codethink.co.uk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/arm/net/bpf_jit_32.c | 2 -- arch/arm64/net/bpf_jit_comp.c | 2 -- arch/mips/net/bpf_jit.c | 2 -- arch/mips/net/ebpf_jit.c | 2 -- arch/powerpc/net/bpf_jit_comp.c | 2 -- arch/powerpc/net/bpf_jit_comp64.c | 2 -- arch/s390/net/bpf_jit_comp.c | 2 -- arch/sparc/net/bpf_jit_comp_32.c | 2 -- arch/sparc/net/bpf_jit_comp_64.c | 2 -- arch/x86/net/bpf_jit_comp.c | 2 -- kernel/bpf/core.c | 19 ++++++++++++------- net/core/sysctl_net_core.c | 18 ++++++++++++------ net/socket.c | 9 --------- 13 files changed, 24 insertions(+), 42 deletions(-)

--- a/arch/arm/net/bpf_jit_32.c +++ b/arch/arm/net/bpf_jit_32.c @@ -25,8 +25,6 @@

#include "bpf_jit_32.h"

-int bpf_jit_enable __read_mostly; - /* * eBPF prog stack layout: * --- a/arch/arm64/net/bpf_jit_comp.c +++ b/arch/arm64/net/bpf_jit_comp.c @@ -31,8 +31,6 @@

#include "bpf_jit.h"

-int bpf_jit_enable __read_mostly; - #define TMP_REG_1 (MAX_BPF_JIT_REG + 0) #define TMP_REG_2 (MAX_BPF_JIT_REG + 1) #define TCALL_CNT (MAX_BPF_JIT_REG + 2) --- a/arch/mips/net/bpf_jit.c +++ b/arch/mips/net/bpf_jit.c @@ -1207,8 +1207,6 @@ jmp_cmp: return 0; }

-int bpf_jit_enable __read_mostly; - void bpf_jit_compile(struct bpf_prog *fp) { struct jit_ctx ctx; --- a/arch/mips/net/ebpf_jit.c +++ b/arch/mips/net/ebpf_jit.c @@ -177,8 +177,6 @@ static u32 b_imm(unsigned int tgt, struc (ctx->idx * 4) - 4; }

-int bpf_jit_enable __read_mostly; - enum which_ebpf_reg { src_reg, src_reg_no_fp, --- a/arch/powerpc/net/bpf_jit_comp.c +++ b/arch/powerpc/net/bpf_jit_comp.c @@ -18,8 +18,6 @@

#include "bpf_jit32.h"

-int bpf_jit_enable __read_mostly; - static inline void bpf_flush_icache(void *start, void *end) { smp_wmb(); --- a/arch/powerpc/net/bpf_jit_comp64.c +++ b/arch/powerpc/net/bpf_jit_comp64.c @@ -21,8 +21,6 @@

#include "bpf_jit64.h"

-int bpf_jit_enable __read_mostly; - static void bpf_jit_fill_ill_insns(void *area, unsigned int size) { memset32(area, BREAKPOINT_INSTRUCTION, size/4); --- a/arch/s390/net/bpf_jit_comp.c +++ b/arch/s390/net/bpf_jit_comp.c @@ -30,8 +30,6 @@ #include <asm/set_memory.h> #include "bpf_jit.h"

-int bpf_jit_enable __read_mostly; - struct bpf_jit { u32 seen; /* Flags to remember seen eBPF instructions */ u32 seen_reg[16]; /* Array to remember which registers are used */ --- a/arch/sparc/net/bpf_jit_comp_32.c +++ b/arch/sparc/net/bpf_jit_comp_32.c @@ -11,8 +11,6 @@

#include "bpf_jit_32.h"

-int bpf_jit_enable __read_mostly; - static inline bool is_simm13(unsigned int value) { return value + 0x1000 < 0x2000; --- a/arch/sparc/net/bpf_jit_comp_64.c +++ b/arch/sparc/net/bpf_jit_comp_64.c @@ -12,8 +12,6 @@

#include "bpf_jit_64.h"

-int bpf_jit_enable __read_mostly; - static inline bool is_simm13(unsigned int value) { return value + 0x1000 < 0x2000; --- a/arch/x86/net/bpf_jit_comp.c +++ b/arch/x86/net/bpf_jit_comp.c @@ -16,8 +16,6 @@ #include <asm/nospec-branch.h> #include <linux/bpf.h>

-int bpf_jit_enable __read_mostly; - /* * assembly code in arch/x86/net/bpf_jit.S */ --- a/kernel/bpf/core.c +++ b/kernel/bpf/core.c @@ -290,6 +290,11 @@ struct bpf_prog *bpf_patch_insn_single(s }

#ifdef CONFIG_BPF_JIT +/* All BPF JIT sysctl knobs here. */ +int bpf_jit_enable __read_mostly = IS_BUILTIN(CONFIG_BPF_JIT_ALWAYS_ON); +int bpf_jit_harden __read_mostly; +int bpf_jit_kallsyms __read_mostly; + static __always_inline void bpf_get_prog_addr_region(const struct bpf_prog *prog, unsigned long *symbol_start, @@ -358,8 +363,6 @@ static DEFINE_SPINLOCK(bpf_lock); static LIST_HEAD(bpf_kallsyms); static struct latch_tree_root bpf_tree __cacheline_aligned;

-int bpf_jit_kallsyms __read_mostly; - static void bpf_prog_ksym_node_add(struct bpf_prog_aux *aux) { WARN_ON_ONCE(!list_empty(&aux->ksym_lnode)); @@ -540,8 +543,6 @@ void __weak bpf_jit_free(struct bpf_prog bpf_prog_unlock_free(fp); }

-int bpf_jit_harden __read_mostly; - static int bpf_jit_blind_insn(const struct bpf_insn *from, const struct bpf_insn *aux, struct bpf_insn *to_buff) @@ -1327,9 +1328,13 @@ EVAL4(PROG_NAME_LIST, 416, 448, 480, 512 };

#else -static unsigned int __bpf_prog_ret0(const void *ctx, - const struct bpf_insn *insn) +static unsigned int __bpf_prog_ret0_warn(const void *ctx, + const struct bpf_insn *insn) { + /* If this handler ever gets executed, then BPF_JIT_ALWAYS_ON + * is not working properly, so warn about it! + */ + WARN_ON_ONCE(1); return 0; } #endif @@ -1386,7 +1391,7 @@ struct bpf_prog *bpf_prog_select_runtime

fp->bpf_func = interpreters[(round_up(stack_depth, 32) / 32) - 1]; #else - fp->bpf_func = __bpf_prog_ret0; + fp->bpf_func = __bpf_prog_ret0_warn; #endif

/* eBPF JITs can rewrite the program in case constant --- a/net/core/sysctl_net_core.c +++ b/net/core/sysctl_net_core.c @@ -25,6 +25,7 @@

static int zero = 0; static int one = 1; +static int two __maybe_unused = 2; static int min_sndbuf = SOCK_MIN_SNDBUF; static int min_rcvbuf = SOCK_MIN_RCVBUF; static int max_skb_frags = MAX_SKB_FRAGS; @@ -325,13 +326,14 @@ static struct ctl_table net_core_table[] .data = &bpf_jit_enable, .maxlen = sizeof(int), .mode = 0644, -#ifndef CONFIG_BPF_JIT_ALWAYS_ON - .proc_handler = proc_dointvec -#else .proc_handler = proc_dointvec_minmax, +# ifdef CONFIG_BPF_JIT_ALWAYS_ON .extra1 = &one, .extra2 = &one, -#endif +# else + .extra1 = &zero, + .extra2 = &two, +# endif }, # ifdef CONFIG_HAVE_EBPF_JIT { @@ -339,14 +341,18 @@ static struct ctl_table net_core_table[] .data = &bpf_jit_harden, .maxlen = sizeof(int), .mode = 0600, - .proc_handler = proc_dointvec, + .proc_handler = proc_dointvec_minmax, + .extra1 = &zero, + .extra2 = &two, }, { .procname = "bpf_jit_kallsyms", .data = &bpf_jit_kallsyms, .maxlen = sizeof(int), .mode = 0600, - .proc_handler = proc_dointvec, + .proc_handler = proc_dointvec_minmax, + .extra1 = &zero, + .extra2 = &one, }, # endif #endif --- a/net/socket.c +++ b/net/socket.c @@ -2656,15 +2656,6 @@ out_fs:

core_initcall(sock_init); /* early initcall */

-static int __init jit_init(void) -{ -#ifdef CONFIG_BPF_JIT_ALWAYS_ON - bpf_jit_enable = 1; -#endif - return 0; -} -pure_initcall(jit_init); - #ifdef CONFIG_PROC_FS void socket_seq_show(struct seq_file *seq) {

From: Daniel Borkmann daniel@iogearbox.net

commit ede95a63b5e84ddeea6b0c473b36ab8bfd8c6ce3 upstream.

Rick reported that the BPF JIT could potentially fill the entire module space with BPF programs from unprivileged users which would prevent later attempts to load normal kernel modules or privileged BPF programs, for example. If JIT was enabled but unsuccessful to generate the image, then before commit 290af86629b2 ("bpf: introduce BPF_JIT_ALWAYS_ON config") we would always fall back to the BPF interpreter. Nowadays in the case where the CONFIG_BPF_JIT_ALWAYS_ON could be set, then the load will abort with a failure since the BPF interpreter was compiled out.

Add a global limit and enforce it for unprivileged users such that in case of BPF interpreter compiled out we fail once the limit has been reached or we fall back to BPF interpreter earlier w/o using module mem if latter was compiled in. In a next step, fair share among unprivileged users can be resolved in particular for the case where we would fail hard once limit is reached.

Fixes: 290af86629b2 ("bpf: introduce BPF_JIT_ALWAYS_ON config") Fixes: 0a14842f5a3c ("net: filter: Just In Time compiler for x86-64") Co-Developed-by: Rick Edgecombe rick.p.edgecombe@intel.com Signed-off-by: Daniel Borkmann daniel@iogearbox.net Acked-by: Alexei Starovoitov ast@kernel.org Cc: Eric Dumazet eric.dumazet@gmail.com Cc: Jann Horn jannh@google.com Cc: Kees Cook keescook@chromium.org Cc: LKML linux-kernel@vger.kernel.org Signed-off-by: Alexei Starovoitov ast@kernel.org Signed-off-by: Ben Hutchings ben.hutchings@codethink.co.uk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- Documentation/sysctl/net.txt | 8 +++++++ include/linux/filter.h | 1 kernel/bpf/core.c | 49 ++++++++++++++++++++++++++++++++++++++++--- net/core/sysctl_net_core.c | 10 +++++++- 4 files changed, 63 insertions(+), 5 deletions(-)

--- a/Documentation/sysctl/net.txt +++ b/Documentation/sysctl/net.txt @@ -91,6 +91,14 @@ Values : 0 - disable JIT kallsyms export (default value) 1 - enable JIT kallsyms export for privileged users only

+bpf_jit_limit +------------- + +This enforces a global limit for memory allocations to the BPF JIT +compiler in order to reject unprivileged JIT requests once it has +been surpassed. bpf_jit_limit contains the value of the global limit +in bytes. + dev_weight --------------

--- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -729,6 +729,7 @@ struct sock *do_sk_redirect_map(struct s extern int bpf_jit_enable; extern int bpf_jit_harden; extern int bpf_jit_kallsyms; +extern int bpf_jit_limit;

typedef void (*bpf_jit_fill_hole_t)(void *area, unsigned int size);

--- a/kernel/bpf/core.c +++ b/kernel/bpf/core.c @@ -290,10 +290,13 @@ struct bpf_prog *bpf_patch_insn_single(s }

#ifdef CONFIG_BPF_JIT +# define BPF_JIT_LIMIT_DEFAULT (PAGE_SIZE * 40000) + /* All BPF JIT sysctl knobs here. */ int bpf_jit_enable __read_mostly = IS_BUILTIN(CONFIG_BPF_JIT_ALWAYS_ON); int bpf_jit_harden __read_mostly; int bpf_jit_kallsyms __read_mostly; +int bpf_jit_limit __read_mostly = BPF_JIT_LIMIT_DEFAULT;

static __always_inline void bpf_get_prog_addr_region(const struct bpf_prog *prog, @@ -489,27 +492,64 @@ int bpf_get_kallsym(unsigned int symnum, return ret; }

+static atomic_long_t bpf_jit_current; + +#if defined(MODULES_VADDR) +static int __init bpf_jit_charge_init(void) +{ + /* Only used as heuristic here to derive limit. */ + bpf_jit_limit = min_t(u64, round_up((MODULES_END - MODULES_VADDR) >> 2, + PAGE_SIZE), INT_MAX); + return 0; +} +pure_initcall(bpf_jit_charge_init); +#endif + +static int bpf_jit_charge_modmem(u32 pages) +{ + if (atomic_long_add_return(pages, &bpf_jit_current) > + (bpf_jit_limit >> PAGE_SHIFT)) { + if (!capable(CAP_SYS_ADMIN)) { + atomic_long_sub(pages, &bpf_jit_current); + return -EPERM; + } + } + + return 0; +} + +static void bpf_jit_uncharge_modmem(u32 pages) +{ + atomic_long_sub(pages, &bpf_jit_current); +} + struct bpf_binary_header * bpf_jit_binary_alloc(unsigned int proglen, u8 **image_ptr, unsigned int alignment, bpf_jit_fill_hole_t bpf_fill_ill_insns) { struct bpf_binary_header *hdr; - unsigned int size, hole, start; + u32 size, hole, start, pages;

/* Most of BPF filters are really small, but if some of them * fill a page, allow at least 128 extra bytes to insert a * random section of illegal instructions. */ size = round_up(proglen + sizeof(*hdr) + 128, PAGE_SIZE); + pages = size / PAGE_SIZE; + + if (bpf_jit_charge_modmem(pages)) + return NULL; hdr = module_alloc(size); - if (hdr == NULL) + if (!hdr) { + bpf_jit_uncharge_modmem(pages); return NULL; + }

/* Fill space with illegal/arch-dep instructions. */ bpf_fill_ill_insns(hdr, size);

- hdr->pages = size / PAGE_SIZE; + hdr->pages = pages; hole = min_t(unsigned int, size - (proglen + sizeof(*hdr)), PAGE_SIZE - sizeof(*hdr)); start = (get_random_int() % hole) & ~(alignment - 1); @@ -522,7 +562,10 @@ bpf_jit_binary_alloc(unsigned int progle

void bpf_jit_binary_free(struct bpf_binary_header *hdr) { + u32 pages = hdr->pages; + module_memfree(hdr); + bpf_jit_uncharge_modmem(pages); }

/* This symbol is only overridden by archs that have different --- a/net/core/sysctl_net_core.c +++ b/net/core/sysctl_net_core.c @@ -272,7 +272,6 @@ static int proc_dointvec_minmax_bpf_enab return ret; }

-# ifdef CONFIG_HAVE_EBPF_JIT static int proc_dointvec_minmax_bpf_restricted(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, @@ -283,7 +282,6 @@ proc_dointvec_minmax_bpf_restricted(stru

return proc_dointvec_minmax(table, write, buffer, lenp, ppos); } -# endif #endif

static struct ctl_table net_core_table[] = { @@ -390,6 +388,14 @@ static struct ctl_table net_core_table[] .extra2 = &one, }, # endif + { + .procname = "bpf_jit_limit", + .data = &bpf_jit_limit, + .maxlen = sizeof(int), + .mode = 0600, + .proc_handler = proc_dointvec_minmax_bpf_restricted, + .extra1 = &one, + }, #endif { .procname = "netdev_tstamp_prequeue",

From: Max Filippov jcmvbkbc@gmail.com

commit cd8869f4cb257f22b89495ca40f5281e58ba359c upstream.

ITLB entry modifications must be followed by the isync instruction before the new entries are possibly used. cpu_reset lacks one isync between ITLB way 6 initialization and jump to the identity mapping. Add missing isync to xtensa cpu_reset.

Cc: stable@vger.kernel.org Signed-off-by: Max Filippov jcmvbkbc@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- arch/xtensa/kernel/setup.c | 1 + 1 file changed, 1 insertion(+)

--- a/arch/xtensa/kernel/setup.c +++ b/arch/xtensa/kernel/setup.c @@ -508,6 +508,7 @@ void cpu_reset(void) "add %2, %2, %7\n\t" "addi %0, %0, -1\n\t" "bnez %0, 1b\n\t" + "isync\n\t" /* Jump to identity mapping */ "jx %3\n" "2:\n\t"

From: Wenwen Wang wenwen@cs.uga.edu

commit cfef67f016e4c00a2f423256fc678a6967a9fc09 upstream.

In snd_hda_parse_generic_codec(), 'spec' is allocated through kzalloc(). Then, the pin widgets in 'codec' are parsed. However, if the parsing process fails, 'spec' is not deallocated, leading to a memory leak.

To fix the above issue, free 'spec' before returning the error.

Fixes: 352f7f914ebb ("ALSA: hda - Merge Realtek parser code to generic parser") Signed-off-by: Wenwen Wang wenwen@cs.uga.edu Cc: stable@vger.kernel.org Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- sound/pci/hda/hda_generic.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/sound/pci/hda/hda_generic.c +++ b/sound/pci/hda/hda_generic.c @@ -5945,7 +5945,7 @@ static int snd_hda_parse_generic_codec(s

err = snd_hda_parse_pin_defcfg(codec, &spec->autocfg, NULL, 0); if (err < 0) - return err; + goto error;

err = snd_hda_gen_parse_auto_config(codec, &spec->autocfg); if (err < 0)

From: Hui Wang hui.wang@canonical.com

commit 401714d9534aad8c24196b32600da683116bbe09 upstream.

We have 3 new lenovo laptops which have conexant codec 0x14f11f86, these 3 laptops also have the noise issue when rebooting, after letting the codec enter D3 before rebooting or poweroff, the noise disappers.

Instead of adding a new ID again in the reboot_notify(), let us make this function apply to all conexant codec. In theory make codec enter D3 before rebooting or poweroff is harmless, and I tested this change on a couple of other Lenovo laptops which have different conexant codecs, there is no side effect so far.

Cc: stable@vger.kernel.org Signed-off-by: Hui Wang hui.wang@canonical.com Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- sound/pci/hda/patch_conexant.c | 9 --------- 1 file changed, 9 deletions(-)

--- a/sound/pci/hda/patch_conexant.c +++ b/sound/pci/hda/patch_conexant.c @@ -210,15 +210,6 @@ static void cx_auto_reboot_notify(struct { struct conexant_spec *spec = codec->spec;

- switch (codec->core.vendor_id) { - case 0x14f12008: /* CX8200 */ - case 0x14f150f2: /* CX20722 */ - case 0x14f150f4: /* CX20724 */ - break; - default: - return; - } - /* Turn the problematic codec into D3 to avoid spurious noises from the internal speaker during (and after) reboot */ cx_auto_turn_eapd(codec, spec->num_eapds, spec->eapds, false);

From: Hillf Danton hdanton@sina.com

commit 9c09b214f30e3c11f9b0b03f89442df03643794d upstream.

syzbot found the following crash on:

HEAD commit: e96407b4 usb-fuzzer: main usb gadget fuzzer driver git tree: https://github.com/google/kasan.git usb-fuzzer console output: https://syzkaller.appspot.com/x/log.txt?x=147ac20c600000 kernel config: https://syzkaller.appspot.com/x/.config?x=792eb47789f57810 dashboard link: https://syzkaller.appspot.com/bug?extid=62a1e04fd3ec2abf099e compiler: gcc (GCC) 9.0.0 20181231 (experimental)

================================================================== BUG: KASAN: use-after-free in __lock_acquire+0x302a/0x3b50 kernel/locking/lockdep.c:3753 Read of size 8 at addr ffff8881cf591a08 by task syz-executor.1/26260

CPU: 1 PID: 26260 Comm: syz-executor.1 Not tainted 5.3.0-rc2+ #24 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xca/0x13e lib/dump_stack.c:113 print_address_description+0x6a/0x32c mm/kasan/report.c:351 __kasan_report.cold+0x1a/0x33 mm/kasan/report.c:482 kasan_report+0xe/0x12 mm/kasan/common.c:612 __lock_acquire+0x302a/0x3b50 kernel/locking/lockdep.c:3753 lock_acquire+0x127/0x320 kernel/locking/lockdep.c:4412 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x32/0x50 kernel/locking/spinlock.c:159 hiddev_release+0x82/0x520 drivers/hid/usbhid/hiddev.c:221 __fput+0x2d7/0x840 fs/file_table.c:280 task_work_run+0x13f/0x1c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x8ef/0x2c50 kernel/exit.c:878 do_group_exit+0x125/0x340 kernel/exit.c:982 get_signal+0x466/0x23d0 kernel/signal.c:2728 do_signal+0x88/0x14e0 arch/x86/kernel/signal.c:815 exit_to_usermode_loop+0x1a2/0x200 arch/x86/entry/common.c:159 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x45f/0x580 arch/x86/entry/common.c:299 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459829 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f75b2a6ccf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000075c078 RCX: 0000000000459829 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000075c078 RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000075c07c R13: 00007ffcdfe1023f R14: 00007f75b2a6d9c0 R15: 000000000075c07c

Allocated by task 104: save_stack+0x1b/0x80 mm/kasan/common.c:69 set_track mm/kasan/common.c:77 [inline] __kasan_kmalloc mm/kasan/common.c:487 [inline] __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:460 kmalloc include/linux/slab.h:552 [inline] kzalloc include/linux/slab.h:748 [inline] hiddev_connect+0x242/0x5b0 drivers/hid/usbhid/hiddev.c:900 hid_connect+0x239/0xbb0 drivers/hid/hid-core.c:1882 hid_hw_start drivers/hid/hid-core.c:1981 [inline] hid_hw_start+0xa2/0x130 drivers/hid/hid-core.c:1972 appleir_probe+0x13e/0x1a0 drivers/hid/hid-appleir.c:308 hid_device_probe+0x2be/0x3f0 drivers/hid/hid-core.c:2209 really_probe+0x281/0x650 drivers/base/dd.c:548 driver_probe_device+0x101/0x1b0 drivers/base/dd.c:709 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:816 bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454 __device_attach+0x217/0x360 drivers/base/dd.c:882 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514 device_add+0xae6/0x16f0 drivers/base/core.c:2114 hid_add_device+0x33c/0x990 drivers/hid/hid-core.c:2365 usbhid_probe+0xa81/0xfa0 drivers/hid/usbhid/hid-core.c:1386 usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361 really_probe+0x281/0x650 drivers/base/dd.c:548 driver_probe_device+0x101/0x1b0 drivers/base/dd.c:709 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:816 bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454 __device_attach+0x217/0x360 drivers/base/dd.c:882 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514 device_add+0xae6/0x16f0 drivers/base/core.c:2114 usb_set_configuration+0xdf6/0x1670 drivers/usb/core/message.c:2023 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210 usb_probe_device+0x99/0x100 drivers/usb/core/driver.c:266 really_probe+0x281/0x650 drivers/base/dd.c:548 driver_probe_device+0x101/0x1b0 drivers/base/dd.c:709 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:816 bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454 __device_attach+0x217/0x360 drivers/base/dd.c:882 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514 device_add+0xae6/0x16f0 drivers/base/core.c:2114 usb_new_device.cold+0x6a4/0xe79 drivers/usb/core/hub.c:2536 hub_port_connect drivers/usb/core/hub.c:5098 [inline] hub_port_connect_change drivers/usb/core/hub.c:5213 [inline] port_event drivers/usb/core/hub.c:5359 [inline] hub_event+0x1b5c/0x3640 drivers/usb/core/hub.c:5441 process_one_work+0x92b/0x1530 kernel/workqueue.c:2269 worker_thread+0x96/0xe20 kernel/workqueue.c:2415 kthread+0x318/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352

Freed by task 104: save_stack+0x1b/0x80 mm/kasan/common.c:69 set_track mm/kasan/common.c:77 [inline] __kasan_slab_free+0x130/0x180 mm/kasan/common.c:449 slab_free_hook mm/slub.c:1423 [inline] slab_free_freelist_hook mm/slub.c:1470 [inline] slab_free mm/slub.c:3012 [inline] kfree+0xe4/0x2f0 mm/slub.c:3953 hiddev_connect.cold+0x45/0x5c drivers/hid/usbhid/hiddev.c:914 hid_connect+0x239/0xbb0 drivers/hid/hid-core.c:1882 hid_hw_start drivers/hid/hid-core.c:1981 [inline] hid_hw_start+0xa2/0x130 drivers/hid/hid-core.c:1972 appleir_probe+0x13e/0x1a0 drivers/hid/hid-appleir.c:308 hid_device_probe+0x2be/0x3f0 drivers/hid/hid-core.c:2209 really_probe+0x281/0x650 drivers/base/dd.c:548 driver_probe_device+0x101/0x1b0 drivers/base/dd.c:709 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:816 bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454 __device_attach+0x217/0x360 drivers/base/dd.c:882 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514 device_add+0xae6/0x16f0 drivers/base/core.c:2114 hid_add_device+0x33c/0x990 drivers/hid/hid-core.c:2365 usbhid_probe+0xa81/0xfa0 drivers/hid/usbhid/hid-core.c:1386 usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361 really_probe+0x281/0x650 drivers/base/dd.c:548 driver_probe_device+0x101/0x1b0 drivers/base/dd.c:709 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:816 bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454 __device_attach+0x217/0x360 drivers/base/dd.c:882 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514 device_add+0xae6/0x16f0 drivers/base/core.c:2114 usb_set_configuration+0xdf6/0x1670 drivers/usb/core/message.c:2023 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210 usb_probe_device+0x99/0x100 drivers/usb/core/driver.c:266 really_probe+0x281/0x650 drivers/base/dd.c:548 driver_probe_device+0x101/0x1b0 drivers/base/dd.c:709 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:816 bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454 __device_attach+0x217/0x360 drivers/base/dd.c:882 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514 device_add+0xae6/0x16f0 drivers/base/core.c:2114 usb_new_device.cold+0x6a4/0xe79 drivers/usb/core/hub.c:2536 hub_port_connect drivers/usb/core/hub.c:5098 [inline] hub_port_connect_change drivers/usb/core/hub.c:5213 [inline] port_event drivers/usb/core/hub.c:5359 [inline] hub_event+0x1b5c/0x3640 drivers/usb/core/hub.c:5441 process_one_work+0x92b/0x1530 kernel/workqueue.c:2269 worker_thread+0x96/0xe20 kernel/workqueue.c:2415 kthread+0x318/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352

The buggy address belongs to the object at ffff8881cf591900 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 264 bytes inside of 512-byte region [ffff8881cf591900, ffff8881cf591b00) The buggy address belongs to the page: page:ffffea00073d6400 refcount:1 mapcount:0 mapping:ffff8881da002500 index:0x0 compound_mapcount: 0 flags: 0x200000000010200(slab|head) raw: 0200000000010200 0000000000000000 0000000100000001 ffff8881da002500 raw: 0000000000000000 00000000000c000c 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected

Memory state around the buggy address: ffff8881cf591900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881cf591980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb

ffff8881cf591a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb

^ ffff8881cf591a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881cf591b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================

In order to avoid opening a disconnected device, we need to check exist again after acquiring the existance lock, and bail out if necessary.

Reported-by: syzbot syzbot+62a1e04fd3ec2abf099e@syzkaller.appspotmail.com Cc: Andrey Konovalov andreyknvl@google.com Signed-off-by: Hillf Danton hdanton@sina.com Signed-off-by: Jiri Kosina jkosina@suse.cz Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/hid/usbhid/hiddev.c | 8 ++++++++ 1 file changed, 8 insertions(+)

--- a/drivers/hid/usbhid/hiddev.c +++ b/drivers/hid/usbhid/hiddev.c @@ -297,6 +297,14 @@ static int hiddev_open(struct inode *ino spin_unlock_irq(&list->hiddev->list_lock);

mutex_lock(&hiddev->existancelock); + /* + * recheck exist with existance lock held to + * avoid opening a disconnected device + */ + if (!list->hiddev->exist) { + res = -ENODEV; + goto bail_unlock; + } if (!list->hiddev->open++) if (list->hiddev->exist) { struct hid_device *hid = hiddev->hid;

From: Oliver Neukum oneukum@suse.com

commit c88090dfc84254fa149174eb3e6a8458de1912c4 upstream.

The driver should check whether the endpoint it uses has the correct type.

Reported-by: syzbot+c7df50363aaff50aa363@syzkaller.appspotmail.com Signed-off-by: Oliver Neukum oneukum@suse.com Signed-off-by: Dmitry Torokhov dmitry.torokhov@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/input/tablet/kbtab.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/drivers/input/tablet/kbtab.c +++ b/drivers/input/tablet/kbtab.c @@ -125,6 +125,10 @@ static int kbtab_probe(struct usb_interf if (intf->cur_altsetting->desc.bNumEndpoints < 1) return -ENODEV;

+ endpoint = &intf->cur_altsetting->endpoint[0].desc; + if (!usb_endpoint_is_int_in(endpoint)) + return -ENODEV; + kbtab = kzalloc(sizeof(struct kbtab), GFP_KERNEL); input_dev = input_allocate_device(); if (!kbtab || !input_dev) @@ -163,8 +167,6 @@ static int kbtab_probe(struct usb_interf input_set_abs_params(input_dev, ABS_Y, 0, 0x1750, 4, 0); input_set_abs_params(input_dev, ABS_PRESSURE, 0, 0xff, 0, 0);

- endpoint = &intf->cur_altsetting->endpoint[0].desc; - usb_fill_int_urb(kbtab->irq, dev, usb_rcvintpipe(dev, endpoint->bEndpointAddress), kbtab->data, 8,

From: Denis Kirjanov kda@linux-powerpc.org

commit 224c04973db1125fcebefffd86115f99f50f8277 upstream.

get_registers() may fail with -ENOMEM and in this case we can read a garbage from the status variable tmp.

Reported-by: syzbot+3499a83b2d062ae409d4@syzkaller.appspotmail.com Signed-off-by: Denis Kirjanov kda@linux-powerpc.org Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/net/usb/pegasus.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/usb/pegasus.c +++ b/drivers/net/usb/pegasus.c @@ -285,7 +285,7 @@ static void mdio_write(struct net_device static int read_eprom_word(pegasus_t *pegasus, __u8 index, __u16 *retdata) { int i; - __u8 tmp; + __u8 tmp = 0; __le16 retdatai; int ret;

[ Upstream commit 1573eebeaa8055777eb753f9b4d1cbe653380c38 ]

In clk_generated_determine_rate(), if the divisor is greater than GENERATED_MAX_DIV + 1, then the wrong best_rate will be returned. If clk_generated_set_rate() will be called later with this wrong rate, it will return -EINVAL, so the generated clock won't change its value. Do no let the divisor be greater than GENERATED_MAX_DIV + 1.

Fixes: 8c7aa6328947 ("clk: at91: clk-generated: remove useless divisor loop") Signed-off-by: Codrin Ciubotariu codrin.ciubotariu@microchip.com Acked-by: Nicolas Ferre nicolas.ferre@microchip.com Acked-by: Ludovic Desroches ludovic.desroches@microchip.com Signed-off-by: Stephen Boyd sboyd@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/clk/at91/clk-generated.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/drivers/clk/at91/clk-generated.c b/drivers/clk/at91/clk-generated.c index 33481368740e7..113152425a95d 100644 --- a/drivers/clk/at91/clk-generated.c +++ b/drivers/clk/at91/clk-generated.c @@ -153,6 +153,8 @@ static int clk_generated_determine_rate(struct clk_hw *hw, continue;

div = DIV_ROUND_CLOSEST(parent_rate, req->rate); + if (div > GENERATED_MAX_DIV + 1) + div = GENERATED_MAX_DIV + 1;

clk_generated_best_diff(req, parent, parent_rate, div, &best_diff, &best_rate);

[ Upstream commit 09e088a4903bd0dd911b4f1732b250130cdaffed ]

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/xen/xen-pciback/conf_space_capability.c: In function pm_ctrl_write: drivers/xen/xen-pciback/conf_space_capability.c:119:25: warning: variable old_state set but not used [-Wunused-but-set-variable]

It is never used so can be removed.

Reported-by: Hulk Robot hulkci@huawei.com Signed-off-by: YueHaibing yuehaibing@huawei.com Reviewed-by: Boris Ostrovsky boris.ostrovsky@oracle.com Signed-off-by: Juergen Gross jgross@suse.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/xen/xen-pciback/conf_space_capability.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/xen/xen-pciback/conf_space_capability.c b/drivers/xen/xen-pciback/conf_space_capability.c index 73427d8e01161..e5694133ebe57 100644 --- a/drivers/xen/xen-pciback/conf_space_capability.c +++ b/drivers/xen/xen-pciback/conf_space_capability.c @@ -116,13 +116,12 @@ static int pm_ctrl_write(struct pci_dev *dev, int offset, u16 new_value, { int err; u16 old_value; - pci_power_t new_state, old_state; + pci_power_t new_state;

err = pci_read_config_word(dev, offset, &old_value); if (err) goto out;

- old_state = (pci_power_t)(old_value & PCI_PM_CTRL_STATE_MASK); new_state = (pci_power_t)(new_value & PCI_PM_CTRL_STATE_MASK);

new_value &= PM_OK_BITS;

[ Upstream commit 9a446ef08f3bfc0c3deb9c6be840af2528ef8cf8 ]

The GPCv2 is a stacked IRQ controller below the ARM GIC. It doesn't care about the IRQ type itself, but needs to forward the type to the parent IRQ controller, so this one can be configured correctly.

Signed-off-by: Lucas Stach l.stach@pengutronix.de Signed-off-by: Marc Zyngier maz@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/irqchip/irq-imx-gpcv2.c | 1 + 1 file changed, 1 insertion(+)

diff --git a/drivers/irqchip/irq-imx-gpcv2.c b/drivers/irqchip/irq-imx-gpcv2.c index 675eda5ff2b85..e4831491a3c49 100644 --- a/drivers/irqchip/irq-imx-gpcv2.c +++ b/drivers/irqchip/irq-imx-gpcv2.c @@ -145,6 +145,7 @@ static struct irq_chip gpcv2_irqchip_data_chip = { .irq_unmask = imx_gpcv2_irq_unmask, .irq_set_wake = imx_gpcv2_irq_set_wake, .irq_retrigger = irq_chip_retrigger_hierarchy, + .irq_set_type = irq_chip_set_type_parent, #ifdef CONFIG_SMP .irq_set_affinity = irq_chip_set_affinity_parent, #endif

[ Upstream commit 20f9781f491360e7459c589705a2e4b1f136bee9 ]

When building our local version of perf with MSAN (Memory Sanitizer) and running the perf record command, MSAN throws a use of uninitialized value warning in "tools/perf/util/util.c:333:6".

This warning stems from the "buf" variable being passed into "write". It originated as the variable "ev" with the type union perf_event* defined in the "perf_event__synthesize_attr" function in "tools/perf/util/header.c".

In the "perf_event__synthesize_attr" function they allocate space with a malloc call using ev, then go on to only assign some of the member variables before passing "ev" on as a parameter to the "process" function therefore "ev" contains uninitialized memory. Changing the malloc call to zalloc to initialize all the members of "ev" which gets rid of the warning.

To reproduce this warning, build perf by running: make -C tools/perf CLANG=1 CC=clang EXTRA_CFLAGS="-fsanitize=memory\ -fsanitize-memory-track-origins"

(Additionally, llvm might have to be installed and clang might have to be specified as the compiler - export CC=/usr/bin/clang)

then running: tools/perf/perf record -o - ls / | tools/perf/perf --no-pager annotate\ -i - --stdio

Please see the cover letter for why false positive warnings may be generated.

Signed-off-by: Numfor Mbiziwo-Tiapo nums@google.com Cc: Alexander Shishkin alexander.shishkin@linux.intel.com Cc: Ian Rogers irogers@google.com Cc: Jiri Olsa jolsa@redhat.com Cc: Mark Drayton mbd@fb.com Cc: Namhyung Kim namhyung@kernel.org Cc: Peter Zijlstra peterz@infradead.org Cc: Song Liu songliubraving@fb.com Cc: Stephane Eranian eranian@google.com Link: http://lkml.kernel.org/r/20190724234500.253358-2-nums@google.com Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- tools/perf/util/header.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index baec3e9833256..f03ba775f8be6 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -2990,7 +2990,7 @@ int perf_event__synthesize_attr(struct perf_tool *tool, size += sizeof(struct perf_event_header); size += ids * sizeof(u64);

- ev = malloc(size); + ev = zalloc(size);

if (ev == NULL) return -ENOMEM;

[ Upstream commit f4cc743a98136df3c3763050a0e8223b52d9a960 ]

If DRM_LVDS_ENCODER=y but CONFIG_DRM_KMS_HELPER=m, build fails:

drivers/gpu/drm/bridge/lvds-encoder.o: In function `lvds_encoder_probe': lvds-encoder.c:(.text+0x155): undefined reference to `devm_drm_panel_bridge_add'

Reported-by: Hulk Robot hulkci@huawei.com Fixes: dbb58bfd9ae6 ("drm/bridge: Fix lvds-encoder since the panel_bridge rework.") Signed-off-by: YueHaibing yuehaibing@huawei.com Reviewed-by: Neil Armstrong narmstrong@baylibre.com Signed-off-by: Neil Armstrong narmstrong@baylibre.com Link: https://patchwork.freedesktop.org/patch/msgid/20190729071216.27488-1-yuehaib... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/bridge/Kconfig | 1 + 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig index adf9ae0e0b7c9..85aa824317f01 100644 --- a/drivers/gpu/drm/bridge/Kconfig +++ b/drivers/gpu/drm/bridge/Kconfig @@ -35,6 +35,7 @@ config DRM_DUMB_VGA_DAC config DRM_LVDS_ENCODER tristate "Transparent parallel to LVDS encoder support" depends on OF + select DRM_KMS_HELPER select DRM_PANEL_BRIDGE help Support for transparent parallel to LVDS encoders that don't require

[ Upstream commit e82f04ec6ba91065fd33a6201ffd7cab840e1475 ]

In qla2x00_alloc_fcport(), fcport is assigned to NULL in the error handling code on line 4880: fcport = NULL;

Then fcport is used on lines 4883-4886: INIT_WORK(&fcport->del_work, qla24xx_delete_sess_fn); INIT_WORK(&fcport->reg_work, qla_register_fcport_fn); INIT_LIST_HEAD(&fcport->gnl_entry); INIT_LIST_HEAD(&fcport->list);

Thus, possible null-pointer dereferences may occur.

To fix these bugs, qla2x00_alloc_fcport() directly returns NULL in the error handling code.

These bugs are found by a static analysis tool STCheck written by us.

Signed-off-by: Jia-Ju Bai baijiaju1990@gmail.com Acked-by: Himanshu Madhani hmadhani@marvell.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/qla2xxx/qla_init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index aef1e1a555350..0e154fea693e7 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -4252,7 +4252,7 @@ qla2x00_alloc_fcport(scsi_qla_host_t *vha, gfp_t flags) ql_log(ql_log_warn, vha, 0xd049, "Failed to allocate ct_sns request.\n"); kfree(fcport); - fcport = NULL; + return NULL; } INIT_WORK(&fcport->del_work, qla24xx_delete_sess_fn); INIT_LIST_HEAD(&fcport->gnl_entry);

[ Upstream commit cb4819934a7f9b87876f11ed05b8624c0114551b ]

KBUILD_EXTRA_SYMBOLS makes sense only when building external modules. Moreover, the modpost sets 'external_module' if the -e option is given.

I replaced $(patsubst %, -e %,...) with simpler $(addprefix -e,...) while I was here.

Signed-off-by: Masahiro Yamada yamada.masahiro@socionext.com Signed-off-by: Sasha Levin sashal@kernel.org --- scripts/Makefile.modpost | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost index 991db7d6e4df8..cf6f33b2633d5 100644 --- a/scripts/Makefile.modpost +++ b/scripts/Makefile.modpost @@ -75,7 +75,7 @@ modpost = scripts/mod/modpost \ $(if $(CONFIG_MODULE_SRCVERSION_ALL),-a,) \ $(if $(KBUILD_EXTMOD),-i,-o) $(kernelsymfile) \ $(if $(KBUILD_EXTMOD),-I $(modulesymfile)) \ - $(if $(KBUILD_EXTRA_SYMBOLS), $(patsubst %, -e %,$(KBUILD_EXTRA_SYMBOLS))) \ + $(if $(KBUILD_EXTMOD),$(addprefix -e ,$(KBUILD_EXTRA_SYMBOLS))) \ $(if $(KBUILD_EXTMOD),-o $(modulesymfile)) \ $(if $(CONFIG_DEBUG_SECTION_MISMATCH),,-S) \ $(if $(CONFIG_SECTION_MISMATCH_WARN_ONLY),,-E) \

[ Upstream commit ee07b93e7721ccd5d5b9fa6f0c10cb3fe2f1f4f9 ]

Prohibit probing on return_address() and subroutines which is called from return_address(), since the it is invoked from trace_hardirqs_off() which is also kprobe blacklisted.

Reported-by: Naresh Kamboju naresh.kamboju@linaro.org Signed-off-by: Masami Hiramatsu mhiramat@kernel.org Signed-off-by: Will Deacon will@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- arch/arm64/kernel/return_address.c | 3 +++ arch/arm64/kernel/stacktrace.c | 3 +++ 2 files changed, 6 insertions(+)

diff --git a/arch/arm64/kernel/return_address.c b/arch/arm64/kernel/return_address.c index 933adbc0f654d..0311fe52c8ffb 100644 --- a/arch/arm64/kernel/return_address.c +++ b/arch/arm64/kernel/return_address.c @@ -11,6 +11,7 @@

#include <linux/export.h> #include <linux/ftrace.h> +#include <linux/kprobes.h>

#include <asm/stack_pointer.h> #include <asm/stacktrace.h> @@ -32,6 +33,7 @@ static int save_return_addr(struct stackframe *frame, void *d) return 0; } } +NOKPROBE_SYMBOL(save_return_addr);

void *return_address(unsigned int level) { @@ -55,3 +57,4 @@ void *return_address(unsigned int level) return NULL; } EXPORT_SYMBOL_GPL(return_address); +NOKPROBE_SYMBOL(return_address); diff --git a/arch/arm64/kernel/stacktrace.c b/arch/arm64/kernel/stacktrace.c index d5718a060672e..2ae7630d685b5 100644 --- a/arch/arm64/kernel/stacktrace.c +++ b/arch/arm64/kernel/stacktrace.c @@ -18,6 +18,7 @@ #include <linux/kernel.h> #include <linux/export.h> #include <linux/ftrace.h> +#include <linux/kprobes.h> #include <linux/sched.h> #include <linux/sched/debug.h> #include <linux/sched/task_stack.h> @@ -85,6 +86,7 @@ int notrace unwind_frame(struct task_struct *tsk, struct stackframe *frame)

return 0; } +NOKPROBE_SYMBOL(unwind_frame);

void notrace walk_stackframe(struct task_struct *tsk, struct stackframe *frame, int (*fn)(struct stackframe *, void *), void *data) @@ -99,6 +101,7 @@ void notrace walk_stackframe(struct task_struct *tsk, struct stackframe *frame, break; } } +NOKPROBE_SYMBOL(walk_stackframe);

#ifdef CONFIG_STACKTRACE struct stack_trace_data {

[ Upstream commit 61f259821dd3306e49b7d42a3f90fb5a4ff3351b ]

Some processors may mispredict an array bounds check and speculatively access memory that they should not. With a user supplied array index we like to play things safe by masking the value with the array size before it is used as an index.

Signed-off-by: Tony Luck tony.luck@intel.com Link: https://lore.kernel.org/r/20190731043957.GA1600@agluck-desk2.amr.corp.intel.... Signed-off-by: Doug Ledford dledford@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/infiniband/core/user_mad.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c index 6511cb21f6e20..4a137bf584b04 100644 --- a/drivers/infiniband/core/user_mad.c +++ b/drivers/infiniband/core/user_mad.c @@ -49,6 +49,7 @@ #include <linux/sched.h> #include <linux/semaphore.h> #include <linux/slab.h> +#include <linux/nospec.h>

#include <linux/uaccess.h>

@@ -856,11 +857,14 @@ static int ib_umad_unreg_agent(struct ib_umad_file *file, u32 __user *arg)

if (get_user(id, arg)) return -EFAULT; + if (id >= IB_UMAD_MAX_AGENTS) + return -EINVAL;

mutex_lock(&file->port->file_mutex); mutex_lock(&file->mutex);

- if (id >= IB_UMAD_MAX_AGENTS || !__get_agent(file, id)) { + id = array_index_nospec(id, IB_UMAD_MAX_AGENTS); + if (!__get_agent(file, id)) { ret = -EINVAL; goto out; }

[ Upstream commit 9ca7ad6c7706edeae331c1632d0c63897418ebad ]

add_gpu_components() adds found GPU nodes from the DT to the match list, regardless of the status of the nodes. This is a problem, because if the nodes are disabled, they should not be on the match list because they will not be matched. This prevents display from initing if a GPU node is defined, but it's status is disabled.

Fix this by checking the node's status before adding it to the match list.

Fixes: dc3ea265b856 (drm/msm: Drop the gpu binding) Reviewed-by: Rob Clark robdclark@gmail.com Signed-off-by: Jeffrey Hugo jeffrey.l.hugo@gmail.com Signed-off-by: Sean Paul seanpaul@chromium.org Link: https://patchwork.freedesktop.org/patch/msgid/20190626180015.45242-1-jeffrey... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/msm/msm_drv.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index b970427e53a7a..77c45a2ebd833 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -1060,7 +1060,8 @@ static int add_gpu_components(struct device *dev, if (!np) return 0;

- drm_of_component_match_add(dev, matchptr, compare_of, np); + if (of_device_is_available(np)) + drm_of_component_match_add(dev, matchptr, compare_of, np);

of_node_put(np);

[ Upstream commit cbedfe11347fe418621bd188d58a206beb676218 ]

Commit d66acc39c7ce ("bitops: Optimise get_order()") introduced a compilation warning because "rx_frag_size" is an "ushort" while PAGE_SHIFT here is 16.

The commit changed the get_order() to be a multi-line macro where compilers insist to check all statements in the macro even when __builtin_constant_p(rx_frag_size) will return false as "rx_frag_size" is a module parameter.

In file included from ./arch/powerpc/include/asm/page_64.h:107, from ./arch/powerpc/include/asm/page.h:242, from ./arch/powerpc/include/asm/mmu.h:132, from ./arch/powerpc/include/asm/lppaca.h:47, from ./arch/powerpc/include/asm/paca.h:17, from ./arch/powerpc/include/asm/current.h:13, from ./include/linux/thread_info.h:21, from ./arch/powerpc/include/asm/processor.h:39, from ./include/linux/prefetch.h:15, from drivers/net/ethernet/emulex/benet/be_main.c:14: drivers/net/ethernet/emulex/benet/be_main.c: In function 'be_rx_cqs_create': ./include/asm-generic/getorder.h:54:9: warning: comparison is always true due to limited range of data type [-Wtype-limits] (((n) < (1UL << PAGE_SHIFT)) ? 0 : \ ^ drivers/net/ethernet/emulex/benet/be_main.c:3138:33: note: in expansion of macro 'get_order' adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE; ^~~~~~~~~

Fix it by moving all of this multi-line macro into a proper function, and killing __get_order() off.

[akpm@linux-foundation.org: remove __get_order() altogether] [cai@lca.pw: v2] Link: http://lkml.kernel.org/r/1564000166-31428-1-git-send-email-cai@lca.pw Link: http://lkml.kernel.org/r/1563914986-26502-1-git-send-email-cai@lca.pw Fixes: d66acc39c7ce ("bitops: Optimise get_order()") Signed-off-by: Qian Cai cai@lca.pw Reviewed-by: Nathan Chancellor natechancellor@gmail.com Cc: David S. Miller davem@davemloft.net Cc: Arnd Bergmann arnd@arndb.de Cc: David Howells dhowells@redhat.com Cc: Jakub Jelinek jakub@redhat.com Cc: Nick Desaulniers ndesaulniers@google.com Cc: Bill Wendling morbo@google.com Cc: James Y Knight jyknight@google.com Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- include/asm-generic/getorder.h | 50 ++++++++++++++-------------------- 1 file changed, 20 insertions(+), 30 deletions(-)

diff --git a/include/asm-generic/getorder.h b/include/asm-generic/getorder.h index c64bea7a52beb..e9f20b813a699 100644 --- a/include/asm-generic/getorder.h +++ b/include/asm-generic/getorder.h @@ -7,24 +7,6 @@ #include <linux/compiler.h> #include <linux/log2.h>

-/* - * Runtime evaluation of get_order() - */ -static inline __attribute_const__ -int __get_order(unsigned long size) -{ - int order; - - size--; - size >>= PAGE_SHIFT; -#if BITS_PER_LONG == 32 - order = fls(size); -#else - order = fls64(size); -#endif - return order; -} - /** * get_order - Determine the allocation order of a memory size * @size: The size for which to get the order @@ -43,19 +25,27 @@ int __get_order(unsigned long size) * to hold an object of the specified size. * * The result is undefined if the size is 0. - * - * This function may be used to initialise variables with compile time - * evaluations of constants. */ -#define get_order(n) \ -( \ - __builtin_constant_p(n) ? ( \ - ((n) == 0UL) ? BITS_PER_LONG - PAGE_SHIFT : \ - (((n) < (1UL << PAGE_SHIFT)) ? 0 : \ - ilog2((n) - 1) - PAGE_SHIFT + 1) \ - ) : \ - __get_order(n) \ -) +static inline __attribute_const__ int get_order(unsigned long size) +{ + if (__builtin_constant_p(size)) { + if (!size) + return BITS_PER_LONG - PAGE_SHIFT; + + if (size < (1UL << PAGE_SHIFT)) + return 0; + + return ilog2((size) - 1) - PAGE_SHIFT + 1; + } + + size--; + size >>= PAGE_SHIFT; +#if BITS_PER_LONG == 32 + return fls(size); +#else + return fls64(size); +#endif +}

#endif /* __ASSEMBLY__ */

From: Ian Abbott abbotti@mev.co.uk

commit b4d98bc3fc93ec3a58459948a2c0e0c9b501cd88 upstream.

In `dt3k_ns_to_timer()` the following lines near the end of the function result in a signed integer overflow:

prescale = 15; base = timer_base * (1 << prescale); divider = 65535; *nanosec = divider * base;

(`divider`, `base` and `prescale` are type `int`, `timer_base` and `*nanosec` are type `unsigned int`. The value of `timer_base` will be either 50 or 100.)

The main reason for the overflow is that the calculation for `base` is completely wrong. It should be:

base = timer_base * (prescale + 1);

which matches an earlier instance of this calculation in the same function.

Reported-by: David Binderman dcb314@hotmail.com Cc: stable@vger.kernel.org Signed-off-by: Ian Abbott abbotti@mev.co.uk Link: https://lore.kernel.org/r/20190812111517.26803-1-abbotti@mev.co.uk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/staging/comedi/drivers/dt3000.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/staging/comedi/drivers/dt3000.c +++ b/drivers/staging/comedi/drivers/dt3000.c @@ -377,7 +377,7 @@ static int dt3k_ns_to_timer(unsigned int }

prescale = 15; - base = timer_base * (1 << prescale); + base = timer_base * (prescale + 1); divider = 65535; *nanosec = divider * base; return (prescale << 16) | (divider);

From: Jacopo Mondi jacopo+renesas@jmondi.org

commit b9ddd5091160793ee9fac10da765cf3f53d2aaf0 upstream.

The max9611 driver reads the die temperature at probe time to validate the communication channel. Use the actual read value to perform the test instead of the read function return value, which was mistakenly used so far.

The temperature reading test was only successful because the 0 return value is in the range of supported temperatures.

Fixes: 69780a3bbc0b ("iio: adc: Add Maxim max9611 ADC driver") Signed-off-by: Jacopo Mondi jacopo+renesas@jmondi.org Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/iio/adc/max9611.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/iio/adc/max9611.c +++ b/drivers/iio/adc/max9611.c @@ -484,7 +484,7 @@ static int max9611_init(struct max9611_d if (ret) return ret;

- regval = ret & MAX9611_TEMP_MASK; + regval &= MAX9611_TEMP_MASK;

if ((regval > MAX9611_TEMP_MAX_POS && regval < MAX9611_TEMP_MIN_NEG) ||

From: Yoshihiro Shimoda yoshihiro.shimoda.uh@renesas.com

commit 5dac665cf403967bb79a7aeb8c182a621fe617ff upstream.

Since the role_store() uses strncmp(), it's possible to refer out-of-memory if the sysfs data size is smaller than strlen("host"). This patch fixes it by using sysfs_streq() instead of strncmp().

Fixes: cc995c9ec118 ("usb: gadget: udc: renesas_usb3: add support for usb role swap") Cc: stable@vger.kernel.org # v4.12+ Reviewed-by: Geert Uytterhoeven geert+renesas@glider.be Signed-off-by: Yoshihiro Shimoda yoshihiro.shimoda.uh@renesas.com Signed-off-by: Felipe Balbi felipe.balbi@linux.intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/usb/gadget/udc/renesas_usb3.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/usb/gadget/udc/renesas_usb3.c +++ b/drivers/usb/gadget/udc/renesas_usb3.c @@ -21,6 +21,7 @@ #include <linux/pm_runtime.h> #include <linux/sizes.h> #include <linux/slab.h> +#include <linux/string.h> #include <linux/sys_soc.h> #include <linux/uaccess.h> #include <linux/usb/ch9.h> @@ -2315,9 +2316,9 @@ static ssize_t role_store(struct device if (usb3->forced_b_device) return -EBUSY;

- if (!strncmp(buf, "host", strlen("host"))) + if (sysfs_streq(buf, "host")) new_mode_is_host = true; - else if (!strncmp(buf, "peripheral", strlen("peripheral"))) + else if (sysfs_streq(buf, "peripheral")) new_mode_is_host = false; else return -EINVAL;

From: Oliver Neukum oneukum@suse.com

commit 54364278fb3cabdea51d6398b07c87415065b3fc upstream.

A few checks checked for the size of the pointer to a structure instead of the structure itself. Copy & paste issue presumably.

Fixes: e4c6fb7794982 ("usbnet: move the CDC parser into USB core") Cc: stable stable@vger.kernel.org Reported-by: syzbot+45a53506b65321c1fe91@syzkaller.appspotmail.com Signed-off-by: Oliver Neukum oneukum@suse.com Link: https://lore.kernel.org/r/20190813093541.18889-1-oneukum@suse.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/usb/core/message.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -2143,14 +2143,14 @@ int cdc_parse_cdc_header(struct usb_cdc_ (struct usb_cdc_dmm_desc *)buffer; break; case USB_CDC_MDLM_TYPE: - if (elength < sizeof(struct usb_cdc_mdlm_desc *)) + if (elength < sizeof(struct usb_cdc_mdlm_desc)) goto next_desc; if (desc) return -EINVAL; desc = (struct usb_cdc_mdlm_desc *)buffer; break; case USB_CDC_MDLM_DETAIL_TYPE: - if (elength < sizeof(struct usb_cdc_mdlm_detail_desc *)) + if (elength < sizeof(struct usb_cdc_mdlm_detail_desc)) goto next_desc; if (detail) return -EINVAL;

From: Yoshiaki Okamoto yokamoto@allied-telesis.co.jp

commit 7e7ae38bf928c5cfa6dd6e9a2cf8b42c84a27c92 upstream.

This patch adds support for MF871A USB modem (aka Speed USB STICK U03) to option driver. This modem is manufactured by ZTE corporation, and sold by KDDI.

Interface layout: 0: AT 1: MODEM

usb-devices output: T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 9 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=19d2 ProdID=1481 Rev=52.87 S: Manufacturer=ZTE,Incorporated S: Product=ZTE Technologies MSM S: SerialNumber=1234567890ABCDEF C: #Ifs= 2 Cfg#= 1 Atr=80 MxPwr=500mA I: If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option

Co-developed-by: Hiroyuki Yamamoto hyamamo@allied-telesis.co.jp Signed-off-by: Hiroyuki Yamamoto hyamamo@allied-telesis.co.jp Signed-off-by: Yoshiaki Okamoto yokamoto@allied-telesis.co.jp Cc: stable stable@vger.kernel.org Signed-off-by: Johan Hovold johan@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/usb/serial/option.c | 1 + 1 file changed, 1 insertion(+)

--- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -1552,6 +1552,7 @@ static const struct usb_device_id option { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1428, 0xff, 0xff, 0xff), /* Telewell TW-LTE 4G v2 */ .driver_info = RSVD(2) }, { USB_DEVICE_INTERFACE_CLASS(ZTE_VENDOR_ID, 0x1476, 0xff) }, /* GosunCn ZTE WeLink ME3630 (ECM/NCM mode) */ + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1481, 0xff, 0x00, 0x00) }, /* ZTE MF871A */ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1533, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1534, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1535, 0xff, 0xff, 0xff) },

From: Tony Lindgren tony@atomide.com

commit 6caf0be40a707689e8ff8824fdb96ef77685b1ba upstream.

On Motorola Mapphone devices such as Droid 4 there are five USB ports that do not use the same layout as Gobi 1K/2K/etc devices listed in qcserial.c. So we should use qcaux.c or option.c as noted by Dan Williams dan.j.williams@intel.com.

As the Motorola USB serial ports have an interrupt endpoint as shown with lsusb -v, we should use option.c instead of qcaux.c as pointed out by Johan Hovold johan@kernel.org.

The ff/ff/ff interfaces seem to always be UARTs on Motorola devices. For the other interfaces, class 0x0a (CDC Data) should not in general be added as they are typically part of a multi-interface function as noted earlier by Bjørn Mork bjorn@mork.no.

However, looking at the Motorola mapphone kernel code, the mdm6600 0x0a class is only used for flashing the modem firmware, and there are no other interfaces. So I've added that too with more details below as it works just fine.

The ttyUSB ports on Droid 4 are:

ttyUSB0 DIAG, CQDM-capable ttyUSB1 MUX or NMEA, no response ttyUSB2 MUX or NMEA, no response ttyUSB3 TCMD ttyUSB4 AT-capable

The ttyUSB0 is detected as QCDM capable by ModemManager. I think it's only used for debugging with ModemManager --debug for sending custom AT commands though. ModemManager already can manage data connection using the USB QMI ports that are already handled by the qmi_wwan.c driver.

To enable the MUX or NMEA ports, it seems that something needs to be done additionally to enable them, maybe via the DIAG or TCMD port. It might be just a NVRAM setting somewhere, but I have no idea what NVRAM settings may need changing for that.

The TCMD port seems to be a Motorola custom protocol for testing the modem and to configure it's NVRAM and seems to work just fine based on a quick test with a minimal tcmdrw tool I wrote.

The voice modem AT-capable port seems to provide only partial support, and no PM support compared to the TS 27.010 based UART wired directly to the modem.

The UARTs added with this change are the same product IDs as the Motorola Mapphone Android Linux kernel mdm6600_id_table. I don't have any mdm9600 based devices, so I have only tested these on mdm6600 based droid 4.

Then for the class 0x0a (CDC Data) mode, the Motorola Mapphone Android Linux kernel driver moto_flashqsc.c just seems to change the port->bulk_out_size to 8K from the default. And is only used for flashing the modem firmware it seems.

I've verified that flashing the modem with signed firmware works just fine with the option driver after manually toggling the GPIO pins, so I've added droid 4 modem flashing mode to the option driver. I've not added the other devices listed in moto_flashqsc.c in case they really need different port->bulk_out_size. Those can be added as they get tested to work for flashing the modem.

After this patch the output of /sys/kernel/debug/usb/devices has the following for normal 22b8:2a70 mode including the related qmi_wwan interfaces:

T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=22b8 ProdID=2a70 Rev= 0.00 S: Manufacturer=Motorola, Incorporated S: Product=Flash MZ600 C:* #Ifs= 9 Cfg#= 1 Atr=e0 MxPwr=500mA I:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option E: Ad=81(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=01(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms I:* If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms I:* If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option E: Ad=83(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=03(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms I:* If#= 3 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option E: Ad=84(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=04(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms I:* If#= 4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=option E: Ad=85(I) Atr=03(Int.) MxPS= 64 Ivl=5ms E: Ad=86(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=05(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms I:* If#= 5 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=fb Prot=ff Driver=qmi_wwan E: Ad=87(I) Atr=03(Int.) MxPS= 64 Ivl=5ms E: Ad=88(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=06(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms I:* If#= 6 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=fb Prot=ff Driver=qmi_wwan E: Ad=89(I) Atr=03(Int.) MxPS= 64 Ivl=5ms E: Ad=8a(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=07(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms I:* If#= 7 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=fb Prot=ff Driver=qmi_wwan E: Ad=8b(I) Atr=03(Int.) MxPS= 64 Ivl=5ms E: Ad=8c(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=08(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms I:* If#= 8 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=fb Prot=ff Driver=qmi_wwan E: Ad=8d(I) Atr=03(Int.) MxPS= 64 Ivl=5ms E: Ad=8e(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=09(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms

In 22b8:900e "qc_dload" mode the device shows up as:

T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=22b8 ProdID=900e Rev= 0.00 S: Manufacturer=Motorola, Incorporated S: Product=Flash MZ600 C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=500mA I:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option E: Ad=81(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=01(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms

And in 22b8:4281 "ram_downloader" mode the device shows up as:

T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=22b8 ProdID=4281 Rev= 0.00 S: Manufacturer=Motorola, Incorporated S: Product=Flash MZ600 C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=500mA I:* If#= 0 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=fc Driver=option E: Ad=81(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=01(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms

Cc: Bjørn Mork bjorn@mork.no Cc: Dan Williams dan.j.williams@intel.com Cc: Lars Melin larsm17@gmail.com Cc: Marcel Partap mpartap@gmx.net Cc: Merlijn Wajer merlijn@wizzup.org Cc: Michael Scott hashcode0f@gmail.com Cc: NeKit nekit1000@gmail.com Cc: Pavel Machek pavel@ucw.cz Cc: Sebastian Reichel sre@kernel.org Tested-by: Pavel Machek pavel@ucw.cz Signed-off-by: Tony Lindgren tony@atomide.com Cc: stable stable@vger.kernel.org Signed-off-by: Johan Hovold johan@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/usb/serial/option.c | 5 +++++ 1 file changed, 5 insertions(+)

--- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -971,6 +971,11 @@ static const struct usb_device_id option { USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0xff, 0x06, 0x7B) }, { USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0xff, 0x06, 0x7C) },

+ /* Motorola devices */ + { USB_DEVICE_AND_INTERFACE_INFO(0x22b8, 0x2a70, 0xff, 0xff, 0xff) }, /* mdm6600 */ + { USB_DEVICE_AND_INTERFACE_INFO(0x22b8, 0x2e0a, 0xff, 0xff, 0xff) }, /* mdm9600 */ + { USB_DEVICE_AND_INTERFACE_INFO(0x22b8, 0x4281, 0x0a, 0x00, 0xfc) }, /* mdm ram dl */ + { USB_DEVICE_AND_INTERFACE_INFO(0x22b8, 0x900e, 0xff, 0xff, 0xff) }, /* mdm qc dl */

{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_V640) }, { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_V620) },

This reverts commit e99e7745d03fc50ba7c5b7c91c17294fee2d5991.

Ben Hutchings writes:

Sorry, this is the same issue that was already fixed by "tcp: reset sk_send_head in tcp_write_queue_purge". You can drop my version from the queue for 4.4 and 4.9 and revert it for 4.14.

Signed-off-by: Sasha Levin sashal@kernel.org --- include/net/tcp.h | 3 --- 1 file changed, 3 deletions(-)

diff --git a/include/net/tcp.h b/include/net/tcp.h index 9de2c8cdcc512..7994e569644e0 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -1613,8 +1613,6 @@ static inline void tcp_init_send_head(struct sock *sk) sk->sk_send_head = NULL; }

-static inline void tcp_init_send_head(struct sock *sk); - /* write queue abstraction */ static inline void tcp_write_queue_purge(struct sock *sk) { @@ -1623,7 +1621,6 @@ static inline void tcp_write_queue_purge(struct sock *sk) tcp_chrono_stop(sk, TCP_CHRONO_BUSY); while ((skb = __skb_dequeue(&sk->sk_write_queue)) != NULL) sk_wmem_free_skb(sk, skb); - tcp_init_send_head(sk); sk_mem_reclaim(sk); tcp_clear_all_retrans_hints(tcp_sk(sk)); tcp_init_send_head(sk);

From: Will Deacon will@kernel.org

commit b6143d10d23ebb4a77af311e8b8b7f019d0163e6 upstream.

The initial support for dynamic ftrace trampolines in modules made use of an indirect branch which loaded its target from the beginning of a special section (e71a4e1bebaf7 ("arm64: ftrace: add support for far branches to dynamic ftrace")). Since no instructions were being patched, no cache maintenance was needed. However, later in be0f272bfc83 ("arm64: ftrace: emit ftrace-mod.o contents through code") this code was reworked to output the trampoline instructions directly into the PLT entry but, unfortunately, the necessary cache maintenance was overlooked.

Add a call to __flush_icache_range() after writing the new trampoline instructions but before patching in the branch to the trampoline.

Cc: Ard Biesheuvel ard.biesheuvel@linaro.org Cc: James Morse james.morse@arm.com Cc: stable@vger.kernel.org Fixes: be0f272bfc83 ("arm64: ftrace: emit ftrace-mod.o contents through code") Signed-off-by: Will Deacon will@kernel.org Signed-off-by: Catalin Marinas catalin.marinas@arm.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- arch/arm64/kernel/ftrace.c | 21 ++++++++++++--------- 1 file changed, 12 insertions(+), 9 deletions(-)

--- a/arch/arm64/kernel/ftrace.c +++ b/arch/arm64/kernel/ftrace.c @@ -76,7 +76,7 @@ int ftrace_make_call(struct dyn_ftrace *

if (offset < -SZ_128M || offset >= SZ_128M) { #ifdef CONFIG_ARM64_MODULE_PLTS - struct plt_entry trampoline; + struct plt_entry trampoline, *dst; struct module *mod;

/* @@ -104,24 +104,27 @@ int ftrace_make_call(struct dyn_ftrace * * is added in the future, but for now, the pr_err() below * deals with a theoretical issue only. */ + dst = mod->arch.ftrace_trampoline; trampoline = get_plt_entry(addr); - if (!plt_entries_equal(mod->arch.ftrace_trampoline, - &trampoline)) { - if (!plt_entries_equal(mod->arch.ftrace_trampoline, - &(struct plt_entry){})) { + if (!plt_entries_equal(dst, &trampoline)) { + if (!plt_entries_equal(dst, &(struct plt_entry){})) { pr_err("ftrace: far branches to multiple entry points unsupported inside a single module\n"); return -EINVAL; }

/* point the trampoline to our ftrace entry point */ module_disable_ro(mod); - *mod->arch.ftrace_trampoline = trampoline; + *dst = trampoline; module_enable_ro(mod, true);

- /* update trampoline before patching in the branch */ - smp_wmb(); + /* + * Ensure updated trampoline is visible to instruction + * fetch before we patch in the branch. + */ + flush_icache_range((unsigned long)&dst[0], + (unsigned long)&dst[1]); } - addr = (unsigned long)(void *)mod->arch.ftrace_trampoline; + addr = (unsigned long)dst; #else /* CONFIG_ARM64_MODULE_PLTS */ return -EINVAL; #endif /* CONFIG_ARM64_MODULE_PLTS */

From: YueHaibing yuehaibing@huawei.com

commit 49e6979e7e92cf496105b5636f1df0ac17c159c0 upstream.

trackpoint_detect() should be static inline while CONFIG_MOUSE_PS2_TRACKPOINT is not set, otherwise, we build fails:

drivers/input/mouse/alps.o: In function `trackpoint_detect': alps.c:(.text+0x8e00): multiple definition of `trackpoint_detect' drivers/input/mouse/psmouse-base.o:psmouse-base.c:(.text+0x1b50): first defined here

Reported-by: Hulk Robot hulkci@huawei.com Fixes: 55e3d9224b60 ("Input: psmouse - allow disabing certain protocol extensions") Signed-off-by: YueHaibing yuehaibing@huawei.com Signed-off-by: Dmitry Torokhov dmitry.torokhov@gmail.com Cc: Hui Wang hui.wang@canonical.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/input/mouse/trackpoint.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/input/mouse/trackpoint.h +++ b/drivers/input/mouse/trackpoint.h @@ -161,7 +161,8 @@ struct trackpoint_data { #ifdef CONFIG_MOUSE_PS2_TRACKPOINT int trackpoint_detect(struct psmouse *psmouse, bool set_properties); #else -inline int trackpoint_detect(struct psmouse *psmouse, bool set_properties) +static inline int trackpoint_detect(struct psmouse *psmouse, + bool set_properties) { return -ENOSYS; }

From: Manish Chopra manishc@marvell.com

[ Upstream commit 4a4d2d372fb9b9229327e2ed01d5d9572eddf4de ]

Commit 04f05230c5c13 ("bnx2x: Remove configured vlans as part of unload sequence."), introduced a regression in driver that as a part of VF's reload flow, VLANs created on the VF doesn't get re-configured in hardware as vlan metadata/info was not getting cleared for the VFs which causes vlan PING to stop.

This patch clears the vlan metadata/info so that VLANs gets re-configured back in the hardware in VF's reload flow and PING/traffic continues for VLANs created over the VFs.

Fixes: 04f05230c5c13 ("bnx2x: Remove configured vlans as part of unload sequence.") Signed-off-by: Manish Chopra manishc@marvell.com Signed-off-by: Sudarsana Kalluru skalluru@marvell.com Signed-off-by: Shahed Shaikh shshaikh@marvell.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c | 7 ++++--- drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h | 2 ++ drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 17 ++++++++++++----- 3 files changed, 18 insertions(+), 8 deletions(-)

--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c @@ -3057,12 +3057,13 @@ int bnx2x_nic_unload(struct bnx2x *bp, i /* if VF indicate to PF this function is going down (PF will delete sp * elements and clear initializations */ - if (IS_VF(bp)) + if (IS_VF(bp)) { + bnx2x_clear_vlan_info(bp); bnx2x_vfpf_close_vf(bp); - else if (unload_mode != UNLOAD_RECOVERY) + } else if (unload_mode != UNLOAD_RECOVERY) { /* if this is a normal/close unload need to clean up chip*/ bnx2x_chip_cleanup(bp, unload_mode, keep_link); - else { + } else { /* Send the UNLOAD_REQUEST to the MCP */ bnx2x_send_unload_req(bp, unload_mode);

--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h @@ -425,6 +425,8 @@ void bnx2x_set_reset_global(struct bnx2x void bnx2x_disable_close_the_gate(struct bnx2x *bp); int bnx2x_init_hw_func_cnic(struct bnx2x *bp);

+void bnx2x_clear_vlan_info(struct bnx2x *bp); + /** * bnx2x_sp_event - handle ramrods completion. * --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c @@ -8488,11 +8488,21 @@ int bnx2x_set_vlan_one(struct bnx2x *bp, return rc; }

+void bnx2x_clear_vlan_info(struct bnx2x *bp) +{ + struct bnx2x_vlan_entry *vlan; + + /* Mark that hw forgot all entries */ + list_for_each_entry(vlan, &bp->vlan_reg, link) + vlan->hw = false; + + bp->vlan_cnt = 0; +} + static int bnx2x_del_all_vlans(struct bnx2x *bp) { struct bnx2x_vlan_mac_obj *vlan_obj = &bp->sp_objs[0].vlan_obj; unsigned long ramrod_flags = 0, vlan_flags = 0; - struct bnx2x_vlan_entry *vlan; int rc;

__set_bit(RAMROD_COMP_WAIT, &ramrod_flags); @@ -8501,10 +8511,7 @@ static int bnx2x_del_all_vlans(struct bn if (rc) return rc;

- /* Mark that hw forgot all entries */ - list_for_each_entry(vlan, &bp->vlan_reg, link) - vlan->hw = false; - bp->vlan_cnt = 0; + bnx2x_clear_vlan_info(bp);

return 0; }

From: Eric Dumazet edumazet@google.com

[ Upstream commit 32d3182cd2cd29b2e7e04df7b0db350fbe11289f ]

packet_sendmsg() checks tx_ring.pg_vec to decide if it must call tpacket_snd().

Problem is that the check is lockless, meaning another thread can issue a concurrent setsockopt(PACKET_TX_RING ) to flip tx_ring.pg_vec back to NULL.

Given that tpacket_snd() grabs pg_vec_lock mutex, we can perform the check again to solve the race.

syzbot reported :

kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 11429 Comm: syz-executor394 Not tainted 5.3.0-rc4+ #101 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:packet_lookup_frame+0x8d/0x270 net/packet/af_packet.c:474 Code: c1 ee 03 f7 73 0c 80 3c 0e 00 0f 85 cb 01 00 00 48 8b 0b 89 c0 4c 8d 24 c1 48 b8 00 00 00 00 00 fc ff df 4c 89 e1 48 c1 e9 03 <80> 3c 01 00 0f 85 94 01 00 00 48 8d 7b 10 4d 8b 3c 24 48 b8 00 00 RSP: 0018:ffff88809f82f7b8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff8880a45c7030 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 1ffff110148b8e06 RDI: ffff8880a45c703c RBP: ffff88809f82f7e8 R08: ffff888087aea200 R09: fffffbfff134ae50 R10: fffffbfff134ae4f R11: ffffffff89a5727f R12: 0000000000000000 R13: 0000000000000001 R14: ffff8880a45c6ac0 R15: 0000000000000000 FS: 00007fa04716f700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa04716edb8 CR3: 0000000091eb4000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: packet_current_frame net/packet/af_packet.c:487 [inline] tpacket_snd net/packet/af_packet.c:2667 [inline] packet_sendmsg+0x590/0x6250 net/packet/af_packet.c:2975 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:657 ___sys_sendmsg+0x3e2/0x920 net/socket.c:2311 __sys_sendmmsg+0x1bf/0x4d0 net/socket.c:2413 __do_sys_sendmmsg net/socket.c:2442 [inline] __se_sys_sendmmsg net/socket.c:2439 [inline] __x64_sys_sendmmsg+0x9d/0x100 net/socket.c:2439 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Fixes: 69e3c75f4d54 ("net: TX_RING and packet mmap") Signed-off-by: Eric Dumazet edumazet@google.com Reported-by: syzbot syzkaller@googlegroups.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/packet/af_packet.c | 7 +++++++ 1 file changed, 7 insertions(+)

--- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -2654,6 +2654,13 @@ static int tpacket_snd(struct packet_soc

mutex_lock(&po->pg_vec_lock);

+ /* packet_sendmsg() check on tx_ring.pg_vec was lockless, + * we need to confirm it under protection of pg_vec_lock. + */ + if (unlikely(!po->tx_ring.pg_vec)) { + err = -EBUSY; + goto out; + } if (likely(saddr == NULL)) { dev = packet_cached_dev_get(po); proto = po->num;

From: Ross Lagerwall ross.lagerwall@citrix.com

[ Upstream commit 3a0233ddec554b886298de2428edb5c50a20e694 ]

At this point nr_frags has been incremented but the frag does not yet have a page assigned so freeing the skb results in a crash. Reset nr_frags before freeing the skb to prevent this.

Signed-off-by: Ross Lagerwall ross.lagerwall@citrix.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/xen-netback/netback.c | 2 ++ 1 file changed, 2 insertions(+)

--- a/drivers/net/xen-netback/netback.c +++ b/drivers/net/xen-netback/netback.c @@ -927,6 +927,7 @@ static void xenvif_tx_build_gops(struct skb_shinfo(skb)->nr_frags = MAX_SKB_FRAGS; nskb = xenvif_alloc_skb(0); if (unlikely(nskb == NULL)) { + skb_shinfo(skb)->nr_frags = 0; kfree_skb(skb); xenvif_tx_err(queue, &txreq, extra_count, idx); if (net_ratelimit()) @@ -942,6 +943,7 @@ static void xenvif_tx_build_gops(struct

if (xenvif_set_skb_gso(queue->vif, skb, gso)) { /* Failure in xenvif_set_skb_gso is fatal. */ + skb_shinfo(skb)->nr_frags = 0; kfree_skb(skb); kfree_skb(nskb); break;

From: Maxim Mikityanskiy maximmi@mellanox.com

[ Upstream commit 405b93eb764367a670e729da18e54dc42db32620 ]

The current ARFS code relies on certain fields to be set in the SKB (e.g. transport_header) and extracts IP addresses and ports by custom code that parses the packet. The necessary SKB fields, however, are not always set at that point, which leads to an out-of-bounds access. Use skb_flow_dissect_flow_keys() to get the necessary information reliably, fix the out-of-bounds access and reuse the code.

Fixes: 18c908e477dc ("net/mlx5e: Add accelerated RFS support") Signed-off-by: Maxim Mikityanskiy maximmi@mellanox.com Reviewed-by: Tariq Toukan tariqt@mellanox.com Signed-off-by: Saeed Mahameed saeedm@mellanox.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/mellanox/mlx5/core/en_arfs.c | 97 +++++++--------------- 1 file changed, 34 insertions(+), 63 deletions(-)

--- a/drivers/net/ethernet/mellanox/mlx5/core/en_arfs.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_arfs.c @@ -439,12 +439,6 @@ arfs_hash_bucket(struct arfs_table *arfs return &arfs_t->rules_hash[bucket_idx]; }

-static u8 arfs_get_ip_proto(const struct sk_buff *skb) -{ - return (skb->protocol == htons(ETH_P_IP)) ? - ip_hdr(skb)->protocol : ipv6_hdr(skb)->nexthdr; -} - static struct arfs_table *arfs_get_table(struct mlx5e_arfs_tables *arfs, u8 ip_proto, __be16 etype) { @@ -601,31 +595,9 @@ out: arfs_may_expire_flow(priv); }

-/* return L4 destination port from ip4/6 packets */ -static __be16 arfs_get_dst_port(const struct sk_buff *skb) -{ - char *transport_header; - - transport_header = skb_transport_header(skb); - if (arfs_get_ip_proto(skb) == IPPROTO_TCP) - return ((struct tcphdr *)transport_header)->dest; - return ((struct udphdr *)transport_header)->dest; -} - -/* return L4 source port from ip4/6 packets */ -static __be16 arfs_get_src_port(const struct sk_buff *skb) -{ - char *transport_header; - - transport_header = skb_transport_header(skb); - if (arfs_get_ip_proto(skb) == IPPROTO_TCP) - return ((struct tcphdr *)transport_header)->source; - return ((struct udphdr *)transport_header)->source; -} - static struct arfs_rule *arfs_alloc_rule(struct mlx5e_priv *priv, struct arfs_table *arfs_t, - const struct sk_buff *skb, + const struct flow_keys *fk, u16 rxq, u32 flow_id) { struct arfs_rule *rule; @@ -640,19 +612,19 @@ static struct arfs_rule *arfs_alloc_rule INIT_WORK(&rule->arfs_work, arfs_handle_work);

tuple = &rule->tuple; - tuple->etype = skb->protocol; + tuple->etype = fk->basic.n_proto; + tuple->ip_proto = fk->basic.ip_proto; if (tuple->etype == htons(ETH_P_IP)) { - tuple->src_ipv4 = ip_hdr(skb)->saddr; - tuple->dst_ipv4 = ip_hdr(skb)->daddr; + tuple->src_ipv4 = fk->addrs.v4addrs.src; + tuple->dst_ipv4 = fk->addrs.v4addrs.dst; } else { - memcpy(&tuple->src_ipv6, &ipv6_hdr(skb)->saddr, + memcpy(&tuple->src_ipv6, &fk->addrs.v6addrs.src, sizeof(struct in6_addr)); - memcpy(&tuple->dst_ipv6, &ipv6_hdr(skb)->daddr, + memcpy(&tuple->dst_ipv6, &fk->addrs.v6addrs.dst, sizeof(struct in6_addr)); } - tuple->ip_proto = arfs_get_ip_proto(skb); - tuple->src_port = arfs_get_src_port(skb); - tuple->dst_port = arfs_get_dst_port(skb); + tuple->src_port = fk->ports.src; + tuple->dst_port = fk->ports.dst;

rule->flow_id = flow_id; rule->filter_id = priv->fs.arfs.last_filter_id++ % RPS_NO_FILTER; @@ -663,37 +635,33 @@ static struct arfs_rule *arfs_alloc_rule return rule; }

-static bool arfs_cmp_ips(struct arfs_tuple *tuple, - const struct sk_buff *skb) +static bool arfs_cmp(const struct arfs_tuple *tuple, const struct flow_keys *fk) { - if (tuple->etype == htons(ETH_P_IP) && - tuple->src_ipv4 == ip_hdr(skb)->saddr && - tuple->dst_ipv4 == ip_hdr(skb)->daddr) - return true; - if (tuple->etype == htons(ETH_P_IPV6) && - (!memcmp(&tuple->src_ipv6, &ipv6_hdr(skb)->saddr, - sizeof(struct in6_addr))) && - (!memcmp(&tuple->dst_ipv6, &ipv6_hdr(skb)->daddr, - sizeof(struct in6_addr)))) - return true; + if (tuple->src_port != fk->ports.src || tuple->dst_port != fk->ports.dst) + return false; + if (tuple->etype != fk->basic.n_proto) + return false; + if (tuple->etype == htons(ETH_P_IP)) + return tuple->src_ipv4 == fk->addrs.v4addrs.src && + tuple->dst_ipv4 == fk->addrs.v4addrs.dst; + if (tuple->etype == htons(ETH_P_IPV6)) + return !memcmp(&tuple->src_ipv6, &fk->addrs.v6addrs.src, + sizeof(struct in6_addr)) && + !memcmp(&tuple->dst_ipv6, &fk->addrs.v6addrs.dst, + sizeof(struct in6_addr)); return false; }

static struct arfs_rule *arfs_find_rule(struct arfs_table *arfs_t, - const struct sk_buff *skb) + const struct flow_keys *fk) { struct arfs_rule *arfs_rule; struct hlist_head *head; - __be16 src_port = arfs_get_src_port(skb); - __be16 dst_port = arfs_get_dst_port(skb);

- head = arfs_hash_bucket(arfs_t, src_port, dst_port); + head = arfs_hash_bucket(arfs_t, fk->ports.src, fk->ports.dst); hlist_for_each_entry(arfs_rule, head, hlist) { - if (arfs_rule->tuple.src_port == src_port && - arfs_rule->tuple.dst_port == dst_port && - arfs_cmp_ips(&arfs_rule->tuple, skb)) { + if (arfs_cmp(&arfs_rule->tuple, fk)) return arfs_rule; - } }

return NULL; @@ -706,20 +674,24 @@ int mlx5e_rx_flow_steer(struct net_devic struct mlx5e_arfs_tables *arfs = &priv->fs.arfs; struct arfs_table *arfs_t; struct arfs_rule *arfs_rule; + struct flow_keys fk; + + if (!skb_flow_dissect_flow_keys(skb, &fk, 0)) + return -EPROTONOSUPPORT;

- if (skb->protocol != htons(ETH_P_IP) && - skb->protocol != htons(ETH_P_IPV6)) + if (fk.basic.n_proto != htons(ETH_P_IP) && + fk.basic.n_proto != htons(ETH_P_IPV6)) return -EPROTONOSUPPORT;

if (skb->encapsulation) return -EPROTONOSUPPORT;

- arfs_t = arfs_get_table(arfs, arfs_get_ip_proto(skb), skb->protocol); + arfs_t = arfs_get_table(arfs, fk.basic.ip_proto, fk.basic.n_proto); if (!arfs_t) return -EPROTONOSUPPORT;

spin_lock_bh(&arfs->arfs_lock); - arfs_rule = arfs_find_rule(arfs_t, skb); + arfs_rule = arfs_find_rule(arfs_t, &fk); if (arfs_rule) { if (arfs_rule->rxq == rxq_index) { spin_unlock_bh(&arfs->arfs_lock); @@ -727,8 +699,7 @@ int mlx5e_rx_flow_steer(struct net_devic } arfs_rule->rxq = rxq_index; } else { - arfs_rule = arfs_alloc_rule(priv, arfs_t, skb, - rxq_index, flow_id); + arfs_rule = arfs_alloc_rule(priv, arfs_t, &fk, rxq_index, flow_id); if (!arfs_rule) { spin_unlock_bh(&arfs->arfs_lock); return -ENOMEM;

From: YueHaibing yuehaibing@huawei.com

[ Upstream commit d595b03de2cb0bdf9bcdf35ff27840cc3a37158f ]

As commit 30d8177e8ac7 ("bonding: Always enable vlan tx offload") said, we should always enable bonding's vlan tx offload, pass the vlan packets to the slave devices with vlan tci, let them to handle vlan implementation.

Now if encapsulation protocols like VXLAN is used, skb->encapsulation may be set, then the packet is passed to vlan device which based on bonding device. However in netif_skb_features(), the check of hw_enc_features:

if (skb->encapsulation) features &= dev->hw_enc_features;

clears NETIF_F_HW_VLAN_CTAG_TX/NETIF_F_HW_VLAN_STAG_TX. This results in same issue in commit 30d8177e8ac7 like this:

vlan_dev_hard_start_xmit -->dev_queue_xmit -->validate_xmit_skb -->netif_skb_features //NETIF_F_HW_VLAN_CTAG_TX is cleared -->validate_xmit_vlan -->__vlan_hwaccel_push_inside //skb->tci is cleared ... --> bond_start_xmit --> bond_xmit_hash //BOND_XMIT_POLICY_ENCAP34 --> __skb_flow_dissect // nhoff point to IP header --> case htons(ETH_P_8021Q) // skb_vlan_tag_present is false, so vlan = __skb_header_pointer(skb, nhoff, sizeof(_vlan), //vlan point to ip header wrongly

Fixes: b2a103e6d0af ("bonding: convert to ndo_fix_features") Signed-off-by: YueHaibing yuehaibing@huawei.com Acked-by: Jay Vosburgh jay.vosburgh@canonical.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/bonding/bond_main.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1108,7 +1108,9 @@ static void bond_compute_features(struct

done: bond_dev->vlan_features = vlan_features; - bond_dev->hw_enc_features = enc_features | NETIF_F_GSO_ENCAP_ALL; + bond_dev->hw_enc_features = enc_features | NETIF_F_GSO_ENCAP_ALL | + NETIF_F_HW_VLAN_CTAG_TX | + NETIF_F_HW_VLAN_STAG_TX; bond_dev->gso_max_segs = gso_max_segs; netif_set_gso_max_size(bond_dev, gso_max_size);

From: Florian Westphal fw@strlen.de

commit e4db5b61c572475bbbcf63e3c8a2606bfccf2c9d upstream.

Kristian Evensen says: In a project I am involved in, we are running ipsec (Strongswan) on different mt7621-based routers. Each router is configured as an initiator and has around ~30 tunnels to different responders (running on misc. devices). Before the flow cache was removed (kernel 4.9), we got a combined throughput of around 70Mbit/s for all tunnels on one router. However, we recently switched to kernel 4.14 (4.14.48), and the total throughput is somewhere around 57Mbit/s (best-case). I.e., a drop of around 20%. Reverting the flow cache removal restores, as expected, performance levels to that of kernel 4.9.

When pcpu xdst exists, it has to be validated first before it can be used.

A negative hit thus increases cost vs. no-cache.

As number of tunnels increases, hit rate decreases so this pcpu caching isn't a viable strategy.

Furthermore, the xdst cache also needs to run with BH off, so when removing this the bh disable/enable pairs can be removed too.

Kristian tested a 4.14.y backport of this change and reported increased performance:

In our tests, the throughput reduction has been reduced from around -20% to -5%. We also see that the overall throughput is independent of the number of tunnels, while before the throughput was reduced as the number of tunnels increased.

Reported-by: Kristian Evensen kristian.evensen@gmail.com Signed-off-by: Florian Westphal fw@strlen.de Signed-off-by: Steffen Klassert steffen.klassert@secunet.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- include/net/xfrm.h | 1 net/xfrm/xfrm_device.c | 10 --- net/xfrm/xfrm_policy.c | 138 ------------------------------------------------- net/xfrm/xfrm_state.c | 5 - 4 files changed, 3 insertions(+), 151 deletions(-)

--- a/include/net/xfrm.h +++ b/include/net/xfrm.h @@ -323,7 +323,6 @@ int xfrm_policy_register_afinfo(const st void xfrm_policy_unregister_afinfo(const struct xfrm_policy_afinfo *afinfo); void km_policy_notify(struct xfrm_policy *xp, int dir, const struct km_event *c); -void xfrm_policy_cache_flush(void); void km_state_notify(struct xfrm_state *x, const struct km_event *c);

struct xfrm_tmpl; --- a/net/xfrm/xfrm_device.c +++ b/net/xfrm/xfrm_device.c @@ -153,12 +153,6 @@ static int xfrm_dev_register(struct net_ return NOTIFY_DONE; }

-static int xfrm_dev_unregister(struct net_device *dev) -{ - xfrm_policy_cache_flush(); - return NOTIFY_DONE; -} - static int xfrm_dev_feat_change(struct net_device *dev) { if ((dev->features & NETIF_F_HW_ESP) && !dev->xfrmdev_ops) @@ -178,7 +172,6 @@ static int xfrm_dev_down(struct net_devi if (dev->features & NETIF_F_HW_ESP) xfrm_dev_state_flush(dev_net(dev), dev, true);

- xfrm_policy_cache_flush(); return NOTIFY_DONE; }

@@ -190,9 +183,6 @@ static int xfrm_dev_event(struct notifie case NETDEV_REGISTER: return xfrm_dev_register(dev);

- case NETDEV_UNREGISTER: - return xfrm_dev_unregister(dev); - case NETDEV_FEAT_CHANGE: return xfrm_dev_feat_change(dev);

--- a/net/xfrm/xfrm_policy.c +++ b/net/xfrm/xfrm_policy.c @@ -45,8 +45,6 @@ struct xfrm_flo { u8 flags; };

-static DEFINE_PER_CPU(struct xfrm_dst *, xfrm_last_dst); -static struct work_struct *xfrm_pcpu_work __read_mostly; static DEFINE_SPINLOCK(xfrm_policy_afinfo_lock); static struct xfrm_policy_afinfo const __rcu *xfrm_policy_afinfo[AF_INET6 + 1] __read_mostly; @@ -1715,108 +1713,6 @@ static int xfrm_expand_policies(const st

}

-static void xfrm_last_dst_update(struct xfrm_dst *xdst, struct xfrm_dst *old) -{ - this_cpu_write(xfrm_last_dst, xdst); - if (old) - dst_release(&old->u.dst); -} - -static void __xfrm_pcpu_work_fn(void) -{ - struct xfrm_dst *old; - - old = this_cpu_read(xfrm_last_dst); - if (old && !xfrm_bundle_ok(old)) - xfrm_last_dst_update(NULL, old); -} - -static void xfrm_pcpu_work_fn(struct work_struct *work) -{ - local_bh_disable(); - rcu_read_lock(); - __xfrm_pcpu_work_fn(); - rcu_read_unlock(); - local_bh_enable(); -} - -void xfrm_policy_cache_flush(void) -{ - struct xfrm_dst *old; - bool found = 0; - int cpu; - - might_sleep(); - - local_bh_disable(); - rcu_read_lock(); - for_each_possible_cpu(cpu) { - old = per_cpu(xfrm_last_dst, cpu); - if (old && !xfrm_bundle_ok(old)) { - if (smp_processor_id() == cpu) { - __xfrm_pcpu_work_fn(); - continue; - } - found = true; - break; - } - } - - rcu_read_unlock(); - local_bh_enable(); - - if (!found) - return; - - get_online_cpus(); - - for_each_possible_cpu(cpu) { - bool bundle_release; - - rcu_read_lock(); - old = per_cpu(xfrm_last_dst, cpu); - bundle_release = old && !xfrm_bundle_ok(old); - rcu_read_unlock(); - - if (!bundle_release) - continue; - - if (cpu_online(cpu)) { - schedule_work_on(cpu, &xfrm_pcpu_work[cpu]); - continue; - } - - rcu_read_lock(); - old = per_cpu(xfrm_last_dst, cpu); - if (old && !xfrm_bundle_ok(old)) { - per_cpu(xfrm_last_dst, cpu) = NULL; - dst_release(&old->u.dst); - } - rcu_read_unlock(); - } - - put_online_cpus(); -} - -static bool xfrm_xdst_can_reuse(struct xfrm_dst *xdst, - struct xfrm_state * const xfrm[], - int num) -{ - const struct dst_entry *dst = &xdst->u.dst; - int i; - - if (xdst->num_xfrms != num) - return false; - - for (i = 0; i < num; i++) { - if (!dst || dst->xfrm != xfrm[i]) - return false; - dst = dst->child; - } - - return xfrm_bundle_ok(xdst); -} - static struct xfrm_dst * xfrm_resolve_and_create_bundle(struct xfrm_policy **pols, int num_pols, const struct flowi *fl, u16 family, @@ -1824,7 +1720,7 @@ xfrm_resolve_and_create_bundle(struct xf { struct net *net = xp_net(pols[0]); struct xfrm_state *xfrm[XFRM_MAX_DEPTH]; - struct xfrm_dst *xdst, *old; + struct xfrm_dst *xdst; struct dst_entry *dst; int err;

@@ -1839,21 +1735,6 @@ xfrm_resolve_and_create_bundle(struct xf return ERR_PTR(err); }

- xdst = this_cpu_read(xfrm_last_dst); - if (xdst && - xdst->u.dst.dev == dst_orig->dev && - xdst->num_pols == num_pols && - memcmp(xdst->pols, pols, - sizeof(struct xfrm_policy *) * num_pols) == 0 && - xfrm_xdst_can_reuse(xdst, xfrm, err)) { - dst_hold(&xdst->u.dst); - while (err > 0) - xfrm_state_put(xfrm[--err]); - return xdst; - } - - old = xdst; - dst = xfrm_bundle_create(pols[0], xfrm, err, fl, dst_orig); if (IS_ERR(dst)) { XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTBUNDLEGENERROR); @@ -1866,9 +1747,6 @@ xfrm_resolve_and_create_bundle(struct xf memcpy(xdst->pols, pols, sizeof(struct xfrm_policy *) * num_pols); xdst->policy_genid = atomic_read(&pols[0]->genid);

- atomic_set(&xdst->u.dst.__refcnt, 2); - xfrm_last_dst_update(xdst, old); - return xdst; }

@@ -2069,11 +1947,8 @@ xfrm_bundle_lookup(struct net *net, cons if (num_xfrms <= 0) goto make_dummy_bundle;

- local_bh_disable(); xdst = xfrm_resolve_and_create_bundle(pols, num_pols, fl, family, xflo->dst_orig); - local_bh_enable(); - if (IS_ERR(xdst)) { err = PTR_ERR(xdst); if (err != -EAGAIN) @@ -2160,11 +2035,9 @@ struct dst_entry *xfrm_lookup(struct net goto no_transform; }

- local_bh_disable(); xdst = xfrm_resolve_and_create_bundle( pols, num_pols, fl, family, dst_orig); - local_bh_enable();

if (IS_ERR(xdst)) { xfrm_pols_put(pols, num_pols); @@ -2992,15 +2865,6 @@ static struct pernet_operations __net_in

void __init xfrm_init(void) { - int i; - - xfrm_pcpu_work = kmalloc_array(NR_CPUS, sizeof(*xfrm_pcpu_work), - GFP_KERNEL); - BUG_ON(!xfrm_pcpu_work); - - for (i = 0; i < NR_CPUS; i++) - INIT_WORK(&xfrm_pcpu_work[i], xfrm_pcpu_work_fn); - register_pernet_subsys(&xfrm_net_ops); seqcount_init(&xfrm_policy_hash_generation); xfrm_input_init(); --- a/net/xfrm/xfrm_state.c +++ b/net/xfrm/xfrm_state.c @@ -735,10 +735,9 @@ restart: } out: spin_unlock_bh(&net->xfrm.xfrm_state_lock); - if (cnt) { + if (cnt) err = 0; - xfrm_policy_cache_flush(); - } + return err; } EXPORT_SYMBOL(xfrm_state_flush);