diff --git a/Documentation/process/changes.rst b/Documentation/process/changes.rst index ef540865ad22..a9ef00509c9b 100644 --- a/Documentation/process/changes.rst +++ b/Documentation/process/changes.rst @@ -60,6 +60,7 @@ openssl & libcrypto 1.0.0 openssl version bc 1.06.95 bc --version Sphinx\ [#f1]_ 1.7 sphinx-build --version cpio any cpio --version +gtags (optional) 6.6.5 gtags --version ====================== =============== ========================================
.. [#f1] Sphinx is needed only to build the Kernel documentation @@ -174,6 +175,12 @@ You will need openssl to build kernels 3.7 and higher if module signing is enabled. You will also need openssl development packages to build kernels 4.3 and higher.
+gtags / GNU GLOBAL (optional) +----------------------------- + +The kernel build requires GNU GLOBAL version 6.6.5 or later to generate +tag files through ``make gtags``. This is due to its use of the gtags +``-C (--directory)`` flag.
System utilities **************** diff --git a/Makefile b/Makefile index 9f6376cbafeb..bcac81556b56 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ # SPDX-License-Identifier: GPL-2.0 VERSION = 6 PATCHLEVEL = 4 -SUBLEVEL = 1 +SUBLEVEL = 2 EXTRAVERSION = NAME = Hurr durr I'ma ninja sloth
diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c index 8a169bdb4d53..df1386a60d52 100644 --- a/arch/arm64/mm/fault.c +++ b/arch/arm64/mm/fault.c @@ -522,9 +522,7 @@ static int __kprobes do_page_fault(unsigned long far, unsigned long esr, unsigned long vm_flags; unsigned int mm_flags = FAULT_FLAG_DEFAULT; unsigned long addr = untagged_addr(far); -#ifdef CONFIG_PER_VMA_LOCK struct vm_area_struct *vma; -#endif
if (kprobe_page_fault(regs, esr)) return 0; diff --git a/drivers/cxl/core/pci.c b/drivers/cxl/core/pci.c index 67f4ab6daa34..74962b18e3b2 100644 --- a/drivers/cxl/core/pci.c +++ b/drivers/cxl/core/pci.c @@ -308,36 +308,17 @@ static void disable_hdm(void *_cxlhdm) hdm + CXL_HDM_DECODER_CTRL_OFFSET); }
-int devm_cxl_enable_hdm(struct cxl_port *port, struct cxl_hdm *cxlhdm) +static int devm_cxl_enable_hdm(struct device *host, struct cxl_hdm *cxlhdm) { - void __iomem *hdm; + void __iomem *hdm = cxlhdm->regs.hdm_decoder; u32 global_ctrl;
- /* - * If the hdm capability was not mapped there is nothing to enable and - * the caller is responsible for what happens next. For example, - * emulate a passthrough decoder. - */ - if (IS_ERR(cxlhdm)) - return 0; - - hdm = cxlhdm->regs.hdm_decoder; global_ctrl = readl(hdm + CXL_HDM_DECODER_CTRL_OFFSET); - - /* - * If the HDM decoder capability was enabled on entry, skip - * registering disable_hdm() since this decode capability may be - * owned by platform firmware. - */ - if (global_ctrl & CXL_HDM_DECODER_ENABLE) - return 0; - writel(global_ctrl | CXL_HDM_DECODER_ENABLE, hdm + CXL_HDM_DECODER_CTRL_OFFSET);
- return devm_add_action_or_reset(&port->dev, disable_hdm, cxlhdm); + return devm_add_action_or_reset(host, disable_hdm, cxlhdm); } -EXPORT_SYMBOL_NS_GPL(devm_cxl_enable_hdm, CXL);
int cxl_dvsec_rr_decode(struct device *dev, int d, struct cxl_endpoint_dvsec_info *info) @@ -511,7 +492,7 @@ int cxl_hdm_decode_init(struct cxl_dev_state *cxlds, struct cxl_hdm *cxlhdm, if (info->mem_enabled) return 0;
- rc = devm_cxl_enable_hdm(port, cxlhdm); + rc = devm_cxl_enable_hdm(&port->dev, cxlhdm); if (rc) return rc;
diff --git a/drivers/cxl/cxl.h b/drivers/cxl/cxl.h index f93a28538962..044a92d9813e 100644 --- a/drivers/cxl/cxl.h +++ b/drivers/cxl/cxl.h @@ -710,7 +710,6 @@ struct cxl_endpoint_dvsec_info { struct cxl_hdm; struct cxl_hdm *devm_cxl_setup_hdm(struct cxl_port *port, struct cxl_endpoint_dvsec_info *info); -int devm_cxl_enable_hdm(struct cxl_port *port, struct cxl_hdm *cxlhdm); int devm_cxl_enumerate_decoders(struct cxl_hdm *cxlhdm, struct cxl_endpoint_dvsec_info *info); int devm_cxl_add_passthrough_decoder(struct cxl_port *port); diff --git a/drivers/cxl/port.c b/drivers/cxl/port.c index c23b6164e1c0..07c5ac598da1 100644 --- a/drivers/cxl/port.c +++ b/drivers/cxl/port.c @@ -60,17 +60,13 @@ static int discover_region(struct device *dev, void *root) static int cxl_switch_port_probe(struct cxl_port *port) { struct cxl_hdm *cxlhdm; - int rc, nr_dports; - - nr_dports = devm_cxl_port_enumerate_dports(port); - if (nr_dports < 0) - return nr_dports; + int rc;
- cxlhdm = devm_cxl_setup_hdm(port, NULL); - rc = devm_cxl_enable_hdm(port, cxlhdm); - if (rc) + rc = devm_cxl_port_enumerate_dports(port); + if (rc < 0) return rc;
+ cxlhdm = devm_cxl_setup_hdm(port, NULL); if (!IS_ERR(cxlhdm)) return devm_cxl_enumerate_decoders(cxlhdm, NULL);
@@ -79,7 +75,7 @@ static int cxl_switch_port_probe(struct cxl_port *port) return PTR_ERR(cxlhdm); }
- if (nr_dports == 1) { + if (rc == 1) { dev_dbg(&port->dev, "Fallback to passthrough decoder\n"); return devm_cxl_add_passthrough_decoder(port); } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index 3c0310576b3b..5b3a70becbdf 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -2368,6 +2368,10 @@ int amdgpu_vm_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) struct amdgpu_fpriv *fpriv = filp->driver_priv; int r;
+ /* No valid flags defined yet */ + if (args->in.flags) + return -EINVAL; + switch (args->in.op) { case AMDGPU_VM_OP_RESERVE_VMID: /* We only have requirement to reserve vmid from gfxhub */ diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c index 7d5c9c582ed2..0d2fa7f86a54 100644 --- a/drivers/md/dm-ioctl.c +++ b/drivers/md/dm-ioctl.c @@ -1830,30 +1830,36 @@ static ioctl_fn lookup_ioctl(unsigned int cmd, int *ioctl_flags) * As well as checking the version compatibility this always * copies the kernel interface version out. */ -static int check_version(unsigned int cmd, struct dm_ioctl __user *user) +static int check_version(unsigned int cmd, struct dm_ioctl __user *user, + struct dm_ioctl *kernel_params) { - uint32_t version[3]; int r = 0;
- if (copy_from_user(version, user->version, sizeof(version))) + /* Make certain version is first member of dm_ioctl struct */ + BUILD_BUG_ON(offsetof(struct dm_ioctl, version) != 0); + + if (copy_from_user(kernel_params->version, user->version, sizeof(kernel_params->version))) return -EFAULT;
- if ((version[0] != DM_VERSION_MAJOR) || - (version[1] > DM_VERSION_MINOR)) { + if ((kernel_params->version[0] != DM_VERSION_MAJOR) || + (kernel_params->version[1] > DM_VERSION_MINOR)) { DMERR("ioctl interface mismatch: kernel(%u.%u.%u), user(%u.%u.%u), cmd(%d)", DM_VERSION_MAJOR, DM_VERSION_MINOR, DM_VERSION_PATCHLEVEL, - version[0], version[1], version[2], cmd); + kernel_params->version[0], + kernel_params->version[1], + kernel_params->version[2], + cmd); r = -EINVAL; }
/* * Fill in the kernel version. */ - version[0] = DM_VERSION_MAJOR; - version[1] = DM_VERSION_MINOR; - version[2] = DM_VERSION_PATCHLEVEL; - if (copy_to_user(user->version, version, sizeof(version))) + kernel_params->version[0] = DM_VERSION_MAJOR; + kernel_params->version[1] = DM_VERSION_MINOR; + kernel_params->version[2] = DM_VERSION_PATCHLEVEL; + if (copy_to_user(user->version, kernel_params->version, sizeof(kernel_params->version))) return -EFAULT;
return r; @@ -1879,7 +1885,10 @@ static int copy_params(struct dm_ioctl __user *user, struct dm_ioctl *param_kern const size_t minimum_data_size = offsetof(struct dm_ioctl, data); unsigned int noio_flag;
- if (copy_from_user(param_kernel, user, minimum_data_size)) + /* check_version() already copied version from userspace, avoid TOCTOU */ + if (copy_from_user((char *)param_kernel + sizeof(param_kernel->version), + (char __user *)user + sizeof(param_kernel->version), + minimum_data_size - sizeof(param_kernel->version))) return -EFAULT;
if (param_kernel->data_size < minimum_data_size) { @@ -1991,7 +2000,7 @@ static int ctl_ioctl(struct file *file, uint command, struct dm_ioctl __user *us * Check the interface version passed in. This also * writes out the kernel's interface version. */ - r = check_version(cmd, user); + r = check_version(cmd, user, ¶m_kernel); if (r) return r;
diff --git a/drivers/nubus/proc.c b/drivers/nubus/proc.c index 1fd667852271..cd4bd06cf309 100644 --- a/drivers/nubus/proc.c +++ b/drivers/nubus/proc.c @@ -137,6 +137,18 @@ static int nubus_proc_rsrc_show(struct seq_file *m, void *v) return 0; }
+static int nubus_rsrc_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, nubus_proc_rsrc_show, inode); +} + +static const struct proc_ops nubus_rsrc_proc_ops = { + .proc_open = nubus_rsrc_proc_open, + .proc_read = seq_read, + .proc_lseek = seq_lseek, + .proc_release = single_release, +}; + void nubus_proc_add_rsrc_mem(struct proc_dir_entry *procdir, const struct nubus_dirent *ent, unsigned int size) @@ -152,8 +164,8 @@ void nubus_proc_add_rsrc_mem(struct proc_dir_entry *procdir, pded = nubus_proc_alloc_pde_data(nubus_dirptr(ent), size); else pded = NULL; - proc_create_single_data(name, S_IFREG | 0444, procdir, - nubus_proc_rsrc_show, pded); + proc_create_data(name, S_IFREG | 0444, procdir, + &nubus_rsrc_proc_ops, pded); }
void nubus_proc_add_rsrc(struct proc_dir_entry *procdir, @@ -166,9 +178,9 @@ void nubus_proc_add_rsrc(struct proc_dir_entry *procdir, return;
snprintf(name, sizeof(name), "%x", ent->type); - proc_create_single_data(name, S_IFREG | 0444, procdir, - nubus_proc_rsrc_show, - nubus_proc_alloc_pde_data(data, 0)); + proc_create_data(name, S_IFREG | 0444, procdir, + &nubus_rsrc_proc_ops, + nubus_proc_alloc_pde_data(data, 0)); }
/* diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index 052a611081ec..a05350a4e49c 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -1043,6 +1043,16 @@ bool acpi_pci_bridge_d3(struct pci_dev *dev) return false; }
+static void acpi_pci_config_space_access(struct pci_dev *dev, bool enable) +{ + int val = enable ? ACPI_REG_CONNECT : ACPI_REG_DISCONNECT; + int ret = acpi_evaluate_reg(ACPI_HANDLE(&dev->dev), + ACPI_ADR_SPACE_PCI_CONFIG, val); + if (ret) + pci_dbg(dev, "ACPI _REG %s evaluation failed (%d)\n", + enable ? "connect" : "disconnect", ret); +} + int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state) { struct acpi_device *adev = ACPI_COMPANION(&dev->dev); @@ -1053,32 +1063,49 @@ int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state) [PCI_D3hot] = ACPI_STATE_D3_HOT, [PCI_D3cold] = ACPI_STATE_D3_COLD, }; - int error = -EINVAL; + int error;
/* If the ACPI device has _EJ0, ignore the device */ if (!adev || acpi_has_method(adev->handle, "_EJ0")) return -ENODEV;
switch (state) { - case PCI_D3cold: - if (dev_pm_qos_flags(&dev->dev, PM_QOS_FLAG_NO_POWER_OFF) == - PM_QOS_FLAGS_ALL) { - error = -EBUSY; - break; - } - fallthrough; case PCI_D0: case PCI_D1: case PCI_D2: case PCI_D3hot: - error = acpi_device_set_power(adev, state_conv[state]); + case PCI_D3cold: + break; + default: + return -EINVAL; + } + + if (state == PCI_D3cold) { + if (dev_pm_qos_flags(&dev->dev, PM_QOS_FLAG_NO_POWER_OFF) == + PM_QOS_FLAGS_ALL) + return -EBUSY; + + /* Notify AML lack of PCI config space availability */ + acpi_pci_config_space_access(dev, false); }
- if (!error) - pci_dbg(dev, "power state changed by ACPI to %s\n", - acpi_power_state_string(adev->power.state)); + error = acpi_device_set_power(adev, state_conv[state]); + if (error) + return error;
- return error; + pci_dbg(dev, "power state changed by ACPI to %s\n", + acpi_power_state_string(adev->power.state)); + + /* + * Notify AML of PCI config space availability. Config space is + * accessible in all states except D3cold; the only transitions + * that change availability are transitions to D3cold and from + * D3cold to D0. + */ + if (state == PCI_D0) + acpi_pci_config_space_access(dev, true); + + return 0; }
pci_power_t acpi_pci_get_power_state(struct pci_dev *dev) diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index ecfdfb2529a3..581201818ed8 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -821,7 +821,6 @@ static long hugetlbfs_fallocate(struct file *file, int mode, loff_t offset, */ struct folio *folio; unsigned long addr; - bool present;
cond_resched();
@@ -845,10 +844,9 @@ static long hugetlbfs_fallocate(struct file *file, int mode, loff_t offset, mutex_lock(&hugetlb_fault_mutex_table[hash]);
/* See if already present in mapping to avoid alloc/free */ - rcu_read_lock(); - present = page_cache_next_miss(mapping, index, 1) != index; - rcu_read_unlock(); - if (present) { + folio = filemap_get_folio(mapping, index); + if (!IS_ERR(folio)) { + folio_put(folio); mutex_unlock(&hugetlb_fault_mutex_table[hash]); hugetlb_drop_vma_policy(&pseudo_vma); continue; diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index a910b9a638c5..8172dd4135a1 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -845,7 +845,7 @@ int nfs_getattr(struct mnt_idmap *idmap, const struct path *path,
request_mask &= STATX_TYPE | STATX_MODE | STATX_NLINK | STATX_UID | STATX_GID | STATX_ATIME | STATX_MTIME | STATX_CTIME | - STATX_INO | STATX_SIZE | STATX_BLOCKS | STATX_BTIME | + STATX_INO | STATX_SIZE | STATX_BLOCKS | STATX_CHANGE_COOKIE;
if ((query_flags & AT_STATX_DONT_SYNC) && !force_sync) { diff --git a/include/linux/mm.h b/include/linux/mm.h index 6cbcc55a80b0..9e10485f37e7 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -377,7 +377,7 @@ extern unsigned int kobjsize(const void *objp); #endif /* CONFIG_HAVE_ARCH_USERFAULTFD_MINOR */
/* Bits set in the VMA until the stack is in its final location */ -#define VM_STACK_INCOMPLETE_SETUP (VM_RAND_READ | VM_SEQ_READ) +#define VM_STACK_INCOMPLETE_SETUP (VM_RAND_READ | VM_SEQ_READ | VM_STACK_EARLY)
#define TASK_EXEC ((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0)
@@ -399,8 +399,10 @@ extern unsigned int kobjsize(const void *objp);
#ifdef CONFIG_STACK_GROWSUP #define VM_STACK VM_GROWSUP +#define VM_STACK_EARLY VM_GROWSDOWN #else #define VM_STACK VM_GROWSDOWN +#define VM_STACK_EARLY 0 #endif
#define VM_STACK_FLAGS (VM_STACK | VM_STACK_DEFAULT_FLAGS | VM_ACCOUNT) diff --git a/mm/hugetlb.c b/mm/hugetlb.c index f154019e6b84..f791076da157 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -5731,13 +5731,13 @@ static bool hugetlbfs_pagecache_present(struct hstate *h, { struct address_space *mapping = vma->vm_file->f_mapping; pgoff_t idx = vma_hugecache_offset(h, vma, address); - bool present; - - rcu_read_lock(); - present = page_cache_next_miss(mapping, idx, 1) != idx; - rcu_read_unlock(); + struct folio *folio;
- return present; + folio = filemap_get_folio(mapping, idx); + if (IS_ERR(folio)) + return false; + folio_put(folio); + return true; }
int hugetlb_add_to_page_cache(struct folio *folio, struct address_space *mapping, diff --git a/mm/nommu.c b/mm/nommu.c index fdc392735ec6..c072a660ec2c 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -637,8 +637,13 @@ EXPORT_SYMBOL(find_vma); struct vm_area_struct *lock_mm_and_find_vma(struct mm_struct *mm, unsigned long addr, struct pt_regs *regs) { + struct vm_area_struct *vma; + mmap_read_lock(mm); - return vma_lookup(mm, addr); + vma = vma_lookup(mm, addr); + if (!vma) + mmap_read_unlock(mm); + return vma; }
/* diff --git a/scripts/tags.sh b/scripts/tags.sh index ea31640b2671..f6b3c7cd39c7 100755 --- a/scripts/tags.sh +++ b/scripts/tags.sh @@ -32,6 +32,13 @@ else tree=${srctree}/ fi
+# gtags(1) refuses to index any file outside of its current working dir. +# If gtags indexing is requested and the build output directory is not +# the kernel source tree, index all files in absolute-path form. +if [[ "$1" == "gtags" && -n "${tree}" ]]; then + tree=$(realpath "$tree")/ +fi + # Detect if ALLSOURCE_ARCHS is set. If not, we assume SRCARCH if [ "${ALLSOURCE_ARCHS}" = "" ]; then ALLSOURCE_ARCHS=${SRCARCH} @@ -131,7 +138,7 @@ docscope()
dogtags() { - all_target_sources | gtags -i -f - + all_target_sources | gtags -i -C "${tree:-.}" -f - "$PWD" }
# Basic regular expressions with an optional /kind-spec/ for ctags and diff --git a/tools/include/nolibc/arch-x86_64.h b/tools/include/nolibc/arch-x86_64.h index f7f2a11d4c3b..f52725f51fca 100644 --- a/tools/include/nolibc/arch-x86_64.h +++ b/tools/include/nolibc/arch-x86_64.h @@ -190,7 +190,7 @@ const unsigned long *_auxv __attribute__((weak)); * 2) The deepest stack frame should be zero (the %rbp). * */ -void __attribute__((weak,noreturn,optimize("omit-frame-pointer"))) _start(void) +void __attribute__((weak,noreturn,optimize("omit-frame-pointer"),no_stack_protector)) _start(void) { __asm__ volatile ( #ifdef NOLIBC_STACKPROTECTOR diff --git a/tools/testing/cxl/Kbuild b/tools/testing/cxl/Kbuild index 6f9347ade82c..fba7bec96acd 100644 --- a/tools/testing/cxl/Kbuild +++ b/tools/testing/cxl/Kbuild @@ -6,7 +6,6 @@ ldflags-y += --wrap=acpi_pci_find_root ldflags-y += --wrap=nvdimm_bus_register ldflags-y += --wrap=devm_cxl_port_enumerate_dports ldflags-y += --wrap=devm_cxl_setup_hdm -ldflags-y += --wrap=devm_cxl_enable_hdm ldflags-y += --wrap=devm_cxl_add_passthrough_decoder ldflags-y += --wrap=devm_cxl_enumerate_decoders ldflags-y += --wrap=cxl_await_media_ready diff --git a/tools/testing/cxl/test/mock.c b/tools/testing/cxl/test/mock.c index 284416527644..de3933a776fd 100644 --- a/tools/testing/cxl/test/mock.c +++ b/tools/testing/cxl/test/mock.c @@ -149,21 +149,6 @@ struct cxl_hdm *__wrap_devm_cxl_setup_hdm(struct cxl_port *port, } EXPORT_SYMBOL_NS_GPL(__wrap_devm_cxl_setup_hdm, CXL);
-int __wrap_devm_cxl_enable_hdm(struct cxl_port *port, struct cxl_hdm *cxlhdm) -{ - int index, rc; - struct cxl_mock_ops *ops = get_cxl_mock_ops(&index); - - if (ops && ops->is_mock_port(port->uport)) - rc = 0; - else - rc = devm_cxl_enable_hdm(port, cxlhdm); - put_cxl_mock_ops(index); - - return rc; -} -EXPORT_SYMBOL_NS_GPL(__wrap_devm_cxl_enable_hdm, CXL); - int __wrap_devm_cxl_add_passthrough_decoder(struct cxl_port *port) { int rc, index;