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1,464,522 commits
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Krzysztof Wilczyński
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385ec1d407 |
alpha/PCI: Compute legacy size in pci_mmap_legacy_page_range()
Currently, pci_mmap_legacy_page_range() reads the legacy resource size from bus->legacy_mem->size or bus->legacy_io->size. This couples the mmap bounds check to the struct pci_bus fields that will be removed when legacy attributes are converted to static definitions. Compute the size directly using PCI_LEGACY_MEM_SIZE (0x100000) and PCI_LEGACY_IO_SIZE (0xffff) macros, and shift by 5 bits for sparse systems. Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Tested-by: Magnus Lindholm <linmag7@gmail.com> Tested-by: Shivaprasad G Bhat <sbhat@linux.ibm.com> Acked-by: Magnus Lindholm <linmag7@gmail.com> Link: https://patch.msgid.link/20260508043543.217179-21-kwilczynski@kernel.org |
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Krzysztof Wilczyński
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e52e497e37 |
PCI: Add macros for legacy I/O and memory address space sizes
Add defines for the standard PCI legacy address space sizes, replacing the raw literals used by the legacy sysfs attributes. Then, replace open-coded values with the newly added macros. No functional changes intended. Suggested-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Tested-by: Shivaprasad G Bhat <sbhat@linux.ibm.com> Link: https://patch.msgid.link/20260508043543.217179-20-kwilczynski@kernel.org |
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Krzysztof Wilczyński
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b45bebbfa0 |
PCI/sysfs: Remove pci_{create,remove}_sysfs_dev_files()
Currently, pci_create_sysfs_dev_files() and pci_remove_sysfs_dev_files() are no-op stubs. With both the generic and Alpha resource files now handled by static attribute groups, no platform needs dynamic per-device sysfs file creation. Remove both functions, their declarations, and the call sites in pci_bus_add_device() and pci_stop_dev(). Remove __weak pci_create_resource_files() and pci_remove_resource_files() stubs and their declarations in pci.h, as no architecture overrides them anymore. Remove the res_attr[] and res_attr_wc[] fields from struct pci_dev which were used to track dynamically allocated resource attributes. Finally, simplify pci_sysfs_init() to only handle legacy file creation under HAVE_PCI_LEGACY, removing the per-device loop and the HAVE_PCI_SYSFS_INIT helper added earlier. Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Tested-by: Shivaprasad G Bhat <sbhat@linux.ibm.com> Link: https://patch.msgid.link/20260508043543.217179-19-kwilczynski@kernel.org |
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Krzysztof Wilczyński
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b7a57ffd4d |
alpha/PCI: Convert resource files to static attributes
Previously, Alpha's PCI resource files (resourceN, resourceN_sparse, resourceN_dense) were dynamically created by pci_create_resource_files(), which overrides the generic __weak implementation. The previous code allocated bin_attributes at runtime and managed them via the res_attr[] and res_attr_wc[] fields in struct pci_dev. Convert to static const attributes with three attribute groups (plain, sparse, dense), each with an .is_bin_visible() callback that checks resource length, has_sparse(), and sparse_mem_mmap_fits(). A .bin_size() callback provides the resource size to the kernfs node, with the sparse variant shifting by 5 bits for byte-level addressing. Register the groups via ARCH_PCI_DEV_GROUPS so the driver model handles creation and removal automatically. Use the new pci_resource_is_mem() helper for the type check, replacing the open-coded bitwise flag test. Finally, remove pci_create_resource_files(), pci_remove_resource_files(), pci_create_attr(), and pci_create_one_attr() which are no longer needed. Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Tested-by: Magnus Lindholm <linmag7@gmail.com> Tested-by: Shivaprasad G Bhat <sbhat@linux.ibm.com> Acked-by: Magnus Lindholm <linmag7@gmail.com> Link: https://patch.msgid.link/20260508043543.217179-18-kwilczynski@kernel.org |
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Krzysztof Wilczyński
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5980dcbc4b |
alpha/PCI: Add static PCI resource attribute macros
Add macros for declaring static binary attributes for Alpha's PCI resource files: - pci_dev_resource_attr(), for dense/BWX systems (mmap dense) - pci_dev_resource_sparse_attr(), for sparse systems (mmap sparse) - pci_dev_resource_dense_attr(), for dense companion files (mmap dense) Each macro creates a const bin_attribute with the BAR index stored in the .private property and the appropriate .mmap() callback. Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Tested-by: Magnus Lindholm <linmag7@gmail.com> Tested-by: Shivaprasad G Bhat <sbhat@linux.ibm.com> Acked-by: Magnus Lindholm <linmag7@gmail.com> Link: https://patch.msgid.link/20260508043543.217179-17-kwilczynski@kernel.org |
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Krzysztof Wilczyński
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29840080f5 |
alpha/PCI: Remove WARN from __pci_mmap_fits() and __legacy_mmap_fits()
Remove the WARN() that fires when userspace attempts to mmap beyond the BAR
bounds. The check still returns 0 to reject the mapping, but the warning
is excessive for normal operation.
A similar warning was removed from the PCI core in the commit
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Krzysztof Wilczyński
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802a3b3f47 |
alpha/PCI: Fix __pci_mmap_fits() overflow for zero-length BARs
Currently, __pci_mmap_fits() computes the BAR size using
"pci_resource_len() - 1", which wraps to a large value when the BAR length
is zero, causing the bounds check to incorrectly succeed.
Add an early return for empty resources.
Fixes:
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Krzysztof Wilczyński
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30d01a8c3a |
alpha/PCI: Use PCI resource accessor macros
Replace direct pdev->resource[] accesses with pci_resource_n(), and open-coded res->flags type checks with pci_resource_is_mem() and pci_resource_start() helpers. While at it, move the pci_resource_n() call directly into pcibios_resource_to_bus() and drop the local struct resource pointer. No functional changes intended. Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Tested-by: Magnus Lindholm <linmag7@gmail.com> Tested-by: Shivaprasad G Bhat <sbhat@linux.ibm.com> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Acked-by: Magnus Lindholm <linmag7@gmail.com> Link: https://patch.msgid.link/20260508043543.217179-14-kwilczynski@kernel.org |
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Krzysztof Wilczyński
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7d9779cb10 |
alpha/PCI: Use BAR index in sysfs attr->private instead of resource pointer
Currently, Alpha's pci_create_one_attr() stores a resource pointer in
attr->private, and pci_mmap_resource() loops through all BARs to find
the matching index.
Store the BAR index directly in attr->private and retrieve the resource via
pci_resource_n(). This eliminates the loop and aligns with the convention
used by the generic PCI sysfs code.
The PCI core change was first added in the commit
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Krzysztof Wilczyński
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78a228f0aa |
alpha/PCI: Add security_locked_down() check to pci_mmap_resource()
Currently, Alpha's pci_mmap_resource() does not check security_locked_down(LOCKDOWN_PCI_ACCESS) before allowing userspace to mmap PCI BARs. The generic version has had this check since commit |
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Krzysztof Wilczyński
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4eee7eef23 |
PCI/sysfs: Limit pci_sysfs_init() late_initcall compile scope
Currently, pci_sysfs_init() and sysfs_initialized compile unconditionally,
even on platforms where static attribute groups handle all resource file
creation.
Place them behind a new HAVE_PCI_SYSFS_INIT macro, especially as the
late_initcall is only needed when:
- HAVE_PCI_LEGACY is set, to iterate buses and create legacy I/O and
memory files.
- Neither HAVE_PCI_MMAP nor ARCH_GENERIC_PCI_MMAP_RESOURCE is set, to
iterate devices and create resource files via the __weak
pci_create_resource_files() stub override (this is how the Alpha
architecture handles this currently).
On most systems both conditions are false and the entire late_initcall
compiles away.
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Shivaprasad G Bhat <sbhat@linux.ibm.com>
Link: https://patch.msgid.link/20260508043543.217179-11-kwilczynski@kernel.org
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Krzysztof Wilczyński
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2c31a9675f |
PCI/sysfs: Add stubs for pci_{create,remove}_sysfs_dev_files()
On platforms with HAVE_PCI_MMAP or ARCH_GENERIC_PCI_MMAP_RESOURCE, resource files are now handled by static attribute groups registered via pci_dev_groups[]. Stub out the pci_create_sysfs_dev_files() and pci_remove_sysfs_dev_files(), as the dynamic resource file creation is no longer needed. Also, simplify pci_sysfs_init() on these platforms to only iterate buses for legacy attributes creation, skipping the per-device loop. Move the __weak stubs for pci_create_resource_files() and pci_remove_resource_files() into the #else branch since only platforms without HAVE_PCI_MMAP (such as Alpha architecture) still need them. Guard the res_attr[] and res_attr_wc[] fields in struct pci_dev the same way. Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Tested-by: Shivaprasad G Bhat <sbhat@linux.ibm.com> Link: https://patch.msgid.link/20260508043543.217179-10-kwilczynski@kernel.org |
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Krzysztof Wilczyński
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cf616e0b18 |
PCI/sysfs: Warn about BAR resize failure in __resource_resize_store()
Add a pci_warn() to __resource_resize_store(), so that BAR resize failures are visible to the user, which can help troubleshoot any potential resource resize issues. While at it, rename the resource_resize_is_visible() to resource_resize_attr_is_visible() along with the corresponding group variable to align with the naming convention used by the resource attribute groups. Also, change the order of pci_dev_groups[] such that the resize group is now located alongside the other resource groups. Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Tested-by: Shivaprasad G Bhat <sbhat@linux.ibm.com> Link: https://patch.msgid.link/20260508043543.217179-9-kwilczynski@kernel.org |
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Krzysztof Wilczyński
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ca617c60af |
PCI/sysfs: Convert PCI resource files to static attributes
Currently, the PCI resource files (resourceN, resourceN_wc) are dynamically
created by pci_create_sysfs_dev_files(), called from both
pci_bus_add_device() and the pci_sysfs_init() late_initcall, with only a
sysfs_initialized flag for synchronisation. This has caused warnings and
boot panics when both paths race on the same device, e.g.:
sysfs: cannot create duplicate filename '/devices/pci0000:3c/0000:3c:01.0/0000:3e:00.2/resource2'
This is especially likely on Devicetree-based platforms, where the PCI host
controllers are platform drivers that probe via the driver model, which can
happen during or after the late_initcall. As such, pci_bus_add_device()
and pci_sysfs_init() are more likely to overlap.
Convert to static const attributes with three attribute groups (I/O, UC,
WC), each with an .is_bin_visible() callback that checks resource flags,
BAR length, and non_mappable_bars. A .bin_size() callback provides
pci_resource_len() to the kernfs node for correct stat and lseek behaviour.
As part of this conversion:
- Rename pci_read_resource_io() and pci_write_resource_io() to
pci_read_resource() and pci_write_resource() since the callbacks are no
longer I/O-specific in the static attribute context.
- Update __resource_resize_store() to use sysfs_create_groups() and
sysfs_remove_groups(), which re-evaluates visibility and runs the
.bin_size() callback for the static resource attribute groups.
- Remove pci_create_resource_files(), pci_remove_resource_files(), and
pci_create_attr() which are no longer needed.
- Move the __weak stubs outside the #if guard so they remain available
for callers converted in subsequent commits.
Platforms that do not define the HAVE_PCI_MMAP macro or the
ARCH_GENERIC_PCI_MMAP_RESOURCE macro, such as Alpha architecture,
continue using their platform-specific resource file creation.
For reference, the dynamic creation dates back to the pre-Git era:
https://git.kernel.org/pub/scm/linux/kernel/git/tglx/history.git/commit/drivers/pci/pci-sysfs.c?id=42298be0eeb5ae98453b3374c36161b05a46c5dc
The write-combine support was added in commit
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Krzysztof Wilczyński
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8857f6578b |
PCI/proc: Fix race between pci_proc_init() and pci_bus_add_device()
pci_proc_attach_device() creates procfs entries for PCI devices and is called from pci_bus_add_device(). It lazily creates the per-bus procfs directory (bus->procdir) via proc_mkdir() on first use, and returns early if proc_initialized is not yet set. On x86 with ACPI, PCI enumeration occurs at subsys_initcall, before pci_proc_init() sets proc_initialized at device_initcall. The for_each_pci_dev() loop in pci_proc_init() then creates procfs entries for these already-enumerated devices, but runs without holding pci_rescan_remove_lock. On ARM64 with devicetree, PCI host bridges probe at device_initcall. With async probing enabled, pci_bus_add_device() can run concurrently with pci_proc_init(), and both may call pci_proc_attach_device() for the same device or for different devices on the same bus. As pci_host_probe() holds pci_rescan_remove_lock while pci_proc_init() does not, there is no serialisation between the two paths. When two threads concurrently call pci_proc_attach_device() for devices on the same bus, both observe bus->procdir as NULL and both call proc_mkdir(). The proc filesystem serialises directory creation internally, so only one caller succeeds. The other results in a warning like: proc_dir_entry '000c:00/00.0' already registered The caller receives NULL (duplicate entry) and unconditionally stores it to bus->procdir, corrupting the valid pointer set by the first caller. Serialise access to proc_initialized, proc_bus_pci_dir, bus->procdir and dev->procent with a new mutex local to drivers/pci/proc.c, and store the created entries to bus->procdir and dev->procent only on success, so a failed creation can never overwrite a valid pointer. Additionally, wrap the for_each_pci_dev() loop in pci_proc_init() with pci_lock_rescan_remove() to serialise against concurrent PCI bus operations, add an early return in pci_proc_attach_device() when dev->procent is already set to make the function idempotent, and clear bus->procdir in pci_proc_detach_bus() to prevent use of a dangling pointer after proc_remove(). Reported-by: Shuan He <heshuan@bytedance.com> Closes: https://lore.kernel.org/linux-pci/20250702155112.40124-2-heshuan@bytedance.com/ Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/20260611150543.511422-1-kwilczynski@kernel.org |
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Hans Zhang
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2b0d1a605e |
PCI: rzg3s-host: Use common pci_host_common_link_train_delay() helper
Replace the unconditional msleep(100) with the common helper pci_host_common_link_train_delay(). The helper only waits when max_link_speed > 2, as required by PCIe r6.0 sec 6.6.1. This avoids unnecessary delay for Gen1/Gen2 links while retaining the mandatory 100 ms for higher speeds. Signed-off-by: Hans Zhang <18255117159@163.com> Signed-off-by: Manivannan Sadhasivam <mani@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://patch.msgid.link/20260518004246.1384532-8-18255117159@163.com |
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Hans Zhang
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d24e3fab6e |
PCI: mediatek-gen3: Add 100 ms delay after link up
The MediaTek Gen3 PCIe host driver lacks the required 100 ms delay after link training completes for speeds > 5.0 GT/s, as specified in PCIe r6.0 sec 6.6.1. The driver already stores max_link_speed (from the device tree). After mtk_pcie_startup_port() successfully brings up the link, call pci_host_common_link_train_delay() to comply with the specification. Signed-off-by: Hans Zhang <18255117159@163.com> Signed-off-by: Manivannan Sadhasivam <mani@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://patch.msgid.link/20260518004246.1384532-7-18255117159@163.com |
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Hans Zhang
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6bba1de54c |
PCI: aardvark: Add 100 ms delay after link training
The Aardvark PCIe controller driver waits for the link to come up but does not implement the mandatory 100 ms delay after link training completes for speeds greater than 5.0 GT/s (PCIe r6.0 sec 6.6.1). The driver already maintains a 'link_gen' field that holds the negotiated link speed. Use it together with pci_host_common_link_train_delay() to insert the required delay immediately after confirming that the link is up. Signed-off-by: Hans Zhang <18255117159@163.com> Signed-off-by: Manivannan Sadhasivam <mani@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://patch.msgid.link/20260518004246.1384532-6-18255117159@163.com |
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Hans Zhang
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0a46957df4 |
PCI: dwc: Use common pci_host_common_link_train_delay() helper
The DWC driver already implements the 100 ms delay required by PCIe r6.0 sec 6.6.1 by checking pci->max_link_speed and calling msleep(100). Replace the open-coded msleep() with the new common helper pci_host_common_link_train_delay() to reduce code duplication and improve maintainability. No functional change intended. Signed-off-by: Hans Zhang <18255117159@163.com> Signed-off-by: Manivannan Sadhasivam <mani@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://patch.msgid.link/20260518004246.1384532-5-18255117159@163.com |
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Hans Zhang
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57d3400df0 |
PCI: cadence-hpa: Add post-link delay
The Cadence HPA (High Performance Architecture IP) specific link setup function cdns_pcie_hpa_host_link_setup() waits for the link to come up but does not implement the required 100 ms delay after link training completes for speeds > 5.0 GT/s (PCIe r6.0 sec 6.6.1). Add a call to pci_host_common_link_train_delay() immediately after the link is confirmed to be up, using the max_link_speed field. Also, in the HPA host setup function, read the device tree property "max-link-speed" to initialize max_link_speed if not already set by a glue driver. This ensures compliance for HPA-based platforms. Signed-off-by: Hans Zhang <18255117159@163.com> Signed-off-by: Manivannan Sadhasivam <mani@kernel.org> [bhelgaas: driver tag "cadence: HPA:" -> "cadence-hpa:"] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://patch.msgid.link/20260518004246.1384532-4-18255117159@163.com |
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Linus Torvalds
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a1a8bab741 |
mm.git review status for linus..mm-stable
Everything: Total patches: 118 Reviews/patch: 1.57 Reviewed rate: 62% Excluding DAMON: Total patches: 117 Reviews/patch: 1.58 Reviewed rate: 63% Excluding DAMON and selftests: Total patches: 42 Reviews/patch: 3.14 Reviewed rate: 92% Patch series in this merge: - The 14 patch series "khugepaged: add mTHP collapse support" from Nico Pache provides khugepaged with the capability to collapse anonymous memory regions to mTHPs. - The 14 patch series "Remove CONFIG_READ_ONLY_THP_FOR_FS and enable file THP for writable files" from Zi Yan ends up removing the READ_ONLY_THP_FOR_FS check in file_thp_enabled(), so that khugepaged and MADV_COLLAPSE can run on FSes with PMD THP pagecache support even without READ_ONLY_THP_FOR_FS enabled. - The 55 patch series "make MM selftests more CI friendly" from Mike Rapoport provides general fixes and cleanups to the MM selftests. It also moves more MM selftests uder the kselftest framework, making them more amenable to ongoing CI testing. - The 13 patch series "selftests/mm: fix failures and robustness improvements" from Sayali Patil fixes several issues in MM selftests which were revealed by powerpc 64k pagesize. - The 3 patch series "selftests/mm: assorted fixes for hmm-tests" from Sayali Patil fixes more 64k pagesize issues in the MM selftests. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCajqsgwAKCRDdBJ7gKXxA jlNoAP0bM125zRNpqy13hUYfofQQg8lC9k7cfEHqVtvD/dpaKgD/Xbjd8AUGbwjs qoj3nNmUOfGFPubPZsU6YSFyVsYfzwM= =T44n -----END PGP SIGNATURE----- Merge tag 'mm-stable-2026-06-23-08-55' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull more MM updates from Andrew Morton: - "khugepaged: add mTHP collapse support" (Nico Pache) Provide khugepaged with the capability to collapse anonymous memory regions to mTHPs - "Remove CONFIG_READ_ONLY_THP_FOR_FS and enable file THP for writable files" (Zi Yan) Remove the READ_ONLY_THP_FOR_FS check in file_thp_enabled(), so that khugepaged and MADV_COLLAPSE can run on filesystems with PMD THP pagecache support even without READ_ONLY_THP_FOR_FS enabled - "make MM selftests more CI friendly" (Mike Rapoport) General fixes and cleanups to the MM selftests. Also move more MM selftests under the kselftest framework, making them more amenable to ongoing CI testing - "selftests/mm: fix failures and robustness improvements" and "selftests/mm: assorted fixes for hmm-tests" (Sayali Patil) Fix several issues in MM selftests which were revealed by powerpc 64k pagesize * tag 'mm-stable-2026-06-23-08-55' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (118 commits) Revert "mm: limit filemap_fault readahead to VMA boundaries" mm/vmscan: pass NULL to trace vmscan node reclaim mm: use mapping_mapped to simplify the code selftests/mm: fix exclusive_cow test fork() handling selftests/mm: remove hardcoded THP sizing assumptions in hmm tests selftests/mm: allow PUD-level entries in compound testcase of hmm tests mm/gup_test: reject wrapped user ranges mm/page_frag: reject invalid CPUs in page_frag_test mm/damon/core: always put unsuccessfully committed target pids mm: page_isolation: avoid unsafe folio reads while scanning compound pages mm/shrinker: do not hold RCU lock in shrinker_debugfs_count_show() selftests: mm: fix and speedup "droppable" test mm: merge writeout into pageout MAINTAINERS: add Hao Ge as reviewer for codetag and alloc_tag selftests/mm: clarify alternate unmapping in compaction_test selftests/mm: move hwpoison setup into run_test() and silence modprobe output for memory-failure category selftests/mm: skip uffd-stress test when nr_pages_per_cpu is zero selftests/mm: skip uffd-wp-mremap if UFFD write-protect is unsupported selftests/mm: ensure destination is hugetlb-backed in hugetlb-mremap selftest/mm: register existing mapping with userfaultfd in hugetlb-mremap ... |
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Linus Torvalds
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05d2a3da15 |
perf tools changes for v7.2:
- Introduce 'perf inject --aslr' to remap ASLR-randomized addresses in perf.data files, enabling reproducible analysis across runs with different address space layouts. - Refactor evsel out of sample processing paths: store evsel in struct perf_sample and remove the redundant evsel parameter from tool APIs, tracepoint handlers, hist entry iterators, and db-export, simplifying the entire tool callback chain. - Switch architecture detection from string-based perf_env__arch() comparisons to the numeric ELF e_machine field across the codebase (capstone, print_insn, c2c, lock-contention, sort, sample-raw, machine, header), making cross-analysis more robust. - Overhaul ARM CoreSight ETM tests: add deterministic and named_threads workloads, speed up basic and disassembly tests, add process attribution and concurrent threads tests, remove unused workloads and duplicate tests, queue context packets for the frontend decoder. - Add ARM SPE IMPDEF event decoding for Arm Neoverse N1, store MIDR in arm_spe_pkt for per-CPU event mapping, handle missing CPU IDs gracefully. - Refactor libunwind support: remove the libunwind-local backend, make register reading cross-platform, add RISC-V libunwind support, allow dynamic selection between libdw and libunwind unwinding at runtime. - Extensive hardening of perf.data parsing against crafted files: add bounds checks and byte-swap validation for session records, feature sections, header attributes, BPF metadata, auxtrace errors, compressed events, CPU maps, build ID notes, and ELF program headers. Add minimum event size validation and file offset diagnostics. - Fix libdw API contract violations across dwarf-aux, libdw, probe-finder, annotate-data, and debuginfo subsystems. Fix callchain parent update in ORDER_CALLER mode, support DWARF line 0 in inline lists, handle multiple address spaces in callchains. - Fix numerous 'perf sched' bugs: thread reference leaks, memory leaks, heap overflows with cross-machine recordings, NULL dereferences, replace BUG_ON assertions with graceful error handling, bounds-check CPU indices, fix SIGCHLD vs pause() races in sched stats. - Overhaul the build system: move BPF skeleton generation out of Makefile.perf into bpf_skel.mak, decouple pmu-events from the prepare target, make beauty generated C code standalone .o files, compile BPF skeletons with -mcpu=v3, fix continuous rebuilds, various cleanups. - Add 'perf test' JUnit XML reporting with -j/--junit option, split monolithic test suites into sub-tests, add summary reporting, refactor parallel poll loop, fix test failures on musl-based systems. - Fix 'perf c2c' memory leaks in hist entry and format list handling, use-after-free in error paths, bounds-check CPU and node IDs. - Fix 'perf bpf' metadata leaks on duplicate insert and alloc failure, bounds-check array offsets, validate event sizes and func_info fields, add NULL checks. - Fix hwmon PMU: off-by-one null termination on sysfs reads, strlcpy buffer overflow in parse_hwmon_filename(), fd 0 check, empty label reads, scnprintf usage. - Fix symbols subsystem: bounds-check ELF and sysfs build ID note iteration, validate p_filesz, fix 32-bit ELF bswap error, fix signed overflow in size checks, bounds-check .gnu_debuglink section. - Fix tools lib api: null termination in filename__read_int/ull(), uninitialized stack data in filename__write_int(), snprintf truncation in mount_overload(). - Replace libbabeltrace with babeltrace2-ctf-writer for CTF conversion in 'perf data'. - Add RISC-V SDT argument parsing for static tracepoints. - Add 'perf trace --show-cpu' option to display CPU id. - Add 'perf bench sched pipe --write-size' option. - Add a perf-specific .clang-format that overrides some kernel style behaviors. - Update Intel vendor events for Alder Lake, Arrow Lake, Clearwater Forest, Emerald Rapids, Granite Rapids, Grand Ridge, Lunar Lake, Meteor Lake, Panther Lake, Sapphire Rapids, Sierra Forest. - Add IOMMU metrics for AMD and Intel. - Fix AMD event: switch l2_itlb_misses to bp_l1_tlb_miss_l2_tlb_miss.all. - Add AMD IBS improvements: decode Streaming-store and Remote-Socket flags, suppress bogus fields on Zen4+, skip privilege test on Zen6+. - Fix 'perf lock contention' SIGCHLD vs pause() race, allow 'mmap_lock' in -L filter, enable end-timestamp for cgroup aggregation, fix non-atomic data updates. - Fix 'perf stat' false NMI watchdog warning in aggregation modes, bounds-check CPU index in topology callbacks, add aggr_nr metric parser support for uncore scaling. - Fix 'perf timechart' memory leaks, CPU bounds checking, use-after-free on corrupted callchains. - Fix 'perf inject' itrace branch stack synthesis, fix synthesized sample size with branch stacks. - Fix DSO heap overflow on decompressed paths, uninitialized pathname on fallback, set proper error codes. - Fix various snprintf/scnprintf usages to prevent buffer overflows and truncation across the codebase. - Fix off-by-one stack buffer overflow in kallsyms__parse(). - Fix 'perf kwork' memory management, address sanitizer issues, bounds check work->cpu. - Fix 'perf tpebs' concurrent stop races and PID reuse hazards. - Add O_CLOEXEC to open() calls and use mkostemp() for temporary files to prevent file descriptor leaks to child processes. - Fix s390 Python extension TEXTREL by compiling as PIC. - Fix build with ASAN for jitdump. - Fix build failure due to btf_vlen() return type change. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQR2GiIUctdOfX2qHhGyPKLppCJ+JwUCajmIQAAKCRCyPKLppCJ+ J/8DAQCHYyodbD+Y+zX2kvaed6EStTTTLN4nyteWVb/3b0UZ5AEA4ECHdgpxgAx8 h6C+n8m8aAC6LyMgSYJwGm92rGgaewM= =CPUX -----END PGP SIGNATURE----- Merge tag 'perf-tools-for-v7.2-1-2026-06-22' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools Pull perf tools updates from Arnaldo Carvalho de Melo: - Introduce 'perf inject --aslr' to remap ASLR-randomized addresses in perf.data files, enabling reproducible analysis across runs with different address space layouts - Refactor evsel out of sample processing paths: store evsel in struct perf_sample and remove the redundant evsel parameter from tool APIs, tracepoint handlers, hist entry iterators, and db-export, simplifying the entire tool callback chain - Switch architecture detection from string-based perf_env__arch() comparisons to the numeric ELF e_machine field across the codebase (capstone, print_insn, c2c, lock-contention, sort, sample-raw, machine, header), making cross-analysis more robust - Overhaul ARM CoreSight ETM tests: add deterministic and named_threads workloads, speed up basic and disassembly tests, add process attribution and concurrent threads tests, remove unused workloads and duplicate tests, queue context packets for the frontend decoder - Add ARM SPE IMPDEF event decoding for Arm Neoverse N1, store MIDR in arm_spe_pkt for per-CPU event mapping, handle missing CPU IDs gracefully - Refactor libunwind support: remove the libunwind-local backend, make register reading cross-platform, add RISC-V libunwind support, allow dynamic selection between libdw and libunwind unwinding at runtime - Extensive hardening of perf.data parsing against crafted files: add bounds checks and byte-swap validation for session records, feature sections, header attributes, BPF metadata, auxtrace errors, compressed events, CPU maps, build ID notes, and ELF program headers. Add minimum event size validation and file offset diagnostics - Fix libdw API contract violations across dwarf-aux, libdw, probe-finder, annotate-data, and debuginfo subsystems. Fix callchain parent update in ORDER_CALLER mode, support DWARF line 0 in inline lists, handle multiple address spaces in callchains - Fix numerous 'perf sched' bugs: thread reference leaks, memory leaks, heap overflows with cross-machine recordings, NULL dereferences, replace BUG_ON assertions with graceful error handling, bounds-check CPU indices, fix SIGCHLD vs pause() races in sched stats - Overhaul the build system: move BPF skeleton generation out of Makefile.perf into bpf_skel.mak, decouple pmu-events from the prepare target, make beauty generated C code standalone .o files, compile BPF skeletons with -mcpu=v3, fix continuous rebuilds, various cleanups - Add 'perf test' JUnit XML reporting with -j/--junit option, split monolithic test suites into sub-tests, add summary reporting, refactor parallel poll loop, fix test failures on musl-based systems - Fix 'perf c2c' memory leaks in hist entry and format list handling, use-after-free in error paths, bounds-check CPU and node IDs - Fix 'perf bpf' metadata leaks on duplicate insert and alloc failure, bounds-check array offsets, validate event sizes and func_info fields, add NULL checks - Fix hwmon PMU: off-by-one null termination on sysfs reads, strlcpy buffer overflow in parse_hwmon_filename(), fd 0 check, empty label reads, scnprintf usage - Fix symbols subsystem: bounds-check ELF and sysfs build ID note iteration, validate p_filesz, fix 32-bit ELF bswap error, fix signed overflow in size checks, bounds-check .gnu_debuglink section - Fix tools lib api: null termination in filename__read_int/ull(), uninitialized stack data in filename__write_int(), snprintf truncation in mount_overload() - Replace libbabeltrace with babeltrace2-ctf-writer for CTF conversion in 'perf data' - Add RISC-V SDT argument parsing for static tracepoints - Add 'perf trace --show-cpu' option to display CPU id - Add 'perf bench sched pipe --write-size' option - Add a perf-specific .clang-format that overrides some kernel style behaviors - Update Intel vendor events for Alder Lake, Arrow Lake, Clearwater Forest, Emerald Rapids, Granite Rapids, Grand Ridge, Lunar Lake, Meteor Lake, Panther Lake, Sapphire Rapids, Sierra Forest - Add IOMMU metrics for AMD and Intel - Fix AMD event: switch l2_itlb_misses to bp_l1_tlb_miss_l2_tlb_miss.all - Add AMD IBS improvements: decode Streaming-store and Remote-Socket flags, suppress bogus fields on Zen4+, skip privilege test on Zen6+ - Fix 'perf lock contention' SIGCHLD vs pause() race, allow 'mmap_lock' in -L filter, enable end-timestamp for cgroup aggregation, fix non-atomic data updates - Fix 'perf stat' false NMI watchdog warning in aggregation modes, bounds-check CPU index in topology callbacks, add aggr_nr metric parser support for uncore scaling - Fix 'perf timechart' memory leaks, CPU bounds checking, use-after-free on corrupted callchains - Fix 'perf inject' itrace branch stack synthesis, fix synthesized sample size with branch stacks - Fix DSO heap overflow on decompressed paths, uninitialized pathname on fallback, set proper error codes - Fix various snprintf/scnprintf usages to prevent buffer overflows and truncation across the codebase - Fix off-by-one stack buffer overflow in kallsyms__parse() - Fix 'perf kwork' memory management, address sanitizer issues, bounds check work->cpu - Fix 'perf tpebs' concurrent stop races and PID reuse hazards - Add O_CLOEXEC to open() calls and use mkostemp() for temporary files to prevent file descriptor leaks to child processes - Fix s390 Python extension TEXTREL by compiling as PIC - Fix build with ASAN for jitdump - Fix build failure due to btf_vlen() return type change * tag 'perf-tools-for-v7.2-1-2026-06-22' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (343 commits) perf bpf: Fix up build failure due to change of btf_vlen() return type perf dso: Set standard errno on decompression failure perf bpf: Validate array presence before casting BPF prog info pointers perf c2c: Fix hist entry and format list leaks in c2c_he_free() perf c2c: Free format list entries when c2c_hists__init() fails perf cs-etm: Bounds-check CPU in cs_etm__get_queue() perf cs-etm: Require full global header in auxtrace_info size check perf cs-etm: Validate num_cpu before metadata allocation perf machine: Use snprintf() for guestmount path construction perf machine: Propagate machine__init() error to callers perf trace: Guard __probe_ip suppression with evsel__is_probe() perf evsel: Add lazy-initialized probe type detection helpers perf evsel: Add no-libtraceevent stubs for evsel__field() and evsel__common_field() perf cs-etm: Reject CPU IDs that would overflow signed comparison perf c2c: Free format list entries when releasing c2c hist entries perf bpf: Bounds-check array offsets in bpil_offs_to_addr() perf bpf: Reject oversized BPF metadata events that truncate header.size perf bpf: Validate func_info_rec_size and sub_id in synthesize_bpf_prog_name() perf sched: Replace (void*)1 sentinel with proper runtime allocation perf hwmon: Fix fd check to accept fd 0 in hwmon_pmu__describe_items() ... |
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Krishna Chaitanya Chundru
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ad4c2a8fd8 |
dt-bindings: PCI: qcom,pcie-sm8550: Add Eliza compatible
PCIe controller present in Eliza SoC is backwards compatible with the controller present in SM8550 SoC. Hence, add the compatible with SM8550 fallback. Eliza requires 6 reg entries, 8 clocks and 9 interrupts, so add the corresponding allOf constraints. Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com> Signed-off-by: Manivannan Sadhasivam <mani@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Link: https://patch.msgid.link/20260608-eliza-v3-2-9bdeb7434b28@oss.qualcomm.com |
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Lad Prabhakar
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e8433f6321 |
dt-bindings: PCI: renesas,r9a08g045-pcie: Add RZ/V2N support
Document the Renesas RZ/V2N PCIe host controller, which is compatible with the RZ/G3E PCIe IP and therefore uses it as a fallback compatible. The only difference is that it uses device ID 0x003B. Make the binding title generic to avoid extending the title for each new SoC, and update the description to list the supported SoCs and their capabilities. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Signed-off-by: Manivannan Sadhasivam <mani@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> Acked-by: Rob Herring (Arm) <robh@kernel.org> Link: https://patch.msgid.link/20260501102407.29462-1-prabhakar.mahadev-lad.rj@bp.renesas.com |
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Han Gao
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c6d51515ee |
dt-bindings: PCI: sophgo: Add dma-coherent property for SG2042
Add dma-coherent as an allowed property in the SG2042 PCIe host controller binding. SG2042's PCIe Root Complexes are cache-coherent with the CPU. Signed-off-by: Han Gao <gaohan@iscas.ac.cn> Signed-off-by: Manivannan Sadhasivam <mani@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Rob Herring (Arm) <robh@kernel.org> Link: https://patch.msgid.link/20260331171248.973014-2-gaohan@iscas.ac.cn |
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Ilpo Järvinen
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e9310aa3d2 |
PCI: Move pci_resource_alignment() to setup-res.c file
pci_resource_alignment() is a bit on the complex side to have in a header so put it into setup-res.c. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://patch.msgid.link/20260429122617.7324-10-ilpo.jarvinen@linux.intel.com |
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Ilpo Järvinen
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1845201aa5 |
PCI: Convert pci_resource_alignment() input parameters to const
pci_resource_alignment() calculates resource alignment and should not alter its input structs. Make its input parameters const. It requires making also pci_cardbus_resource_alignment() input const. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://patch.msgid.link/20260429122617.7324-9-ilpo.jarvinen@linux.intel.com |
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Ilpo Järvinen
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79a648209d |
PCI: Make pci_sriov_resource_alignment() pci_dev const
pci_sriov_resource_alignment() inputs struct pci_dev which it should not need to alter to calculate alignment. Make pci_dev pci_sriov_resource_alignment() inputs const. It requires making pci_iov_resource_size() input const as well. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://patch.msgid.link/20260429122617.7324-8-ilpo.jarvinen@linux.intel.com |
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Ilpo Järvinen
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9f331c50b3 |
powerpc/pseries: Make pseries_get_iov_fw_value() & pnv_iov_get() pci_dev const
Convert input pci_dev for pseries_get_iov_fw_value() and pnv_iov_get() to const to be able to convert pcibios_iov_resource_alignment() as well in an upcoming change. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://patch.msgid.link/20260429122617.7324-7-ilpo.jarvinen@linux.intel.com |
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Ilpo Järvinen
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71c6e7808e |
resource: Make resource_alignment() input const resource
resource_alignment() does not need to change resource so it can be made const. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://patch.msgid.link/20260429122617.7324-6-ilpo.jarvinen@linux.intel.com |
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Ilpo Järvinen
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854f9522a2 |
PCI: Remove const removal cast
__pci_bridge_assign_resources() inputs const pci_dev *bridge, but then immediately casts const away to pass the bridge to pdev_assign_resources_sorted(). As pdev_assign_resources_sorted() performs assignment of resources, it is not possible to make its input parameter to const. Neither of the __pci_bridge_assign_resources() callers requires the bridge parameter to be const. Thus, simply remove the out of place cast and convert the input parameter to non-const. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://patch.msgid.link/20260429122617.7324-5-ilpo.jarvinen@linux.intel.com |
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Ilpo Järvinen
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2c90aeab5a |
PCI: Consolidate add_list (aka realloc_head) empty sanity checks
Callers of __pci_bridge_assign_resources() and __pci_bus_assign_resources() perform WARN_ON_ONCE(list_empty(add_list))) checks to sanity check that all optional sizes were processed (and removed) from the list. The empty list sanity check is duplicated code so the more appropriate place for it would be inside the called function. Placing the empty list check into __pci_bus_assign_resources() also ensures all callsites do perform the sanity check which currently is not the case when being called from enable_slot(). This inconsistency was noted by Sashiko though only inside its in depth log but not flagged as a real problem, possibly because this is only a sanity check that should never fire. Nonetheless, this sanity check has been very useful to catch problems early in the past so it's good to do it consistently everywhere. As __pci_bus_assign_resources() is a recursive function, it needs to be renamed to __pci_bus_assign_resources_one() to only perform the empty list check at the end of processing the entire hierarchy in __pci_bus_assign_resources(). Suggested-by: sashiko.dev # Sanity check missing from enable_slot() Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://patch.msgid.link/20260429122617.7324-4-ilpo.jarvinen@linux.intel.com |
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Ilpo Järvinen
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29bfc3523f |
PCI: Rename 'added' to 'add_list'
The resource fitting algorithm uses different names from the list holding the optional sizes: added, add_head, add_list, and realloc_head. 'add_list' sounds the most natural and some of the related variables also use 'add' such as 'add_size'. To reduce variation, rename 'added' and 'add_head' to 'add_list'. Also rename some 'realloc_head' cases selectively to 'add_list'. While it would be nice to rename every 'realloc_head' to 'add_list' for consistency, it might create a backport headache with all the work going into this algorithm that may need to be eventually backported. Thus, it's better to leave 'realloc_head' as is for now. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://patch.msgid.link/20260429122617.7324-3-ilpo.jarvinen@linux.intel.com |
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Koichiro Den
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1fda82e37e |
NTB: epf: Implement .db_vector_count()/mask() for doorbells
Implement .db_vector_count() and .db_vector_mask() so NTB core/clients can map doorbell events to per-vector work. Report vectors as 0..(db_count - 2) (skipping the unused slot) and return BIT_ULL(db_vector) for the corresponding doorbell bit. Use ntb_epf_db_vector_count() for bounds checks in ntb_epf_db_vector_mask(), so the same lower-bound guard is applied before building the bitmask. Signed-off-by: Koichiro Den <den@valinux.co.jp> Signed-off-by: Manivannan Sadhasivam <mani@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Link: https://patch.msgid.link/20260513024923.451765-13-den@valinux.co.jp |
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Koichiro Den
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4fdea8dbb6 |
NTB: epf: Fix doorbell bitmask and IRQ vector handling
The EPF driver currently stores the incoming doorbell as a vector number
(irq_no + 1) in db_val and db_clear() clears all bits unconditionally.
This breaks db_read()/db_clear() semantics when multiple doorbells are
used.
Store doorbells as a bitmask (BIT_ULL(vector)) and make
db_clear(db_bits) clear only the specified bits. Use atomic64 operations
as db_val is updated from interrupt context.
Once db_val is stored as a bitmask, the ISR's doorbell vector is used
not only for ntb_db_event(), but also as the bit index for BIT_ULL().
The existing ISR derives that vector by subtracting pci_irq_vector(pdev,
0) from the Linux IRQ number passed to the handler, but Linux IRQ
numbers are not guaranteed to be contiguous.
Pass per-vector context as request_irq() dev_id instead, so the ISR gets
the device vector directly.
Validate the doorbell vector before updating db_val or calling
ntb_db_event(), so an unexpected vector cannot create an invalid shift
or be reported to NTB clients.
While at it, read and validate mw_count before requesting interrupt
vectors. An unsupported memory-window count does not need IRQs, and
failing before ntb_epf_init_isr() keeps the probe error path simple.
Fixes:
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Koichiro Den
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3147f0964c |
NTB: epf: Report 0-based doorbell vector via ntb_db_event()
ntb_db_event() expects the vector number to be relative to the first
doorbell vector starting at 0.
Vector 0 is reserved for link events in the EPF driver, so doorbells
start at vector 1. However, both supported peers (ntb_hw_epf with
pci-epf-ntb, and pci-epf-vntb) have historically skipped vector 1 and
started doorbells at vector 2.
Pass (irq_no - 2) to ntb_db_event() so doorbells are reported as 0..N-1.
If irq_no == 1 is ever observed, warn and ignore it, since the slot is
reserved in the legacy layout and reporting it as DB#0 would collide with
the real DB#0 slot.
Fixes:
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Koichiro Den
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6eb7e28f1f |
NTB: epf: Make db_valid_mask cover only real doorbell bits
ndev->db_count includes an unused doorbell slot due to the legacy extra
offset in the peer doorbell path. db_valid_mask must cover only the real
doorbell bits and exclude the unused slot.
Set db_valid_mask to BIT_ULL(db_count - 1) - 1.
Fixes:
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Koichiro Den
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84af8a5f5e |
NTB: epf: Document legacy doorbell slot offset in ntb_epf_peer_db_set()
ntb_epf_peer_db_set() uses ffs(db_bits) to select a doorbell to ring.
ffs() returns a 1-based bit index (bit 0 -> 1).
Entry 0 is reserved for link events, so doorbell bit 0 must map to entry
1. However, since the initial commit
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Koichiro Den
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2579f3f7f5 |
PCI: endpoint: pci-epf-vntb: Implement .db_vector_count()/mask() for doorbells
Implement .db_vector_count() and .db_vector_mask() so NTB core/clients can map doorbell events to per-vector work and avoid the thundering-herd behavior. pci-epf-vntb reserves two slots in db_count: slot 0 for link events and slot 1 which is historically unused. Therefore the number of doorbell vectors is (db_count - 2). Report vectors as 0..N-1 and return BIT_ULL(db_vector) for the corresponding doorbell bit. Build db_valid_mask from a validated vector count so out-of-range db_count values cannot create invalid shifts. Signed-off-by: Koichiro Den <den@valinux.co.jp> Signed-off-by: Manivannan Sadhasivam <mani@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Link: https://patch.msgid.link/20260513024923.451765-8-den@valinux.co.jp |
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Mingyu Wang
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10dd1a736d |
i2c: i801: fix hardware state machine corruption in error path
A severe livelock and subsequent Hung Task panic were observed in the
i2c-i801 driver during concurrent Fuzzing. The crash is caused by an
unconditional hardware register cleanup in the error handling path of
i801_access().
When i801_check_pre() fails (e.g., returning -EBUSY because the SMBus
controller is actively used by BIOS/ACPI), the kernel does not actually
acquire the hardware ownership. However, the code jumps to the 'out'
label and executes:
iowrite8(SMBHSTSTS_INUSE_STS | STATUS_FLAGS, SMBHSTSTS(priv));
This forcefully clears the INUSE_STS lock and resets the hardware status
flags without owning the controller. Doing so interrupts ongoing BIOS/ACPI
transactions and totally corrupts the SMBus hardware state machine.
Consequently, all subsequent i801_access() calls fail at the pre-check
stage, triggering an endless stream of "SMBus is busy, can't use it!"
error logs. Over a slow serial console, this printk flood monopolizes
the CPU (Console Livelock), starving other processes trying to acquire
the mmap_lock down_read semaphore, ultimately triggering the hung task
watchdog.
Fix this by moving the 'out' label below the hardware register cleanup.
If i801_check_pre() fails, we safely bypass the iowrite8() and only
release the software locks (pm_runtime and mutex), strictly adhering to
the rule of not releasing resources that were never acquired.
Fixes:
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Koichiro Den
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823468a4ea |
PCI: endpoint: pci-epf-vntb: Exclude reserved slots from db_valid_mask
In pci-epf-vntb, db_count represents the total number of doorbell slots
exposed to the peer, including:
- slot #0 reserved for link events, and
- slot #1 historically unused (kept for compatibility).
Only the remaining slots correspond to actual doorbell bits. The current
db_valid_mask() exposes all slots as valid doorbells.
Limit db_valid_mask() to the real doorbell bits by returning
BIT_ULL(db_count - 2) - 1, and guard against db_count < 2.
Fixes:
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Linus Torvalds
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f31c00c377 |
platform-drivers-x86 for v7.2-1
Highlights:
- amd/hfi: Add support for dynamic ranking tables (version 3)
- amd/pmc:
- Add PMC driver support for AMD 1Ah M80H SoC
- Delay suspend for some Lenovo Laptops to avoid keyboard and lid
switch problems after s2idle
- arm64: qcom-hamoa-ec: Add Hamoa/Purwa/Glymur EC driver
- asus-armoury: add support for G614PR, GA402NJ, GA403UM, and FX608JPR
- asus-wmi: add keystone dongle support
- dell-dw5826e: Add reset driver for DW5826e
- dell-laptop: Fix rollback path
- hp-wmi:
- Add support for Omen 16-ap0xxx (board ID 8D26) and board ID 8B2F
- intel-hid:
- Add HP ProBook x360 440 G1 5 button array support
- Prevent racing ACPI notify handlers
- intel/pmc:
- Add Nova Lake support
- Rate-limit LTR scale-factor warning
- intel-uncore-freq:
- Expose instance ID in the sysfs
- Fix current_freq_khz after CPU hotplug
- intel/vsec: Restore BAR fallback for header walk
- ISST: Restore SST-PP control to all domains
- lenovo-wmi-*:
- Add more CPU tunable attributes
- Add GPU tunable attributes
- Add WMI battery charge limiting
- oxpec: add support for OneXPlayer Super X
- sel3350-platform: Retain LED state on load and unload
- surface: SAM: Add support for Surface Pro 12in
- uniwill-laptop: Add support for battery charge modes
- tools/power/x86/intel-speed-select: Harden daemon pidfile open
- Major refactoring efforts:
- ACPI driver to platform driver conversion
- Converting drivers to use the improved WMI API
- Miscellaneous cleanups / refactoring / improvements
The following is an automated shortlog grouped by driver:
ACPI:
- provide acpi_bus_find_device_by_name()
alienware-wmi-base:
- Transition to new WMI API
amd: hfi:
- Support for ranking table versions
amd/hsmp:
- Clamp ioctl/send_message indices (Spectre v1)
amd/pmc:
- Add delay_suspend module parameter
- Add PMC driver support for AMD 1Ah M80H SoC
- Check for intermediate wakeup in function
- Delay suspend for some Lenovo Laptops
- Don't log during intermediate wakeups
- Use per-SoC cpu_info struct for SMU mailbox and IP info
apple-gmux:
- Drop unused assignment of pnp_device_id driver data
arm64:
- Add driver for EC found on Qualcomm reference devices
arm64: qcom-hamoa-ec:
- Fix indentation in comment tables
arm64 Use named initializers for struct i2c_device_id:
- arm64 Use named initializers for struct i2c_device_id
asus-armoury:
- add support for FX608JPR
- add support for G614PR
- add support for GA402NJ
- add support for GA403UM
asus-wmi:
- add keystone dongle support
barco-p50-gpio:
- attach software node to its target GPIO device
classmate-laptop:
- Address memory leaks on driver removal
- Convert accel driver to a platform one
- Convert ipml driver to a platform one
- Convert keys driver to a platform one
- Convert tablet driver to a platform one
- Convert v4 accel driver to a platform one
- Pass struct device pointer to helpers
- Register ACPI notify handlers directly
- Rename two helper functions
- Unify probe rollback and remove code
dell-ddv:
- Use new buffer-based WMI API
dell-descriptor:
- Use new buffer-based WMI API
dell-dw5826e:
- Add reset driver for DW5826e
dell-laptop:
- add Inspiron N5110 to touchpad LED quirk table
- fix missing cleanups in init error path
dell-privacy:
- correct CONFIG_DELL_WMI_PRIVACY macro name in comments
- Use new buffer-based WMI API
dell_rbu:
- use strscpy in image_type_write
dell-smbios-wmi:
- Use new buffer-based WMI API
dell-wmi-base:
- Use new buffer-based WMI API
docs:
- fix typo in uniwill-laptop.rst
hp-wmi:
- Add support for Omen 16-ap0xxx (8D26)
- Add support for Omen 16-ap0xxx (8E35)
- Add thermal support for board 8B2F
hwmon:
- (dell-smm) Use new buffer-based WMI API
intel-hid:
- Add HP ProBook x360 440 G1 to button_array_table
- Protect ACPI notify handler against recursion
intel/pmc:
- Add ACPI PWRM telemetry driver for Nova Lake S
- Add Nova Lake support to intel_pmc_core driver
- Add NVL PCI IDs for SSRAM telemetry discovery
- Add PMC SSRAM Kconfig description
- Add support for variable DMU offsets
- Enable Pkgc blocking residency counter
- Enable PkgC LTR blocking counter
- rate-limit LTR scale-factor warning
- Retrieve PMC info only for available PMCs
intel/pmc/ssram:
- Add ACPI discovery scaffolding
- Add PCI platform data
- Make PMT registration optional
- Refactor DEVID/PWRMBASE extraction into helper
- Rename probe and PCI ID table for consistency
- Switch to static array with per-index probe state
intel/pmc:
- Use __free() in pmc_core_punit_pmt_init()
- Use PCI DID for PMC SSRAM device discovery
intel/pmt:
- Add pre/post decode hooks around header parsing
- Cache the telemetry discovery header
intel/pmt/crashlog:
- Split init into pre-decode
intel/pmt:
- Pass discovery index instead of resource
intel/pmt/telemetry:
- Move overlap check to post-decode hook
intel/pmt:
- Unify header fetch and add ACPI source
intel/tpmi:
- convert mutex in mem_write() to guard
- use cleanup helpers in mem_write()
intel-uncore-freq:
- Expose instance ID in the sysfs
- Fix current_freq_khz after CPU hotplug
- Rename instance_id
intel/vsec:
- allocate res with intel_vsec_dev
- Restore BAR fallback for header walk
ISST:
- Restore SST-PP control to all domains
lenovo-wmi-capdata:
- Add debugfs file for dumping capdata
lenovo-wmi-helpers:
- Add helper for creating per-device debugfs dir
lenovo-wmi-other:
- Add force_load_psy_ext module parameter
- Add GPU tunable attributes
- Add missing CPU tunable attributes
- Add WMI battery charge limiting
- Rename LWMI_OM_FW_ATTR_BASE_PATH
meraki-mx100:
- use real software node references
modpost:
- Handle malformed WMI GUID strings
Move delayed work on system_dfl_wq:
- Move delayed work on system_dfl_wq
msi-ec:
- Add support for MSI Pulse GL66 12th Gen
oxpec:
- add support for OneXPlayer Super X
panasonic-laptop:
- simplify allocation of sinf
pcengines-apuv2:
- reduce indiraction in swnode assignment
pmc_atom:
- Use named initializer for pci_device_id array
sel3350-platform:
- Retain LED state on load and unload
sonypi:
- use strscpy() in sonypi_acpi_probe
surface: SAM:
- Add support for Surface Pro 12in
thinkpad_acpi:
- Add debugfs entry to display HWDD raw
- Remove unneeded goto
tools/power/x86/intel-speed-select:
- Harden daemon pidfile open
uniwill-laptop:
- Add support for battery charge modes
- Enable battery charge modes on supported devices
- Mark EC_ADDR_OEM_4 as volatile
- Rework FN lock/super key suspend handling
use u8 * for raw byte buffers:
- use u8 * for raw byte buffers
wmi:
- Make sysfs attributes const
- Make wmi_bus_class const
x86-android-tablets:
- enable fwnode matching of GPIO chips
- Use named initializers for struct i2c_device_id
x86/platform/olpc: xo15:
- Convert ACPI driver to a platform one
- Drop wakeup source on driver removal
xo15-ebook:
- Convert ACPI driver to a platform one
- Fix formatting of labels
- Fix wakeup source and GPE handling
- Register ACPI notify handler directly
- Use devres-based resource management
Merges:
- Merge branch 'fixes' into for-next
- Merge branch 'fixes' of into for-next
- Merge branch 'intel-sst' of https://github.com/spandruvada/linux-kernel into review-ilpo-next
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Merge tag 'platform-drivers-x86-v7.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver updates from Ilpo Järvinen:
- amd/hfi: Add support for dynamic ranking tables (version 3)
- amd/pmc:
- Add PMC driver support for AMD 1Ah M80H SoC
- Delay suspend for some Lenovo Laptops to avoid keyboard and lid
switch problems after s2idle
- arm64: qcom-hamoa-ec: Add Hamoa/Purwa/Glymur EC driver
- asus-armoury: add support for G614PR, GA402NJ, GA403UM, and FX608JPR
- asus-wmi: add keystone dongle support
- dell-dw5826e: Add reset driver for DW5826e
- dell-laptop: Fix rollback path
- hp-wmi:
- Add support for Omen 16-ap0xxx (board ID 8D26) and board ID 8B2F
- intel-hid:
- Add HP ProBook x360 440 G1 5 button array support
- Prevent racing ACPI notify handlers
- intel/pmc:
- Add Nova Lake support
- Rate-limit LTR scale-factor warning
- intel-uncore-freq:
- Expose instance ID in the sysfs
- Fix current_freq_khz after CPU hotplug
- intel/vsec: Restore BAR fallback for header walk
- ISST: Restore SST-PP control to all domains
- lenovo-wmi-*:
- Add more CPU tunable attributes
- Add GPU tunable attributes
- Add WMI battery charge limiting
- oxpec: add support for OneXPlayer Super X
- sel3350-platform: Retain LED state on load and unload
- surface: SAM: Add support for Surface Pro 12in
- uniwill-laptop: Add support for battery charge modes
- tools/power/x86/intel-speed-select: Harden daemon pidfile open
- Major refactoring efforts:
- ACPI driver to platform driver conversion
- Converting drivers to use the improved WMI API
- Miscellaneous cleanups / refactoring / improvements
* tag 'platform-drivers-x86-v7.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (115 commits)
platform/x86/intel/pmc: Add NVL PCI IDs for SSRAM telemetry discovery
platform/x86/intel/pmc/ssram: Make PMT registration optional
platform/x86/intel/pmc/ssram: Add ACPI discovery scaffolding
platform/x86/intel/pmc/ssram: Switch to static array with per-index probe state
platform/x86/intel/pmc/ssram: Refactor DEVID/PWRMBASE extraction into helper
platform/x86/intel/pmc/ssram: Add PCI platform data
platform/x86/intel/pmc/ssram: Rename probe and PCI ID table for consistency
platform/x86/intel/pmc: Add ACPI PWRM telemetry driver for Nova Lake S
platform/x86/intel/pmc: Add PMC SSRAM Kconfig description
platform/x86/intel/pmt: Unify header fetch and add ACPI source
platform/x86/intel/pmt: Cache the telemetry discovery header
platform/x86/intel/pmt: Pass discovery index instead of resource
platform/x86/intel/pmt/telemetry: Move overlap check to post-decode hook
platform/x86/intel/pmt/crashlog: Split init into pre-decode
platform/x86/intel/pmt: Add pre/post decode hooks around header parsing
modpost: Handle malformed WMI GUID strings
platform/wmi: Make sysfs attributes const
platform/wmi: Make wmi_bus_class const
hwmon: (dell-smm) Use new buffer-based WMI API
platform/x86: dell-ddv: Use new buffer-based WMI API
...
|
||
Andy Shevchenko
|
2e9a7f6832 |
i2c: mpc: Fix timeout calculations
At first glance the harmless cleanup of the driver does nothing bad.
However, as the operator precedence list states the '*' (multiplication)
and '/' division operators have order 5 with left-to-right associativity
the *= has order 17 and associativity right-to-left. It wouldn't be
a problem to replace
foo = foo * HZ / 1000000;
with
foo *= HZ / 1000000;
if HZ constant is in Hertz. The problem is that in the Linux kernel HZ is
defined in jiffy units, which is order of magnitude smaller than a million.
That's why operator precedence has a crucial role here. Fix the regression
by reverting pre-optimized calculations.
Fixes:
|
||
Jens Axboe
|
29264400dd |
nvme fixes for Linux 7.2
- Apple A11 quirk for sharing tags across admin and IO queues (Nick)
- Target fix for short AUTH_RECEIVE buffers (Michael)
- Target fix for SQ refcount leak (Wentao)
- Target RDMA handling inline data with nonzero offset (Bryam)
- Target TCP fix handling the TCP_CLOSING state (Maurizio)
- FC abort fixes in early initialization (Mohamed)
- Controller device teardown fixes (Maurizio, John)
- Allocate the target ana_state with the port (Rosen)
- Quieten sparse and sysfs symbol warnings (John)
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Merge tag 'nvme-7.2-2026-06-23' of git://git.infradead.org/nvme into block-7.2
Pull NVMe fixes from Keith:
"- Apple A11 quirk for sharing tags across admin and IO queues (Nick)
- Target fix for short AUTH_RECEIVE buffers (Michael)
- Target fix for SQ refcount leak (Wentao)
- Target RDMA handling inline data with nonzero offset (Bryam)
- Target TCP fix handling the TCP_CLOSING state (Maurizio)
- FC abort fixes in early initialization (Mohamed)
- Controller device teardown fixes (Maurizio, John)
- Allocate the target ana_state with the port (Rosen)
- Quieten sparse and sysfs symbol warnings (John)"
* tag 'nvme-7.2-2026-06-23' of git://git.infradead.org/nvme:
nvmet-tcp: handle TCP_CLOSING state in nvmet_tcp_state_change
nvmet-auth: reject short AUTH_RECEIVE buffers
nvme-fc: Do not cancel requests in io target before it is initialized
nvme: make nvme_add_ns{_head}_cdev return void
nvme: make some sysfs diagnostic structures static
nvmet-rdma: handle inline data with a nonzero offset
nvme: target: allocate ana_state with port
nvme: fix crash and memory leak during invalid cdev teardown
nvmet: fix refcount leak in nvmet_sq_create()
nvme: quieten sparse warning in valid LBA size check
nvme-apple: Prevent shared tags across queues on Apple A11
|
||
|
Linus Torvalds
|
515db26214 |
mailbox: updates for v7.2
- core: add debugfs support for used channels, fix resource leak on startup failure, propagate tx error codes, and clarify blocking mode thread support
- exynos: remove unused register definitions
- imx: refactor IRQ handlers, migrate to devm helpers, and other minor improvements
- mpfs: fix syscon presence check in inbox ISR
- mtk-adsp: fix use-after-free during device teardown
- qcom: add dt-bindings for QCOM Maili, Hawi, Shikra APCS, and Nord CPUCP platform support
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Merge tag 'mailbox-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox
Pull mailbox updates from Jassi Brar:
"Core:
- add debugfs support for used channels
- fix resource leak on startup failure
- propagate tx error codes
- clarify blocking mode thread support
Drivers:
- exynos: remove unused register definitions
- imx: refactor IRQ handlers, migrate to devm helpers, and other
minor improvements
- mpfs: fix syscon presence check in inbox ISR
- mtk-adsp: fix use-after-free during device teardown
- qcom: add dt-bindings for QCOM Maili, Hawi, Shikra APCS, and Nord
CPUCP platform support"
* tag 'mailbox-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox: (23 commits)
mailbox: imx: Don't force-thread the primary handler
mailbox: imx: Move the RXDB part of the mailbox into the threaded handler
mailbox: imx: Move the RX part of the mailbox into the threaded handler
mailbox: imx: Start splitting the IRQ handler in primary and threaded handler
mailbox: imx: Use channel index instead of zero in imx_mu_specific_rx()
mailbox: imx: use devm_of_platform_populate()
mailbox: imx: Use devm_pm_runtime_enable()
mailbox: imx: Add a channel shutdown field
mailbox: imx: Forward the timeout/ error in imx_mu_generic_tx()
dt-bindings: mailbox: qcom: Add IPCC support for Maili Platform
mailbox: add list of used channels to debugfs
mailbox: don't free the channel if the startup callback failed
mailbox: Make mbox_send_message() return error code when tx fails
mailbox: Clarify multi-thread is not supported in blocking mode
mailbox: mtk-adsp: fix UAF during device teardown
mailbox: qcom: Unify user-visible "Qualcomm" name
mailbox: exynos: Drop unused register definitions
dt-bindings: mailbox: qcom: Add IPCC support for Hawi Platform
dt-bindings: mailbox: qcom,cpucp-mbox: Add Hawi compatible
dt-bindings: mailbox: qcom: Add Shikra APCS compatible
...
|
||
|
Linus Torvalds
|
16b2087efd |
Hi
Correctly rebased version of [1] now that for-next-tpm was mirrored today to linux-next by Mark today. Contains only bug fixes. [1] https://lore.kernel.org/linux-integrity/ajc9JcxcH8eGqxbX@kernel.org/T/#t BR, Jarkko -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRE6pSOnaBC00OEHEIaerohdGur0gUCajlU9gAKCRAaerohdGur 0qEYAP9mvUaZXDNJoAfbmF+yIo6Sydhapg/cOWcrXLbYOpDIeAEAkEyMePRsntzg g5JKWSFuGnYrcPiv5uxJ0+bWL0WB9gI= =ArKY -----END PGP SIGNATURE----- Merge tag 'for-next-tpm-7.2-rc1-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd Pull tpm updates from Jarkko Sakkinen: "Only bug fixes" * tag 'for-next-tpm-7.2-rc1-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd: tpm: fix event_size output in tpm1_binary_bios_measurements_show tpm: tpm_crb_ffa: revert defered_probed when tpm_crb_ffa is built-in tpm: tpm2-sessions: wait for async KPP completion in tpm_buf_append_salt tpm: tpm_tis: Add settle time for some TPMs tpm: tpm_tis: store entire did_vid tpm_crb: Check ACPI_COMPANION() against NULL during probe tpm: tpm_tis_spi: Use wait_woken() in wait_for_tmp_stat() tpm: Initialize name_size_alg for non-NULL name in tpm_buf_append_name() tpm: restore timeout for key creation commands tpm: svsm: constify tpm_chip_ops |
||
|
Linus Torvalds
|
3eb20a97b3 |
linux_kselftest-next-7.2-rc1-second
Fixes ftrace test and kselftest document
-- docs: remove obsolete wiki link from kselftest.rst
-- ftrace: drop invalid top-level local in test_ownership
-- ftrace: Fix trace_marker_raw test on 64K page kernels
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Merge tag 'linux_kselftest-next-7.2-rc1-second' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull more kselftest updates from Shuah Khan:
"Docs:
-remove obsolete wiki link from kselftest.rst
ftrace:
- drop invalid top-level local in test_ownership
- Fix trace_marker_raw test on 64K page kernels"
* tag 'linux_kselftest-next-7.2-rc1-second' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
docs: kselftest: remove link to obsolete wiki
selftests/ftrace: Fix trace_marker_raw test on 64K page kernels
selftests/ftrace: Drop invalid top-level local in test_ownership
|
||
Oder Chiou
|
d0c415f007 |
ASoC: rt5575: Use __le32 for SPI burst write address
The addr field in the SPI burst write buffer represents on-wire
little-endian data. Define it as __le32 so that the assignment of
cpu_to_le32() is type correct and avoids sparse endian warnings.
Closes:
https://lore.kernel.org/oe-kbuild-all/202606230139.rFZUVpCa-lkp@intel.com/
Fixes:
|
||
Bartosz Juraszewski
|
e26bb459d0 |
ASoC: tas2783: Update loaded firmware names to linux-firmware 20260519
In linux-firmware commit from 2026-05-19 `2f90f4fe5c67f51a8410907a...` `ASoC: tas2783: Add Firmware files for tas2783A projects` by Baojun Xu 138 new firmware files for tas2783 were added, none of which are loaded by the kernel. Kernel expects files to be named with the following convention: "%04X-%1X-%1X.bin". However the added firmware files follow "-0x%1X.bin" naming instead with `0x` hex prefix, which fails to load resulting in following dmesg log: slave-tas2783 sdw:0:1:0102:0000:01:8: Direct firmware load for 1714-1-8.bin failed with error -2 slave-tas2783 sdw:0:1:0102:0000:01:8: Failed to read fw binary 1714-1-8.bin slave-tas2783 sdw:0:1:0102:0000:01:b: Direct firmware load for 1714-1-B.bin failed with error -2 slave-tas2783 sdw:0:1:0102:0000:01:b: Failed to read fw binary 1714-1-B.bin slave-tas2783 sdw:0:1:0102:0000:01:8: error playback without fw download slave-tas2783 sdw:0:1:0102:0000:01:8: ASoC error (-22): at snd_soc_dai_hw_params() on tas2783-codec This same commit removes all 22 symlinks from WHENCE, that used naming without the '0x' prefix to only 6 prevoiusly existing .bin files. This patch adds `0x` prefix explicitly to the generated firmware name allowing file to successfully load. In case prefixed firmware is missing due to out of date linux-firmware, we set the fallback flag and attempt to load firmware again based on the old file names. This prefix change results in functioning firmware loading on ASUS ProArt PX13 HN7306EAC, which uses 1714-1-0x8.bin and 1714-1-0xB.bin firmware files. Tested on top of 7.1 and next-20260619 with SND_SOC_AMD_ACP7X set to no. Signed-off-by: Bartosz Juraszewski <bjuraszewski@gmail.com> Link: https://patch.msgid.link/20260622182733.23947-1-bjuraszewski@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org> |
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HyeongJun An
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1ce42a11be |
ASoC: SDCA: Validate written enum value in ge_put_enum_double()
ge_put_enum_double() passes the user-supplied enumeration index
item[0] to snd_soc_enum_item_to_val() without checking it against the
number of items in the enum:
ret = snd_soc_enum_item_to_val(e, item[0]);
snd_soc_enum_item_to_val() indexes the heap-allocated e->values[] array
with that index (e->values is set from a devm_kcalloc() of e->items
entries), so a control write with an out-of-range item[0] reads past the
end of the values buffer. The bounds check in
snd_soc_dapm_put_enum_double() only runs afterwards, so it does not
prevent the read here.
Reject an out-of-range item before using it, matching the other enum put
handlers.
This issue was pointed out by the Sashiko AI review bot while reviewing a
related enum-validation series:
https://lore.kernel.org/all/20260609125735.CEB651F00893@smtp.kernel.org/
Fixes:
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