linux.git/drivers/ras, branch master Linux kernel source tree Merge tag 'edac_updates_for_v7.2_rc1' of gitolite.kernel.org:pub/scm/linux/kernel/git/ras/ras 2026-06-16T00:01:01+00:00 Linus Torvalds torvalds@linux-foundation.org 2026-06-16T00:01:01+00:00 4b5713ef2f929dd8720fcdb66c063643ef9e3bcb Pull EDAC updates from Borislav Petkov: - Fix a malformed Kconfig default for the AMD Address Translation Library - Make sure i10nm loads successfully when the ADXL address decoder is absent because former has decoding capabilities too - Ensure error reporting is cleanly disabled on driver teardown and on failed initialization for several legacy Intel EDAC drivers - Fix a grammar issue in a diagnostic warning in the Sandy Bridge driver - Fix a missing resource release callback and incorrect memory topology parsing in the igen6 driver, and add support for Intel Panther Lake-H and Nova Lake-H SoCs - Fix an out-of-bounds shift causing undefined behaviour in the Skylake driver - Consolidate memory controller register access helpers into shared common code across the Intel Skylake, Ice Lake, and Meteor Lake drivers - Introduce sub-channel awareness and Rank Retry Logic improvements to the Intel Skylake and i10nm drivers in preparation for Diamond Rapids server support - Add Rank Retry Logic support for Intel Diamond Rapids server to imh_edac - Make In-Band ECC detection registers configurable per SoC in the igen6 driver - Standardize PCI device ID table definitions across all EDAC drivers to use named field initializers and standard PCI helper macros * tag 'edac_updates_for_v7.2_rc1' of gitolite.kernel.org:pub/scm/linux/kernel/git/ras/ras: (22 commits) EDAC: Consistently define pci_device_ids using named initializers EDAC/igen6: Add Intel Nova Lake-H SoC support EDAC/igen6: Make registers for detecting IBECC configurable EDAC/imh: Add RRL support for Intel Diamond Rapids server EDAC/{skx_common,i10nm}: Prepare RRL for sub-channel granularity EDAC/skx_common: Add SubChannel support to ADXL decode EDAC/{skx_common,i10nm}: Move RRL handling to common code EDAC/{skx_common,i10nm}: Introduce rrl_ctrl_mode EDAC/{skx_common,i10nm}: Rename rrl_mode to rrl_source_type EDAC/{skx_common,skx,i10nm}: Split skx_set_decode() EDAC/{skx_common,i10nm,imh}: Move MC register access helpers to skx_common EDAC/{skx_common,skx}: Fix UBSAN shift-out-of-bounds in skx_get_dimm_info EDAC/igen6: Add one Intel Panther Lake-H SoC support EDAC/igen6: Fix memory topology parsing for Panther Lake-H SoCs EDAC/igen6: Fix call trace due to missing release() EDAC/sb_edac: fix grammar in sb_decode_ddr3 warning EDAC/i5400: disable error reporting at teardown and refactor helper EDAC/i5100: disable error reporting at teardown and create helper EDAC/i5000: disable error reporting at teardown and refactor helper EDAC/i7300: disable error reporting if init fails and refactor helper ... 
Pull EDAC updates from Borislav Petkov:

 - Fix a malformed Kconfig default for the AMD Address Translation
   Library

 - Make sure i10nm loads successfully when the ADXL address decoder is
   absent because former has decoding capabilities too

 - Ensure error reporting is cleanly disabled on driver teardown and on
   failed initialization for several legacy Intel EDAC drivers

 - Fix a grammar issue in a diagnostic warning in the Sandy Bridge
   driver

 - Fix a missing resource release callback and incorrect memory topology
   parsing in the igen6 driver, and add support for Intel Panther Lake-H
   and Nova Lake-H SoCs

 - Fix an out-of-bounds shift causing undefined behaviour in the Skylake
   driver

 - Consolidate memory controller register access helpers into shared
   common code across the Intel Skylake, Ice Lake, and Meteor Lake
   drivers

 - Introduce sub-channel awareness and Rank Retry Logic improvements to
   the Intel Skylake and i10nm drivers in preparation for Diamond Rapids
   server support

 - Add Rank Retry Logic support for Intel Diamond Rapids server to
   imh_edac

 - Make In-Band ECC detection registers configurable per SoC in the
   igen6 driver

 - Standardize PCI device ID table definitions across all EDAC drivers
   to use named field initializers and standard PCI helper macros

* tag 'edac_updates_for_v7.2_rc1' of gitolite.kernel.org:pub/scm/linux/kernel/git/ras/ras: (22 commits)
  EDAC: Consistently define pci_device_ids using named initializers
  EDAC/igen6: Add Intel Nova Lake-H SoC support
  EDAC/igen6: Make registers for detecting IBECC configurable
  EDAC/imh: Add RRL support for Intel Diamond Rapids server
  EDAC/{skx_common,i10nm}: Prepare RRL for sub-channel granularity
  EDAC/skx_common: Add SubChannel support to ADXL decode
  EDAC/{skx_common,i10nm}: Move RRL handling to common code
  EDAC/{skx_common,i10nm}: Introduce rrl_ctrl_mode
  EDAC/{skx_common,i10nm}: Rename rrl_mode to rrl_source_type
  EDAC/{skx_common,skx,i10nm}: Split skx_set_decode()
  EDAC/{skx_common,i10nm,imh}: Move MC register access helpers to skx_common
  EDAC/{skx_common,skx}: Fix UBSAN shift-out-of-bounds in skx_get_dimm_info
  EDAC/igen6: Add one Intel Panther Lake-H SoC support
  EDAC/igen6: Fix memory topology parsing for Panther Lake-H SoCs
  EDAC/igen6: Fix call trace due to missing release()
  EDAC/sb_edac: fix grammar in sb_decode_ddr3 warning
  EDAC/i5400: disable error reporting at teardown and refactor helper
  EDAC/i5100: disable error reporting at teardown and create helper
  EDAC/i5000: disable error reporting at teardown and refactor helper
  EDAC/i7300: disable error reporting if init fails and refactor helper
  ...
RAS/AMD/ATL: Drop malformed default N from Kconfig 2026-05-14T11:24:51+00:00 Andy Shevchenko andriy.shevchenko@linux.intel.com 2026-05-13T20:48:55+00:00 2c6a0994e9f15da5aba8cb108df35a257a792030 The capital letters are for symbols and N in 'default N' will be evaluated as another, nonexistent, Kconfig symbol, and not as the 'no' it should be. More importantly, 'n' *is* the default already. Hence just drop the malformed line. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://patch.msgid.link/20260513205021.368190-1-andriy.shevchenko@linux.intel.com 
The capital letters are for symbols and N in 'default N' will be evaluated as
another, nonexistent, Kconfig symbol, and not as the 'no' it should be.  More
importantly, 'n' *is* the default already. Hence just drop the malformed line.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://patch.msgid.link/20260513205021.368190-1-andriy.shevchenko@linux.intel.com
treewide: Explicitly include the x86 CPUID headers 2026-05-06T12:29:59+00:00 Ahmed S. Darwish darwi@linutronix.de 2026-03-27T02:15:18+00:00 7b49a3fb69e785a2425c8dc7dbd0779a0a4c0eb2 Modify all CPUID call sites which implicitly include any of the CPUID headers to explicitly include them instead. For KVM's reverse_cpuid.h, just include <asm/cpuid/types.h> since it references the CPUID_EAX..EDX symbols without using the CPUID APIs. Note, this allows removing the inclusion of <asm/cpuid/api.h> from within <asm/processor.h> next. That allows the CPUID API headers to include <asm/processor.h> without introducing a circular dependency. Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/20260327021645.555257-1-darwi@linutronix.de 
Modify all CPUID call sites which implicitly include any of the CPUID
headers to explicitly include them instead.

For KVM's reverse_cpuid.h, just include <asm/cpuid/types.h> since it
references the CPUID_EAX..EDX symbols without using the CPUID APIs.

Note, this allows removing the inclusion of <asm/cpuid/api.h> from within
<asm/processor.h> next.  That allows the CPUID API headers to include
<asm/processor.h> without introducing a circular dependency.

Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/20260327021645.555257-1-darwi@linutronix.de
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-22T01:09:51+00:00 Linus Torvalds torvalds@linux-foundation.org 2026-02-22T00:37:42+00:00 bf4afc53b77aeaa48b5409da5c8da6bb4eff7f43 This was done entirely with mindless brute force, using git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' | xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/' to convert the new alloc_obj() users that had a simple GFP_KERNEL argument to just drop that argument. Note that due to the extreme simplicity of the scripting, any slightly more complex cases spread over multiple lines would not be triggered: they definitely exist, but this covers the vast bulk of the cases, and the resulting diff is also then easier to check automatically. For the same reason the 'flex' versions will be done as a separate conversion. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
This was done entirely with mindless brute force, using

    git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
        xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'

to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.

Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.

For the same reason the 'flex' versions will be done as a separate
conversion.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21T09:02:28+00:00 Kees Cook kees@kernel.org 2026-02-21T07:49:23+00:00 69050f8d6d075dc01af7a5f2f550a8067510366f This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook <kees@kernel.org> 
This is the result of running the Coccinelle script from
scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to
avoid scalar types (which need careful case-by-case checking), and
instead replace kmalloc-family calls that allocate struct or union
object instances:

Single allocations:	kmalloc(sizeof(TYPE), ...)
are replaced with:	kmalloc_obj(TYPE, ...)

Array allocations:	kmalloc_array(COUNT, sizeof(TYPE), ...)
are replaced with:	kmalloc_objs(TYPE, COUNT, ...)

Flex array allocations:	kmalloc(struct_size(PTR, FAM, COUNT), ...)
are replaced with:	kmalloc_flex(*PTR, FAM, COUNT, ...)

(where TYPE may also be *VAR)

The resulting allocations no longer return "void *", instead returning
"TYPE *".

Signed-off-by: Kees Cook <kees@kernel.org>
Merge tag 'edac_updates_for_v7.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras 2026-02-11T02:14:36+00:00 Linus Torvalds torvalds@linux-foundation.org 2026-02-11T02:14:36+00:00 14c357c4add8b2a213f291230c5bf485cffb9db6 Pull EDAC updates from Borislav Petkov: - Remove two drivers for obsolete hardware: i82443bxgx_edac and r82600_edac - Add support for Intel Amston Lake and Panther Lake-H SoCs to igen6_edac - The usual amount of fixes and cleanups * tag 'edac_updates_for_v7.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras: EDAC/r82600: Remove this obsolete driver EDAC/i82443bxgx: Remove driver that has been marked broken since 2007 EDAC/amd64: Avoid a -Wformat-security warning RAS/AMD/ATL: Remove an unneeded semicolon EDAC/igen6: Add more Intel Panther Lake-H SoCs support EDAC/igen6: Make masks of {MCHBAR, TOM, TOUUD, ECC_ERROR_LOG} configurable EDAC/igen6: Add two Intel Amston Lake SoCs support EDAC/i5400: Fix snprintf() limit calculation in calculate_dimm_size() EDAC/i5000: Fix snprintf() size calculation in calculate_dimm_size() 
Pull EDAC updates from Borislav Petkov:

 - Remove two drivers for obsolete hardware: i82443bxgx_edac and
   r82600_edac

 - Add support for Intel Amston Lake and Panther Lake-H SoCs to
   igen6_edac

 - The usual amount of fixes and cleanups

* tag 'edac_updates_for_v7.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
  EDAC/r82600: Remove this obsolete driver
  EDAC/i82443bxgx: Remove driver that has been marked broken since 2007
  EDAC/amd64: Avoid a -Wformat-security warning
  RAS/AMD/ATL: Remove an unneeded semicolon
  EDAC/igen6: Add more Intel Panther Lake-H SoCs support
  EDAC/igen6: Make masks of {MCHBAR, TOM, TOUUD, ECC_ERROR_LOG} configurable
  EDAC/igen6: Add two Intel Amston Lake SoCs support
  EDAC/i5400: Fix snprintf() limit calculation in calculate_dimm_size()
  EDAC/i5000: Fix snprintf() size calculation in calculate_dimm_size()
APEI/GHES: ARM processor Error: don't go past allocated memory 2026-01-14T16:03:29+00:00 Mauro Carvalho Chehab mchehab+huawei@kernel.org 2026-01-08T11:35:03+00:00 87880af2d24e62a84ed19943dbdd524f097172f2 If the BIOS generates a very small ARM Processor Error, or an incomplete one, the current logic will fail to deferrence err->section_length and ctx_info->size Add checks to avoid that. With such changes, such GHESv2 records won't cause OOPSes like this: [ 1.492129] Internal error: Oops: 0000000096000005 [#1] SMP [ 1.495449] Modules linked in: [ 1.495820] CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted 6.18.0-rc1-00017-gabadcc3553dd-dirty #18 PREEMPT [ 1.496125] Hardware name: QEMU QEMU Virtual Machine, BIOS unknown 02/02/2022 [ 1.496433] Workqueue: kacpi_notify acpi_os_execute_deferred [ 1.496967] pstate: 814000c5 (Nzcv daIF +PAN -UAO -TCO +DIT -SSBS BTYPE=--) [ 1.497199] pc : log_arm_hw_error+0x5c/0x200 [ 1.497380] lr : ghes_handle_arm_hw_error+0x94/0x220 0xffff8000811c5324 is in log_arm_hw_error (../drivers/ras/ras.c:75). 70 err_info = (struct cper_arm_err_info *)(err + 1); 71 ctx_info = (struct cper_arm_ctx_info *)(err_info + err->err_info_num); 72 ctx_err = (u8 *)ctx_info; 73 74 for (n = 0; n < err->context_info_num; n++) { 75 sz = sizeof(struct cper_arm_ctx_info) + ctx_info->size; 76 ctx_info = (struct cper_arm_ctx_info *)((long)ctx_info + sz); 77 ctx_len += sz; 78 } 79 and similar ones while trying to access section_length on an error dump with too small size. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Hanjun Guo <guohanjun@huawei.com> [ rjw: Subject tweaks ] Link: https://patch.msgid.link/7fd9f38413be05ee2d7cfdb0dc31ea2274cf1a54.1767871950.git.mchehab+huawei@kernel.org Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> 
If the BIOS generates a very small ARM Processor Error, or
an incomplete one, the current logic will fail to deferrence

	err->section_length
and
	ctx_info->size

Add checks to avoid that. With such changes, such GHESv2
records won't cause OOPSes like this:

[    1.492129] Internal error: Oops: 0000000096000005 [#1]  SMP
[    1.495449] Modules linked in:
[    1.495820] CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted 6.18.0-rc1-00017-gabadcc3553dd-dirty #18 PREEMPT
[    1.496125] Hardware name: QEMU QEMU Virtual Machine, BIOS unknown 02/02/2022
[    1.496433] Workqueue: kacpi_notify acpi_os_execute_deferred
[    1.496967] pstate: 814000c5 (Nzcv daIF +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
[    1.497199] pc : log_arm_hw_error+0x5c/0x200
[    1.497380] lr : ghes_handle_arm_hw_error+0x94/0x220

0xffff8000811c5324 is in log_arm_hw_error (../drivers/ras/ras.c:75).
70		err_info = (struct cper_arm_err_info *)(err + 1);
71		ctx_info = (struct cper_arm_ctx_info *)(err_info + err->err_info_num);
72		ctx_err = (u8 *)ctx_info;
73
74		for (n = 0; n < err->context_info_num; n++) {
75			sz = sizeof(struct cper_arm_ctx_info) + ctx_info->size;
76			ctx_info = (struct cper_arm_ctx_info *)((long)ctx_info + sz);
77			ctx_len += sz;
78		}
79

and similar ones while trying to access section_length on an
error dump with too small size.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Hanjun Guo <guohanjun@huawei.com>
[ rjw: Subject tweaks ]
Link: https://patch.msgid.link/7fd9f38413be05ee2d7cfdb0dc31ea2274cf1a54.1767871950.git.mchehab+huawei@kernel.org
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
RAS/AMD/ATL: Remove an unneeded semicolon 2025-12-29T14:30:02+00:00 Chen Ni nichen@iscas.ac.cn 2024-07-01T07:21:18+00:00 0923a618a78fe4e329d79d6d50f8db2620845d39 Remove an unneeded semicolon. No functional changes. Detected by Coccinelle. Signed-off-by: Chen Ni <nichen@iscas.ac.cn> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://patch.msgid.link/20240701072118.846277-1-nichen@iscas.ac.cn 
Remove an unneeded semicolon. No functional changes.

Detected by Coccinelle.

Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://patch.msgid.link/20240701072118.846277-1-nichen@iscas.ac.cn
Merge tag 'efi-next-for-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi 2025-12-05T01:10:08+00:00 Linus Torvalds torvalds@linux-foundation.org 2025-12-05T01:10:08+00:00 b1dd1e2f3e4ed970949ab4bb982bb0165f3e979d Pull EFI updates from Ard Biesheuvel: "The usual trickle of EFI contributions: - Parse SMBIOS tables in memory directly on Macbooks that do not implement the EFI SMBIOS protocol - Obtain EDID information from the primary display while running in the EFI stub, and expose it via bootparams on x86 (generic method is in the works, and will likely land during the next cycle) - Bring CPER handling for ARM systems up to data with the latest EFI spec changes - Various cosmetic changes" * tag 'efi-next-for-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi: docs: efi: add CPER functions to driver-api efi/cper: align ARM CPER type with UEFI 2.9A/2.10 specs efi/cper: Add a new helper function to print bitmasks efi/cper: Adjust infopfx size to accept an extra space RAS: Report all ARM processor CPER information to userspace efi/libstub: x86: Store EDID in boot_params efi/libstub: gop: Add support for reading EDID efi/libstub: gop: Initialize screen_info in helper function efi/libstub: gop: Find GOP handle instead of GOP data efi: Fix trailing whitespace in header file efi/memattr: Convert efi_memattr_init() return type to void efi: stmm: fix kernel-doc "bad line" warnings efi/riscv: Remove the useless failure return message print efistub/x86: Add fallback for SMBIOS record lookup 
Pull EFI updates from Ard Biesheuvel:
 "The usual trickle of EFI contributions:

   - Parse SMBIOS tables in memory directly on Macbooks that do not
     implement the EFI SMBIOS protocol

   - Obtain EDID information from the primary display while running in
     the EFI stub, and expose it via bootparams on x86 (generic method
     is in the works, and will likely land during the next cycle)

   - Bring CPER handling for ARM systems up to data with the latest EFI
     spec changes

   - Various cosmetic changes"

* tag 'efi-next-for-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
  docs: efi: add CPER functions to driver-api
  efi/cper: align ARM CPER type with UEFI 2.9A/2.10 specs
  efi/cper: Add a new helper function to print bitmasks
  efi/cper: Adjust infopfx size to accept an extra space
  RAS: Report all ARM processor CPER information to userspace
  efi/libstub: x86: Store EDID in boot_params
  efi/libstub: gop: Add support for reading EDID
  efi/libstub: gop: Initialize screen_info in helper function
  efi/libstub: gop: Find GOP handle instead of GOP data
  efi: Fix trailing whitespace in header file
  efi/memattr: Convert efi_memattr_init() return type to void
  efi: stmm: fix kernel-doc "bad line" warnings
  efi/riscv: Remove the useless failure return message print
  efistub/x86: Add fallback for SMBIOS record lookup
Merge remote-tracking branches 'ras/edac-amd-atl', 'ras/edac-drivers' and 'ras/edac-misc' into edac-updates 2025-12-01T11:06:08+00:00 Borislav Petkov (AMD) bp@alien8.de 2025-12-01T11:06:08+00:00 e2349c5811ae642f6d948d1ee4bfc4a93566c178 Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> 
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>