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Aubrey Li bef994de99 ACPI: PRM: Remove unnecessary strict handler address checks 
commit 7f5704b6a1 upstream.

Commit 088984c8d5 ("ACPI: PRM: Find EFI_MEMORY_RUNTIME block for PRM
handler and context") added unnecessary strict handler address checks,
causing the PRM module to fail in translating memory error addresses.

Both static data buffer address and ACPI parameter buffer address may
be NULL if they are not needed, as described in section 4.1.2 PRM Handler
Information Structure of Platform Runtime Mechanism specification [1].

Here are two examples from real hardware:

----PRMT.dsl----

- staic data address is not used
[10Ch 0268   2]                     Revision : 0000
[10Eh 0270   2]                       Length : 002C
[110h 0272  16]                 Handler GUID : F6A58D47-E04F-4F5A-86B8-2A50D4AA109B
[120h 0288   8]              Handler address : 0000000065CE51F4
[128h 0296   8]           Satic Data Address : 0000000000000000
[130h 0304   8]       ACPI Parameter Address : 000000006522A718

- ACPI parameter address is not used
[1B0h 0432   2]                     Revision : 0000
[1B2h 0434   2]                       Length : 002C
[1B4h 0436  16]                 Handler GUID : 657E8AE6-A8FC-4877-BB28-42E7DE1899A5
[1C4h 0452   8]              Handler address : 0000000065C567C8
[1CCh 0460   8]           Satic Data Address : 000000006113FB98
[1D4h 0468   8]       ACPI Parameter Address : 0000000000000000

Fixes: 088984c8d5 ("ACPI: PRM: Find EFI_MEMORY_RUNTIME block for PRM handler and context")
Reported-and-tested-by: Shi Liu <aurelianliu@tencent.com>
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Aubrey Li <aubrey.li@linux.intel.com>
Link: https://uefi.org/sites/default/files/resources/Platform%20Runtime%20Mechanism%20-%20with%20legal%20notice.pdf # [1]
Reviewed-by: Koba Ko <kobak@nvidia.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://patch.msgid.link/20250126022250.3014210-1-aubrey.li@linux.intel.com
[ rjw: Minor changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2025-02-17 10:05:30 +01:00
arch parisc: Temporarily disable jump label support 2025-02-17 10:05:29 +01:00
block block: don't revert iter for -EIOCBQUEUED 2025-02-17 10:05:19 +01:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto crypto: api - Fix boot-up self-test race 2025-02-08 09:57:28 +01:00
Documentation arm64: Filter out SVE hwcaps when FEAT_SVE isn't implemented 2025-02-17 10:05:04 +01:00
drivers ACPI: PRM: Remove unnecessary strict handler address checks 2025-02-17 10:05:30 +01:00
fs xfs: Add error handling for xfs_reflink_cancel_cow_range 2025-02-17 10:05:30 +01:00
include scsi: ufs: core: Fix use-after free in init error and remove paths 2025-02-17 10:05:22 +01:00
init Compiler Attributes: disable __counted_by for clang < 19.1.3 2024-12-05 14:02:45 +01:00
io_uring io_uring/uring_cmd: use cached cmd_op in io_uring_cmd_sock() 2025-02-08 09:58:10 +01:00
ipc ipc: fix memleak if msg_init_ns failed in create_ipc_ns 2024-12-05 14:03:02 +01:00
kernel ring-buffer: Do not allow events in NMI with generic atomic64 cmpxchg() 2025-02-17 10:05:14 +01:00
lib atomic64: Use arch_spin_locks instead of raw_spin_locks 2025-02-17 10:05:14 +01:00
LICENSES LICENSES: add 0BSD license text 2024-09-01 20:43:24 -07:00
mm memcg: fix soft lockup in the OOM process 2025-02-08 09:58:19 +01:00
net Bluetooth: L2CAP: accept zero as a special value for MTU auto-selection 2025-02-17 10:05:09 +01:00
rust rust: init: use explicit ABI to clean warning in future compilers 2025-02-17 10:05:23 +01:00
samples samples/landlock: Fix possible NULL dereference in parse_path() 2025-02-08 09:57:11 +01:00
scripts x86: rust: set rustc-abi=x86-softfloat on rustc>=1.86.0 2025-02-17 10:05:23 +01:00
security KEYS: trusted: dcp: fix improper sg use with CONFIG_VMAP_STACK=y 2025-02-17 10:05:09 +01:00
sound ALSA: hda: Fix headset detection failure due to unstable sort 2025-02-17 10:05:20 +01:00
tools perf bench: Fix undefined behavior in cmpworker() 2025-02-17 10:05:12 +01:00
usr initramfs: shorten cmd_initfs in usr/Makefile 2024-07-16 01:07:52 +09:00
virt KVM: x86: switch hugepage recovery thread to vhost_task 2024-12-05 14:02:43 +01:00
.clang-format clang-format: Update with v6.11-rc1's for_each macro list 2024-08-02 13:20:31 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore Add Jeff Kirsher to .get_maintainer.ignore 2024-03-08 11:36:54 +00:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore Kbuild updates for v6.12 2024-09-24 13:02:06 -07:00
.mailmap mailmap: add entry for Thorsten Blum 2024-11-07 14:14:59 -08:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Remove self from DSA entry 2024-11-03 12:52:38 -08:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS MAINTAINERS: update location of media main tree 2024-12-05 14:02:42 +01:00
Makefile Linux 6.12.13 2025-02-08 09:58:20 +01:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.