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| author | Breno Leitao <leitao@debian.org> | 2025-07-02 08:39:51 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-28 16:28:17 +0200 |
| commit | d9d611639beab4dd0322b714f58d0fe0f46104c3 (patch) | |
| tree | ce9adbbd16a2000f0e1039ffdbc3ffabfd1eb432 /drivers/acpi | |
| parent | d3dd520206bdcf327d16c30645663f91ee1b68ce (diff) | |
| download | linux-d9d611639beab4dd0322b714f58d0fe0f46104c3.tar.gz linux-d9d611639beab4dd0322b714f58d0fe0f46104c3.tar.bz2 linux-d9d611639beab4dd0322b714f58d0fe0f46104c3.zip | |
ACPI: APEI: GHES: add TAINT_MACHINE_CHECK on GHES panic path
[ Upstream commit 4734c8b46b901cff2feda8b82abc710b65dc31c1 ]
When a GHES (Generic Hardware Error Source) triggers a panic, add the
TAINT_MACHINE_CHECK taint flag to the kernel. This explicitly marks the
kernel as tainted due to a machine check event, improving diagnostics
and post-mortem analysis. The taint is set with LOCKDEP_STILL_OK to
indicate lockdep remains valid.
At large scale deployment, this helps to quickly determine panics that
are coming due to hardware failures.
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Link: https://patch.msgid.link/20250702-add_tain-v1-1-9187b10914b9@debian.org
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/apei/ghes.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c index 22db720b128b..ec364c254112 100644 --- a/drivers/acpi/apei/ghes.c +++ b/drivers/acpi/apei/ghes.c @@ -912,6 +912,8 @@ static void __ghes_panic(struct ghes *ghes, __ghes_print_estatus(KERN_EMERG, ghes->generic, estatus); + add_taint(TAINT_MACHINE_CHECK, LOCKDEP_STILL_OK); + ghes_clear_estatus(ghes, estatus, buf_paddr, fixmap_idx); if (!panic_timeout) |