diff options
| author | Breno Leitao <leitao@debian.org> | 2025-07-02 08:39:51 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-20 18:30:25 +0200 |
| commit | bdf159a294035459b9f5163b771f4ef5579a3cb3 (patch) | |
| tree | 5876422826417f4b013330299f34346184ad128f | |
| parent | 6f38d9ae4b6c857ee144586886f5a34169735a7f (diff) | |
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>
| -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 94e3d3fe11ae..91f9267c07ea 100644 --- a/drivers/acpi/apei/ghes.c +++ b/drivers/acpi/apei/ghes.c @@ -996,6 +996,8 @@ 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) |