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ACPI/APEI: Clear GHES block_status before panic()

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In __ghes_panic() clear the block status in the APEI generic
error status block for that generic hardware error source before
calling panic() to prevent a second panic() in the crash kernel
for exactly the same fatal error.

Otherwise ghes_probe(), running in the crash kernel, would see
an unhandled error in the APEI generic error status block and
panic again, thereby precluding any crash dump.

Signed-off-by: Lenny Szubowicz <[email protected]>
Signed-off-by: David Arcari <[email protected]>
Tested-by: Tyler Baicar <[email protected]>
Acked-by: Borislav Petkov <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
This commit is contained in:
Lenny Szubowicz 2018-12-19 11:50:52 -05:00 • committed by Rafael J. Wysocki
commit 98cff8b23e
1 changed files with 2 additions and 0 deletions
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2
drivers/acpi/apei/ghes.c
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@ -691,6 +691,8 @@ static void __ghes_panic(struct ghes *ghes)
{
__ghes_print_estatus(KERN_EMERG, ghes->generic, ghes->estatus);
ghes_clear_estatus(ghes);
/* reboot to log the error! */
if (!panic_timeout)
panic_timeout = ghes_panic_timeout;