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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 <lszubowi@redhat.com>
Signed-off-by: David Arcari <darcari@redhat.com>
Tested-by: Tyler Baicar <baicar.tyler@gmail.com>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Lenny Szubowicz 2018-12-19 11:50:52 -05:00 committed by Rafael J. Wysocki
parent 0c166c3ded
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;