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ACPI: extlog: Clear Extended Error Log status when RAS_CEC handled the error 

When both CONFIG_RAS_CEC and CONFIG_ACPI_EXTLOG are enabled, Linux does
not clear the status word of the BIOS supplied error record for corrected
errors. This may prevent logging of subsequent uncorrected errors.

Fix by clearing the status.

Fixes: 23ba710a08 ("x86/mce: Fix all mce notifiers to update the mce->kflags bitmask")
Reported-by: Erwin Tsaur <erwin.tsaur@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Tony Luck 2023-12-12 13:22:39 -08:00 committed by Rafael J. Wysocki
parent 72d9b9747e
commit 38c872a9e9
1 changed files with 6 additions and 1 deletions
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7
drivers/acpi/acpi_extlog.c
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@ -145,9 +145,14 @@ static int extlog_print(struct notifier_block *nb, unsigned long val,
static u32 err_seq;
estatus = extlog_elog_entry_check(cpu, bank);
if (estatus == NULL || (mce->kflags & MCE_HANDLED_CEC))
if (!estatus)
return NOTIFY_DONE;
if (mce->kflags & MCE_HANDLED_CEC) {
estatus->block_status = 0;
return NOTIFY_DONE;
}
memcpy(elog_buf, (void *)estatus, ELOG_ENTRY_LEN);
/* clear record status to enable BIOS to update it again */
estatus->block_status = 0;