This is a note to let you know that I've just added the patch titled
x86/mce: Make sure logged MCEs are processed after sysfs update
to the 6.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
x86-mce-make-sure-logged-mces-are-processed-after-sysfs-update.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 4783b9cb374af02d49740e00e2da19fd4ed6dec4 Mon Sep 17 00:00:00 2001
From: Yazen Ghannam <yazen.ghannam@xxxxxxx>
Date: Wed, 1 Mar 2023 22:14:20 +0000
Subject: x86/mce: Make sure logged MCEs are processed after sysfs update
From: Yazen Ghannam <yazen.ghannam@xxxxxxx>
commit 4783b9cb374af02d49740e00e2da19fd4ed6dec4 upstream.
A recent change introduced a flag to queue up errors found during
boot-time polling. These errors will be processed during late init once
the MCE subsystem is fully set up.
A number of sysfs updates call mce_restart() which goes through a subset
of the CPU init flow. This includes polling MCA banks and logging any
errors found. Since the same function is used as boot-time polling,
errors will be queued. However, the system is now past late init, so the
errors will remain queued until another error is found and the workqueue
is triggered.
Call mce_schedule_work() at the end of mce_restart() so that queued
errors are processed.
Fixes: 3bff147b187d ("x86/mce: Defer processing of early errors")
Signed-off-by: Yazen Ghannam <yazen.ghannam@xxxxxxx>
Signed-off-by: Borislav Petkov (AMD) <bp@xxxxxxxxx>
Reviewed-by: Tony Luck <tony.luck@xxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/r/20230301221420.2203184-1-yazen.ghannam@xxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/x86/kernel/cpu/mce/core.c | 1 +
1 file changed, 1 insertion(+)
--- a/arch/x86/kernel/cpu/mce/core.c
+++ b/arch/x86/kernel/cpu/mce/core.c
@@ -2365,6 +2365,7 @@ static void mce_restart(void)
{
mce_timer_delete_all();
on_each_cpu(mce_cpu_restart, NULL, 1);
+ mce_schedule_work();
}
/* Toggle features for corrected errors */
Patches currently in stable-queue which might be from yazen.ghannam@xxxxxxx are
queue-6.2/x86-mce-make-sure-logged-mces-are-processed-after-sysfs-update.patch
