[PATCH] mce: fix missing stack-dumping in mce_panic()
From: Miaohe Lin
Date: Fri Dec 02 2022 - 03:42:59 EST
When machine check exception occurs, there is no stack-dumping now in
mce_panic(). It's because bust_spinlocks(1) is called prematurely so
oops_in_progress will be >= 2 when trying to call dump_stack() in
panic(). Thus dump_stack() won't be called as this is considered as
nested stack-dumping.
Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
---
arch/x86/kernel/cpu/mce/core.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c
index 2c8ec5c71712..c40dad1a6749 100644
--- a/arch/x86/kernel/cpu/mce/core.c
+++ b/arch/x86/kernel/cpu/mce/core.c
@@ -254,7 +254,6 @@ static noinstr void mce_panic(const char *msg, struct mce *final, char *exp)
wait_for_panic();
barrier();
- bust_spinlocks(1);
console_verbose();
} else {
/* Don't log too much for fake panic */
--
2.23.0