This is a note to let you know that I've just added the patch titled
s390/traps: do not test MONITOR CALL without CONFIG_BUG
to the 5.10-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:
s390-traps-do-not-test-monitor-call-without-config_b.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit c8d8127081a6b3552fcf9ceaeab3e73ee79bd675
Author: Ilya Leoshkevich <iii@xxxxxxxxxxxxx>
Date: Fri Jul 2 15:54:55 2021 +0200
s390/traps: do not test MONITOR CALL without CONFIG_BUG
[ Upstream commit b8e9cc20b808e26329090c19ff80b7f5098e98ff ]
tinyconfig fails to boot, because without CONFIG_BUG report_bug()
always returns BUG_TRAP_TYPE_BUG, which causes mc 0,0 in
test_monitor_call() to panic. Fix by skipping the test without
CONFIG_BUG.
Signed-off-by: Ilya Leoshkevich <iii@xxxxxxxxxxxxx>
Reviewed-by: Heiko Carstens <hca@xxxxxxxxxxxxx>
Signed-off-by: Vasily Gorbik <gor@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index 8d1e8a1a97df..16934fa19069 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -272,6 +272,8 @@ static void __init test_monitor_call(void)
{
int val = 1;
+ if (!IS_ENABLED(CONFIG_BUG))
+ return;
asm volatile(
" mc 0,0\n"
"0: xgr %0,%0\n"
