| From | Sasha Levin <> | Subject | [PATCH AUTOSEL 5.12 100/102] s390/traps: do not test MONITOR CALL without CONFIG_BUG | Date | Wed, 14 Jul 2021 15:40:33 -0400 |
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From: Ilya Leoshkevich <iii@linux.ibm.com>
[ 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@linux.ibm.com> Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Sasha Levin <sashal@kernel.org> --- arch/s390/kernel/traps.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c index db7dd59b570c..c1b8d9170ba3 100644 --- a/arch/s390/kernel/traps.c +++ b/arch/s390/kernel/traps.c @@ -276,6 +276,8 @@ 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" -- 2.30.2
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