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kmsan: make the tests compatible with kmsan.panic=1

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It's useful to have both tests and kmsan.panic=1 during development, but
right now the warnings, that the tests cause, lead to kernel panics.

Temporarily set kmsan.panic=0 for the duration of the KMSAN testing.

Link: https://lkml.kernel.org/r/20240621113706.315500-3-iii@linux.ibm.com
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Alexander Potapenko <glider@google.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: <kasan-dev@googlegroups.com>
Cc: Marco Elver <elver@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Steven Rostedt (Google) <rostedt@goodmis.org>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Ilya Leoshkevich 2024-06-21 13:34:46 +02:00 committed by Andrew Morton
parent c02525a339
commit 7d1c8e99b2
1 changed files with 5 additions and 0 deletions
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5
mm/kmsan/kmsan_test.c
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@ -686,9 +686,13 @@ static void test_exit(struct kunit *test)
{
}
static int orig_panic_on_kmsan;
static int kmsan_suite_init(struct kunit_suite *suite)
{
register_trace_console(probe_console, NULL);
orig_panic_on_kmsan = panic_on_kmsan;
panic_on_kmsan = 0;
return 0;
}
@ -696,6 +700,7 @@ static void kmsan_suite_exit(struct kunit_suite *suite)
{
unregister_trace_console(probe_console, NULL);
tracepoint_synchronize_unregister();
panic_on_kmsan = orig_panic_on_kmsan;
}
static struct kunit_suite kmsan_test_suite = {