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Wed, 19 Jun 2024 15:45:34 +0000 (GMT) From: Ilya Leoshkevich To: Alexander Gordeev , Alexander Potapenko , Andrew Morton , Christoph Lameter , David Rientjes , Heiko Carstens , Joonsoo Kim , Marco Elver , Masami Hiramatsu , Pekka Enberg , Steven Rostedt , Vasily Gorbik , Vlastimil Babka Cc: Christian Borntraeger , Dmitry Vyukov , Hyeonggon Yoo <42.hyeyoo@gmail.com>, kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-s390@vger.kernel.org, linux-trace-kernel@vger.kernel.org, Mark Rutland , Roman Gushchin , Sven Schnelle , Ilya Leoshkevich Subject: [PATCH v5 02/37] kmsan: Make the tests compatible with kmsan.panic=1 Date: Wed, 19 Jun 2024 17:43:37 +0200 Message-ID: <20240619154530.163232-3-iii@linux.ibm.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240619154530.163232-1-iii@linux.ibm.com> References: <20240619154530.163232-1-iii@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: RWsOexlj7_0iWLLyvnapnr06durS79vv X-Proofpoint-GUID: gZnZrvku0DfDeUyU90WAlNuPdsXG4CTD X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-06-19_02,2024-06-19_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 clxscore=1015 impostorscore=0 bulkscore=0 malwarescore=0 lowpriorityscore=0 adultscore=0 phishscore=0 suspectscore=0 mlxlogscore=999 priorityscore=1501 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2405170001 definitions=main-2406190115 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. Reviewed-by: Alexander Potapenko Signed-off-by: Ilya Leoshkevich --- mm/kmsan/kmsan_test.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/mm/kmsan/kmsan_test.c b/mm/kmsan/kmsan_test.c index 07d3a3a5a9c5..9bfd11674fe3 100644 --- a/mm/kmsan/kmsan_test.c +++ b/mm/kmsan/kmsan_test.c @@ -659,9 +659,13 @@ 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; } @@ -669,6 +673,7 @@ 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 = {