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| author | Yeoreum Yun <yeoreum.yun@arm.com> | 2025-09-06 22:29:28 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-09-09 18:58:22 +0200 |
| commit | a7f7d4223ff0502928953cff60cf1367b416572b (patch) | |
| tree | db07b986f7895e872592eaed683792393d9cd043 | |
| parent | 607b2bf5708fe657c85271edc4dc4226323068f9 (diff) | |
kunit: kasan_test: disable fortify string checker on kasan_strings() test
Similar to commit 09c6304e38e4 ("kasan: test: fix compatibility with
FORTIFY_SOURCE") the kernel is panicing in kasan_string().
This is due to the `src` and `ptr` not being hidden from the optimizer
which would disable the runtime fortify string checker.
Call trace:
__fortify_panic+0x10/0x20 (P)
kasan_strings+0x980/0x9b0
kunit_try_run_case+0x68/0x190
kunit_generic_run_threadfn_adapter+0x34/0x68
kthread+0x1c4/0x228
ret_from_fork+0x10/0x20
Code: d503233f a9bf7bfd 910003fd 9424b243 (d4210000)
---[ end trace 0000000000000000 ]---
note: kunit_try_catch[128] exited with irqs disabled
note: kunit_try_catch[128] exited with preempt_count 1
# kasan_strings: try faulted: last
** replaying previous printk message **
# kasan_strings: try faulted: last line seen mm/kasan/kasan_test_c.c:1600
# kasan_strings: internal error occurred preventing test case from running: -4
Link: https://lkml.kernel.org/r/20250801120236.2962642-1-yeoreum.yun@arm.com
Fixes: 73228c7ecc5e ("KASAN: port KASAN Tests to KUnit")
Signed-off-by: Yeoreum Yun <yeoreum.yun@arm.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Dmitriy Vyukov <dvyukov@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: <stable@vger.kernel.org>
[ One less test in older trees ]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | mm/kasan/kasan_test_c.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/kasan/kasan_test_c.c b/mm/kasan/kasan_test_c.c index d8fb281e439d..d4ac26ad1d3e 100644 --- a/mm/kasan/kasan_test_c.c +++ b/mm/kasan/kasan_test_c.c @@ -1548,6 +1548,7 @@ static void kasan_strings(struct kunit *test) ptr = kmalloc(size, GFP_KERNEL | __GFP_ZERO); KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr); + OPTIMIZER_HIDE_VAR(ptr); kfree(ptr); |