The patch titled Subject: similar to "kasan: test: fix compatibility with FORTIFY_SOURCE" has been added to the -mm tree. Its filename is kasan-improve-vmalloc-tests-fix.patch This patch should soon appear at https://ozlabs.org/~akpm/mmots/broken-out/kasan-improve-vmalloc-tests-fix.patch and later at https://ozlabs.org/~akpm/mmotm/broken-out/kasan-improve-vmalloc-tests-fix.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> Subject: similar to "kasan: test: fix compatibility with FORTIFY_SOURCE" Link: https://lkml.kernel.org/r/20220128144801.73f5ced0@xxxxxxxxxxxxxxxx Signed-off-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> Cc: Andrey Konovalov <andreyknvl@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- lib/test_kasan.c | 2 ++ 1 file changed, 2 insertions(+) --- a/lib/test_kasan.c~kasan-improve-vmalloc-tests-fix +++ a/lib/test_kasan.c @@ -1096,6 +1096,8 @@ static void vmalloc_oob(struct kunit *te v_ptr = vmalloc(size); KUNIT_ASSERT_NOT_ERR_OR_NULL(test, v_ptr); + OPTIMIZER_HIDE_VAR(v_ptr); + /* * We have to be careful not to hit the guard page in vmalloc tests. * The MMU will catch that and crash us. _ Patches currently in -mm which might be from sfr@xxxxxxxxxxxxxxxx are kasan-improve-vmalloc-tests-fix.patch