From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 39A6F13DDAA; Thu, 28 Aug 2025 05:46:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756359977; cv=none; b=C094vMAGwrRQTt623ER19WHTnH/KlmhW8egDR34AfHZviotqaa15k6tRDxW5z0nyhA0jAm2Ghawi+wc2p9ziAc2XGGRzQM6HyWlOPgZLG30XQBp7pA+MKph+poSRjknjJrj0wlRo4s7B99lTymYOBiasnk9yopO4Otjm+keGM6s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756359977; c=relaxed/simple; bh=3fOb2+o6PmfqNXMY3ECAyyOTBDI7BBROTvDBvqLQuj4=; h=Date:To:From:Subject:Message-Id; b=WadYqRAnZqNVAFnuNgyaVQfb831UwOIEjgzkLbg1sknH2HoJUw58cM588sOrAkfw74TBNbCtwuW9dwBeNF8J+S7MJwsW2ysihUGBlHQGveF/si8bH6INqlJ6xBx57GCXJWD8rAr+dcjHhhWYVYP3CfNAnuQUBEqRJqpK15vhPqI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=ajdeyGw/; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="ajdeyGw/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C1155C4CEEB; Thu, 28 Aug 2025 05:46:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1756359976; bh=3fOb2+o6PmfqNXMY3ECAyyOTBDI7BBROTvDBvqLQuj4=; h=Date:To:From:Subject:From; b=ajdeyGw/ZsAhbMcMNfdF3l2MH3LkPblt9FVWi38FAbGLkKYS9s4UUAr/j89Yo5RvC pf1qSY3W+edQ1tx/ecKoiH+weAW5andwZw/ToWplURZlx57pYQBaxE6nSY5F4fmUOt Hwj0aoQpwSJdu5o29jFxmJoT7+jN5PQzYhQRoTUw= Date: Wed, 27 Aug 2025 22:46:16 -0700 To: mm-commits@vger.kernel.org,vincenzo.frascino@arm.com,stable@vger.kernel.org,ryabinin.a.a@gmail.com,glider@google.com,dvyukov@google.com,andreyknvl@gmail.com,yeoreum.yun@arm.com,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-hotfixes-stable] kunit-kasan_test-disable-fortify-string-checker-on-kasan_strings-test.patch removed from -mm tree Message-Id: <20250828054616.C1155C4CEEB@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: kunit: kasan_test: disable fortify string checker on kasan_strings() test has been removed from the -mm tree. Its filename was kunit-kasan_test-disable-fortify-string-checker-on-kasan_strings-test.patch This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Yeoreum Yun Subject: kunit: kasan_test: disable fortify string checker on kasan_strings() test Date: Fri, 1 Aug 2025 13:02:36 +0100 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 Cc: Alexander Potapenko Cc: Andrey Konovalov Cc: Andrey Ryabinin Cc: Dmitriy Vyukov Cc: Vincenzo Frascino Cc: Signed-off-by: Andrew Morton --- mm/kasan/kasan_test_c.c | 2 ++ 1 file changed, 2 insertions(+) --- a/mm/kasan/kasan_test_c.c~kunit-kasan_test-disable-fortify-string-checker-on-kasan_strings-test +++ a/mm/kasan/kasan_test_c.c @@ -1578,9 +1578,11 @@ static void kasan_strings(struct kunit * ptr = kmalloc(size, GFP_KERNEL | __GFP_ZERO); KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr); + OPTIMIZER_HIDE_VAR(ptr); src = kmalloc(KASAN_GRANULE_SIZE, GFP_KERNEL | __GFP_ZERO); strscpy(src, "f0cacc1a0000000", KASAN_GRANULE_SIZE); + OPTIMIZER_HIDE_VAR(src); /* * Make sure that strscpy() does not trigger KASAN if it overreads into _ Patches currently in -mm which might be from yeoreum.yun@arm.com are kasan-hw-tags-introduce-kasanwrite_only-option.patch kasan-apply-write-only-mode-in-kasan-kunit-testcases.patch