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 495782550C6; Tue, 15 Apr 2025 20:47:11 +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=1744750032; cv=none; b=NJSCeY0/0PMUZhfjU9spt9lS82ltGGBleL6SXbAjg1lsNzdxHFqmF1oyos8ucNiVAkBdgd34MFGcPy+DhUgqayZSBtx103sNtpQW6n3UN8sv+M2Tuc7dYmllXtsm89bsXQ5bSwVVlA8SbqmcvzpMLikEWkAJiEJdISK4NpixRew= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744750032; c=relaxed/simple; bh=r7uM/9g94EHTRq00KXQL6go1X6wAY1HdtWiU8hwnLzg=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=c3AOkWdBBu3PT208XxGw3kjK1HoMfRsGEq/lAzCdFij6JxOrytvLqr+rfFY5VY2WNfoay/xKAKdFZzfAT6OJ0eZ29tFffQ7T0F+AZ270m2U5sT78QnWqqERqvkqPQI31EUXlENDynIB0av/ZwV8yZbXPWxu09Qm7jFcll48c3tY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Qh1G5a9X; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Qh1G5a9X" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2CD6BC4CEEB; Tue, 15 Apr 2025 20:47:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1744750031; bh=r7uM/9g94EHTRq00KXQL6go1X6wAY1HdtWiU8hwnLzg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Qh1G5a9XxCtz6MRT8Zo6lIgGHQjZxEcb0C8pOjI2UPOcx52U6ZppVxifvvVG4Gkb8 xc/3pD5slwUQdqKQB/YjtZeIYajZ31ZOKSbGSMw8JBUVe2tBpOKOdoRXaGgThJlERn LAL05IZ4b7h8lIFZqf98JsL4Y5+B9Z1wgKp9AYEIbpfSbg2kL9ZiBbSfkL7FNQd/Xj +zkE15wodl7NiyBSjGUuf8Cd0xN8Q9YgeJcJT87ASFKoADD64bwy4qv+oNn2D52Xi/ H6JGVnilmy+X88w3OOlF0JCuHaNsFS92nzfxIjiACo9pZP4E9sQglQJSM9TAVGpDhy 60oaaA2AhCvYg== From: Kees Cook To: linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-hardening@vger.kernel.org, Mostafa Saleh Cc: Kees Cook , akpm@linux-foundation.org, elver@google.com, andreyknvl@gmail.com, ryabinin.a.a@gmail.com Subject: Re: [PATCH v2] lib/test_ubsan.c: Fix panic from test_ubsan_out_of_bounds Date: Tue, 15 Apr 2025 13:46:51 -0700 Message-Id: <174475000897.3429336.4470350657359091880.b4-ty@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250415203354.4109415-1-smostafa@google.com> References: <20250415203354.4109415-1-smostafa@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit On Tue, 15 Apr 2025 20:33:54 +0000, Mostafa Saleh wrote: > Running lib_ubsan.ko on arm64 (without CONFIG_UBSAN_TRAP) panics the > kernel > > [ 31.616546] Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: test_ubsan_out_of_bounds+0x158/0x158 [test_ubsan] > [ 31.646817] CPU: 3 UID: 0 PID: 179 Comm: insmod Not tainted 6.15.0-rc2 #1 PREEMPT > [ 31.648153] Hardware name: linux,dummy-virt (DT) > [ 31.648970] Call trace: > [ 31.649345] show_stack+0x18/0x24 (C) > [ 31.650960] dump_stack_lvl+0x40/0x84 > [ 31.651559] dump_stack+0x18/0x24 > [ 31.652264] panic+0x138/0x3b4 > [ 31.652812] __ktime_get_real_seconds+0x0/0x10 > [ 31.653540] test_ubsan_load_invalid_value+0x0/0xa8 [test_ubsan] > [ 31.654388] init_module+0x24/0xff4 [test_ubsan] > [ 31.655077] do_one_initcall+0xd4/0x280 > [ 31.655680] do_init_module+0x58/0x2b4 > > [...] Applied to for-linus/hardening, thanks! [1/1] lib/test_ubsan.c: Fix panic from test_ubsan_out_of_bounds https://git.kernel.org/kees/c/7fd007c84e4b Take care, -- Kees Cook