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 7AF743328E1; Mon, 29 Dec 2025 16:30:31 +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=1767025831; cv=none; b=RC6oNtJdVtOSf4YEy1hcbWI0z88vTQ0vYo1Ap22JVqmhFI4bHXjoZH0gFyxpY/H9wKVd82fzbZ9i+QVvMagQdnQjuLO8apDD9qspqOJZRdS3tU2OrwAbn8TDh3s1n2qp/jnTtxj6gedrzEK0sr9+1hfNAzaFEdJWa06ksjQ3Hw4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767025831; c=relaxed/simple; bh=G0o8CmFdB/CkmnzHuVnRDzy0UvURe6ex+g2+Fvr7tB8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=U4qzwd0Z53+gSHC+aeHzPra3mejlrj/jpYNA9cAB/hV/Am3Sfs3XU1Bx2gSBhBkNnx8y73c7MvBN9I9LTaNPbUEsCAwmnjcoJdFIw5tw+6qTKkGkpW2v/yL7WHaeDQrCG5WNZQ4XFl42OnkTavbeJpBzX1hi9FvFhysLBC1wmsk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=dkTZFCXL; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="dkTZFCXL" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 03999C4CEF7; Mon, 29 Dec 2025 16:30:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1767025831; bh=G0o8CmFdB/CkmnzHuVnRDzy0UvURe6ex+g2+Fvr7tB8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dkTZFCXL3OJdtGnuAMNhjYiTunUtIVjh4V7zsKsP0neE5i0hItCBD3dPmjlXeF4z9 3zlGCcdnoSruCFtZSk2o/XyJUXYpCn2noN0EnS93i00DRcZbGlYuh4SlvWVHGXBUvW E8q5KBQUR/VA+7ZxH/eHvjyicnYaUX1yk3dMo4G8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Gavin Shan , Sean Christopherson Subject: [PATCH 6.18 353/430] KVM: selftests: Add missing "break" in rseq_tests param parsing Date: Mon, 29 Dec 2025 17:12:35 +0100 Message-ID: <20251229160737.316117091@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20251229160724.139406961@linuxfoundation.org> References: <20251229160724.139406961@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Gavin Shan commit 1b9439c933b500cb24710bbd81fe56e9b0025b6f upstream. In commit 0297cdc12a87 ("KVM: selftests: Add option to rseq test to override /dev/cpu_dma_latency"), a 'break' is missed before the option 'l' in the argument parsing loop, which leads to an unexpected core dump in atoi_paranoid(). It tries to get the latency from non-existent argument. host$ ./rseq_test -u Random seed: 0x6b8b4567 Segmentation fault (core dumped) Add a 'break' before the option 'l' in the argument parsing loop to avoid the unexpected core dump. Fixes: 0297cdc12a87 ("KVM: selftests: Add option to rseq test to override /dev/cpu_dma_latency") Cc: stable@vger.kernel.org # v6.15+ Signed-off-by: Gavin Shan Link: https://patch.msgid.link/20251124050427.1924591-1-gshan@redhat.com [sean: describe code change in shortlog] Signed-off-by: Sean Christopherson Signed-off-by: Greg Kroah-Hartman --- tools/testing/selftests/kvm/rseq_test.c | 1 + 1 file changed, 1 insertion(+) --- a/tools/testing/selftests/kvm/rseq_test.c +++ b/tools/testing/selftests/kvm/rseq_test.c @@ -215,6 +215,7 @@ int main(int argc, char *argv[]) switch (opt) { case 'u': skip_sanity_check = true; + break; case 'l': latency = atoi_paranoid(optarg); break;