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 7D20A34BA0A; Mon, 5 May 2025 22:39:40 +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=1746484780; cv=none; b=uha6HtbzfcXBLwbXeQd+o6idFvAbuNWFB9IeF7vDgXhoDW3FF9s8Xkz3EEo8Vm5KwFMvZBvb7+vSukbtGV6ncYZSKEKjF/+N6DvasoRucSW/akSiakKdV1C0mXu1z+Az57sssxK3CH5MPOFdjcP+qiiOxsa448/QLRS/MkLmKIM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746484780; c=relaxed/simple; bh=MPVCttLUZ6Z5MP4A3tCxoU+d/xL1p3APePi299j9y8c=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=uWsen5R3li+FRp8OOKVzu35p/4IAMtsUm6p1LJUdOxwMuVH6OrBYmNNJd+GKKzGPy4pQj0jGBPYlv9IxaQC0zRedKWxWSvgZEZKSo95xPEKvtg48sKnxagvYkVNSC1bw7SjX74AVuN5jlbKCR6znLKQstbG8aOKRm/61vDPbJtE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=g093yXm4; 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="g093yXm4" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AB0FFC4AF0C; Mon, 5 May 2025 22:39:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746484780; bh=MPVCttLUZ6Z5MP4A3tCxoU+d/xL1p3APePi299j9y8c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=g093yXm4mARMS2IcDJCM02g2NLQb/MKyYUpoidTLtnzwH/rw3XujaT542vxOBBbt+ ZqBuT8xENzPTHejOd9sjXbMCrNtrmudsf57StjEkF0Gsek6v1MiXR0cF8rHJbK/qKc QjWqZUaJzhsgSj4FTgsIIdPAhUsqlNNvf5rJTkuO/kuaVQ4IOqlZWJZG4Ee0MkCBdJ 0WNYMcpOrEQT7/Yj4KfVtDTuhv1yTi+mxjVo0RaAIMmQiK+iD1ysLuw+s4MnNLobRg KUm1OfAdKrf2tqHkEInUOUJZ07CHuvjq7M3FmKiUHTRPqUychfDiIDUuZMggcVKt3u J34e78sIjJ0IQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Pavel Begunkov , Jens Axboe , Sasha Levin , io-uring@vger.kernel.org Subject: [PATCH AUTOSEL 6.12 010/486] io_uring/msg: initialise msg request opcode Date: Mon, 5 May 2025 18:31:26 -0400 Message-Id: <20250505223922.2682012-10-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250505223922.2682012-1-sashal@kernel.org> References: <20250505223922.2682012-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.12.26 Content-Transfer-Encoding: 8bit From: Pavel Begunkov [ Upstream commit 9cc0bbdaba2a66ad90bc6ce45163b7745baffe98 ] It's risky to have msg request opcode set to garbage, so at least initialise it to nop. Later we might want to add a user inaccessible opcode for such cases. Signed-off-by: Pavel Begunkov Link: https://lore.kernel.org/r/9afe650fcb348414a4529d89f52eb8969ba06efd.1743190078.git.asml.silence@gmail.com Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin --- io_uring/msg_ring.c | 1 + 1 file changed, 1 insertion(+) diff --git a/io_uring/msg_ring.c b/io_uring/msg_ring.c index 7fd9badcfaf81..35b1b585e9cbe 100644 --- a/io_uring/msg_ring.c +++ b/io_uring/msg_ring.c @@ -94,6 +94,7 @@ static int io_msg_remote_post(struct io_ring_ctx *ctx, struct io_kiocb *req, kmem_cache_free(req_cachep, req); return -EOWNERDEAD; } + req->opcode = IORING_OP_NOP; req->cqe.user_data = user_data; io_req_set_res(req, res, cflags); percpu_ref_get(&ctx->refs); -- 2.39.5