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 4E9051922ED; Tue, 20 May 2025 13:56:09 +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=1747749369; cv=none; b=snL4FG1PwKa9kXn5ZRAizSqWN75vkjX42KaiJMuL/hXuVqRrFmoO4fJBi/MI4uOZ3HVmsk0IoRmzMGanXGkHxr+wVAZItT5mcA27oyGa6BQVRxHVhxuYg5Iyf+BytxyeVbtdDZkG3eRhc1s2yZraleSPhnXz5L72i8HeElbFnoY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747749369; c=relaxed/simple; bh=IZ/qREx0ta4DuZnx8RRrzoNNNXkeZuZ0EoAya0mAWRE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=sr8e1Z7F1WlKeBjbdsLpfXoxC8GGOAFXpXxTa15wOXb9gSprUojQlcy58fIIkMlIImqUK2743PDVZI5lbmroCZba5ubZU4lX1OximLftc760kpWkd6MidPp7tlsjY8g7FPkHJ0zrsGQzqT42hDTKSMJBec7o6gBd10gB4VELC88= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ga7ZVIgz; 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="ga7ZVIgz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C66AAC4CEE9; Tue, 20 May 2025 13:56:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1747749369; bh=IZ/qREx0ta4DuZnx8RRrzoNNNXkeZuZ0EoAya0mAWRE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ga7ZVIgzi5rtoxpDgSO1hQWDhoI8EEaC0919jqZS/yxeUYgSl+uRpWUq/BCvBjwdb oPR/kDsK7AMgVIAVah+TlLFhH8q1mWvXgfOC4ltRdXPo4/3YouPTXaoLTexWGyvzXx yx8BnS9J5stXZhFSzLmypH9HHxLvNqG7kf7ELVCs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, liuyi , Zhu Yanjun , Daisuke Matsuda , Leon Romanovsky , Sasha Levin Subject: [PATCH 6.1 22/97] RDMA/rxe: Fix slab-use-after-free Read in rxe_queue_cleanup bug Date: Tue, 20 May 2025 15:49:47 +0200 Message-ID: <20250520125801.536128406@linuxfoundation.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250520125800.653047540@linuxfoundation.org> References: <20250520125800.653047540@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Zhu Yanjun [ Upstream commit f81b33582f9339d2dc17c69b92040d3650bb4bae ] Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x7d/0xa0 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xcf/0x610 mm/kasan/report.c:489 kasan_report+0xb5/0xe0 mm/kasan/report.c:602 rxe_queue_cleanup+0xd0/0xe0 drivers/infiniband/sw/rxe/rxe_queue.c:195 rxe_cq_cleanup+0x3f/0x50 drivers/infiniband/sw/rxe/rxe_cq.c:132 __rxe_cleanup+0x168/0x300 drivers/infiniband/sw/rxe/rxe_pool.c:232 rxe_create_cq+0x22e/0x3a0 drivers/infiniband/sw/rxe/rxe_verbs.c:1109 create_cq+0x658/0xb90 drivers/infiniband/core/uverbs_cmd.c:1052 ib_uverbs_create_cq+0xc7/0x120 drivers/infiniband/core/uverbs_cmd.c:1095 ib_uverbs_write+0x969/0xc90 drivers/infiniband/core/uverbs_main.c:679 vfs_write fs/read_write.c:677 [inline] vfs_write+0x26a/0xcc0 fs/read_write.c:659 ksys_write+0x1b8/0x200 fs/read_write.c:731 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xaa/0x1b0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f In the function rxe_create_cq, when rxe_cq_from_init fails, the function rxe_cleanup will be called to handle the allocated resources. In fact, some memory resources have already been freed in the function rxe_cq_from_init. Thus, this problem will occur. The solution is to let rxe_cleanup do all the work. Fixes: 8700e3e7c485 ("Soft RoCE driver") Link: https://paste.ubuntu.com/p/tJgC42wDf6/ Tested-by: liuyi Signed-off-by: Zhu Yanjun Link: https://patch.msgid.link/20250412075714.3257358-1-yanjun.zhu@linux.dev Reviewed-by: Daisuke Matsuda Signed-off-by: Leon Romanovsky Signed-off-by: Sasha Levin --- drivers/infiniband/sw/rxe/rxe_cq.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/infiniband/sw/rxe/rxe_cq.c b/drivers/infiniband/sw/rxe/rxe_cq.c index b1a0ab3cd4bd1..43dfc6fd8a3ed 100644 --- a/drivers/infiniband/sw/rxe/rxe_cq.c +++ b/drivers/infiniband/sw/rxe/rxe_cq.c @@ -71,11 +71,8 @@ int rxe_cq_from_init(struct rxe_dev *rxe, struct rxe_cq *cq, int cqe, err = do_mmap_info(rxe, uresp ? &uresp->mi : NULL, udata, cq->queue->buf, cq->queue->buf_size, &cq->queue->ip); - if (err) { - vfree(cq->queue->buf); - kfree(cq->queue); + if (err) return err; - } cq->is_user = uresp; -- 2.39.5