From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C5493C352AA for ; Tue, 1 Oct 2019 16:48:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8C66E20659 for ; Tue, 1 Oct 2019 16:48:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569948491; bh=x5Dh/lsFvWpy8PJRDAS+pIIwjaN0mNYgFOUG/aDqDhc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Pfc3Tc/8K6qPKen24RYkjdvFh4GhE75YL+YMNt/YY7P5JQSBh5Vl4+LNn1BoMgR/Z 9rBAvDP3kaMePZuMCm9wou1/AwR1KAbevqjd8MBzzs7SF0ywlIfYk8Jg72/C5gqbpF pKXVDqNHqjlsJnyo+6WzNTQnkBAqX6zjTYLaJNc8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388331AbfJAQsK (ORCPT ); Tue, 1 Oct 2019 12:48:10 -0400 Received: from mail.kernel.org ([198.145.29.99]:57810 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390238AbfJAQpV (ORCPT ); Tue, 1 Oct 2019 12:45:21 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3231C2168B; Tue, 1 Oct 2019 16:45:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569948321; bh=x5Dh/lsFvWpy8PJRDAS+pIIwjaN0mNYgFOUG/aDqDhc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=u6YhdkmifIJQFimhBM8y+aPlbPdKTpTsNjIcc/27hhIsslt01YPqHtDW01RgtXOo4 yLXda0jGeMKoaaC4qQu/hYKGnEkbR1stlavDnSghwrdm+X7b+HI4hMUvbmRkePpPsW T6HnOd7quDpmhNH6z1Ng9P47TKbX47rahm9M/cbY= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: zhengbin , Hulk Robot , Miklos Szeredi , Sasha Levin , linux-fsdevel@vger.kernel.org Subject: [PATCH AUTOSEL 4.9 12/19] fuse: fix memleak in cuse_channel_open Date: Tue, 1 Oct 2019 12:44:58 -0400 Message-Id: <20191001164505.16708-12-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191001164505.16708-1-sashal@kernel.org> References: <20191001164505.16708-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: zhengbin [ Upstream commit 9ad09b1976c562061636ff1e01bfc3a57aebe56b ] If cuse_send_init fails, need to fuse_conn_put cc->fc. cuse_channel_open->fuse_conn_init->refcount_set(&fc->count, 1) ->fuse_dev_alloc->fuse_conn_get ->fuse_dev_free->fuse_conn_put Fixes: cc080e9e9be1 ("fuse: introduce per-instance fuse_dev structure") Reported-by: Hulk Robot Signed-off-by: zhengbin Signed-off-by: Miklos Szeredi Signed-off-by: Sasha Levin --- fs/fuse/cuse.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/fuse/cuse.c b/fs/fuse/cuse.c index c5b6b71654893..d9aba97007267 100644 --- a/fs/fuse/cuse.c +++ b/fs/fuse/cuse.c @@ -513,6 +513,7 @@ static int cuse_channel_open(struct inode *inode, struct file *file) rc = cuse_send_init(cc); if (rc) { fuse_dev_free(fud); + fuse_conn_put(&cc->fc); return rc; } file->private_data = fud; -- 2.20.1