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 0E883ECE587 for ; Tue, 1 Oct 2019 16:52:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D04E72168B for ; Tue, 1 Oct 2019 16:52:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569948739; bh=rl7ZIeGi2KWZp1Bkg/Y0Ga7FW5CfX8TJo1HQJxkG2+Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=YxYanEaiMwsIJCPe5NVMpHjDeUZavAju1CcJJElzfnhbPu/ql3eJ7SsLPMmOwWDyQ JIdcDVji/63rFM6pU5UZtqn5LsSBiLPgfCP2XdFmPh7xnHcq7uBCPm/v759Wy+bZWv LLUjH2j6CL9h1I8K83J+1nbm9NbmhfyvG3yvMquY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733088AbfJAQnw (ORCPT ); Tue, 1 Oct 2019 12:43:52 -0400 Received: from mail.kernel.org ([198.145.29.99]:56024 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733060AbfJAQnu (ORCPT ); Tue, 1 Oct 2019 12:43:50 -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 0EF4621855; Tue, 1 Oct 2019 16:43:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569948229; bh=rl7ZIeGi2KWZp1Bkg/Y0Ga7FW5CfX8TJo1HQJxkG2+Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fF6/HnCMAeVlm8/nUh3lmFhi6IAc0aOZcoFV6GvDk9mEmt3I5/x4+i3EKoU/IWUy9 o4dv+it5AdmIbtc1ophOcIJlOV5kZRt3gizkIfTZ6NXr6dM0iHjSRrM52hhpMTfpu9 x+pLvy0S7e9vnL75pg1uHcmUbcRl1cQaT4rmLU/o= 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 4.19 27/43] fuse: fix memleak in cuse_channel_open Date: Tue, 1 Oct 2019 12:42:55 -0400 Message-Id: <20191001164311.15993-27-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191001164311.15993-1-sashal@kernel.org> References: <20191001164311.15993-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@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 8f68181256c00..f057c213c453a 100644 --- a/fs/fuse/cuse.c +++ b/fs/fuse/cuse.c @@ -518,6 +518,7 @@ 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