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 49FF06FAF for ; Mon, 28 Aug 2023 10:15:09 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BA7B6C433C8; Mon, 28 Aug 2023 10:15:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1693217709; bh=/j370p9/EH8BB2KY7tM8Az23JwXMmYVLN5QivVHZ3gQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WSd6aWXP8l8TmWr116D85twix1j3Y1myl5+fQ1lchwCZYhXr+9BqKi5C3hzHuMfX/ XiXL7M012wgN9DFi407jvEikcDuP4E5nPF7ir97Zquab6YHJCSkcgy4ETyH4i8NeCR vg3UJ3o0a2pgWaUrcgyA8sDWzxSLJLOk74Fn1dtE= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, syzbot+e633c79ceaecbf479854@syzkaller.appspotmail.com, Jan Kara , Sasha Levin , Ye Bin Subject: [PATCH 4.14 04/57] quota: Properly disable quotas when add_dquot_ref() fails Date: Mon, 28 Aug 2023 12:12:24 +0200 Message-ID: <20230828101144.364240155@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230828101144.231099710@linuxfoundation.org> References: <20230828101144.231099710@linuxfoundation.org> User-Agent: quilt/0.67 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 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jan Kara [ Upstream commit 6a4e3363792e30177cc3965697e34ddcea8b900b ] When add_dquot_ref() fails (usually due to IO error or ENOMEM), we want to disable quotas we are trying to enable. However dquot_disable() call was passed just the flags we are enabling so in case flags == DQUOT_USAGE_ENABLED dquot_disable() call will just fail with EINVAL instead of properly disabling quotas. Fix the problem by always passing DQUOT_LIMITS_ENABLED | DQUOT_USAGE_ENABLED to dquot_disable() in this case. Reported-and-tested-by: Ye Bin Reported-by: syzbot+e633c79ceaecbf479854@syzkaller.appspotmail.com Signed-off-by: Jan Kara Message-Id: <20230605140731.2427629-2-yebin10@huawei.com> Signed-off-by: Sasha Levin --- fs/quota/dquot.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index 7c364cda8daac..1cbec5dde5830 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -2387,7 +2387,8 @@ static int vfs_load_quota_inode(struct inode *inode, int type, int format_id, error = add_dquot_ref(sb, type); if (error) - dquot_disable(sb, type, flags); + dquot_disable(sb, type, + DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED); return error; out_file_init: -- 2.40.1