linux-kernel - [PATCH AUTOSEL 5.15 18/36] quota: make dquot_quota_sync return errors from ->sync

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20220209183759.47134-18-sashal@kernel.org>
Date:   Wed,  9 Feb 2022 13:37:41 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     "Darrick J. Wong" <djwong@...nel.org>, Jan Kara <jack@...e.cz>,
        Christoph Hellwig <hch@....de>,
        Christian Brauner <brauner@...nel.org>,
        Sasha Levin <sashal@...nel.org>, jack@...e.com
Subject: [PATCH AUTOSEL 5.15 18/36] quota: make dquot_quota_sync return errors from ->sync_fs

From: "Darrick J. Wong" <djwong@...nel.org>

[ Upstream commit dd5532a4994bfda0386eb2286ec00758cee08444 ]

Strangely, dquot_quota_sync ignores the return code from the ->sync_fs
call, which means that quotacalls like Q_SYNC never see the error.  This
doesn't seem right, so fix that.

Signed-off-by: Darrick J. Wong <djwong@...nel.org>
Reviewed-by: Jan Kara <jack@...e.cz>
Reviewed-by: Christoph Hellwig <hch@....de>
Acked-by: Christian Brauner <brauner@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 fs/quota/dquot.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index 22d904bde6ab9..a74aef99bd3d6 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -690,9 +690,14 @@ int dquot_quota_sync(struct super_block *sb, int type)
 	/* This is not very clever (and fast) but currently I don't know about
 	 * any other simple way of getting quota data to disk and we must get
 	 * them there for userspace to be visible... */
-	if (sb->s_op->sync_fs)
-		sb->s_op->sync_fs(sb, 1);
-	sync_blockdev(sb->s_bdev);
+	if (sb->s_op->sync_fs) {
+		ret = sb->s_op->sync_fs(sb, 1);
+		if (ret)
+			return ret;
+	}
+	ret = sync_blockdev(sb->s_bdev);
+	if (ret)
+		return ret;
 
 	/*
 	 * Now when everything is written we can discard the pagecache so
-- 
2.34.1