diff options
| author | Jan Kara <jack@suse.cz> | 2023-06-05 22:07:30 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-07-27 08:50:32 +0200 |
| commit | 1f2ec87f4ab833d56053f41cbf8febca7c9b264c (patch) | |
| tree | 1d13aa5653cbbe4e366824d5f83fb2ebe7adc411 /fs/quota | |
| parent | 2a97ec78092fd3e5dd7013b6fa88b8923ebaa15f (diff) | |
quota: Properly disable quotas when add_dquot_ref() fails
[ 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 <yebin10@huawei.com>
Reported-by: syzbot+e633c79ceaecbf479854@syzkaller.appspotmail.com
Signed-off-by: Jan Kara <jack@suse.cz>
Message-Id: <20230605140731.2427629-2-yebin10@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'fs/quota')
| -rw-r--r-- | fs/quota/dquot.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index f27faf5db554..8181adcddf0d 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -2420,7 +2420,8 @@ int dquot_load_quota_sb(struct super_block *sb, 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_fmt: |