diff options
| author | Filipe Manana <fdmanana@suse.com> | 2017-04-03 15:57:17 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-24 11:00:16 +0100 |
| commit | dfe9db1d7d40d277e79746bbcfc3046f64d57ba0 (patch) | |
| tree | 1d906ec4a9575e7e81687f6e1309144a8a5e3f43 /fs | |
| parent | 7016b20cab9b6e7e6d898355ea43eb07ecae14ad (diff) | |
Btrfs: fix extent map leak during fallocate error path
[ Upstream commit be2d253cc98244765323a7c94cc1ac5cd5a17072 ]
If the call to btrfs_qgroup_reserve_data() failed, we were leaking an
extent map structure. The failure can happen either due to an -ENOMEM
condition or, when quotas are enabled, due to -EDQUOT for example.
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/file.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 3286a6e47ff0..c95ff096cd24 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -2817,8 +2817,10 @@ static long btrfs_fallocate(struct file *file, int mode, } ret = btrfs_qgroup_reserve_data(inode, cur_offset, last_byte - cur_offset); - if (ret < 0) + if (ret < 0) { + free_extent_map(em); break; + } } else { /* * Do not need to reserve unwritten extent for this |