| Message ID | 1369756044-17194-3-git-send-email-list.btrfs@jan-o-sch.net (mailing list archive) |
|---|---|
| State | Accepted, archived |
| Headers | show |
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index 74b432d..c6ce642 100644 --- a/fs/btrfs/qgroup.c +++ b/fs/btrfs/qgroup.c @@ -430,8 +430,10 @@ out: } btrfs_free_path(path); - if (ret < 0) + if (ret < 0) { ulist_free(fs_info->qgroup_ulist); + fs_info->qgroup_ulist = NULL; + } return ret < 0 ? ret : 0; } @@ -932,8 +934,10 @@ out_free_root: kfree(quota_root); } out: - if (ret) + if (ret) { ulist_free(fs_info->qgroup_ulist); + fs_info->qgroup_ulist = NULL; + } mutex_unlock(&fs_info->qgroup_ioctl_lock); return ret; }
When btrfs_read_qgroup_config or btrfs_quota_enable return non-zero, we've already freed the fs_info->qgroup_ulist. The final btrfs_free_qgroup_config called from quota_disable makes another ulist_free(fs_info->qgroup_ulist) call. We set fs_info->qgroup_ulist to NULL on the mentioned error paths, turning the ulist_free in btrfs_free_qgroup_config into a noop. Cc: Wang Shilong <wangsl-fnst@cn.fujitsu.com> Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net> --- fs/btrfs/qgroup.c | 8 ++++++-- 1 files changed, 6 insertions(+), 2 deletions(-)