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btrfs: fix memory leak in update_space_info failure path

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commit 896533a7da929136d0432713f02a3edffece2826 upstream.

If we fail to add the space_info kobject, we'll leak the memory
for the percpu counter.

Fixes: 6ab0a2029c (btrfs: publish allocation data in sysfs)
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jeff Mahoney 2017-05-17 09:49:37 -04:00 committed by Greg Kroah-Hartman
parent 4d15ab90ec
commit 66d6448475
1 changed files with 1 additions and 0 deletions
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fs/btrfs/extent-tree.c
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@ -3984,6 +3984,7 @@ static int update_space_info(struct btrfs_fs_info *info, u64 flags,
info->space_info_kobj, "%s",
alloc_name(found->flags));
if (ret) {
percpu_counter_destroy(&found->total_bytes_pinned);
kfree(found);
return ret;
}