4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jeff Mahoney <jeffm@xxxxxxxx>
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@xxxxxxxx>
Reviewed-by: Liu Bo <bo.li.liu@xxxxxxxxxx>
Signed-off-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/btrfs/extent-tree.c | 1 +
1 file changed, 1 insertion(+)
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -3984,6 +3984,7 @@ static int update_space_info(struct btrf
info->space_info_kobj, "%s",
alloc_name(found->flags));
if (ret) {
+ percpu_counter_destroy(&found->total_bytes_pinned);
kfree(found);
return ret;
}