| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 002/171] btrfs: do not leak reloc root if we fail to read the fs root | Date | Thu, 2 Jan 2020 23:05:33 +0100 |
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From: Josef Bacik <josef@toxicpanda.com>
commit ca1aa2818a53875cfdd175fb5e9a2984e997cce9 upstream.
If we fail to read the fs root corresponding with a reloc root we'll just break out and free the reloc roots. But we remove our current reloc_root from this list higher up, which means we'll leak this reloc_root. Fix this by adding ourselves back to the reloc_roots list so we are properly cleaned up.
CC: stable@vger.kernel.org # 4.4+ Reviewed-by: Filipe Manana <fdmanana@suse.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Josef Bacik <josef@toxicpanda.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- fs/btrfs/relocation.c | 1 + 1 file changed, 1 insertion(+)
--- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -4587,6 +4587,7 @@ int btrfs_recover_relocation(struct btrf reloc_root->root_key.offset); if (IS_ERR(fs_root)) { err = PTR_ERR(fs_root); + list_add_tail(&reloc_root->root_list, &reloc_roots); goto out_free; }
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