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| author | Liu Bo <bo.li.liu@oracle.com> | 2016-08-23 15:22:58 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-16 22:16:06 +0100 |
| commit | dc059e58af01c31a8d593cc99086cf41600852b2 (patch) | |
| tree | 85f40d9277600cae6987e7ab23c477a36f0d273e /fs/btrfs/struct-funcs.c | |
| parent | 4bf414d2ff5758d64d4c785339c92ba22af979c3 (diff) | |
Btrfs: detect corruption when non-root leaf has zero item
commit 1ba98d086fe3a14d6a31f2f66dbab70c45d00f63 upstream.
Right now we treat leaf which has zero item as a valid one
because we could have an empty tree, that is, a root that is
also a leaf without any item, however, in the same case but
when the leaf is not a root, we can end up with hitting the
BUG_ON(1) in btrfs_extend_item() called by
setup_inline_extent_backref().
This makes us check the situation as a corruption if leaf is
not its own root.
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Chris Mason <clm@fb.com>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/btrfs/struct-funcs.c')
0 files changed, 0 insertions, 0 deletions