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| author | Zhao Lei <zhaolei@cn.fujitsu.com> | 2016-05-17 17:37:38 +0800 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2016-05-25 22:15:21 +0200 |
| commit | f1fee6534dcfbf468a159789aa202db2bce8c200 (patch) | |
| tree | 4149ed8954a0c344b354769d1c9bbed9a8e54114 /fs/locks.c | |
| parent | 2d324f59f343967a03eeb2690f0ff178304d0687 (diff) | |
| download | op-kernel-dev-f1fee6534dcfbf468a159789aa202db2bce8c200.zip op-kernel-dev-f1fee6534dcfbf468a159789aa202db2bce8c200.tar.gz | |
btrfs: scrub: Set bbio to NULL before calling btrfs_map_block
We usually call btrfs_put_bbio() when btrfs_map_block() failed,
btrfs_put_bbio() works right whether bbio is a valid value, or NULL.
But there is a exception, in some case, btrfs_map_block() will return
fail without touching *bbio(keeping its original value), and if bbio
was not initialized yet, invalid memory accessing will happened.
Above case is in scrub_missing_raid56_pages(), and similar case in
scrub_raid56_parity().
Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/locks.c')
0 files changed, 0 insertions, 0 deletions
