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| author | Qu Wenruo <quwenruo@cn.fujitsu.com> | 2015-05-05 10:53:15 +0800 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2015-06-02 19:34:35 -0700 |
| commit | 1f6e4b3f9f7c859fed7ac4c0853e976a1a752873 (patch) | |
| tree | fa34f3f76af7b12888fc285cb044fa495d242432 /fs/btrfs | |
| parent | 619d8c4ef7c5dd346add55da82c9179cd2e3387e (diff) | |
| download | linux-1f6e4b3f9f7c859fed7ac4c0853e976a1a752873.tar.gz | |
btrfs: Fix superblock csum type check.
Old csum type check is wrong and can't catch csum_type 1(not supported). Fix it to avoid hostile 0 division. Reported-by: Lukas Lueg <lukas.lueg@gmail.com> Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com> Reviewed-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs/btrfs')
| -rw-r--r-- | fs/btrfs/ctree.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 670e4be7225b..9d7a6c38f0b1 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -174,7 +174,7 @@ struct btrfs_ordered_sum; /* csum types */ #define BTRFS_CSUM_TYPE_CRC32 0 -static int btrfs_csum_sizes[] = { 4, 0 }; +static int btrfs_csum_sizes[] = { 4 }; /* four bytes for CRC32 */ #define BTRFS_EMPTY_DIR_SIZE 0 |