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| author | Phillip Lougher <phillip@lougher.demon.co.uk> | 2011-05-24 07:05:22 +0400 |
|---|---|---|
| committer | Phillip Lougher <phillip@lougher.demon.co.uk> | 2011-05-25 21:21:32 +0400 |
| commit | 37986f63c81bf23c856f65fc5e4830550e7f3d5b (patch) | |
| tree | aafcc2078b469fb8fdb6e43255e136fcc7059dc9 /fs/squashfs/squashfs.h | |
| parent | 6f04864515365e135adc9f1cee4ac1251bb0ed35 (diff) | |
| download | linux-37986f63c81bf23c856f65fc5e4830550e7f3d5b.tar.xz | |
Squashfs: add sanity checks to id reading at mount time
Fsfuzzer generates corrupted filesystems which throw a warn_on in
kmalloc. One of these is due to a corrupted superblock no_ids field.
Fix this by checking that the number of bytes to be read (and allocated)
does not extend into the next filesystem structure.
Also add a couple of other sanity checks of the mount-time id table
structures.
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
Diffstat (limited to 'fs/squashfs/squashfs.h')
| -rw-r--r-- | fs/squashfs/squashfs.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/squashfs/squashfs.h b/fs/squashfs/squashfs.h index d622e849a451..0e3d220defd2 100644 --- a/fs/squashfs/squashfs.h +++ b/fs/squashfs/squashfs.h @@ -61,7 +61,7 @@ extern __le64 *squashfs_read_fragment_index_table(struct super_block *, /* id.c */ extern int squashfs_get_id(struct super_block *, unsigned int, unsigned int *); -extern __le64 *squashfs_read_id_index_table(struct super_block *, u64, +extern __le64 *squashfs_read_id_index_table(struct super_block *, u64, u64, unsigned short); /* inode.c */ |