| commit | 37986f63c81bf23c856f65fc5e4830550e7f3d5b | |
| author | Phillip Lougher <phillip@lougher.demon.co.uk> | |
| Tue, 24 May 2011 03:05:22 +0000 (24 04:05 +0100) | ||
| committer | Phillip Lougher <phillip@lougher.demon.co.uk> | |
| Wed, 25 May 2011 17:21:32 +0000 (25 18:21 +0100) | ||
| tree | aafcc2078b469fb8fdb6e43255e136fcc7059dc9 | treesnapshot (tar.gz zip) |
| parent | 6f04864515365e135adc9f1cee4ac1251bb0ed35 | commitdiff |
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>
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>
| fs/squashfs/id.c | diffblobblamehistory | |
| fs/squashfs/squashfs.h | diffblobblamehistory | |
| fs/squashfs/super.c | diffblobblamehistory | |
| fs/squashfs/xattr.h | diffblobblamehistory |