| commit | 1cac63cc9b2ff0d16ab2d16232b1a6ee8676a47b | |
| author | Phillip Lougher <phillip@lougher.demon.co.uk> | |
| Tue, 24 May 2011 03:33:34 +0000 (24 04:33 +0100) | ||
| committer | Phillip Lougher <phillip@lougher.demon.co.uk> | |
| Wed, 25 May 2011 17:21:33 +0000 (25 18:21 +0100) | ||
| tree | 31ee36dac4a1b351c153058ffa0799a959ba0272 | treesnapshot (tar.gz zip) |
| parent | ac51a0a7139aa93bf1176b701c86fa3d2bdf6106 | commitdiff |
Squashfs: add sanity checks to fragment reading at mount time
Fsfuzzer generates corrupted filesystems which throw a warn_on in
kmalloc. One of these is due to a corrupted superblock fragments 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 fragment 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 fragments 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 fragment table
structures.
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
| fs/squashfs/fragment.c | diffblobblamehistory | |
| fs/squashfs/squashfs.h | diffblobblamehistory | |
| fs/squashfs/super.c | diffblobblamehistory |