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authorPhillip Lougher <phillip@lougher.demon.co.uk>2011-05-24 04:15:21 +0100
committerPhillip Lougher <phillip@lougher.demon.co.uk>2011-05-25 18:21:32 +0100
commitac51a0a7139aa93bf1176b701c86fa3d2bdf6106 (patch)
tree776d75b5cd1712d43feecc698b855173ed6ee57f /fs/squashfs/squashfs.h
parent37986f63c81bf23c856f65fc5e4830550e7f3d5b (diff)
Squashfs: add sanity checks to lookup table reading at mount time
Fsfuzzer generates corrupted filesystems which throw a warn_on in kmalloc. One of these is due to a corrupted superblock inodes 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 lookup 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.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/squashfs/squashfs.h b/fs/squashfs/squashfs.h
index 0e3d220defd2..3b705f137ebb 100644
--- a/fs/squashfs/squashfs.h
+++ b/fs/squashfs/squashfs.h
@@ -51,7 +51,7 @@ extern const struct squashfs_decompressor *squashfs_lookup_decompressor(int);
extern void *squashfs_decompressor_init(struct super_block *, unsigned short);
/* export.c */
-extern __le64 *squashfs_read_inode_lookup_table(struct super_block *, u64,
+extern __le64 *squashfs_read_inode_lookup_table(struct super_block *, u64, u64,
unsigned int);
/* fragment.c */