linux-toradex.git/fs/squashfs, branch v3.0.79 Linux kernel for Apalis and Colibri modules Squashfs: fix mount time sanity check for corrupted superblock 2012-10-02T16:47:54+00:00 Phillip Lougher phillip@squashfs.org.uk 2012-01-02T17:47:14+00:00 9523d5244a925f514e5daf04e5030a68e91f55cd commit cc37f75a9ffbbfcb1c3297534f293c8284e3c5a6 upstream. A Squashfs filesystem containing nothing but an empty directory, although unusual and ultimately pointless, is still valid. The directory_table >= next_table sanity check rejects these filesystems as invalid because the directory_table is empty and equal to next_table. Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit cc37f75a9ffbbfcb1c3297534f293c8284e3c5a6 upstream.

A Squashfs filesystem containing nothing but an empty directory,
although unusual and ultimately pointless, is still valid.

The directory_table >= next_table sanity check rejects these
filesystems as invalid because the directory_table is empty and
equal to next_table.

Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Merge git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linus 2011-05-29T18:19:45+00:00 Linus Torvalds torvalds@linux-foundation.org 2011-05-29T18:19:45+00:00 2ff55e98d6e662a4887d2c688a4ab2ae510a97df * git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linus: Squashfs: Fix sanity check patches on big-endian systems 
* git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linus:
  Squashfs: Fix sanity check patches on big-endian systems
Squashfs: Fix sanity check patches on big-endian systems 2011-05-29T09:03:09+00:00 Phillip Lougher phillip@lougher.demon.co.uk 2011-05-28T23:38:46+00:00 d5b72ce15ea99a0b8f0d1973074c584daf92d70e le64 values should be swapped when accessing on big-endian systems. Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk> 
le64 values should be swapped when accessing on
big-endian systems.

Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
Merge git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linus 2011-05-27T00:27:35+00:00 Linus Torvalds torvalds@linux-foundation.org 2011-05-27T00:27:35+00:00 bc9bc72e2f9bb07384c00604d1a40d0b5f62be6c * git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linus: Squashfs: update email address Squashfs: add extra sanity checks at mount time Squashfs: add sanity checks to fragment reading at mount time Squashfs: add sanity checks to lookup table reading at mount time Squashfs: add sanity checks to id reading at mount time Squashfs: add sanity checks to xattr reading at mount time Squashfs: reverse order of filesystem table reading Squashfs: move table allocation into squashfs_read_table() 
* git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linus:
  Squashfs: update email address
  Squashfs: add extra sanity checks at mount time
  Squashfs: add sanity checks to fragment reading at mount time
  Squashfs: add sanity checks to lookup table reading at mount time
  Squashfs: add sanity checks to id reading at mount time
  Squashfs: add sanity checks to xattr reading at mount time
  Squashfs: reverse order of filesystem table reading
  Squashfs: move table allocation into squashfs_read_table()
Squashfs: update email address 2011-05-26T09:49:11+00:00 Phillip Lougher phillip@lougher.demon.co.uk 2011-05-26T09:39:56+00:00 d7f2ff6718efa155fd92e481a5960496d084c63f My existing email address may stop working in a month or two, so update email to one that will continue working. Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk> 
My existing email address may stop working in a month or two, so update
email to one that will continue working.

Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
Squashfs: add extra sanity checks at mount time 2011-05-25T17:21:33+00:00 Phillip Lougher phillip@lougher.demon.co.uk 2011-05-24T03:45:33+00:00 1094a4a6118019255bf0e4adaa96bb17ccec3a82 Add some extra sanity checks of the inode and directory structures. Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk> 
Add some extra sanity checks of the inode and directory structures.

Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
Squashfs: add sanity checks to fragment reading at mount time 2011-05-25T17:21:33+00:00 Phillip Lougher phillip@lougher.demon.co.uk 2011-05-24T03:33:34+00:00 1cac63cc9b2ff0d16ab2d16232b1a6ee8676a47b 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>
Squashfs: add sanity checks to lookup table reading at mount time 2011-05-25T17:21:32+00:00 Phillip Lougher phillip@lougher.demon.co.uk 2011-05-24T03:15:21+00:00 ac51a0a7139aa93bf1176b701c86fa3d2bdf6106 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> 
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>
Squashfs: add sanity checks to id reading at mount time 2011-05-25T17:21:32+00:00 Phillip Lougher phillip@lougher.demon.co.uk 2011-05-24T03:05:22+00:00 37986f63c81bf23c856f65fc5e4830550e7f3d5b 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>
Squashfs: add sanity checks to xattr reading at mount time 2011-05-25T17:21:31+00:00 Phillip Lougher phillip@lougher.demon.co.uk 2011-05-24T02:20:27+00:00 6f04864515365e135adc9f1cee4ac1251bb0ed35 These checks add sanity checking of the mount-time xattr structures. Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk> 
These checks add sanity checking of the mount-time xattr structures.

Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>