Nathan Scott 0e1edbd999 [XFS] Fix xfs_free_extent related NULL pointer dereference.
We recently fixed an out-of-space deadlock in XFS, and part of that fix
involved the addition of the XFS_ALLOC_FLAG_FREEING flag to some of the
space allocator calls to indicate they're freeing space, not allocating
it. There was a missed xfs_alloc_fix_freelist condition test that did not
correctly test "flags". The same test would also test an uninitialised
structure field (args->userdata) and depending on its value either would
or would not return early with a critical buffer pointer set to NULL.

This fixes that up, adds asserts to several places to catch future botches
of this nature, and skips sections of xfs_alloc_fix_freelist that are
irrelevent for the space-freeing case.

SGI-PV: 955303
SGI-Modid: xfs-linux-melb:xfs-kern:26743a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2006-08-10 14:40:41 +10:00
..
2006-06-26 09:58:18 -07:00
2006-08-06 08:57:48 -07:00
2006-07-31 13:28:43 -07:00
2006-08-03 16:56:02 -04:00
2006-08-03 16:55:41 -04:00
2006-08-06 08:57:46 -07:00
2006-06-26 18:35:02 +02:00
2006-01-11 18:42:13 -08:00
2006-01-10 08:01:25 -08:00
2006-07-31 13:28:38 -07:00
2006-07-03 15:27:06 -07:00
2006-01-08 20:12:40 -08:00
2006-04-02 13:37:19 +02:00
2006-04-11 13:53:33 +02:00
2006-07-12 12:52:55 -07:00
2005-10-30 17:37:32 -08:00
2006-06-26 09:58:17 -07:00
2006-03-28 09:16:08 -08:00
2006-06-23 07:42:49 -07:00
2006-06-26 09:58:17 -07:00
2005-11-07 18:18:11 -08:00
2006-03-23 07:38:11 -08:00
2006-03-23 07:38:11 -08:00
2006-03-23 07:38:12 -08:00
2006-06-23 07:42:49 -07:00