Brian Behlendorf b8b6e4c453 Fix NULL deref in balance_pgdat() ...

Be careful not to unconditionally clear the PF_MEMALLOC bit in
the task structure.  It may have already been set when entering
kv_alloc() in which case it must remain set on exit.  In
particular the kswapd thread will have PF_MEMALLOC set in
order to prevent it from entering direct reclaim.  By clearing
it we allow the following NULL deref to potentially occur.

  BUG: unable to handle kernel NULL pointer dereference at (null)
  IP: [<ffffffff8109c7ab>] balance_pgdat+0x25b/0x4ff

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes ZFS issue #287

2011-11-03 09:50:22 -07:00

..

.gitignore

sun-misc-gitignore

2010-01-08 09:37:54 -08:00

Makefile.in

Fix zlib compression

2011-02-25 16:56:22 -08:00

spl-atomic.c

Linux 2.6.39 compat, DEFINE_SPINLOCK()

2011-04-20 12:01:11 -07:00

spl-condvar.c

Block in cv_destroy() on all waiters

2011-02-04 14:09:08 -08:00

spl-cred.c

Add crgetfsuid()/crgetfsgid() helpers

2011-03-22 12:18:44 -07:00

spl-debug.c

Fix zlib compression

2011-02-25 16:56:22 -08:00

spl-err.c

Prefix all SPL debug macros with 'S'

2010-07-20 13:30:40 -07:00

spl-generic.c

Remove /etc/hostid missing warning

2011-10-06 14:58:09 -07:00

spl-kmem.c

Fix NULL deref in balance_pgdat()

2011-11-03 09:50:22 -07:00

spl-kobj.c

Remove VN_HOLD/VN_RELE/VOP_PUTPAGE

2011-01-12 11:38:05 -08:00

spl-kstat.c

Prefix all SPL debug macros with 'S'

2010-07-20 13:30:40 -07:00

spl-module.c

Linux 2.6.39 compat, DEFINE_SPINLOCK()

2011-04-20 12:01:11 -07:00

spl-mutex.c

Public Release Prep

2010-05-17 15:18:00 -07:00

spl-proc.c

Correct typos in the spl proc handler.

2011-04-24 20:56:07 -05:00

spl-rwlock.c

Public Release Prep

2010-05-17 15:18:00 -07:00

spl-taskq.c

Add TASKQ_NORECLAIM flag

2011-05-06 15:23:58 -07:00

spl-thread.c

Add Thread Specific Data (TSD) Implementation

2010-12-07 10:02:32 -08:00

spl-time.c

Minor 32-bit fix cast to hrtime_t before the mutliply.

2010-05-23 09:51:17 -07:00

spl-tsd.c

Add Thread Specific Data (TSD) Implementation

2010-12-07 10:02:32 -08:00

spl-vnode.c

vn_rdwr() didn't properly advance the file position

2011-10-18 16:51:35 -07:00

spl-xdr.c

Prefix all SPL debug macros with 'S'

2010-07-20 13:30:40 -07:00

spl-zlib.c

Linux 2.6.39 compat, zlib_deflate_workspacesize()

2011-04-20 14:39:15 -07:00