Wu Fengguang a54573d774 readahead: fix NULL filp dereference ...

commit 70655c06bd upstream.

btrfs relocate_file_extent_cluster() calls us with NULL filp:

  [ 4005.426805] BUG: unable to handle kernel NULL pointer dereference at 00000021
  [ 4005.426818] IP: [<c109a130>] page_cache_sync_readahead+0x18/0x3e

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Cc: Yan Zheng <yanzheng@21cn.com>
Reported-by: Kirill A. Shutemov <kirill@shutemov.name>
Tested-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2010-04-26 07:41:19 -07:00

..

allocpercpu.c

…

backing-dev.c

Thaw refrigerated bdi flusher threads before invoking kthread_stop on them

2009-11-12 13:08:11 +01:00

bootmem.c

kmemleak: Do not report alloc_bootmem blocks as leaks

2009-08-27 14:29:17 +01:00

bounce.c

…

debug-pagealloc.c

…

dmapool.c

…

fadvise.c

readahead: introduce FMODE_RANDOM for POSIX_FADV_RANDOM

2010-03-15 08:49:37 -07:00

failslab.c

…

filemap_xip.c

const: mark struct vm_struct_operations

2009-09-27 11:39:25 -07:00

filemap.c

mm: flush dcache before writing into page to avoid alias

2010-02-09 04:50:59 -08:00

fremap.c

…

highmem.c

highmem: Fix debug_kmap_atomic() to also handle KM_IRQ_PTE, KM_NMI, and KM_NMI_PTE

2009-11-10 04:15:47 +01:00

hugetlb.c

const: mark struct vm_struct_operations

2009-09-27 11:39:25 -07:00

hwpoison-inject.c

HWPOISON: Add simple debugfs interface to inject hwpoison on arbitary PFNs

2009-09-16 11:50:17 +02:00

init-mm.c

…

internal.h

ksm: fix mlockfreed to munlocked

2010-01-06 15:05:22 -08:00

Kconfig

NOMMU: Optimise away the {dac_,}mmap_min_addr tests

2010-01-06 15:04:30 -08:00

Kconfig.debug

trivial: improve help text for mm debug config options

2009-09-21 15:14:57 +02:00

kmemcheck.c

…

kmemleak-test.c

…

kmemleak.c

kmemleak: Check for NULL pointer returned by create_object()

2009-10-09 13:28:47 -07:00

ksm.c

ksm: fix mlockfreed to munlocked

2010-01-06 15:05:22 -08:00

maccess.c

…

madvise.c

Merge branch 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6

2009-09-24 07:53:22 -07:00

Makefile

procfs: disable per-task stack usage on NOMMU

2009-09-24 17:11:24 -07:00

memcontrol.c

memcg: ensure list is empty at rmdir

2010-01-22 15:18:01 -08:00

memory_hotplug.c

mm: allow memory hotplug and hibernation in the same kernel

2009-11-17 17:40:33 -08:00

memory-failure.c

hwpoison: fix oops on ksm pages

2009-10-29 07:39:24 -07:00

memory.c

mm: sigbus instead of abusing oom

2009-12-18 14:05:51 -08:00

mempolicy.c

tmpfs: cleanup mpol_parse_str()

2010-04-01 15:58:27 -07:00

mempool.c

mm: remove broken 'kzalloc' mempool

2009-09-22 07:17:35 -07:00

migrate.c

Fix potential crash with sys_move_pages

2010-02-23 07:37:42 -08:00

mincore.c

mm: hugetlb: fix hugepage memory leak in mincore()

2009-12-18 14:04:29 -08:00

mlock.c

ksm: fix mlockfreed to munlocked

2010-01-06 15:05:22 -08:00

mm_init.c

…

mmap.c

untangle the do_mremap() mess

2010-01-18 10:19:11 -08:00

mmu_context.c

mm: reduce atomic use on use_mm fast path

2009-09-22 07:17:42 -07:00

mmu_notifier.c

ksm: add mmu_notifier set_pte_at_notify()

2009-09-22 07:17:31 -07:00

mmzone.c

…

mprotect.c

perf: Do the big rename: Performance Counters -> Performance Events

2009-09-21 14:28:04 +02:00

mremap.c

untangle the do_mremap() mess

2010-01-18 10:19:11 -08:00

msync.c

…

nommu.c

NOMMU: Don't pass NULL pointers to fput() in do_mmap_pgoff()

2009-10-31 12:11:37 -07:00

oom_kill.c

memcg: fix oom killing a child process in an other cgroup

2010-03-15 08:49:33 -07:00

page_alloc.c

mm: fix migratetype bug which slowed swapping

2010-02-09 04:50:49 -08:00

page_cgroup.c

memory hotplug: alloc page from other node in memory online

2009-09-22 07:17:26 -07:00

page_io.c

…

page_isolation.c

…

page-writeback.c

writeback: account IO throttling wait as iowait

2009-10-09 12:40:42 +02:00

pagewalk.c

mm: hugetlb: fix hugepage memory leak in walk_page_range()

2009-12-18 14:04:30 -08:00

percpu.c

percpu: restructure pcpu_extend_area_map() to fix bugs and improve readability

2009-11-13 00:55:35 +09:00

prio_tree.c

…

quicklist.c

cpumask: use new-style cpumask ops in mm/quicklist.

2009-09-24 09:34:52 +09:30

readahead.c

readahead: fix NULL filp dereference

2010-04-26 07:41:19 -07:00

rmap.c

mm/rmap.c: fix comment

2009-10-01 16:11:12 -07:00

shmem_acl.c

shmfs: use 'check_acl' instead of 'permission'

2009-09-08 11:08:46 -07:00

shmem.c

const: mark struct vm_struct_operations

2009-09-27 11:39:25 -07:00

slab.c

slab: initialize unused alien cache entry as NULL at alloc_alien_cache().

2010-03-15 08:49:36 -07:00

slob.c

slab: remove duplicate kmem_cache_init_late() declarations

2009-08-06 11:36:25 +03:00

slub.c

mm: kmem_cache_create(): make it easier to catch NULL cache names

2009-09-22 07:17:33 -07:00

sparse-vmemmap.c

memory hotplug: alloc page from other node in memory online

2009-09-22 07:17:26 -07:00

sparse.c

memory hotplug: alloc page from other node in memory online

2009-09-22 07:17:26 -07:00

swap_state.c

mm: add_to_swap_cache() does not return -EEXIST

2009-09-22 07:17:35 -07:00

swap.c

mm: replace various uses of num_physpages by totalram_pages

2009-09-22 07:17:38 -07:00

swapfile.c

mm: remove incorrect swap_count() from try_to_unuse()

2009-11-02 09:44:41 -08:00

thrash.c

…

truncate.c

vfs: Fix vmtruncate() regression

2010-01-22 15:18:41 -08:00

util.c

untangle the do_mremap() mess

2010-01-18 10:19:11 -08:00

vmalloc.c

mm: purge fragmented percpu vmap blocks

2010-02-09 04:50:58 -08:00

vmscan.c

vmscan: do not evict inactive pages when skipping an active list scan

2010-01-06 15:05:21 -08:00

vmstat.c

mm: vmstat: add isolate pages

2009-09-22 07:17:29 -07:00