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2b4c8022fa
linux/fs/ocfs2
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Jeff Liu d6394b5900 ocfs2: fix null pointer dereference in ocfs2_dir_foreach_blk_id() 
Fix a NULL pointer deference while removing an empty directory, which
was introduced by commit 3704412bdb ("[readdir] convert ocfs2").

  BUG: unable to handle kernel NULL pointer dereference at (null)
  IP: [<(null)>]           (null)
  PGD 6da85067 PUD 6da89067 PMD 0
  Oops: 0010 [#1] SMP
  CPU: 0 PID: 6564 Comm: rmdir Tainted: G           O 3.11.0-rc1 #4
  RIP: 0010:[<0000000000000000>]  [<          (null)>]           (null)
  Call Trace:
    ocfs2_dir_foreach+0x49/0x50 [ocfs2]
    ocfs2_empty_dir+0x12c/0x3e0 [ocfs2]
    ocfs2_unlink+0x56e/0xc10 [ocfs2]
    vfs_rmdir+0xd5/0x140
    do_rmdir+0x1cb/0x1e0
    SyS_rmdir+0x16/0x20
    system_call_fastpath+0x16/0x1b
  Code:  Bad RIP value.
  RIP  [<          (null)>]           (null)
  RSP <ffff88006daddc10>
  CR2: 0000000000000000

[dan.carpenter@oracle.com: fix pointer math]
Signed-off-by: Jie Liu <jeff.liu@oracle.com>
Reported-by: David Weber <wb@munzinger.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-08-13 17:57:49 -07:00
..
cluster ocfs2: fix NULL pointer dereference when traversing o2hb_all_regions 2013-07-03 16:07:25 -07:00
dlm ocfs2: dlmlock_master() should return DLM_NORMAL after adding lock to blocked list 2013-07-03 16:07:24 -07:00
dlmfs fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
acl.c ocfs2: Handle kuids and kgids in acl/xattr conversions. 2013-02-13 06:00:56 -08:00
acl.h
alloc.c ocfs2: fix mutex_unlock and possible memory leak in ocfs2_remove_btree_range 2013-07-03 16:07:23 -07:00
alloc.h
aops.c ocfs2: fix NULL pointer dereference in ocfs2_duplicate_clusters_by_page 2013-08-13 17:57:49 -07:00
aops.h aio: don't include aio.h in sched.h 2013-05-07 20:16:25 -07:00
blockcheck.c ocfs2: kill endianness abuses in blockcheck.c 2012-05-29 23:28:35 -04:00
blockcheck.h
buffer_head_io.c
buffer_head_io.h
dcache.c hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
dcache.h
dir.c ocfs2: fix null pointer dereference in ocfs2_dir_foreach_blk_id() 2013-08-13 17:57:49 -07:00
dir.h [readdir] convert ocfs2 2013-06-29 12:57:02 +04:00
dlmglue.c aio: remove retry-based AIO 2013-05-07 18:38:27 -07:00
dlmglue.h
export.c fs: encode_fh: return FILEID_INVALID if invalid fid_type 2013-02-26 02:46:10 -05:00
export.h
extent_map.c ocfs2: goto out_unlock if ocfs2_get_clusters_nocache() failed in ocfs2_fiemap() 2013-05-24 16:22:52 -07:00
extent_map.h
file.c ocfs2: fix NULL pointer dereference in ocfs2_duplicate_clusters_by_page 2013-08-13 17:57:49 -07:00
file.h
heartbeat.c
heartbeat.h
inode.c ocfs2: Convert uid and gids between in core and on disk inodes 2013-02-13 06:00:58 -08:00
inode.h aio: don't include aio.h in sched.h 2013-05-07 20:16:25 -07:00
ioctl.c ocfs2: fix error return code in ocfs2_info_handle_freefrag() 2013-04-29 15:54:27 -07:00
ioctl.h
journal.c [readdir] convert ocfs2 2013-06-29 12:57:02 +04:00
journal.h ocfs2: Revert 40bd62e to avoid regression in extended allocation 2013-08-13 17:57:49 -07:00
Kconfig
localalloc.c ocfs2: remove kfree() redundant null checks 2013-02-21 17:22:19 -08:00
localalloc.h
locks.c
locks.h
Makefile
mmap.c kill f_vfsmnt 2013-02-26 02:46:10 -05:00
mmap.h
move_extents.c ocfs2: fix NULL pointer dereference in ocfs2_duplicate_clusters_by_page 2013-08-13 17:57:49 -07:00
move_extents.h
namei.c ocfs2: fix readonly issue in ocfs2_unlink() 2013-07-03 16:07:24 -07:00
namei.h
ocfs1_fs_compat.h
ocfs2_fs.h
ocfs2_ioctl.h
ocfs2_lockid.h
ocfs2_lockingver.h
ocfs2_trace.h
ocfs2.h ocfs2: remove unecessary variable needs_checkpoint 2013-07-03 16:07:23 -07:00
quota_global.c userns: Convert struct dquot dq_id to be a struct kqid 2012-09-18 01:01:41 -07:00
quota_local.c userns: Convert struct dquot dq_id to be a struct kqid 2012-09-18 01:01:41 -07:00
quota.h
refcounttree.c ocfs2: fix NULL pointer dereference in ocfs2_duplicate_clusters_by_page 2013-08-13 17:57:49 -07:00
refcounttree.h ocfs2: fix NULL pointer dereference in ocfs2_duplicate_clusters_by_page 2013-08-13 17:57:49 -07:00
reservations.c
reservations.h
resize.c
resize.h
slot_map.c
slot_map.h
stack_o2cb.c ocfs2: remove kfree() redundant null checks 2013-02-21 17:22:19 -08:00
stack_user.c
stackglue.c
stackglue.h
suballoc.c ocfs2: remove duplicated mlog_errno() in ocfs2_relink_block_group 2013-07-03 16:07:24 -07:00
suballoc.h ocfs2: ac->ac_allow_chain_relink=0 won't disable group relink 2013-02-27 19:10:09 -08:00
super.c ocfs2: remove unecessary variable needs_checkpoint 2013-07-03 16:07:23 -07:00
super.h
symlink.c ocfs2: Fix oops in ocfs2_fast_symlink_readpage() code path 2013-02-26 02:46:12 -05:00
symlink.h ocfs: simplify symlink handling 2012-05-29 23:28:40 -04:00
sysfile.c ocfs2: remove kfree() redundant null checks 2013-02-21 17:22:19 -08:00
sysfile.h
uptodate.c
uptodate.h
ver.c
ver.h
xattr.c ocfs2: xattr: fix inlined xattr reflink 2013-07-03 16:07:24 -07:00
xattr.h