Xue jiufei 4a184b4ff4 ocfs2: fix NULL pointer dereference when traversing o2hb_all_regions ...

There may exist NULL pointer dereference in config_item_name() when one
volume (say Volume A) unmounts while another (say Volume B) mounting.

     Volume A                          Volume B

  already Mounted.
  Unmounting, call
  o2hb_heartbeat_group_drop_item()
    -> config_item_put(item)
    set reg(A)->item.ci_name to NULL
    in function config_item_cleanup().

                                    begin mounting, call
                                    o2hb_region_pin() and tranverse all
                                    regions. When reading
                                    reg(A)->item.ci_name, it causes
                                    NULL pointer dereference.

  call o2hb_region_release() and
  del reg(A) from list.

So we should skip accessing regions that is going to release when
tranverse o2hb_all_regions.

Signed-off-by: Yiwen Jiang <jiangyiwen@huawei.com>
Signed-off-by: joyce <xuejiufei@huawei.com>
Acked-by: Joel Becker <jlbec@evilplan.org>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Sunil Mushran <sunil.mushran@gmail.com>
Cc: Jie Liu <jeff.liu@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2013-07-03 16:07:25 -07:00

..

9p

Lots of bug fixes, cleanups and optimizations. In the bug fixes

2013-07-02 09:39:34 -07:00

adfs

Don't pass inode to ->d_hash() and ->d_compare()

2013-06-29 12:57:36 +04:00

affs

Don't pass inode to ->d_hash() and ->d_compare()

2013-06-29 12:57:36 +04:00

afs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-07-03 09:10:19 -07:00

autofs4

[readdir] switch dcache_readdir() users to ->iterate()

2013-06-29 12:46:48 +04:00

befs

[readdir] convert befs

2013-06-29 12:56:55 +04:00

bfs

[readdir] convert bfs

2013-06-29 12:56:33 +04:00

btrfs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-07-03 09:10:19 -07:00

cachefiles

cachefiles: remove unused macro list_to_page()

2013-06-19 14:16:47 +01:00

ceph

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-07-03 09:10:19 -07:00

cifs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-07-03 09:10:19 -07:00

coda

coda: don't bother with find_inode_number()

2013-06-29 12:57:20 +04:00

configfs

configfs: use capped length for ->store_attribute()

2013-07-03 16:07:23 -07:00

cramfs

[readdir] convert f2fs

2013-06-29 12:56:46 +04:00

debugfs

debugfs: write_file_bool() - ensure strtobool() operates on valid data

2013-06-03 13:55:02 -07:00

devpts

fs: Limit sys_mount to only request filesystem modules (Part 2).

2013-03-07 01:08:55 -08:00

dlm

dlm: Avoid LVB truncation

2013-06-26 11:38:02 -05:00

ecryptfs

ecryptfs: switch ecryptfs_decode_and_decrypt_filename() from dentry to sb

2013-06-29 12:57:25 +04:00

efivarfs

Don't pass inode to ->d_hash() and ->d_compare()

2013-06-29 12:57:36 +04:00

efs

[readdir] convert efs

2013-06-29 12:56:31 +04:00

exofs

Lots of bug fixes, cleanups and optimizations. In the bug fixes

2013-07-02 09:39:34 -07:00

exportfs

[readdir] constify ->actor

2013-06-29 12:57:05 +04:00

ext2

[O_TMPFILE] it's still short a few helpers, but infrastructure should be OK now...

2013-06-29 12:57:10 +04:00

ext3

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-07-03 09:10:19 -07:00

ext4

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-07-03 09:10:19 -07:00

f2fs

This patch-set includes the following major enhancement patches.

2013-07-02 09:42:38 -07:00

fat

Don't pass inode to ->d_hash() and ->d_compare()

2013-06-29 12:57:36 +04:00

freevxfs

[readdir] convert freevxfs

2013-06-29 12:56:53 +04:00

fscache

FS-Cache: Don't use spin_is_locked() in assertions

2013-06-19 14:16:47 +01:00

fuse

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-07-03 09:10:19 -07:00

gfs2

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-07-03 09:10:19 -07:00

hfs

Don't pass inode to ->d_hash() and ->d_compare()

2013-06-29 12:57:36 +04:00

hfsplus

Don't pass inode to ->d_hash() and ->d_compare()

2013-06-29 12:57:36 +04:00

hostfs

[readdir] convert hostfs

2013-06-29 12:56:59 +04:00

hpfs

Don't pass inode to ->d_hash() and ->d_compare()

2013-06-29 12:57:36 +04:00

hppfs

[readdir] convert procfs

2013-06-29 12:56:32 +04:00

hugetlbfs

hugetlbfs: fix mmap failure in unaligned size request

2013-05-07 18:38:27 -07:00

isofs

Don't pass inode to ->d_hash() and ->d_compare()

2013-06-29 12:57:36 +04:00

jbd

jbd: change journal_invalidatepage() to accept length

2013-05-21 23:26:36 -04:00

jbd2

jbd2: invalidate handle if jbd2_journal_restart() fails

2013-07-01 08:12:41 -04:00

jffs2

[readdir] convert jffs2

2013-06-29 12:56:47 +04:00

jfs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-07-03 09:10:19 -07:00

lockd

locks: add a new "lm_owner_key" lock operation

2013-06-29 12:57:45 +04:00

logfs

Lots of bug fixes, cleanups and optimizations. In the bug fixes

2013-07-02 09:39:34 -07:00

minix

minix: bug widening a binary "not" operation

2013-06-29 12:57:35 +04:00

ncpfs

Don't pass inode to ->d_hash() and ->d_compare()

2013-06-29 12:57:36 +04:00

nfs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-07-03 09:10:19 -07:00

nfs_common

nfs_common: Update the translation between nfsv3 acls linux posix acls

2013-02-13 06:15:14 -08:00

nfsd

locks: protect most of the file_lock handling with i_lock

2013-06-29 12:57:42 +04:00

nilfs2

[readdir] convert nilfs2

2013-06-29 12:56:36 +04:00

nls

…

notify

fanotify: quit wanking with FASYNC in ->release()

2013-06-29 12:57:23 +04:00

ntfs

Lots of bug fixes, cleanups and optimizations. In the bug fixes

2013-07-02 09:39:34 -07:00

ocfs2

ocfs2: fix NULL pointer dereference when traversing o2hb_all_regions

2013-07-03 16:07:25 -07:00

omfs

[readdir] convert omfs

2013-06-29 12:56:37 +04:00

openpromfs

[readdir] convert openpromfs

2013-06-29 12:56:32 +04:00

proc

Don't pass inode to ->d_hash() and ->d_compare()

2013-06-29 12:57:36 +04:00

pstore

Couple of pstore cleanups

2013-05-09 16:42:10 -07:00

qnx4

[readdir] convert qnx4

2013-06-29 12:56:38 +04:00

qnx6

[readdir] convert qnx6

2013-06-29 12:56:39 +04:00

quota

quota: add missing use of dq_data_lock in __dquot_initialize

2013-03-11 22:05:56 +01:00

ramfs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-02-26 20:16:07 -08:00

reiserfs

Lots of bug fixes, cleanups and optimizations. In the bug fixes

2013-07-02 09:39:34 -07:00

romfs

[readdir] convert romfs

2013-06-29 12:56:29 +04:00

squashfs

[readdir] convert squashfs

2013-06-29 12:56:28 +04:00

sysfs

Driver core patches for 3.11-rc1

2013-07-02 11:44:19 -07:00

sysv

Don't pass inode to ->d_hash() and ->d_compare()

2013-06-29 12:57:36 +04:00

ubifs

Lots of bug fixes, cleanups and optimizations. In the bug fixes

2013-07-02 09:39:34 -07:00

udf

udf: provide ->tmpfile()

2013-06-29 12:57:12 +04:00

ufs

[readdir] simple local unixlike: switch to ->iterate()

2013-06-29 12:46:47 +04:00

xfs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-07-03 09:10:19 -07:00

aio.c

constify rw_verify_area()

2013-06-29 12:57:34 +04:00

anon_inodes.c

get_empty_filp()/alloc_file() leave both ->f_pos and ->f_version zero

2013-02-26 02:46:11 -05:00

attr.c

userns: Allow chown and setgid preservation

2012-11-20 04:17:24 -08:00

bad_inode.c

[readdir] ->readdir() is gone

2013-06-29 12:57:04 +04:00

binfmt_aout.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-05-01 17:51:54 -07:00

binfmt_elf_fdpic.c

Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

2013-05-02 10:16:16 -07:00

binfmt_elf.c

Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

2013-05-02 10:16:16 -07:00

binfmt_em86.c

exec: use -ELOOP for max recursion depth

2012-12-17 17:15:23 -08:00

binfmt_flat.c

new helper: read_code()

2013-04-29 15:40:23 -04:00

binfmt_misc.c

binfmt_misc: reuse string_unescape_inplace()

2013-04-30 17:04:03 -07:00

binfmt_script.c

exec: do not leave bprm->interp on stack

2012-12-20 17:40:19 -08:00

binfmt_som.c

get rid of pt_regs argument of ->load_binary()

2012-11-28 21:53:38 -05:00

bio-integrity.c

bio-integrity: Add explicit field for owner of bip_buf

2013-03-23 14:26:34 -07:00

bio.c

Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block

2013-05-08 10:13:35 -07:00

block_dev.c

block_dev: switch to fixed_size_llseek()

2013-06-29 12:57:52 +04:00

buffer.c

mm: change invalidatepage prototype to accept length

2013-05-21 23:17:23 -04:00

char_dev.c

char_dev: pin parent kobject

2012-10-22 08:50:37 +03:00

compat_binfmt_elf.c

coredump: extend core dump note section to contain file names of mapped files

2012-10-06 03:05:17 +09:00

compat_ioctl.c

compat.c: LOOP_CLR_FD is taken care of in loop.c itself...

2013-06-29 12:46:44 +04:00

compat.c

[readdir] constify ->actor

2013-06-29 12:57:05 +04:00

coredump.c

do_coredump(): don't wait for thaw if coredump has already been interrupted

2013-05-04 14:45:54 -04:00

coredump.h

coredump: update coredump-related headers

2012-10-06 03:05:15 +09:00

dcache.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-07-03 09:10:19 -07:00

dcookies.c

consolidate compat lookup_dcookie()

2013-03-03 23:00:23 -05:00

direct-io.c

Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block

2013-05-08 10:13:35 -07:00

drop_caches.c

…

eventfd.c

fs, eventfd: add procfs fdinfo helper

2012-12-17 17:15:27 -08:00

eventpoll.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal

2013-05-01 07:21:43 -07:00

exec.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-07-03 09:10:19 -07:00

fcntl.c

new helper: file_inode(file)

2013-02-22 23:31:31 -05:00

fhandle.c

Merge branch 'for-3.8' of git://linux-nfs.org/~bfields/linux

2012-12-20 14:04:11 -08:00

file_table.c

Replace a bunch of file->dentry->d_inode refs with file_inode()

2013-06-29 12:57:13 +04:00

file.c

don't bother with deferred freeing of fdtables

2013-05-01 17:31:42 -04:00

filesystems.c

fs: Limit sys_mount to only request filesystem modules.

2013-03-03 19:36:31 -08:00

fs_struct.c

constify path_get/path_put and fs_struct.c stuff

2013-03-01 23:51:07 -05:00

fs-writeback.c

sync: don't block the flusher thread waiting on IO

2013-07-02 09:16:42 -07:00

generic_acl.c

…

inode.c

allow the temp files created by open() to be linked to

2013-06-29 12:57:11 +04:00

internal.h

constify rw_verify_area()

2013-06-29 12:57:34 +04:00

ioctl.c

new helper: file_inode(file)

2013-02-22 23:31:31 -05:00

ioprio.c

…

Kconfig

efivarfs: Move to fs/efivarfs

2013-04-17 13:25:09 +01:00

Kconfig.binfmt

fs: make binfmt support for #! scripts modular and removable

2013-04-30 17:04:04 -07:00

libfs.c

[readdir] switch dcache_readdir() users to ->iterate()

2013-06-29 12:46:48 +04:00

locks.c

locks: give the blocked_hash its own spinlock

2013-06-29 12:57:46 +04:00

Makefile

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-05-01 17:51:54 -07:00

mbcache.c

…

mount.h

get rid of full-hash scan on detaching vfsmounts

2013-04-09 14:12:52 -04:00

mpage.c

…

namei.c

Don't pass inode to ->d_hash() and ->d_compare()

2013-06-29 12:57:36 +04:00

namespace.c

create_mnt_ns: unidiomatic use of list_add()

2013-05-04 15:18:53 -04:00

no-block.c

…

open.c

[O_TMPFILE] it's still short a few helpers, but infrastructure should be OK now...

2013-06-29 12:57:10 +04:00

pipe.c

aio: don't include aio.h in sched.h

2013-05-07 20:16:25 -07:00

pnode.c

vfs: Fix invalid ida_remove() call

2013-05-31 15:16:33 -04:00

pnode.h

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-05-01 17:51:54 -07:00

posix_acl.c

…

proc_namespace.c

…

read_write.c

vfs: export lseek_execute() to modules

2013-07-03 16:23:27 +04:00

readdir.c

[readdir] constify ->actor

2013-06-29 12:57:05 +04:00

select.c

sched/rt: Move rt specific bits into new header file

2013-02-07 20:51:08 +01:00

seq_file.c

new helper: single_open_size()

2013-04-09 14:13:29 -04:00

signalfd.c

switch signalfd{,4}() to COMPAT_SYSCALL_DEFINE

2013-03-03 22:58:46 -05:00

splice.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-07-03 09:10:19 -07:00

stack.c

…

stat.c

switch vfs_getattr() to struct path

2013-02-26 02:46:08 -05:00

statfs.c

vfs: fix user_statfs to retry once on ESTALE errors

2012-12-20 18:50:07 -05:00

super.c

hlist: drop the node parameter from iterators

2013-02-27 19:10:24 -08:00

sync.c

teach SYSCALL_DEFINE<n> how to deal with long long/unsigned long long

2013-03-03 22:46:22 -05:00

timerfd.c

compat: restore timerfd settime and gettime compat syscalls

2013-03-02 09:35:13 -05:00

utimes.c

vfs: allow utimensat() calls to retry once on an ESTALE error

2012-12-20 18:50:08 -05:00

xattr_acl.c

userns: Fix posix_acl_file_xattr_userns gid conversion

2012-10-12 13:16:48 -07:00

xattr.c

vfs: make lremovexattr retry once on ESTALE error

2012-12-20 18:50:11 -05:00