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J. Bruce Fields 97855b49b6 locks: fix possible infinite loop in posix deadlock detection 
It's currently possible to send posix_locks_deadlock() into an infinite
loop (under the BKL).

For now, fix this just by bailing out after a few iterations.  We may
want to fix this in a way that better clarifies the semantics of
deadlock detection.  But that will take more time, and this minimal fix
is probably adequate for any realistic scenario, and is simple enough to
be appropriate for applying to stable kernels now.

Thanks to George Davis for reporting the problem.

Cc: "George G. Davis" <gdavis@mvista.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-30 09:04:18 -07:00
..
9p
9p: fix memleak in fs/9p/v9fs.c
2007-10-23 13:48:50 -05:00
adfs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
affs
fs: mark nibblemap const
2007-10-17 08:42:47 -07:00
afs
KEYS: Make request_key() and co fundamentally asynchronous
2007-10-17 08:42:57 -07:00
autofs
Use task_pid_nr() instead of pid_nr(task_pid())
2007-10-19 11:53:43 -07:00
autofs4
pid namespaces: round up the API
2007-10-19 11:53:37 -07:00
befs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
bfs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
cifs
exportfs: make struct export_operations const
2007-10-22 08:13:21 -07:00
coda
pid namespaces: round up the API
2007-10-19 11:53:37 -07:00
configfs
r/o bind mounts: filesystem helpers for custom 'struct file's
2007-10-17 08:43:04 -07:00
cramfs
fs/cramfs/inode.c: replace hardcoded value with preprocessor constant
2007-10-18 14:37:29 -07:00
debugfs
[PATCH] pass dentry to audit_inode()/audit_inode_child()
2007-10-21 02:37:18 -04:00
devpts
devpts: add fsnotify create event
2007-05-08 11:14:59 -07:00
dlm
Use helpers to obtain task pid in printks
2007-10-19 11:53:43 -07:00
ecryptfs
[CRYPTO] users: Fix up scatterlist conversion errors
2007-10-27 00:52:07 -07:00
efs
exportfs: make struct export_operations const
2007-10-22 08:13:21 -07:00
exportfs
exportfs: update documentation
2007-10-22 08:13:21 -07:00
ext2
exportfs: make struct export_operations const
2007-10-22 08:13:21 -07:00
ext3
exportfs: make struct export_operations const
2007-10-22 08:13:21 -07:00
ext4
exportfs: make struct export_operations const
2007-10-22 08:13:21 -07:00
fat
exportfs: make struct export_operations const
2007-10-22 08:13:21 -07:00
freevxfs
mm: Remove slab destructors from kmem_cache_create().
2007-07-20 10:11:58 +09:00
fuse
fuse: add blksize field to fuse_attr
2007-10-18 14:37:31 -07:00
gfs2
exportfs: make struct export_operations const
2007-10-22 08:13:21 -07:00
hfs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
hfsplus
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
hostfs
uml: fix hostfs style
2007-10-16 09:43:07 -07:00
hpfs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
hppfs
…
hugetlbfs
r/o bind mounts: filesystem helpers for custom 'struct file's
2007-10-17 08:43:04 -07:00
isofs
exportfs: make struct export_operations const
2007-10-22 08:13:21 -07:00
jbd
JBD: Fix JBD warnings when compiling with CONFIG_JBD_DEBUG
2007-10-19 11:53:35 -07:00
jbd2
JBD2: debug code cleanup.
2007-10-17 18:49:59 -04:00
jffs2
[JFFS2] Prevent return of initialised variable in jffs2_init_acl_post()
2007-10-27 10:36:44 -04:00
jfs
exportfs: make struct export_operations const
2007-10-22 08:13:21 -07:00
lockd
NFS/SUNRPC: use transport protocol naming
2007-10-09 17:17:53 -04:00
minix
limit minixfs printks on corrupted dir i_size
2007-10-17 08:42:53 -07:00
msdos
…
ncpfs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
nfs
NFS: Fix for bug in handling of errors for O_DIRECT writes
2007-10-23 16:41:21 -07:00
nfs_common
…
nfsd
Merge branch 'sg' of git://git.kernel.dk/linux-2.6-block
2007-10-22 19:11:06 -07:00
nls
sparse pointer use of zero as null
2007-10-18 14:37:31 -07:00
ntfs
exportfs: make struct export_operations const
2007-10-22 08:13:21 -07:00
ocfs2
exportfs: make struct export_operations const
2007-10-22 08:13:21 -07:00
openpromfs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
partitions
fs/partitions/sun.c endianness annotations
2007-10-14 12:41:51 -07:00
proc
sched: fix /proc/<PID>/stat stime/utime monotonicity, part 2
2007-10-30 00:26:32 +01:00
qnx4
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
ramfs
Remove valueless definition of hard-selected RAMFS option
2007-10-17 08:42:56 -07:00
reiserfs
exportfs: make struct export_operations const
2007-10-22 08:13:21 -07:00
romfs
fs/romfs/inode.c: trivial improvements
2007-10-17 08:42:47 -07:00
smbfs
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
sysfs
sysfs: trivial: fix sysfs_create_file kerneldoc spelling mistake
2007-10-20 03:14:32 +02:00
sysv
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
udf
fs/udf/balloc.c: mark a variable as uninitialized_var()
2007-10-17 08:43:00 -07:00
ufs
revert "ufs: Fix mount check in ufs_fill_super()"
2007-10-30 08:06:55 -07:00
vfat
…
xfs
exportfs: make struct export_operations const
2007-10-22 08:13:21 -07:00
aio.c
Remove struct task_struct::io_wait
2007-10-18 14:37:20 -07:00
anon_inodes.c
anon-inodes use open coded atomic_inc for the shared inode
2007-10-17 08:43:00 -07:00
attr.c
VFS: make notify_change pass ATTR_KILL_S*ID to setattr operations
2007-10-18 14:37:22 -07:00
bad_inode.c
sendfile: remove bad_sendfile() from bad_file_ops
2007-07-10 08:04:15 +02:00
binfmt_aout.c
core_pattern: ignore RLIMIT_CORE if core_pattern is a pipe
2007-10-17 08:42:50 -07:00
binfmt_elf_fdpic.c
pid namespaces: changes to show virtual ids to user
2007-10-19 11:53:40 -07:00
binfmt_elf.c
pid namespaces: changes to show virtual ids to user
2007-10-19 11:53:40 -07:00
binfmt_em86.c
Convert files to UTF-8 and some cleanups
2007-10-19 23:21:04 +02:00
binfmt_flat.c
binfmt_flat: warning fixes
2007-10-17 08:42:54 -07:00
binfmt_misc.c
Convert files to UTF-8 and some cleanups
2007-10-19 23:21:04 +02:00
binfmt_script.c
Convert files to UTF-8 and some cleanups
2007-10-19 23:21:04 +02:00
binfmt_som.c
core_pattern: ignore RLIMIT_CORE if core_pattern is a pipe
2007-10-17 08:42:50 -07:00
bio.c
bio: make freeing of ->bi_io_vec conditional in bio_free()
2007-10-16 11:03:52 +02:00
block_dev.c
Slab API: remove useless ctor parameter and reorder parameters
2007-10-17 08:42:45 -07:00
buffer.c
nobh: nobh_write_end fix
2007-10-21 08:54:05 -07:00
char_dev.c
mm: bdi init hooks
2007-10-17 08:42:45 -07:00
compat_ioctl.c
sparse pointer use of zero as null
2007-10-18 14:37:31 -07:00
compat.c
mm: variable length argument support
2007-07-19 10:04:45 -07:00
dcache.c
dcache: don't expose uninitialized memory in /proc/<pid>/fd/<fd>
2007-10-22 08:13:18 -07:00
dcookies.c
Remove fs.h from mm.h
2007-07-29 17:09:29 -07:00
direct-io.c
remove ZERO_PAGE
2007-10-16 09:42:53 -07:00
dnotify.c
mm: Remove slab destructors from kmem_cache_create().
2007-07-20 10:11:58 +09:00
dquot.c
quota: send messages via netlink
2007-10-17 08:42:56 -07:00
drop_caches.c
invalidate_mapping_pages(): add cond_resched
2007-07-16 09:05:36 -07:00
eventfd.c
eventfd use waitqueue lock ...
2007-05-18 13:09:34 -07:00
eventpoll.c
fs/eventpoll.c: use list_for_each_entry() instead of list_for_each()
2007-10-19 11:53:38 -07:00
exec.c
Isolate some explicit usage of task->tgid
2007-10-19 11:53:40 -07:00
fcntl.c
pid namespaces: changes to show virtual ids to user
2007-10-19 11:53:40 -07:00
fifo.c
Detach sched.h from mm.h
2007-05-21 09:18:19 -07:00
file_table.c
fs/file_table.c: use list_for_each_entry() instead of list_for_each()
2007-10-19 11:53:38 -07:00
file.c
…
filesystems.c
add filesystem subtype support
2007-05-08 11:15:01 -07:00
fs-writeback.c
Use helpers to obtain task pid in printks
2007-10-19 11:53:43 -07:00
generic_acl.c
Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check
2007-07-17 12:00:03 -07:00
inode.c
introduce I_SYNC
2007-10-17 08:43:02 -07:00
inotify_user.c
change inotifyfs magic as the same magic is used for futexfs
2007-10-17 08:43:00 -07:00
inotify.c
[PATCH] new helper - inotify_evict_watch()
2007-10-21 02:37:38 -04:00
internal.h
cleanup compat ioctl handling
2007-05-08 11:15:09 -07:00
ioctl.c
drop obsolete sys_ioctl export
2007-07-16 09:05:48 -07:00
ioprio.c
Uninline find_task_by_xxx set of functions
2007-10-19 11:53:40 -07:00
Kconfig
jbd: config_jbd_debug cannot create /proc entry
2007-10-19 11:53:35 -07:00
Kconfig.binfmt
fs: Kill sh dependency for binfmt_flat.
2007-05-21 14:34:00 +09:00
libfs.c
exportfs: add new methods
2007-10-22 08:13:19 -07:00
locks.c
locks: fix possible infinite loop in posix deadlock detection
2007-10-30 09:04:18 -07:00
Makefile
Remove valueless definition of hard-selected RAMFS option
2007-10-17 08:42:56 -07:00
mbcache.c
fs: Fix to correct the mbcache entries counter
2007-10-25 15:18:29 -07:00
mpage.c
mm: buffered write cleanup
2007-10-16 09:42:54 -07:00
namei.c
[PATCH] pass dentry to audit_inode()/audit_inode_child()
2007-10-21 02:37:18 -04:00
namespace.c
[PATCH] new helpers - collect_mounts() and release_collected_mounts()
2007-10-21 02:37:25 -04:00
nfsctl.c
nfsctl: use vfs_path_lookup
2007-07-19 10:04:45 -07:00
no-block.c
…
open.c
[PATCH] pass dentry to audit_inode()/audit_inode_child()
2007-10-21 02:37:18 -04:00
pipe.c
sched: affine sync wakeups
2007-10-15 17:00:19 +02:00
pnode.c
Introduce a handy list_first_entry macro
2007-05-08 11:15:11 -07:00
pnode.h
[PATCH] new helpers - collect_mounts() and release_collected_mounts()
2007-10-21 02:37:25 -04:00
posix_acl.c
…
quota_v1.c
…
quota_v2.c
…
quota.c
[IA64] Fix build failure in fs/quota.c
2007-07-27 15:40:13 -07:00
read_write.c
Cleanup macros for distinguishing mandatory locks
2007-10-09 18:32:46 -04:00
read_write.h
…
readdir.c
ROUND_UP macro cleanup in fs/(select|compat|readdir).c
2007-05-08 11:15:09 -07:00
select.c
fs/select, remove unused macros
2007-10-19 11:53:41 -07:00
seq_file.c
[FS] seq_file: Introduce the seq_open_private()
2007-10-10 16:55:33 -07:00
signalfd.c
rename signalfd_siginfo fields
2007-10-17 08:43:01 -07:00
splice.c
Implement file posix capabilities
2007-10-17 08:43:07 -07:00
stack.c
…
stat.c
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
super.c
Convert files to UTF-8 and some cleanups
2007-10-19 23:21:04 +02:00
sync.c
Introduce fixed sys_sync_file_range2() syscall, implement on PowerPC and ARM
2007-06-28 11:38:30 -07:00
timerfd.c
make timerfd return a u64 and fix the __put_user
2007-07-26 11:35:17 -07:00
utimes.c
VFS: check nanoseconds in utimensat
2007-10-17 08:42:52 -07:00
xattr_acl.c
…
xattr.c
[PATCH] pass dentry to audit_inode()/audit_inode_child()
2007-10-21 02:37:18 -04:00