Steven Rostedt 64a07bd82e [PATCH] protect remove_proc_entry ... It has been discovered that the remove_proc_entry has a race in the removing of entries in the proc file system that are siblings. There's no protection around the traversing and removing of elements that belong in the same subdirectory. This subdirectory list is protected in other areas by the BKL. So the BKL was at first used to protect this area too, but unfortunately, remove_proc_entry may be called with spinlocks held. The BKL may schedule, so this was not a solution. The final solution was to add a new global spin lock to protect this list, called proc_subdir_lock. This lock now protects the list in remove_proc_entry, and I also went around looking for other areas that this list is modified and added this protection there too. Care must be taken since these locations call several functions that may also schedule. Since I don't see any location that these functions that modify the subdirectory list are called by interrupts, the irqsave/restore versions of the spin lock was _not_ used. Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		2006-03-26 08:56:53 -08:00
..
9p	[PATCH] 9p: fix name consistency problems	2006-03-25 08:22:54 -08:00
adfs	[PATCH] cpuset memory spread: slab cache format	2006-03-24 07:33:23 -08:00
affs	[PATCH] cpuset memory spread: slab cache format	2006-03-24 07:33:23 -08:00
afs	[PATCH] fs: Use ARRAY_SIZE macro	2006-03-24 07:33:19 -08:00
autofs	[PATCH] capable/capability.h (fs/)	2006-01-11 18:42:13 -08:00
autofs4	[PATCH] sem2mutex: autofs4 wq_sem	2006-03-23 07:38:13 -08:00
befs	fix typos "wich" -> "which"	2006-03-24 18:23:14 +01:00
bfs	[PATCH] cpuset memory spread: slab cache format	2006-03-24 07:33:23 -08:00
cifs	[PATCH] s/;;/;/g	2006-03-24 07:33:24 -08:00
coda	BUG_ON() Conversion in fs/coda/	2006-03-24 18:42:13 +01:00
configfs	[PATCH] BUG_ON() Conversion in fs/configfs/	2006-02-03 14:03:09 -08:00
cramfs	[PATCH] cramfs mounts provide corrupted content since 2.6.15	2006-03-06 18:40:43 -08:00
debugfs	[PATCH] debugfs: Add debugfs_create_blob() helper for exporting binary data	2006-03-20 13:42:59 -08:00
devfs	[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem	2006-01-09 15:59:24 -08:00
devpts	[PATCH] devpts: use lib/parser.c for parsing mount options	2006-03-23 07:38:17 -08:00
efs	[PATCH] cpuset memory spread: slab cache filesystems	2006-03-24 07:33:23 -08:00
exportfs	[PATCH] exportfs: add find_acceptable_alias helper	2006-01-18 19:20:28 -08:00
ext2	[PATCH] Ext2 flags shouldn't report "nogrpid"	2006-03-25 08:22:58 -08:00
ext3	[PATCH] ext3: Fix debug logging-only compilation error	2006-03-25 08:22:56 -08:00
fat	[PATCH] cpuset memory spread: slab cache format	2006-03-24 07:33:23 -08:00
freevxfs	[PATCH] cpuset memory spread: slab cache filesystems	2006-03-24 07:33:23 -08:00
fuse	[PATCH] fuse: fix bug in negative lookup	2006-02-28 20:53:43 -08:00
hfs	[PATCH] hfs: cleanup HFS prints	2006-01-18 19:20:23 -08:00
hfsplus	[PATCH] hfs: set type/creator for symlinks	2006-01-18 19:20:23 -08:00
hostfs	[PATCH] uml: hostfs - fix possible PAGE_CACHE_SHIFT overflows	2005-12-29 09:48:15 -08:00
hpfs	[PATCH] cpuset memory spread: slab cache format	2006-03-24 07:33:23 -08:00
hppfs	[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem	2006-01-09 15:59:24 -08:00
hugetlbfs	[PATCH] convert hugetlbfs_counter to atomic	2006-03-22 07:54:04 -08:00
isofs	[PATCH] isofs: remove unused debugging macros	2006-03-24 07:33:24 -08:00
jbd	[PATCH] jbd: convert kjournald to kthread API	2006-03-25 08:22:50 -08:00
jffs	[PATCH] cpuset memory spread: slab cache format	2006-03-24 07:33:23 -08:00
jffs2	[PATCH] cpuset memory spread: slab cache format	2006-03-24 07:33:23 -08:00
jfs	[PATCH] cpuset memory spread: slab cache format	2006-03-24 07:33:23 -08:00
lockd	Merge git://git.linux-nfs.org/pub/linux/nfs-2.6	2006-03-25 09:18:27 -08:00
minix	[PATCH] fix messages in fs/minix	2006-03-25 08:22:56 -08:00
msdos	[PATCH] fat: remove the unneeded vfat_find() in vfat_rename()	2005-10-30 17:37:32 -08:00
ncpfs	[PATCH] cpuset memory spread: slab cache format	2006-03-24 07:33:23 -08:00
nfs	Merge git://git.linux-nfs.org/pub/linux/nfs-2.6	2006-03-25 09:18:27 -08:00
nfs_common	[PATCH] nfsacl: Solaris VxFS compatibility fix	2005-10-11 09:46:54 -07:00
nfsd	Merge git://git.linux-nfs.org/pub/linux/nfs-2.6	2006-03-25 09:18:27 -08:00
nls	[PATCH] fs: Use ARRAY_SIZE macro	2006-03-24 07:33:19 -08:00
ntfs	[PATCH] cpuset memory spread: slab cache filesystems	2006-03-24 07:33:23 -08:00
ocfs2	ocfs2: finally remove MLF* macros	2006-03-24 14:58:29 -08:00
openpromfs	[PATCH] kfree cleanup: fs	2005-11-07 07:54:06 -08:00
partitions	[PATCH] s390: Remove old history/whitespave from partition code	2006-03-24 07:33:17 -08:00
proc	[PATCH] protect remove_proc_entry	2006-03-26 08:56:53 -08:00
qnx4	[PATCH] cpuset memory spread: slab cache format	2006-03-24 07:33:23 -08:00
ramfs	[PATCH] fs/*/file.c: drop insane header dependencies	2006-03-23 07:38:17 -08:00
reiserfs	[PATCH] indirect_print_item() warning fix	2006-03-25 08:22:57 -08:00
romfs	[PATCH] cpuset memory spread: slab cache format	2006-03-24 07:33:23 -08:00
smbfs	[PATCH] smbfs: Fix debug logging-only compilation error	2006-03-25 08:22:55 -08:00
sysfs	[PATCH] sysfs: fix a kobject leak in sysfs_add_link on the error path	2006-03-20 13:42:59 -08:00
sysv	[PATCH] cpuset memory spread: slab cache filesystems	2006-03-24 07:33:23 -08:00
udf	[PATCH] udf: fix uid/gid options and add uid/gid=ignore and forget options	2006-03-25 08:23:00 -08:00
ufs	typo patch for fs/ufs/super.c	2006-03-24 18:21:44 +01:00
vfat	[PATCH] fat: remove the unneeded vfat_find() in vfat_rename()	2005-10-30 17:37:32 -08:00
xfs	[PATCH] cpuset memory spread slab cache hooks	2006-03-24 07:33:23 -08:00
aio.c	[PATCH] use kzalloc and kcalloc in core fs code	2006-03-25 08:23:00 -08:00
attr.c	[PATCH] capable/capability.h (fs/)	2006-01-11 18:42:13 -08:00
bad_inode.c	[PATCH] make some things static	2005-05-05 16:36:47 -07:00
binfmt_aout.c	[PATCH] dump_thread() cleanup	2006-01-10 08:01:25 -08:00
binfmt_elf_fdpic.c	BUG_ON() Conversion in fs/binfmt_elf_fdpic.c	2006-03-24 18:38:48 +01:00
binfmt_elf.c	[PATCH] x86_64: Increase the variability of the process stack on 64bit architectures	2006-03-25 09:10:52 -08:00
binfmt_em86.c
binfmt_flat.c	[PATCH] flat binary loader doesn't check fd table full	2006-03-25 08:23:01 -08:00
binfmt_misc.c	[PATCH] Unlinline a bunch of other functions	2006-01-14 18:27:06 -08:00
binfmt_script.c
binfmt_som.c	[PATCH] mm: mm_init set_mm_counters	2005-10-29 21:40:38 -07:00
bio.c	[PATCH] use kzalloc and kcalloc in core fs code	2006-03-25 08:23:00 -08:00
block_dev.c	[PATCH] sb_set_blocksize cleanup	2006-03-24 07:33:25 -08:00
buffer.c	[PATCH] freeze_bdev() cleanup	2006-03-25 08:22:56 -08:00
char_dev.c	[PATCH] use kzalloc and kcalloc in core fs code	2006-03-25 08:23:00 -08:00
compat_ioctl.c	[PATCH] fs: Use ARRAY_SIZE macro	2006-03-24 07:33:19 -08:00
compat.c	[PATCH] use kzalloc and kcalloc in core fs code	2006-03-25 08:23:00 -08:00
dcache.c	[PATCH] Reduce sched latency in shrink_dcache_sb()	2006-03-25 08:22:56 -08:00
dcookies.c	[PATCH] capable/capability.h (fs/)	2006-01-11 18:42:13 -08:00
direct-io.c	[PATCH] direct-io: bug fix in dio handling write error	2006-03-25 08:23:00 -08:00
dnotify.c
dquot.c	[PATCH] cpuset memory spread: slab cache format	2006-03-24 07:33:23 -08:00
drop_caches.c	[PATCH] drop-pagecache	2006-01-08 20:12:40 -08:00
eventpoll.c	[PATCH] POLLRDHUP/EPOLLRDHUP handling for half-closed devices notifications	2006-03-25 08:22:56 -08:00
exec.c	[PATCH] use kzalloc and kcalloc in core fs code	2006-03-25 08:23:00 -08:00
fcntl.c	[PATCH] Shrinks sizeof(files_struct) and better layout	2006-03-23 07:38:09 -08:00
fifo.c	Simplify fifo_open() locking logic	2006-03-07 09:16:35 -08:00
file_table.c	[PATCH] get_empty_filp tweaks, inline epoll_init_file()	2006-03-23 07:38:17 -08:00
file.c	[PATCH] Shrinks sizeof(files_struct) and better layout	2006-03-23 07:38:09 -08:00
filesystems.c	[PATCH] fix missing includes	2005-10-30 17:37:32 -08:00
fs-writeback.c	[PATCH] Move cond_resched() after iput() in sync_sb_inodes()	2006-03-25 08:22:56 -08:00
inode.c	[PATCH] fs/inode.c: make iprune_mutex static	2006-03-25 08:22:51 -08:00
inotify.c	[PATCH] inotify: lock avoidance with parent watch status in dentry	2006-03-25 08:22:53 -08:00
ioctl.c	[PATCH] capable/capability.h (fs/)	2006-01-11 18:42:13 -08:00
ioprio.c	[PATCH] capable/capability.h (fs/)	2006-01-11 18:42:13 -08:00
Kconfig	Merge branch 'linus'	2006-03-23 23:44:19 -05:00
Kconfig.binfmt	[PATCH] frv: suppress configuration of certain features for FRV	2006-01-08 20:13:36 -08:00
libfs.c	[PATCH] sem2mutex: fs/libfs.c	2006-03-23 07:38:12 -08:00
locks.c	lockd: stop abusing file_lock_list	2006-03-20 13:44:40 -05:00
Makefile	[PATCH] relay: migrate from relayfs to a generic relay API	2006-03-23 19:56:55 +01:00
mbcache.c	[PATCH] cpuset memory spread: slab cache filesystems	2006-03-24 07:33:23 -08:00
mpage.c	[PATCH] fix possible PAGE_CACHE_SHIFT overflows	2006-01-08 20:13:54 -08:00
namei.c	Merge branch 'audit.b3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current	2006-03-25 09:24:53 -08:00
namespace.c	VFS: New /proc file /proc/self/mountstats	2006-03-20 13:44:12 -05:00
nfsctl.c	[PATCH] fs: Use ARRAY_SIZE macro	2006-03-24 07:33:19 -08:00
open.c	Merge branch 'audit.b3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current	2006-03-25 09:24:53 -08:00
pipe.c	[PATCH] use kzalloc and kcalloc in core fs code	2006-03-25 08:23:00 -08:00
pnode.c	[PATCH] s/;;/;/g	2006-03-24 07:33:24 -08:00
pnode.h	[PATCH] unbindable mounts	2005-11-07 18:18:11 -08:00
posix_acl.c	[PATCH] gfp flags annotations - part 1	2005-10-08 15:00:57 -07:00
quota_v1.c
quota_v2.c	[PATCH] sem2mutex: quota	2006-03-23 07:38:11 -08:00
quota.c	[PATCH] sem2mutex: quota	2006-03-23 07:38:11 -08:00
read_write.c	[PATCH] remove needless check in fs/read_write.c	2006-03-25 08:23:01 -08:00
readdir.c	[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem	2006-01-09 15:59:24 -08:00
select.c	[PATCH] select: time comparison fixes	2006-02-17 13:59:28 -08:00
seq_file.c	[PATCH] sem2mutex: fs/seq_file.c	2006-03-23 07:38:12 -08:00
stat.c	[PATCH] fstatat64 support	2006-02-11 21:41:10 -08:00
super.c	[PATCH] use kzalloc and kcalloc in core fs code	2006-03-25 08:23:00 -08:00
xattr_acl.c
xattr.c	[PATCH] Collect more inode information during syscall processing.	2006-03-20 14:08:53 -05:00