Jeff Moyer 65c24491b4 aio: lookup_ioctx can return the wrong value when looking up a bogus context ...

The libaio test harness turned up a problem whereby lookup_ioctx on a
bogus io context was returning the 1 valid io context from the list
(harness/cases/3.p).

Because of that, an extra put_iocontext was done, and when the process
exited, it hit a BUG_ON in the put_iocontext macro called from exit_aio
(since we expect a users count of 1 and instead get 0).

The problem was introduced by "aio: make the lookup_ioctx() lockless"
(commit abf137dd7712132ee56d5b3143c2ff61a72a5faa).

Thanks to Zach for pointing out that hlist_for_each_entry_rcu will not
return with a NULL tpos at the end of the loop, even if the entry was
not found.

Signed-off-by: Jeff Moyer <jmoyer@redhat.com>
Acked-by: Zach Brown <zach.brown@oracle.com>
Acked-by: Jens Axboe <jens.axboe@oracle.com>
Cc: Benjamin LaHaise <bcrl@kvack.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2009-03-19 15:57:18 -07:00

..

9p

fs/Kconfig: move 9p out

2009-01-22 13:16:01 +03:00

adfs

fs/Kconfig: move adfs out

2009-01-22 13:15:56 +03:00

affs

fs/Kconfig: move affs out

2009-01-22 13:15:56 +03:00

afs

fs/Kconfig: move afs out

2009-01-22 13:16:01 +03:00

autofs

fs/Kconfig: move autofs, autofs4 out

2009-01-22 13:15:54 +03:00

autofs4

fs/Kconfig: move autofs, autofs4 out

2009-01-22 13:15:54 +03:00

befs

fs/Kconfig: move befs out

2009-01-22 13:15:57 +03:00

bfs

fs/Kconfig: move bfs out

2009-01-22 13:15:57 +03:00

btrfs

Btrfs: Clear space_info full when adding new devices

2009-03-10 13:17:18 -04:00

cifs

[CIFS] Fix multiuser mounts so server does not invalidate earlier security contexts

2009-02-21 03:37:10 +00:00

coda

fs/Kconfig: move coda out

2009-01-22 13:16:01 +03:00

configfs

Revert "configfs: Silence lockdep on mkdir(), rmdir() and configfs_depend_item()"

2009-02-04 09:46:25 -08:00

cramfs

fs/Kconfig: move cramfs out

2009-01-22 13:15:58 +03:00

debugfs

debugfs: add helpers for exporting a size_t simple value

2009-01-07 10:00:16 -08:00

devpts

devpts: remove graffiti

2009-03-10 15:55:11 -07:00

dlm

dlm: initialize file_lock struct in GETLK before copying conflicting lock

2009-01-21 15:28:45 -06:00

ecryptfs

eCryptfs: don't encrypt file key with filename key

2009-03-14 11:57:22 -07:00

efs

fs/Kconfig: move efs out

2009-01-22 13:15:57 +03:00

exportfs

Merge branch 'next' into for-linus

2008-12-25 11:40:09 +11:00

ext2

ext2/xip: refuse to change xip flag during remount with busy inodes

2009-02-11 14:25:36 -08:00

ext3

ext3: revert "ext3: wait on all pending commits in ext3_sync_fs"

2009-02-11 14:25:35 -08:00

ext4

ext4: fix bb_prealloc_list corruption due to wrong group locking

2009-03-16 23:25:40 -04:00

fat

Fix _fat_bmap() locking

2009-03-11 12:04:18 -07:00

freevxfs

fs/Kconfig: move vxfs out

2009-01-22 13:15:58 +03:00

fuse

Merge branch 'Kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/misc

2009-01-26 10:08:50 -08:00

gfs2

filesystem freeze: add error handling of write_super_lockfs/unlockfs

2009-01-09 16:54:42 -08:00

hfs

fs/Kconfig: move hfs, hfsplus out

2009-01-22 13:15:57 +03:00

hfsplus

fs/Kconfig: move hfs, hfsplus out

2009-01-22 13:15:57 +03:00

hostfs

fs: symlink write_begin allocation context fix

2009-01-04 13:33:20 -08:00

hpfs

fs/Kconfig: move hpfs out

2009-01-22 13:15:59 +03:00

hppfs

CRED: Use creds in file structs

2008-11-14 10:39:25 +11:00

hugetlbfs

Do not account for the address space used by hugetlbfs using VM_ACCOUNT

2009-02-10 10:48:42 -08:00

isofs

fs/Kconfig: move iso9660, udf out

2009-01-22 13:15:55 +03:00

jbd

jbd: fix return value of journal_start_commit()

2009-02-11 14:25:35 -08:00

jbd2

jbd2: Avoid possible NULL dereference in jbd2_journal_begin_ordered_truncate()

2009-02-10 11:15:34 -05:00

jffs2

[JFFS2] fix mount crash caused by removed nodes

2009-02-21 11:09:29 +01:00

jfs

fs/Kconfig: move jfs out

2009-01-22 13:15:54 +03:00

lockd

NLM: Fix GRANT callback address comparison when IPv6 is enabled

2009-03-10 20:33:20 -04:00

minix

fs/Kconfig: move minix out

2009-01-22 13:15:58 +03:00

ncpfs

fs/Kconfig: move the rest of ncpfs out

2009-01-22 13:16:01 +03:00

nfs

NFS: Fix the fix to Bugzilla #11061, when IPv6 isn't defined...

2009-03-12 14:51:32 -04:00

nfs_common

SUNRPC: nfsacl_encode/nfsacl_decode should be exported as GPL-only

2008-12-23 15:21:32 -05:00

nfsd

NFSD: provide encode routine for OP_OPENATTR

2009-03-17 14:54:45 -04:00

nls

remove CONFIG_KMOD from fs

2008-10-17 02:38:36 +11:00

notify

inotify: fix GFP_KERNEL related deadlock

2009-02-18 15:37:56 -08:00

ntfs

fs/Kconfig: move ntfs out

2009-01-22 13:15:55 +03:00

ocfs2

ocfs2: Use xs->bucket to set xattr value outside

2009-03-12 16:46:09 -07:00

omfs

fs/Kconfig: move omfs out

2009-01-22 13:15:58 +03:00

openpromfs

zero i_uid/i_gid on inode allocation

2009-01-05 11:54:28 -05:00

partitions

block: fix bug in ptbl lookup cache

2009-01-09 21:46:13 +01:00

proc

Avoid 64-bit "switch()" statements on 32-bit architectures

2009-03-17 10:02:35 -07:00

qnx4

fs/Kconfig: move qnx4 out

2009-01-22 13:15:59 +03:00

ramfs

nommu: ramfs: don't leak pages when adding to page cache fails

2009-03-14 11:57:22 -07:00

reiserfs

fs/Kconfig: move reiserfs out

2009-01-22 13:15:53 +03:00

romfs

fs/Kconfig: move romfs out

2009-01-22 13:15:59 +03:00

smbfs

fs/Kconfig: move smbfs out

2009-01-22 13:16:01 +03:00

squashfs

Squashfs: Valid filesystems are flagged as bad by the corrupted fs patch

2009-03-12 03:23:48 +00:00

sysfs

Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6

2009-01-26 10:40:28 -08:00

sysv

fs/Kconfig: move sysv out

2009-01-22 13:15:59 +03:00

ubifs

UBIFS: remove fast unmounting

2009-01-29 16:34:30 +02:00

udf

fs/Kconfig: move iso9660, udf out

2009-01-22 13:15:55 +03:00

ufs

fs/Kconfig: move ufs out

2009-01-22 13:16:00 +03:00

xfs

xfs: only issues a cache flush on unmount if barriers are enabled

2009-03-06 17:35:12 -06:00

aio.c

aio: lookup_ioctx can return the wrong value when looking up a bogus context

2009-03-19 15:57:18 -07:00

anon_inodes.c

anon_inodes: use fops->owner for module refcount

2008-12-31 16:55:44 +02:00

attr.c

CRED: Wrap task credential accesses in the filesystem subsystem

2008-11-14 10:39:05 +11:00

bad_inode.c

kill ->dir_notify()

2008-12-31 18:07:43 -05:00

binfmt_aout.c

sanitize ifdefs in binfmt_aout

2009-01-03 11:45:54 -08:00

binfmt_elf_fdpic.c

FDPIC: Don't attempt to expand the userspace stack to fill the space allocated

2009-01-08 12:04:47 +00:00

binfmt_elf.c

elf core dump: fix get_user use

2009-02-06 17:34:07 -08:00

binfmt_em86.c

Allow recursion in binfmt_script and binfmt_misc

2008-10-16 11:21:38 -07:00

binfmt_flat.c

FLAT: Don't attempt to expand the userspace stack to fill the space allocated

2009-01-08 12:04:47 +00:00

binfmt_misc.c

fs/binfmt_misc.c: add terminating newline to /proc/sys/fs/binfmt_misc/status

2009-01-06 15:59:19 -08:00

binfmt_script.c

Allow recursion in binfmt_script and binfmt_misc

2008-10-16 11:21:38 -07:00

binfmt_som.c

CRED: Make execve() take advantage of copy-on-write credentials

2008-11-14 10:39:24 +11:00

bio-integrity.c

block: Add gfp_mask parameter to bio_integrity_clone()

2009-03-14 21:06:51 +01:00

bio.c

block: fix memory leak in bio_clone()

2009-03-14 21:06:52 +01:00

block_dev.c

filesystem freeze: implement generic freeze feature

2009-01-09 16:54:42 -08:00

buffer.c

Fix race in create_empty_buffers() vs __set_page_dirty_buffers()

2009-03-19 11:32:05 -07:00

char_dev.c

fs: fix name overwrite in __register_chrdev_region()

2009-01-06 15:59:13 -08:00

compat_binfmt_elf.c

…

compat_ioctl.c

Fix FREEZE/THAW compat_ioctl regression

2009-02-27 16:27:45 -08:00

compat.c

CRED: Fix SUID exec regression

2009-02-07 08:46:18 +11:00

dcache.c

EXPORT_SYMBOL(d_obtain_alias) rather than EXPORT_SYMBOL_GPL

2009-02-27 16:26:20 -08:00

dcookies.c

[CVE-2009-0029] System call wrapper special cases

2009-01-14 14:15:18 +01:00

direct-io.c

fs: truncate blocks outside i_size after O_DIRECT write error

2009-01-06 15:59:06 -08:00

dquot.c

quota: Improve locking

2009-01-16 18:02:10 +01:00

drop_caches.c

…

eventfd.c

[CVE-2009-0029] System call wrappers part 32

2009-01-14 14:15:31 +01:00

eventpoll.c

epoll: drop max_user_instances and rely only on max_user_watches

2009-01-29 18:04:45 -08:00

exec.c

CRED: Fix SUID exec regression

2009-02-07 08:46:18 +11:00

fcntl.c

[CVE-2009-0029] System call wrappers part 15

2009-01-14 14:15:24 +01:00

fifo.c

[PATCH] introduce fmode_t, do annotations

2008-10-21 07:47:06 -04:00

file_table.c

filp_cachep can be static in fs/file_table.c

2008-12-31 18:07:42 -05:00

file.c

[PATCH] merge locate_fd() and get_unused_fd()

2008-08-01 11:25:23 -04:00

filesystems.c

[CVE-2009-0029] System call wrappers part 27

2009-01-14 14:15:29 +01:00

fs-writeback.c

fs: new inode i_state corruption fix

2009-03-12 16:20:24 -07:00

generic_acl.c

…

inode.c

fs: new inode i_state corruption fix

2009-03-12 16:20:24 -07:00

internal.h

CRED: Fix SUID exec regression

2009-02-07 08:46:18 +11:00

ioctl.c

[CVE-2009-0029] System call wrappers part 15

2009-01-14 14:15:24 +01:00

ioprio.c

[CVE-2009-0029] System call wrappers part 28

2009-01-14 14:15:30 +01:00

Kconfig

fs/Kconfig: move 9p out

2009-01-22 13:16:01 +03:00

Kconfig.binfmt

CORE_DUMP_DEFAULT_ELF_HEADERS depends on ELF_CORE

2009-01-09 16:54:41 -08:00

libfs.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

2009-01-05 18:32:06 -08:00

locks.c

[CVE-2009-0029] System call wrappers part 16

2009-01-14 14:15:25 +01:00

Makefile

ext4: Reorder fs/Makefile so that ext2 root fs's are mounted using ext2

2009-02-28 09:50:01 -05:00

mbcache.c

…

mpage.c

do_mpage_readpage(): remove useless clear_buffer_mapped() call

2009-01-06 15:59:01 -08:00

namei.c

[CVE-2009-0029] System call wrappers part 29

2009-01-14 14:15:30 +01:00

namespace.c

Fix incomplete __mntput locking

2009-02-17 14:02:08 -08:00

nfsctl.c

[CVE-2009-0029] System call wrappers part 27

2009-01-14 14:15:29 +01:00

no-block.c

…

open.c

[CVE-2009-0029] System call wrappers part 30

2009-01-14 14:15:30 +01:00

pipe.c

pipe_rdwr_fasync: fix the error handling to prevent the leak/crash

2009-03-12 16:20:23 -07:00

pnode.c

…

pnode.h

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posix_acl.c

CRED: Wrap task credential accesses in the filesystem subsystem

2008-11-14 10:39:05 +11:00

quota_tree.c

quota: Split off quota tree handling into a separate file

2009-01-05 08:40:21 -08:00

quota_tree.h

quota: Split off quota tree handling into a separate file

2009-01-05 08:40:21 -08:00

quota_v1.c

quota: Move quotaio_v[12].h from include/linux/ to fs/

2009-01-05 08:36:58 -08:00

quota_v2.c

quota: Convert union in mem_dqinfo to a pointer

2009-01-05 08:40:21 -08:00

quota.c

[CVE-2009-0029] System call wrappers part 20

2009-01-14 14:15:26 +01:00

quotaio_v1.h

quota: Move quotaio_v[12].h from include/linux/ to fs/

2009-01-05 08:36:58 -08:00

quotaio_v2.h

quota: Split off quota tree handling into a separate file

2009-01-05 08:40:21 -08:00

read_write.c

[CVE-2009-0029] System call wrappers part 20

2009-01-14 14:15:26 +01:00

read_write.h

…

readdir.c

[CVE-2009-0029] System call wrappers part 32

2009-01-14 14:15:31 +01:00

select.c

[CVE-2009-0029] System call wrappers part 32

2009-01-14 14:15:31 +01:00

seq_file.c

seq_file: properly cope with pread

2009-02-18 15:37:53 -08:00

signalfd.c

[CVE-2009-0029] System call wrappers part 31

2009-01-14 14:15:31 +01:00

splice.c

[CVE-2009-0029] System call wrappers part 31

2009-01-14 14:15:31 +01:00

stack.c

…

stat.c

[CVE-2009-0029] System call wrappers part 30

2009-01-14 14:15:30 +01:00

super.c

vfs: add missing unlock in sget()

2009-03-12 16:20:23 -07:00

sync.c

[CVE-2009-0029] System call wrappers part 09

2009-01-14 14:15:21 +01:00

timerfd.c

timerfd: add flags check

2009-02-18 15:37:53 -08:00

utimes.c

[CVE-2009-0029] System call wrappers part 30

2009-01-14 14:15:30 +01:00

xattr_acl.c

…

xattr.c

[CVE-2009-0029] System call wrappers part 13

2009-01-14 14:15:23 +01:00