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David Howells b4cf1e08c8 CacheFiles: Add missing retrieval completions 
CacheFiles is missing some calls to fscache_retrieval_complete() in the error
handling/collision paths of its reader functions.

This can be seen by the following assertion tripping in fscache_put_operation()
whereby the operation being destroyed is still in the in-progress state and has
not been cancelled or completed:

FS-Cache: Assertion failed
3 == 5 is false
------------[ cut here ]------------
kernel BUG at fs/fscache/operation.c:408!
invalid opcode: 0000 [#1] SMP
CPU 2
Modules linked in: xfs ioatdma dca loop joydev evdev
psmouse dcdbas pcspkr serio_raw i5000_edac edac_core i5k_amb shpchp
pci_hotplug sg sr_mod]

Pid: 8062, comm: httpd Not tainted 3.1.0-rc8 #1 Dell Inc. PowerEdge 1950/0DT097
RIP: 0010:[<ffffffff81197b24>]  [<ffffffff81197b24>] fscache_put_operation+0x304/0x330
RSP: 0018:ffff880062f739d8  EFLAGS: 00010296
RAX: 0000000000000025 RBX: ffff8800c5122e84 RCX: ffffffff81ddf040
RDX: 00000000ffffffff RSI: 0000000000000082 RDI: ffffffff81ddef30
RBP: ffff880062f739f8 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000003 R12: ffff8800c5122e40
R13: ffff880037a2cd20 R14: ffff880087c7a058 R15: ffff880087c7a000
FS:  00007f63dcf636e0(0000) GS:ffff88022fc80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0c0a91f000 CR3: 0000000062ec2000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process httpd (pid: 8062, threadinfo ffff880062f72000, task ffff880087e58000)
Stack:
 ffff880062f73bf8 0000000000000000 ffff880062f73bf8 ffff880037a2cd20
 ffff880062f73a68 ffffffff8119aa7e ffff88006540e000 ffff880062f73ad4
 ffff88008e9a4308 ffff880037a2cd20 ffff880062f73a48 ffff8800c5122e40
Call Trace:
 [<ffffffff8119aa7e>] __fscache_read_or_alloc_pages+0x1fe/0x530
 [<ffffffff81250780>] __nfs_readpages_from_fscache+0x70/0x1c0
 [<ffffffff8123142a>] nfs_readpages+0xca/0x1e0
 [<ffffffff815f3c06>] ? rpc_do_put_task+0x36/0x50
 [<ffffffff8122755b>] ? alloc_nfs_open_context+0x4b/0x110
 [<ffffffff815ecd1a>] ? rpc_call_sync+0x5a/0x70
 [<ffffffff810e7e9a>] __do_page_cache_readahead+0x1ca/0x270
 [<ffffffff810e7f61>] ra_submit+0x21/0x30
 [<ffffffff810e818d>] ondemand_readahead+0x11d/0x250
 [<ffffffff810e83b6>] page_cache_sync_readahead+0x36/0x60
 [<ffffffff810dffa4>] generic_file_aio_read+0x454/0x770
 [<ffffffff81224ce1>] nfs_file_read+0xe1/0x130
 [<ffffffff81121bd9>] do_sync_read+0xd9/0x120
 [<ffffffff8114088f>] ? mntput+0x1f/0x40
 [<ffffffff811238cb>] ? fput+0x1cb/0x260
 [<ffffffff81122938>] vfs_read+0xc8/0x180
 [<ffffffff81122af5>] sys_read+0x55/0x90

Reported-by: Mark Moseley <moseleymark@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
2012-12-20 22:07:40 +00:00
..
9p
The following changes since commit 4cbe5a555fa58a79b6ecbb6c531b8bab0650778d:
2012-10-12 09:59:23 +09:00
adfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
affs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
afs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
autofs4
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2012-12-17 15:44:47 -08:00
befs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
bfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
btrfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
2012-12-18 09:42:05 -08:00
cachefiles
CacheFiles: Add missing retrieval completions
2012-12-20 22:07:40 +00:00
ceph
ceph: fix dentry reference leak in ceph_encode_fh()
2012-12-18 15:02:11 -08:00
cifs
lseek: the "whence" argument is called "whence"
2012-12-17 17:15:12 -08:00
coda
fs: push rcu_barrier() from deactivate_locked_super() to filesystems
2012-10-02 21:35:55 -04:00
configfs
lseek: the "whence" argument is called "whence"
2012-12-17 17:15:12 -08:00
cramfs
userns: Convert cramfs to use kuid/kgid where appropriate
2012-09-21 03:13:08 -07:00
debugfs
fs/debugsfs: remove unnecessary inode->i_private initialization
2012-11-15 17:46:42 -08:00
devpts
TTY: devpts, document devpts inode operations
2012-10-22 16:50:13 -07:00
dlm
dlm: fix lvb invalidation conditions
2012-11-16 11:20:42 -06:00
ecryptfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
efs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
exofs
exofs: don't leak io_state and pages on read error
2012-12-14 12:17:32 +02:00
exportfs
fs, exportfs: add exportfs_encode_inode_fh() helper
2012-12-17 17:15:27 -08:00
ext2
ext2: fix return values on parse_options() failure
2012-10-09 23:23:53 +02:00
ext3
lseek: the "whence" argument is called "whence"
2012-12-17 17:15:12 -08:00
ext4
lseek: the "whence" argument is called "whence"
2012-12-17 17:15:12 -08:00
fat
fs/fat: strip "cp" prefix from codepage in display
2012-12-17 17:15:22 -08:00
freevxfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
fscache
CacheFiles: Add missing retrieval completions
2012-12-20 22:07:40 +00:00
fuse
Merge branch 'akpm' (Andrew's patch-bomb)
2012-12-17 20:58:12 -08:00
gfs2
lseek: the "whence" argument is called "whence"
2012-12-17 17:15:12 -08:00
hfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
hfsplus
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
hostfs
Merge branch 'for-linus-37rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml
2012-10-10 11:15:20 +09:00
hpfs
hpfs: drop lock/unlock super
2012-10-09 23:33:38 -04:00
hppfs
pidns: Use task_active_pid_ns where appropriate
2012-11-19 05:59:09 -08:00
hugetlbfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2012-12-13 12:00:02 -08:00
isofs
tmpfs,ceph,gfs2,isofs,reiserfs,xfs: fix fh_len checking
2012-10-09 23:33:55 -04:00
jbd
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2012-12-13 12:00:02 -08:00
jbd2
There are two major features for this merge window. The first is
2012-12-16 17:33:01 -08:00
jffs2
jffs2: hold erase_completion_lock on exit
2012-11-18 11:59:01 +02:00
jfs
jfs: Fix FITRIM argument handling
2012-10-17 09:18:38 -05:00
lockd
lockd: Remove BUG_ON()s from fs/lockd/clntproc.c
2012-11-04 14:43:40 -05:00
logfs
Fix misspellings of "whether" in comments.
2012-11-19 14:31:35 +01:00
minix
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
ncpfs
propagate name change to comments in kernel source
2012-12-06 10:39:54 +01:00
nfs
NFS: Use FS-Cache invalidation
2012-12-20 22:06:33 +00:00
nfs_common
…
nfsd
UAPI Disintegration 2012-10-09
2012-10-09 18:35:22 -04:00
nilfs2
mm: redefine address_space.assoc_mapping
2012-12-11 17:22:26 -08:00
nls
nls: fix (and rename) mac NLS table files and config options
2012-06-01 19:51:22 -07:00
notify
fs, fanotify: add @mflags field to fanotify output
2012-12-17 17:15:28 -08:00
ntfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
ocfs2
lseek: the "whence" argument is called "whence"
2012-12-17 17:15:12 -08:00
omfs
omfs: convert to use beXX_add_cpu()
2012-10-06 03:05:31 +09:00
openpromfs
fs: push rcu_barrier() from deactivate_locked_super() to filesystems
2012-10-02 21:35:55 -04:00
proc
Merge branch 'akpm' (Andrew's patch-bomb)
2012-12-17 20:58:12 -08:00
pstore
lseek: the "whence" argument is called "whence"
2012-12-17 17:15:12 -08:00
qnx4
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
qnx6
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
quota
quota: Use the pre-processor to compile out quotactl_cmd_write when !CONFIG_BLOCK
2012-12-13 16:33:24 +01:00
ramfs
don't pass nameidata to ->create()
2012-07-14 16:34:47 +04:00
reiserfs
reiserfs: Move quota calls out of write lock
2012-11-19 21:34:33 +01:00
romfs
fs: push rcu_barrier() from deactivate_locked_super() to filesystems
2012-10-02 21:35:55 -04:00
squashfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
sysfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2012-12-17 15:44:47 -08:00
sysv
sysv: drop lock/unlock super
2012-10-09 23:33:39 -04:00
ubifs
ubifs: use prandom_bytes
2012-12-17 17:15:26 -08:00
udf
udf: remove un-needed variable from inode_getblk
2012-12-13 16:33:23 +01:00
ufs
ufs: drop lock/unlock super
2012-10-09 23:33:39 -04:00
xfs
xfs: fix sparse reported log CRC endian issue
2012-12-03 12:10:59 -06:00
aio.c
aio: now fput() is OK from interrupt context; get rid of manual delayed __fput()
2012-07-22 23:57:59 +04:00
anon_inodes.c
…
attr.c
userns: Allow chown and setgid preservation
2012-11-20 04:17:24 -08:00
bad_inode.c
lseek: the "whence" argument is called "whence"
2012-12-17 17:15:12 -08:00
binfmt_aout.c
get rid of pt_regs argument of ->load_binary()
2012-11-28 21:53:38 -05:00
binfmt_elf_fdpic.c
get rid of pt_regs argument of ->load_binary()
2012-11-28 21:53:38 -05:00
binfmt_elf.c
binfmt_elf: fix corner case kfree of uninitialized data
2012-12-17 17:15:19 -08:00
binfmt_em86.c
exec: use -ELOOP for max recursion depth
2012-12-17 17:15:23 -08:00
binfmt_flat.c
get rid of pt_regs argument of ->load_binary()
2012-11-28 21:53:38 -05:00
binfmt_misc.c
exec: use -ELOOP for max recursion depth
2012-12-17 17:15:23 -08:00
binfmt_script.c
exec: use -ELOOP for max recursion depth
2012-12-17 17:15:23 -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
block: Ues bi_pool for bio_integrity_alloc()
2012-09-09 10:35:38 +02:00
bio.c
vfs: fix: don't increase bio_slab_max if krealloc() fails
2012-10-22 22:00:26 +02:00
block_dev.c
lseek: the "whence" argument is called "whence"
2012-12-17 17:15:12 -08:00
buffer.c
fs/buffer.c: remove redundant initialization in alloc_page_buffers()
2012-12-12 17:38:35 -08:00
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
Merge 3.7-rc3 into tty-next
2012-10-29 09:00:57 -07:00
compat.c
vfs: define struct filename and have getname() return it
2012-10-12 20:14:55 -04:00
coredump.c
do_coredump(): get rid of pt_regs argument
2012-11-29 00:01:25 -05:00
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
2012-10-02 20:25:04 -07:00
dcookies.c
…
direct-io.c
direct-io: don't read inode->i_blkbits multiple times
2012-11-29 12:38:44 -08:00
drop_caches.c
…
eventfd.c
fs, eventfd: add procfs fdinfo helper
2012-12-17 17:15:27 -08:00
eventpoll.c
fs, epoll: add procfs fdinfo helper
2012-12-17 17:15:27 -08:00
exec.c
Merge branch 'akpm' (Andrew's patch-bomb)
2012-12-17 20:58:12 -08:00
fcntl.c
Fix F_DUPFD_CLOEXEC breakage
2012-10-09 15:52:31 +09:00
fhandle.c
Fix misspellings of "whether" in comments.
2012-11-19 14:31:35 +01:00
fifo.c
fifo: Do not restart open() if it already found a partner
2012-07-16 08:33:14 -07:00
file_table.c
lglock: add DEFINE_STATIC_LGLOCK()
2012-10-10 01:15:44 -04:00
file.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
2012-12-12 12:22:13 -08:00
filesystems.c
vfs: define struct filename and have getname() return it
2012-10-12 20:14:55 -04:00
fs_struct.c
kill daemonize()
2012-11-28 21:49:02 -05:00
fs-writeback.c
writeback: fix a typo in comment
2012-12-12 17:38:34 -08:00
generic_acl.c
userns: Pass a userns parameter into posix_acl_to_xattr and posix_acl_from_xattr
2012-09-18 01:01:35 -07:00
inode.c
mm: redefine address_space.assoc_mapping
2012-12-11 17:22:26 -08:00
internal.h
writeback: put unused inodes to LRU after writeback completion
2012-11-26 17:41:24 -08:00
ioctl.c
switch simple cases of fget_light to fdget
2012-09-26 22:20:08 -04:00
ioprio.c
…
Kconfig
ext4: Remove CONFIG_EXT4_FS_XATTR
2012-12-10 16:30:43 -05:00
Kconfig.binfmt
coredump: make core dump functionality optional
2012-10-06 03:05:15 +09:00
libfs.c
lseek: the "whence" argument is called "whence"
2012-12-17 17:15:12 -08:00
locks.c
UAPI Disintegration 2012-10-09
2012-10-09 18:35:22 -04:00
Makefile
coredump: make core dump functionality optional
2012-10-06 03:05:15 +09:00
mbcache.c
…
mount.h
proc: Usable inode numbers for the namespace file descriptors.
2012-11-20 04:19:49 -08:00
mpage.c
…
namei.c
lookup_one_len: don't accept . and ..
2012-11-29 22:17:21 -05:00
namespace.c
userns: Require CAP_SYS_ADMIN for most uses of setns.
2012-12-14 16:12:03 -08:00
no-block.c
…
open.c
VFS: Make more complete truncate operation available to CacheFiles
2012-12-20 22:05:41 +00:00
pipe.c
pipe(2) - race-free error recovery
2012-09-26 21:08:52 -04:00
pnode.c
VFS: Make clone_mnt()/copy_tree()/collect_mounts() return errors
2012-07-14 16:37:27 +04:00
pnode.h
vfs: Only support slave subtrees across different user namespaces
2012-11-19 05:59:20 -08:00
posix_acl.c
userns: Convert vfs posix_acl support to use kuids and kgids
2012-09-18 01:01:35 -07:00
proc_namespace.c
get rid of magic in proc_namespace.c
2012-07-14 16:32:48 +04:00
read_write.c
lseek: the "whence" argument is called "whence"
2012-12-17 17:15:12 -08:00
read_write.h
compat: fs: Generic compat_sys_sendfile implementation
2012-10-02 21:35:55 -04:00
readdir.c
switch simple cases of fget_light to fdget
2012-09-26 22:20:08 -04:00
select.c
switch simple cases of fget_light to fdget
2012-09-26 22:20:08 -04:00
seq_file.c
lseek: the "whence" argument is called "whence"
2012-12-17 17:15:12 -08:00
signalfd.c
fs, epoll: add procfs fdinfo helper
2012-12-17 17:15:27 -08:00
splice.c
writeback: remove nr_pages_dirtied arg from balance_dirty_pages_ratelimited_nr()
2012-12-11 17:22:21 -08:00
stack.c
…
stat.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
statfs.c
switch simple cases of fget_light to fdget
2012-09-26 22:20:08 -04:00
super.c
vfs: drop lock/unlock super
2012-10-09 23:33:39 -04:00
sync.c
switch simple cases of fget_light to fdget
2012-09-26 22:20:08 -04:00
timerfd.c
switch simple cases of fget_light to fdget
2012-09-26 22:20:08 -04:00
utimes.c
switch simple cases of fget_light to fdget
2012-09-26 22:20:08 -04:00
xattr_acl.c
userns: Fix posix_acl_file_xattr_userns gid conversion
2012-10-12 13:16:48 -07:00
xattr.c
fs, xattr: fix bug when removing a name not in xattr list
2012-10-18 12:35:58 -07:00