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Jan Kara f759741d9d block: Fix oops in locked_inode_to_wb_and_lock_list() 
When block device is closed, we call inode_detach_wb() in __blkdev_put()
which sets inode->i_wb to NULL. That is contrary to expectations that
inode->i_wb stays valid once set during the whole inode's lifetime and
leads to oops in wb_get() in locked_inode_to_wb_and_lock_list() because
inode_to_wb() returned NULL.

The reason why we called inode_detach_wb() is not valid anymore though.
BDI is guaranteed to stay along until we call bdi_put() from
bdev_evict_inode() so we can postpone calling inode_detach_wb() to that
moment.

Also add a warning to catch if someone uses inode_detach_wb() in a
dangerous way.

Reported-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>
2017-03-22 20:11:33 -06:00
..
9p
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2017-03-03 21:44:35 -08:00
adfs
…
affs
sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h>
2017-03-02 08:42:31 +01:00
afs
afs: Don't wait for page writeback with the page lock held
2017-03-16 16:29:30 +00:00
autofs4
sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h>
2017-03-02 08:42:31 +01:00
befs
sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h>
2017-03-02 08:42:31 +01:00
bfs
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
btrfs
Merge branch 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2017-03-03 11:38:56 -08:00
cachefiles
sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h>
2017-03-02 08:42:31 +01:00
ceph
Merge branch 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2017-03-03 11:38:56 -08:00
cifs
Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6
2017-03-03 16:00:59 -08:00
coda
Merge branch 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2017-03-03 11:38:56 -08:00
configfs
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
cramfs
…
crypto
KEYS: Differentiate uses of rcu_dereference_key() and user_key_payload()
2017-03-02 10:09:00 +11:00
debugfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2017-02-23 20:33:51 -08:00
devpts
…
dlm
net: Work around lockdep limitation in sockets that use sockets
2017-03-09 18:23:27 -08:00
ecryptfs
Merge branch 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2017-03-03 11:38:56 -08:00
efivarfs
…
efs
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
exofs
locking/atomic, kref: Add kref_read()
2017-01-14 11:37:18 +01:00
exportfs
Merge branch 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2017-03-03 11:38:56 -08:00
ext2
sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h>
2017-03-02 08:42:31 +01:00
ext4
Merge branch 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2017-03-03 11:38:56 -08:00
f2fs
Merge branch 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2017-03-03 11:38:56 -08:00
fat
fat: fix using uninitialized fields of fat_inode/fsinfo_inode
2017-03-09 17:01:10 -08:00
freevxfs
…
fscache
KEYS: Differentiate uses of rcu_dereference_key() and user_key_payload()
2017-03-02 10:09:00 +11:00
fuse
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
2017-03-03 12:14:13 -08:00
gfs2
gfs2: Avoid alignment hole in struct lm_lockname
2017-03-15 10:06:07 -04:00
hfs
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2017-03-03 21:44:35 -08:00
hfsplus
sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h>
2017-03-02 08:42:31 +01:00
hostfs
…
hpfs
sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>
2017-03-02 08:42:32 +01:00
hugetlbfs
sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>
2017-03-02 08:42:32 +01:00
isofs
sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h>
2017-03-02 08:42:31 +01:00
jbd2
For this cycle we add support for the shutdown ioctl, which is
2017-02-20 18:24:39 -08:00
jffs2
sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>
2017-03-02 08:42:32 +01:00
jfs
fs: add i_blocksize()
2017-02-27 18:43:46 -08:00
kernfs
Merge branch 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2017-03-03 11:38:56 -08:00
lockd
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h>
2017-03-02 08:42:29 +01:00
minix
statx: Add a system call to make enhanced file info available
2017-03-02 20:51:15 -05:00
ncpfs
Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2017-03-03 10:16:38 -08:00
nfs
NFS client fixes for 4.11
2017-03-17 14:16:22 -07:00
nfs_common
…
nfsd
Merge branch 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2017-03-03 11:38:56 -08:00
nilfs2
sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>
2017-03-02 08:42:32 +01:00
nls
…
notify
sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>
2017-03-02 08:42:32 +01:00
ntfs
sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>
2017-03-02 08:42:32 +01:00
ocfs2
net: Work around lockdep limitation in sockets that use sockets
2017-03-09 18:23:27 -08:00
omfs
sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h>
2017-03-02 08:42:31 +01:00
openpromfs
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
orangefs
Merge branch 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2017-03-03 11:38:56 -08:00
overlayfs
overlayfs: remove now unnecessary header file include
2017-03-08 10:42:13 -08:00
proc
Merge branch 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2017-03-03 11:38:56 -08:00
pstore
fs/pstore: fs/squashfs: change usage of LZ4 to work with new LZ4 version
2017-02-24 17:46:57 -08:00
qnx4
…
qnx6
…
quota
sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h>
2017-03-02 08:42:31 +01:00
ramfs
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
reiserfs
fs: add i_blocksize()
2017-02-27 18:43:46 -08:00
romfs
romfs: use different way to generate fsid for BLOCK or MTD
2017-01-24 16:26:14 -08:00
squashfs
fs/pstore: fs/squashfs: change usage of LZ4 to work with new LZ4 version
2017-02-24 17:46:57 -08:00
sysfs
…
sysv
statx: Add a system call to make enhanced file info available
2017-03-02 20:51:15 -05:00
tracefs
…
ubifs
statx: Add a system call to make enhanced file info available
2017-03-02 20:51:15 -05:00
udf
statx: Add a system call to make enhanced file info available
2017-03-02 20:51:15 -05:00
ufs
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
xfs
xfs: verify inline directory data forks
2017-03-15 00:24:25 -07:00
aio.c
Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2017-03-03 10:16:38 -08:00
anon_inodes.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
attr.c
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h>
2017-03-02 08:42:29 +01:00
bad_inode.c
statx: Add a system call to make enhanced file info available
2017-03-02 20:51:15 -05:00
binfmt_aout.c
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>
2017-03-02 08:42:36 +01:00
binfmt_elf_fdpic.c
sched/headers: Prepare to move cputime functionality from <linux/sched.h> into <linux/sched/cputime.h>
2017-03-02 08:42:39 +01:00
binfmt_elf.c
sched/headers: Prepare to move cputime functionality from <linux/sched.h> into <linux/sched/cputime.h>
2017-03-02 08:42:39 +01:00
binfmt_em86.c
…
binfmt_flat.c
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>
2017-03-02 08:42:36 +01:00
binfmt_misc.c
sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h>
2017-03-02 08:42:37 +01:00
binfmt_script.c
…
block_dev.c
block: Fix oops in locked_inode_to_wb_and_lock_list()
2017-03-22 20:11:33 -06:00
buffer.c
sched/headers: Prepare for the reduction of <linux/sched.h>'s signal API dependency
2017-03-02 08:42:37 +01:00
char_dev.c
…
compat_binfmt_elf.c
fs/binfmt: Convert obsolete cputime type to nsecs
2017-02-01 09:13:51 +01:00
compat_ioctl.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
compat.c
sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h>
2017-03-02 08:42:31 +01:00
coredump.c
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>
2017-03-02 08:42:36 +01:00
dax.c
sched/headers: Prepare for the reduction of <linux/sched.h>'s signal API dependency
2017-03-02 08:42:37 +01:00
dcache.c
mnt: Protect the mountpoint hashtable with mount_lock
2017-01-10 13:34:43 +13:00
dcookies.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
direct-io.c
fs: add i_blocksize()
2017-02-27 18:43:46 -08:00
drop_caches.c
…
eventfd.c
sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>
2017-03-02 08:42:32 +01:00
eventpoll.c
sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>
2017-03-02 08:42:32 +01:00
exec.c
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task.h>
2017-03-02 08:42:35 +01:00
fcntl.c
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task.h>
2017-03-02 08:42:35 +01:00
fhandle.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
file_table.c
sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h>
2017-03-02 08:42:31 +01:00
file.c
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h>
2017-03-02 08:42:29 +01:00
filesystems.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
fs_pin.c
…
fs_struct.c
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task.h>
2017-03-02 08:42:35 +01:00
fs-writeback.c
writeback: fix memory leak in wb_queue_work()
2017-03-13 08:27:34 -06:00
inode.c
…
internal.h
iomap: constify struct iomap_ops
2017-01-30 16:32:25 -08:00
ioctl.c
sched/headers: Prepare for the reduction of <linux/sched.h>'s signal API dependency
2017-03-02 08:42:37 +01:00
iomap.c
iomap: invalidate page caches should be after iomap_dio_complete() in direct write
2017-03-06 09:50:01 -08:00
Kconfig
dax: fix build warnings with FS_DAX and !FS_IOMAP
2017-01-24 16:26:14 -08:00
Kconfig.binfmt
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libfs.c
Merge branch 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2017-03-03 11:38:56 -08:00
locks.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
Makefile
logfs: remove from tree
2016-12-14 23:48:11 -05:00
mbcache.c
…
mount.h
mnt: Tuck mounts under others instead of creating shadow/side mounts.
2017-02-04 00:01:06 +13:00
mpage.c
fs: add i_blocksize()
2017-02-27 18:43:46 -08:00
namei.c
Merge remote-tracking branch 'ovl/for-viro' into for-linus
2017-03-02 06:41:22 -05:00
namespace.c
sched/headers: Prepare to move 'init_task' and 'init_thread_union' from <linux/sched.h> to <linux/sched/task.h>
2017-03-02 08:42:38 +01:00
no-block.c
…
nsfs.c
nsfs: Add an ioctl() to return owner UID of a userns
2017-02-03 14:35:43 +13:00
open.c
vfs: wrap write f_ops with file_{start,end}_write()
2017-02-07 15:05:04 +01:00
pipe.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
pnode.c
mnt: Tuck mounts under others instead of creating shadow/side mounts.
2017-02-04 00:01:06 +13:00
pnode.h
mnt: Tuck mounts under others instead of creating shadow/side mounts.
2017-02-04 00:01:06 +13:00
posix_acl.c
sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h>
2017-03-02 08:42:31 +01:00
proc_namespace.c
sched/headers: Prepare to move the task_lock()/unlock() APIs to <linux/sched/task.h>
2017-03-02 08:42:38 +01:00
read_write.c
Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2017-03-03 10:16:38 -08:00
readdir.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
select.c
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h>
2017-03-02 08:42:29 +01:00
seq_file.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
signalfd.c
…
splice.c
Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2017-03-03 10:16:38 -08:00
stack.c
…
stat.c
Merge branch 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2017-03-03 11:38:56 -08:00
statfs.c
…
super.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2017-02-23 20:33:51 -08:00
sync.c
vfs: use helper for calling f_op->fsync()
2017-02-20 16:51:23 +01:00
timerfd.c
timerfd: Only check CAP_WAKE_ALARM when it is needed
2017-03-01 12:53:44 +01:00
userfaultfd.c
Merge branch 'prep-for-5level'
2017-03-10 08:59:07 -08:00
utimes.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
xattr.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00