redonkable/alistair23-linux
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alistair23-linux/fs/btrfs
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Liu Bo 87fa3bb078 Btrfs: fix regression of btrfs device replace 
Commit 49c6f736f34f901117c20960ebd7d5e60f12fcac(
btrfs: dev replace should replace the sysfs entry) added the missing sysfs entry
in the process of device replace, but didn't take missing devices into account,
so now we have

BUG: unable to handle kernel NULL pointer dereference at 0000000000000088
IP: [<ffffffffa0268551>] btrfs_kobj_rm_device+0x21/0x40 [btrfs]
...

To reproduce it,
1. mkfs.btrfs -f disk1 disk2
2. mkfs.ext4 disk1
3. mount disk2 /mnt -odegraded
4. btrfs replace start -B 1 disk3 /mnt
--------------------------

This fixes the problem.

Reported-by: Chris Murphy <lists@colorremedies.com>
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Tested-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
2014-08-21 07:55:20 -07:00
..
tests Btrfs: fix qgroups sanity test crash or hang 2014-06-13 09:52:24 -07:00
acl.c btrfs: remove useless ACL check 2014-06-09 17:20:42 -07:00
async-thread.c btrfs: fix crash in remount(thread_pool=) case 2014-04-07 10:41:52 -07:00
async-thread.h btrfs: Add trace for btrfs_workqueue alloc/destroy 2014-03-20 17:15:28 -07:00
backref.c Btrfs: Fix memory corruption by ulist_add_merge() on 32bit arch 2014-08-15 07:43:19 -07:00
backref.h Btrfs: fix scrub_print_warning to handle skinny metadata extents 2014-06-09 17:21:17 -07:00
btrfs_inode.h btrfs: disable strict file flushes for renames and truncates 2014-08-15 07:43:42 -07:00
check-integrity.c btrfs: check_int: propagate out-of-memory error upwards 2014-06-09 17:20:21 -07:00
check-integrity.h
compression.c btrfs compression: reuse recently used workspace 2014-06-28 13:48:46 -07:00
compression.h
ctree.c Btrfs: __btrfs_mod_ref should always use no_quota 2014-08-15 07:43:11 -07:00
ctree.h Btrfs: __btrfs_mod_ref should always use no_quota 2014-08-15 07:43:11 -07:00
delayed-inode.c btrfs: free delayed node outside of root->inode_lock 2014-06-09 17:21:08 -07:00
delayed-inode.h Btrfs: introduce the delayed inode ref deletion for the single link inode 2014-01-28 13:20:09 -08:00
delayed-ref.c Btrfs: rework qgroup accounting 2014-06-09 17:20:48 -07:00
delayed-ref.h Btrfs: rework qgroup accounting 2014-06-09 17:20:48 -07:00
dev-replace.c btrfs: dev replace should replace the sysfs entry 2014-06-28 13:48:44 -07:00
dev-replace.h
dir-item.c Btrfs: convert printk to btrfs_ and fix BTRFS prefix 2014-01-28 13:20:05 -08:00
disk-io.c Btrfs: Fix wrong device size when we are resizing the device 2014-08-19 08:52:18 -07:00
disk-io.h Btrfs: add sanity tests for new qgroup accounting code 2014-06-09 17:20:49 -07:00
export.c
export.h
extent-tree.c Btrfs: don't consider the missing device when allocating new chunks 2014-08-19 08:52:19 -07:00
extent_io.c btrfs: Return right extent when fiemap gives unaligned offset and len. 2014-08-19 08:52:14 -07:00
extent_io.h Btrfs: remove unused wait queue in struct extent_buffer 2014-06-19 14:20:28 -07:00
extent_map.c Btrfs: fix NULL pointer crash when running balance and scrub concurrently 2014-06-19 14:20:55 -07:00
extent_map.h Btrfs: fix NULL pointer crash when running balance and scrub concurrently 2014-06-19 14:20:55 -07:00
file-item.c Btrfs: fix csum tree corruption, duplicate and outdated checksums 2014-08-15 07:43:40 -07:00
file.c Btrfs: fill_holes: Fix slot number passed to hole_mergeable() call. 2014-08-19 08:36:26 -07:00
free-space-cache.c Btrfs: fix broken free space cache after the system crashed 2014-06-19 14:20:54 -07:00
free-space-cache.h
hash.c Btrfs: fix btrfs boot when compiled as built-in 2014-01-28 13:20:31 -08:00
hash.h Btrfs: fix btrfs boot when compiled as built-in 2014-01-28 13:20:31 -08:00
inode-item.c
inode-map.c btrfs: remove newline from inode cache kthread name 2014-06-09 17:20:53 -07:00
inode-map.h
inode.c Btrfs: fix wrong extent mapping for DirectIO 2014-08-19 08:52:13 -07:00
ioctl.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 2014-07-04 08:53:53 -07:00
Kconfig Btrfs: fix btrfs boot when compiled as built-in 2014-01-28 13:20:31 -08:00
locking.c Btrfs: fix deadlocks with trylock on tree nodes 2014-06-19 14:19:55 -07:00
locking.h
lzo.c btrfs: return errno instead of -1 from compression 2014-06-09 17:20:21 -07:00
Makefile Btrfs: add sanity tests for new qgroup accounting code 2014-06-09 17:20:49 -07:00
math.h
ordered-data.c btrfs: disable strict file flushes for renames and truncates 2014-08-15 07:43:42 -07:00
ordered-data.h btrfs: disable strict file flushes for renames and truncates 2014-08-15 07:43:42 -07:00
orphan.c
print-tree.c Btrfs: fix btrfs_print_leaf for skinny metadata 2014-07-03 07:04:16 -07:00
print-tree.h
props.c Btrfs: add support for inode properties 2014-01-28 13:20:24 -08:00
props.h Btrfs: add support for inode properties 2014-01-28 13:20:24 -08:00
qgroup.c btrfs: correctly handle return from ulist_add 2014-08-15 07:43:16 -07:00
qgroup.h btrfs: qgroup: account shared subtrees during snapshot delete 2014-08-15 07:43:14 -07:00
raid56.c Btrfs: fix crash when mounting raid5 btrfs with missing disks 2014-06-28 13:48:45 -07:00
raid56.h
rcu-string.h
reada.c Btrfs: fix unfinished readahead thread for raid5/6 degraded mounting 2014-06-13 09:52:21 -07:00
relocation.c btrfs: remove stale newlines from log messages 2014-06-09 17:20:53 -07:00
root-tree.c Btrfs: use bitfield instead of integer data type for the some variants in btrfs_root 2014-06-09 17:20:40 -07:00
scrub.c Btrfs: don't write any data into a readonly device when scrub 2014-08-19 08:52:17 -07:00
send.c Btrfs: send, use the right limits for xattr names and values 2014-06-09 17:21:00 -07:00
send.h
struct-funcs.c
super.c btrfs: adjust statfs calculations according to raid profiles 2014-08-15 07:43:10 -07:00
sysfs.c Btrfs: fix regression of btrfs device replace 2014-08-21 07:55:20 -07:00
sysfs.h btrfs: dev add should add its sysfs entry 2014-06-28 13:48:43 -07:00
transaction.c btrfs: disable strict file flushes for renames and truncates 2014-08-15 07:43:42 -07:00
transaction.h btrfs: disable strict file flushes for renames and truncates 2014-08-15 07:43:42 -07:00
tree-defrag.c Btrfs: use bitfield instead of integer data type for the some variants in btrfs_root 2014-06-09 17:20:40 -07:00
tree-log.c Btrfs: use helpers for last_trans_log_full_commit instead of opencode 2014-06-09 17:20:45 -07:00
tree-log.h Btrfs: use helpers for last_trans_log_full_commit instead of opencode 2014-06-09 17:20:45 -07:00
ulist.c Btrfs: do not export ulist functions 2014-01-29 07:06:27 -08:00
ulist.h Btrfs: Fix memory corruption by ulist_add_merge() on 32bit arch 2014-08-15 07:43:19 -07:00
uuid-tree.c Btrfs: convert printk to btrfs_ and fix BTRFS prefix 2014-01-28 13:20:05 -08:00
volumes.c Btrfs: Fix wrong device size when we are resizing the device 2014-08-19 08:52:18 -07:00
volumes.h Btrfs: fix deadlock when mounting a degraded fs 2014-06-19 14:20:56 -07:00
xattr.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 2014-01-30 20:08:20 -08:00
xattr.h
zlib.c btrfs: use E2BIG instead of EIO if compression does not help 2014-07-03 07:04:13 -07:00