Filipe Manana 75c68e9fbb Btrfs: fix race deleting block group from space_info->ro_bgs list ... When removing a block group we were deleting it from its space_info's ro_bgs list without the correct protection - the space info's spinlock. Fix this by doing the list delete while holding the spinlock of the corresponding space info, which is the correct lock for any operation on that list. This issue was introduced in the 3.19 kernel by the following change: Btrfs: move read only block groups onto their own list V2 commit 633c0aad4c I ran into a kernel crash while a task was running statfs, which iterates the space_info->ro_bgs list while holding the space info's spinlock, and another task was deleting it from the same list, without holding that spinlock, as part of the block group remove operation (while running the function btrfs_remove_block_group). This happened often when running the stress test xfstests/generic/038 I recently made. Signed-off-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: Chris Mason <clm@fb.com>		2015-01-19 13:05:45 -08:00
..
tests	Btrfs: remove empty block groups automatically	2014-09-22 17:13:21 -07:00
acl.c
async-thread.c	btrfs: remove unlikely from NULL checks	2014-10-02 16:06:19 +02:00
async-thread.h	Btrfs: implement repair function when direct read fails	2014-09-17 13:39:01 -07:00
backref.c	Btrfs: correctly get tree level in tree_backref_for_extent	2015-01-02 14:47:56 -05:00
backref.h
btrfs_inode.h	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs	2014-10-11 08:03:52 -04:00
check-integrity.c	Btrfs: include vmalloc.h in check-integrity.c	2014-11-25 06:01:11 -08:00
check-integrity.h
compression.c	Btrfs: don't ignore compressed bio write errors	2014-11-20 17:14:26 -08:00
compression.h
ctree.c	Merge branch 'raid56-scrub-replace' of git://github.com/miaoxie/linux-btrfs into for-linus	2014-12-02 18:42:03 -08:00
ctree.h	Btrfs: fix race deleting block group from space_info->ro_bgs list	2015-01-19 13:05:45 -08:00
delayed-inode.c	Btrfs: don't delay inode ref updates during log replay	2015-01-02 14:47:56 -05:00
delayed-inode.h
delayed-ref.c
delayed-ref.h
dev-replace.c	Merge branch 'raid56-scrub-replace' of git://github.com/miaoxie/linux-btrfs into for-linus	2014-12-02 18:42:03 -08:00
dev-replace.h
dir-item.c	Btrfs: make xattr replace operations atomic	2014-11-20 17:20:07 -08:00
disk-io.c	Btrfs: fix fs corruption on transaction abort if device supports discard	2014-12-10 12:22:31 -08:00
disk-io.h	Merge branch 'cleanup/blocksize-diet-part1' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus	2014-10-04 09:57:14 -07:00
export.c
export.h
extent-tree.c	Btrfs: fix race deleting block group from space_info->ro_bgs list	2015-01-19 13:05:45 -08:00
extent_io.c	Btrfs: avoid premature -ENOMEM in clear_extent_bit()	2014-11-20 17:20:06 -08:00
extent_io.h	Btrfs: set page and mapping error on compressed write failure	2014-11-20 17:14:25 -08:00
extent_map.c	Btrfs: do not move em to modified list when unpinning	2014-11-21 11:59:54 -08:00
extent_map.h
file-item.c	Btrfs: fix kfree on list_head in btrfs_lookup_csums_range error cleanup	2014-11-04 06:59:04 -08:00
file.c	Btrfs: fix snapshot inconsistency after a file write followed by truncate	2014-11-25 07:41:23 -08:00
free-space-cache.c	Btrfs: remove non-sense btrfs_error_discard_extent() function	2014-12-10 12:22:32 -08:00
free-space-cache.h	Btrfs: fix race between writing free space cache and trimming	2014-12-02 18:35:09 -08:00
hash.c	btrfs: LLVMLinux: Remove VLAIS	2014-10-14 10:51:22 +02:00
hash.h
inode-item.c
inode-map.c	Btrfs: fix race between writing free space cache and trimming	2014-12-02 18:35:09 -08:00
inode-map.h
inode.c	Btrfs: call inode_dec_link_count() on mkdir error path	2015-01-02 14:47:55 -05:00
ioctl.c	Btrfs: fix snapshot inconsistency after a file write followed by truncate	2014-11-25 07:41:23 -08:00
Kconfig
locking.c	btrfs: fix lockups from btrfs_clear_path_blocking	2014-11-19 10:34:35 -08:00
locking.h	btrfs: fix lockups from btrfs_clear_path_blocking	2014-11-19 10:34:35 -08:00
lzo.c
Makefile
math.h
ordered-data.c	Btrfs: collect only the necessary ordered extents on ranged fsync	2014-11-21 11:59:56 -08:00
ordered-data.h	Btrfs: collect only the necessary ordered extents on ranged fsync	2014-11-21 11:59:56 -08:00
orphan.c
print-tree.c	btrfs: remove parameter blocksize from read_tree_block	2014-10-02 17:14:50 +02:00
print-tree.h
props.c
props.h
qgroup.c	btrfs: move checks for DUMMY_ROOT into a helper	2014-10-02 17:30:33 +02:00
qgroup.h
raid56.c	Btrfs, raid56: fix use-after-free problem in the final device replace procedure on raid56	2014-12-03 10:18:47 +08:00
raid56.h	Btrfs, raid56: fix use-after-free problem in the final device replace procedure on raid56	2014-12-03 10:18:47 +08:00
rcu-string.h
reada.c
relocation.c	Merge branch 'cleanup/blocksize-diet-part1' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus	2014-10-04 09:57:14 -07:00
root-tree.c
scrub.c	Btrfs: fix incorrect freeing in scrub_stripe	2015-01-19 13:05:44 -08:00
send.c	Btrfs: ensure send always works on roots without orphans	2014-11-25 07:41:23 -08:00
send.h
struct-funcs.c
super.c	btrfs: sync ioctl, handle errors after transaction start	2015-01-19 13:05:44 -08:00
sysfs.c	btrfs: move commit out of sysfs when changing label	2014-11-12 16:53:15 +01:00
sysfs.h
transaction.c	Merge branch 'dev/pending-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus	2014-11-25 05:45:30 -08:00
transaction.h	Merge branch 'dev/pending-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus	2014-11-25 05:45:30 -08:00
tree-defrag.c
tree-log.c	Btrfs: ensure ordered extent errors aren't missed on fsync	2014-11-21 11:59:57 -08:00
tree-log.h	Btrfs: fix data corruption after fast fsync and writeback error	2014-09-19 06:57:51 -07:00
ulist.c
ulist.h
uuid-tree.c
volumes.c	Merge branch 'raid56-scrub-replace' of git://github.com/miaoxie/linux-btrfs into for-linus	2014-12-02 18:42:03 -08:00
volumes.h	Merge branch 'raid56-scrub-replace' of git://github.com/miaoxie/linux-btrfs into for-linus	2014-12-02 18:42:03 -08:00
xattr.c	Btrfs: make xattr replace operations atomic	2014-11-20 17:20:07 -08:00
xattr.h
zlib.c