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linux/fs/btrfs
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Filipe Manana 09ad914f65 Btrfs: fix inode eviction infinite loop after extent_same ioctl 
commit 113e828386 upstream.

If we pass a length of 0 to the extent_same ioctl, we end up locking an
extent range with a start offset greater then its end offset (if the
destination file's offset is greater than zero). This results in a warning
from extent_io.c:insert_state through the following call chain:

  btrfs_extent_same()
    btrfs_double_lock()
      lock_extent_range()
        lock_extent(inode->io_tree, offset, offset + len - 1)
          lock_extent_bits()
            __set_extent_bit()
              insert_state()
                --> WARN_ON(end < start)

This leads to an infinite loop when evicting the inode. This is the same
problem that my previous patch titled
"Btrfs: fix inode eviction infinite loop after cloning into it" addressed
but for the extent_same ioctl instead of the clone ioctl.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: Omar Sandoval <osandov@osandov.com>
Signed-off-by: Chris Mason <clm@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2015-05-06 21:59:08 +02:00
..
tests 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
acl.c btrfs: remove dead code 2014-01-28 13:19:50 -08:00
async-thread.c Btrfs: fix __btrfs_start_workers retval 2013-11-20 20:42:11 -05:00
async-thread.h Btrfs: eliminate races in worker stopping code 2013-10-04 16:02:13 -04:00
backref.c Btrfs: read lock extent buffer while walking backrefs 2014-09-05 16:34:16 -07:00
backref.h Btrfs: fix scrub_print_warning to handle skinny metadata extents 2014-06-30 20:12:02 -07:00
btrfs_inode.h Btrfs: add support for inode properties 2014-01-28 13:20:24 -08:00
check-integrity.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 2014-02-04 12:26:56 -08:00
check-integrity.h block: submit_bio_wait() conversions 2013-11-24 16:33:41 -07:00
compression.c mm + fs: prepare for non-page entries in page cache radix trees 2014-11-21 09:23:06 -08:00
compression.h btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
ctree.c btrfs: fix leak of path in btrfs_find_item 2015-03-06 14:43:32 -08:00
ctree.h btrfs: allocate raid type kobjects dynamically 2014-06-30 20:12:02 -07:00
delayed-inode.c Btrfs: don't delay inode ref updates during log replay 2015-01-16 06:59:34 -08:00
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: attach delayed ref updates to delayed ref heads 2014-01-28 13:20:25 -08:00
delayed-ref.h Btrfs: attach delayed ref updates to delayed ref heads 2014-01-28 13:20:25 -08:00
dev-replace.c Btrfs: convert printk to btrfs_ and fix BTRFS prefix 2014-01-28 13:20:05 -08:00
dev-replace.h Btrfs: add new sources for device replace code 2012-12-12 17:15:41 -05:00
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 leak of path in btrfs_find_item 2015-03-06 14:43:32 -08:00
disk-io.h Btrfs: add a sanity test for btrfs_split_item 2013-11-11 21:51:02 -05:00
export.c btrfs: remove fs/btrfs/compat.h 2013-11-11 22:03:19 -05:00
export.h NFS support for btrfs - v3 2008-09-25 11:04:06 -04:00
extent-tree.c Btrfs: fix log tree corruption when fs mounted with -o discard 2015-05-06 21:59:08 +02:00
extent_io.c mm: non-atomically mark page accessed during page cache allocation where possible 2015-01-29 17:40:52 -08:00
extent_io.h Btrfs: move the extent buffer radix tree into the fs_info 2014-01-28 13:19:55 -08:00
extent_map.c Btrfs: do not move em to modified list when unpinning 2015-01-08 10:00:51 -08:00
extent_map.h btrfs: Enclose macros with complex values within parenthesis 2013-11-11 22:12:06 -05:00
file-item.c Btrfs: fix kfree on list_head in btrfs_lookup_csums_range error cleanup 2014-11-14 09:00:13 -08:00
file.c Btrfs: fix data loss in the fast fsync path 2015-03-18 13:31:27 +01:00
free-space-cache.c Btrfs: output warning instead of error when loading free space cache failed 2014-06-30 20:12:01 -07:00
free-space-cache.h Btrfs: remove path arg from btrfs_truncate_free_space_cache 2013-11-11 21:51:33 -05:00
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 btrfs: cleanup: removed unused 'btrfs_get_inode_ref_index' 2014-01-28 13:19:39 -08:00
inode-map.c btrfs: Use WARN_ON()'s return value in place of WARN_ON(1) 2013-11-11 22:11:53 -05:00
inode-map.h Btrfs: Support reading/writing on disk free ino cache 2011-04-25 16:46:11 +08:00
inode.c btrfs: fix lost return value due to variable shadowing 2015-03-18 13:31:27 +01:00
ioctl.c Btrfs: fix inode eviction infinite loop after extent_same ioctl 2015-05-06 21:59:08 +02:00
Kconfig Btrfs: fix btrfs boot when compiled as built-in 2014-01-28 13:20:31 -08:00
locking.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
locking.h Btrfs: remove btrfs_try_spin_lock 2013-03-14 14:57:10 -04:00
lzo.c Btrfs: convert printk to btrfs_ and fix BTRFS prefix 2014-01-28 13:20:05 -08:00
Makefile Btrfs: fix btrfs boot when compiled as built-in 2014-01-28 13:20:31 -08:00
math.h Btrfs: cleanup duplicated division functions 2012-12-11 13:31:30 -05:00
ordered-data.c Btrfs: convert printk to btrfs_ and fix BTRFS prefix 2014-01-28 13:20:05 -08:00
ordered-data.h Btrfs: don't wait for the completion of all the ordered extents 2013-11-11 22:13:44 -05:00
orphan.c btrfs: expand btrfs_find_item() to include find_orphan_item functionality 2014-01-28 13:19:37 -08:00
print-tree.c Btrfs: don't use ram_bytes for uncompressed inline items 2014-01-29 07:06:29 -08:00
print-tree.h btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
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: fix qgroup rescan to work with skinny metadata 2014-01-28 13:20:27 -08:00
raid56.c block: Abstract out bvec iterator 2013-11-23 22:33:47 -08:00
raid56.h Btrfs: RAID5 and RAID6 2013-02-01 14:24:23 -05:00
rcu-string.h Btrfs: use rcu to protect device->name 2012-06-14 21:29:16 -04:00
reada.c Btrfs: convert printk to btrfs_ and fix BTRFS prefix 2014-01-28 13:20:05 -08:00
relocation.c Btrfs: fix build_backref_tree issue with multiple shared blocks 2014-10-30 09:38:18 -07:00
root-tree.c Btrfs: convert printk to btrfs_ and fix BTRFS prefix 2014-01-28 13:20:05 -08:00
scrub.c Btrfs: fix scrub_print_warning to handle skinny metadata extents 2014-06-30 20:12:02 -07:00
send.c Btrfs: send, fix data corruption due to incorrect hole detection 2014-10-30 09:38:19 -07:00
send.h btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
struct-funcs.c Btrfs: rewrite BTRFS_SETGET_FUNCS 2012-07-23 16:28:06 -04:00
super.c Btrfs: unset DCACHE_DISCONNECTED when mounting default subvol 2014-02-14 13:44:32 -08:00
sysfs.c btrfs: allocate raid type kobjects dynamically 2014-06-30 20:12:02 -07:00
sysfs.h btrfs: publish allocation data in sysfs 2014-01-28 13:19:29 -08:00
transaction.c Btrfs: fix race in WAIT_SYNC ioctl 2014-10-30 09:38:19 -07:00
transaction.h Btrfs: make fsync latency less sucky 2014-01-28 13:20:25 -08:00
tree-defrag.c Btrfs: cleanup dead code of defragment 2013-11-11 21:59:45 -05:00
tree-log.c btrfs: simplify insert_orphan_item 2015-04-19 10:11:06 +02:00
tree-log.h btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
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 2014-09-05 16:34:16 -07:00
uuid-tree.c Btrfs: convert printk to btrfs_ and fix BTRFS prefix 2014-01-28 13:20:05 -08:00
volumes.c fs: btrfs: volumes.c: Fix for possible null pointer dereference 2014-06-30 20:12:01 -07:00
volumes.h btrfs: Pack struct btrfs_device 2013-11-11 22:11:26 -05:00
xattr.c btrfs: don't accept bare namespace as a valid xattr 2015-05-06 21:59:08 +02:00
xattr.h btrfs: use generic posix ACL infrastructure 2014-01-25 23:58:18 -05:00
zlib.c Btrfs: convert printk to btrfs_ and fix BTRFS prefix 2014-01-28 13:20:05 -08:00