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053ab70f06
linux/fs/btrfs
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Liu Bo 053ab70f06 Btrfs: check btree node's nritems 
When btree node (level = 1) has nritems which equals to zero,
we can end up with panic due to insert_ptr()'s

BUG_ON(slot > nritems);

where slot is 1 and nritems is 0, as copy_for_split() calls
insert_ptr(.., path->slots[1] + 1, ...);

A invalid value results in the whole mess, this adds the check
for btree's node nritems so that we stop reading block when
when something is wrong.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Chris Mason <clm@fb.com>
2016-08-25 03:58:30 -07:00
..
tests btrfs: tests, require fs_info for root 2016-07-26 13:53:18 +02:00
acl.c btrfs: Replace -ENOENT by -ERANGE in btrfs_get_acl() 2016-07-26 13:52:25 +02:00
async-thread.c btrfs: plumb fs_info into btrfs_work 2016-07-26 13:53:15 +02:00
async-thread.h btrfs: plumb fs_info into btrfs_work 2016-07-26 13:53:15 +02:00
backref.c btrfs: backref: Fix soft lockup in __merge_refs function 2016-08-25 03:58:16 -07:00
backref.h
btrfs_inode.h Merge branch 'cleanups-4.7' into for-chris-4.7-20160525 2016-05-25 22:51:03 +02:00
check-integrity.c btrfs: Use correct format specifier 2016-06-17 18:32:40 +02:00
check-integrity.h
compression.c Btrfs: fix BUG_ON in btrfs_submit_compressed_write 2016-07-26 13:52:25 +02:00
compression.h btrfs: move btrfs_compression_type to compression.h 2016-03-11 17:12:46 +01:00
ctree.c btrfs: btrfs_abort_transaction, drop root parameter 2016-07-26 13:54:26 +02:00
ctree.h btrfs: fix fsfreeze hang caused by delayed iputs deal 2016-08-25 03:58:26 -07:00
dedupe.h btrfs: expand cow_file_range() to support in-band dedup and subpage-blocksize 2016-07-26 13:52:25 +02:00
delayed-inode.c btrfs: btrfs_abort_transaction, drop root parameter 2016-07-26 13:54:26 +02:00
delayed-inode.h Btrfs: fix ->iterate_shared() by upgrading i_rwsem for delayed nodes 2016-06-25 06:20:10 -07:00
delayed-ref.c btrfs: qgroup: Refactor btrfs_qgroup_insert_dirty_extent() 2016-08-25 03:58:21 -07:00
delayed-ref.h Btrfs: remove unused function btrfs_add_delayed_qgroup_reserve() 2016-08-03 11:02:51 +01:00
dev-replace.c btrfs: btrfs_test_opt and friends should take a btrfs_fs_info 2016-07-26 13:53:16 +02:00
dev-replace.h btrfs: refactor btrfs_dev_replace_start for reuse 2016-04-28 10:59:13 +02:00
dir-item.c
disk-io.c Btrfs: check btree node's nritems 2016-08-25 03:58:30 -07:00
disk-io.h btrfs: don't create or leak aliased root while cleaning up orphans 2016-08-25 03:58:29 -07:00
export.c BTRFS: support NFSv2 export 2015-10-06 06:55:23 -07:00
export.h
extent_io.c Btrfs: fix eb memory leak due to readpage failure 2016-07-26 13:52:25 +02:00
extent_io.h btrfs: update btrfs_space_info's bytes_may_use timely 2016-08-25 03:58:26 -07:00
extent_map.c btrfs: Fix slab accounting flags 2016-07-26 13:52:25 +02:00
extent_map.h btrfs: cleanup, stop casting for extent_map->lookup everywhere 2016-01-15 19:22:28 +01:00
extent-tree.c Btrfs: fix em leak in find_first_block_group 2016-08-25 03:58:29 -07:00
file-item.c Btrfs: fix __MAX_CSUM_ITEMS 2016-08-03 14:08:37 -07:00
file.c btrfs: update btrfs_space_info's bytes_may_use timely 2016-08-25 03:58:26 -07:00
free-space-cache.c btrfs: btrfs_abort_transaction, drop root parameter 2016-07-26 13:54:26 +02:00
free-space-cache.h btrfs: fix string and comment grammatical issues and typos 2016-05-25 22:35:14 +02:00
free-space-tree.c btrfs: btrfs_abort_transaction, drop root parameter 2016-07-26 13:54:26 +02:00
free-space-tree.h Btrfs: implement the free space B-tree 2015-12-17 12:16:47 -08:00
hash.c btrfs: advertise which crc32c implementation is being used at module load 2016-06-06 14:08:28 +02:00
hash.h btrfs: advertise which crc32c implementation is being used at module load 2016-06-06 14:08:28 +02:00
inode-item.c btrfs: rename btrfs_std_error to btrfs_handle_fs_error 2016-04-28 10:36:54 +02:00
inode-map.c btrfs: update btrfs_space_info's bytes_may_use timely 2016-08-25 03:58:26 -07:00
inode-map.h Btrfs: Initialize btrfs_root->highest_objectid when loading tree root and subvolume roots 2016-01-15 19:25:02 +01:00
inode.c btrfs: update btrfs_space_info's bytes_may_use timely 2016-08-25 03:58:26 -07:00
ioctl.c btrfs: waiting on qgroup rescan should not always be interruptible 2016-08-25 03:58:20 -07:00
Kconfig
locking.c btrfs: cleanup, remove stray return statements 2016-01-07 14:30:52 +01:00
locking.h
lzo.c mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
Makefile Btrfs: add free space tree sanity tests 2015-12-17 12:16:47 -08:00
math.h btrfs: cleanup 64bit/32bit divs, compile time constants 2015-03-03 17:23:57 +01:00
ordered-data.c btrfs: Fix slab accounting flags 2016-07-26 13:52:25 +02:00
ordered-data.h Btrfs: fix race setting block group readonly during device replace 2016-05-30 12:58:21 +01:00
orphan.c
print-tree.c btrfs: teach print_leaf about temporary item subtypes 2016-02-11 16:15:43 +01:00
print-tree.h
props.c btrfs: simpilify btrfs_subvol_inherit_props 2016-07-26 13:54:22 +02:00
props.h
qgroup.c btrfs: qgroup: Refactor btrfs_qgroup_insert_dirty_extent() 2016-08-25 03:58:21 -07:00
qgroup.h btrfs: qgroup: Refactor btrfs_qgroup_insert_dirty_extent() 2016-08-25 03:58:21 -07:00
raid56.c btrfs: fix string and comment grammatical issues and typos 2016-05-25 22:35:14 +02:00
raid56.h Btrfs: add RAID 5/6 BTRFS_RBIO_REBUILD_MISSING operation 2015-08-09 07:34:26 -07:00
rcu-string.h
reada.c Btrfs: fix race between readahead and device replace/removal 2016-05-30 12:58:18 +01:00
relocation.c btrfs: update btrfs_space_info's bytes_may_use timely 2016-08-25 03:58:26 -07:00
root-tree.c btrfs: don't create or leak aliased root while cleaning up orphans 2016-08-25 03:58:29 -07:00
scrub.c btrfs: plumb fs_info into btrfs_work 2016-07-26 13:53:15 +02:00
send.c Btrfs: send, don't bug on inconsistent snapshots 2016-08-01 07:31:41 +01:00
send.h Btrfs: use linux/sizes.h to represent constants 2016-01-07 14:38:02 +01:00
struct-funcs.c btrfs: fix string and comment grammatical issues and typos 2016-05-25 22:35:14 +02:00
super.c btrfs: fix fsfreeze hang caused by delayed iputs deal 2016-08-25 03:58:26 -07:00
sysfs.c btrfs: add missing bytes_readonly attribute file in sysfs 2016-07-26 13:52:25 +02:00
sysfs.h btrfs: sysfs: introduce helper for syncing bits with sysfs files 2016-01-21 18:50:40 +01:00
transaction.c btrfs: fix fsfreeze hang caused by delayed iputs deal 2016-08-25 03:58:26 -07:00
transaction.h btrfs: add btrfs_trans_handle->fs_info pointer 2016-07-26 13:54:26 +02:00
tree-defrag.c Btrfs: fix locking bugs when defragging leaves 2015-12-18 02:51:32 +00:00
tree-log.c btrfs: qgroup: Fix qgroup incorrectness caused by log replay 2016-08-25 03:58:23 -07:00
tree-log.h Btrfs: fix unreplayable log after snapshot delete + parent dir fsync 2016-03-01 08:23:25 -08:00
ulist.c btrfs: fix string and comment grammatical issues and typos 2016-05-25 22:35:14 +02:00
ulist.h btrfs: ulist: Add ulist_del() function. 2015-06-10 09:26:17 -07:00
uuid-tree.c
volumes.c btrfs: do not background blkdev_put() 2016-08-25 03:58:28 -07:00
volumes.h Merge branch 'foreign/jeffm/uapi' into for-chris-4.7-20160516 2016-05-16 15:46:29 +02:00
xattr.c switch xattr_handler->set() to passing dentry and inode separately 2016-05-27 15:39:43 -04:00
xattr.h btrfs: Switch to generic xattr handlers 2016-05-17 19:17:09 -04:00
zlib.c mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00