AuxXxilium/linux_dsm_epyc7002
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ba480dd4db
linux_dsm_epyc7002/fs/btrfs
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Qu Wenruo ba480dd4db btrfs: tree-checker: Detect invalid and empty essential trees 
A crafted image has empty root tree block, which will later cause NULL
pointer dereference.

The following trees should never be empty:
1) Tree root
   Must contain at least root items for extent tree, device tree and fs
   tree

2) Chunk tree
   Or we can't even bootstrap as it contains the mapping.

3) Fs tree
   At least inode item for top level inode (.).

4) Device tree
   Dev extents for chunks

5) Extent tree
   Must have corresponding extent for each chunk.

If any of them is empty, we are sure the fs is corrupted and no need to
mount it.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=199847
Reported-by: Xu Wen <wen.xu@gatech.edu>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Tested-by: Gu Jinxiang <gujx@cn.fujitsu.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2018-08-06 13:12:42 +02:00
..
tests btrfs: tests: drop newline from test_msg strings 2018-05-29 18:12:52 +02:00
acl.c btrfs: remove unnecessary curly braces in btrfs_get_acl 2018-08-06 13:12:41 +02:00
async-thread.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
async-thread.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
backref.c btrfs: return EUCLEAN if extent_inline_ref type is invalid 2018-08-06 13:12:40 +02:00
backref.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
btrfs_inode.h btrfs: use timespec64 for i_otime 2018-08-06 13:12:39 +02:00
check-integrity.c btrfs: check-integrity: Fix NULL pointer dereference for degraded mount 2018-08-06 13:12:38 +02:00
check-integrity.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
compression.c btrfs: replace waitqueue_actvie with cond_wake_up 2018-05-28 18:23:09 +02:00
compression.h btrfs: compression: Add linux/sizes.h for compression.h 2018-05-29 18:13:00 +02:00
ctree.c btrfs: Remove V0 extent support 2018-08-06 13:12:41 +02:00
ctree.h btrfs: Add graceful handling of V0 extents 2018-08-06 13:12:41 +02:00
dedupe.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
delayed-inode.c btrfs: replace waitqueue_actvie with cond_wake_up 2018-05-28 18:23:09 +02:00
delayed-inode.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
delayed-ref.c btrfs: Streamline memory allocation failure handling in btrfs_add_delayed_tree_ref 2018-08-06 13:12:39 +02:00
delayed-ref.h btrfs: Remove fs_info from btrfs_add_delayed_data_ref 2018-08-06 13:12:34 +02:00
dev-replace.c btrfs: replace get_seconds with new 64bit time API 2018-08-06 13:12:29 +02:00
dev-replace.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
dir-item.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
disk-io.c btrfs: print more details when checking tree block finds a problem 2018-08-06 13:12:39 +02:00
disk-io.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
export.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
export.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
extent_io.c for-4.18-rc5-tag 2018-07-21 16:42:03 -07:00
extent_io.h btrfs: Remove tree argument from extent_writepages 2018-05-28 18:07:20 +02:00
extent_map.c btrfs: use fs_info for btrfs_handle_em_exist tracepoint 2018-05-28 18:07:17 +02:00
extent_map.h btrfs: use fs_info for btrfs_handle_em_exist tracepoint 2018-05-28 18:07:17 +02:00
extent-tree.c btrfs: annotate unlikely branches after V0 extent type removal 2018-08-06 13:12:41 +02:00
file-item.c btrfs: Get rid of the confusing btrfs_file_extent_inline_len 2018-08-06 13:12:38 +02:00
file.c btrfs: Use iocb to derive pos instead of passing a separate parameter 2018-08-06 13:12:40 +02:00
free-space-cache.c Btrfs: stop creating orphan items for truncate 2018-05-28 18:23:46 +02:00
free-space-cache.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
free-space-tree.c btrfs: Remove fs_info argument from populate_free_space_tree 2018-05-28 18:07:36 +02:00
free-space-tree.h btrfs: Remove fs_info argument from add_to_free_space_tree 2018-05-28 18:07:36 +02:00
inode-item.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
inode-map.c btrfs: Refactor count handling in btrfs_unpin_free_ino 2018-08-06 13:12:39 +02:00
inode-map.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
inode.c btrfs: use timespec64 for i_otime 2018-08-06 13:12:39 +02:00
ioctl.c btrfs: Deduplicate extent_buffer init code 2018-08-06 13:12:38 +02:00
Kconfig btrfs: add SPDX header to Kconfig 2018-04-12 16:29:55 +02:00
locking.c btrfs: replace waitqueue_actvie with cond_wake_up 2018-05-28 18:23:09 +02:00
locking.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
lzo.c btrfs: lzo: Harden inline lzo compressed extent decompression 2018-05-30 16:46:43 +02:00
Makefile btrfs: Remove custom crc32c init code 2018-03-26 15:09:39 +02:00
math.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
ordered-data.c btrfs: remove remaing full_sync logic from btrfs_sync_file 2018-08-06 13:12:31 +02:00
ordered-data.h btrfs: remove remaing full_sync logic from btrfs_sync_file 2018-08-06 13:12:31 +02:00
orphan.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
print-tree.c btrfs: annotate unlikely branches after V0 extent type removal 2018-08-06 13:12:41 +02:00
print-tree.h btrfs: print-tree: debugging output enhancement 2018-04-20 19:18:16 +02:00
props.c btrfs: property: Set incompat flag if lzo/zstd compression is set 2018-05-17 14:18:25 +02:00
props.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
qgroup.c Btrfs: fix mount failure when qgroup rescan is in progress 2018-06-28 11:30:57 +02:00
qgroup.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
raid56.c btrfs: raid56: Remove VLA usage 2018-05-30 17:15:43 +02:00
raid56.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
rcu-string.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
reada.c btrfs: Fix misleading indentation reported by smatch 2018-08-06 13:12:31 +02:00
ref-verify.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
ref-verify.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
relocation.c btrfs: annotate unlikely branches after V0 extent type removal 2018-08-06 13:12:41 +02:00
root-tree.c vfs: change inode times to use struct timespec64 2018-06-05 16:57:31 -07:00
scrub.c btrfs: Remove fs_info from btrfs_inc_block_group_ro 2018-08-06 13:12:37 +02:00
send.c btrfs: Get rid of the confusing btrfs_file_extent_inline_len 2018-08-06 13:12:38 +02:00
send.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
struct-funcs.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
super.c btrfs: Fix a C compliance issue 2018-08-06 13:12:31 +02:00
sysfs.c btrfs: sysfs: Add entry which shows if rmdir can work on subvolumes 2018-05-28 18:23:41 +02:00
sysfs.h btrfs: sysfs: Use enum/define value for feature array definitions 2018-05-28 18:23:39 +02:00
transaction.c btrfs: use monotonic time for transaction handling 2018-08-06 13:12:38 +02:00
transaction.h btrfs: replace get_seconds with new 64bit time API 2018-08-06 13:12:29 +02:00
tree-checker.c btrfs: tree-checker: Detect invalid and empty essential trees 2018-08-06 13:12:42 +02:00
tree-checker.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
tree-defrag.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
tree-log.c btrfs: Get rid of the confusing btrfs_file_extent_inline_len 2018-08-06 13:12:38 +02:00
tree-log.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
ulist.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
ulist.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
uuid-tree.c btrfs: Remove fs_info argument from btrfs_uuid_tree_rem 2018-05-30 16:46:53 +02:00
volumes.c btrfs: tree-checker: Verify block_group_item 2018-08-06 13:12:41 +02:00
volumes.h btrfs: tree-checker: Verify block_group_item 2018-08-06 13:12:41 +02:00
xattr.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
xattr.h btrfs: replace GPL boilerplate by SPDX -- headers 2018-04-12 16:29:46 +02:00
zlib.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00
zstd.c btrfs: replace GPL boilerplate by SPDX -- sources 2018-04-12 16:29:51 +02:00