diff options
author | Su Yue <suy.fnst@cn.fujitsu.com> | 2017-09-27 14:34:39 +0800 |
---|---|---|
committer | David Sterba <dsterba@suse.com> | 2017-11-14 15:59:00 +0100 |
commit | 801b7260fdea9d3cbfcbeabf83635566648720d1 (patch) | |
tree | eabb596a7f05d3e34c432328dde515f37e32948c /btrfs-list.h | |
parent | c955dbd7fe67df576667d03f2cd58ff06334524e (diff) |
btrfs-progs: check: check extent_inline_ref in lowmem
Lowmem check does not skip invalid type in extent_inline_ref and then
calls btrfs_extent_inline_ref_size(type) which causes a crash.
Error:
$ btrfs check --mode=lowmem /tmp/data_small
Checking filesystem on /tmp/data_small
UUID: ee205d69-8724-4aa2-a4f5-bc8558a62169
checking extents
ERROR: extent[20971520 16384] backref type mismatch, missing bit: 2
ERROR: extent[20971520 16384] backref generation mismatch,
wanted: 7, have: 0
ERROR: extent[20971520 16384] is referred by other roots than 3
ctree.h:1754: btrfs_extent_inline_ref_size: BUG_ON `1` triggered,
value 1
btrfs(+0x543db)[0x55fabc2ab3db]
btrfs(+0x587f7)[0x55fabc2af7f7]
btrfs(+0x5fa44)[0x55fabc2b6a44]
btrfs(cmd_check+0x194a)[0x55fabc2bd717]
btrfs(main+0x88)[0x55fabc2682e0]
/usr/lib/libc.so.6(__libc_start_main+0xea)[0x7f021c3824ca]
btrfs(_start+0x2a)[0x55fabc267e7a]
[1] 5188 abort (core dumped) btrfs check --mode=lowmem /tmp/data_small
Fix it by introducing check_extent_inline_ref() to check the type.
If the checker returns a non-zero value, we should not try to check the
corrupted extent item anymore.
Suggested-by: Qu Wenruo <quwenruo.btrfs@gmx.com>
Signed-off-by: Su Yue <suy.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'btrfs-list.h')
0 files changed, 0 insertions, 0 deletions