diff options
author | Lu Fengqi <lufq.fnst@cn.fujitsu.com> | 2017-05-02 15:36:09 +0800 |
---|---|---|
committer | David Sterba <dsterba@suse.com> | 2017-05-02 16:29:38 +0200 |
commit | 528ba342acfcce93457708ee5bdec98dee52645a (patch) | |
tree | 507344a62723606e2398099a83731494227b8ad8 /root-tree.c | |
parent | f80b1f1db66216aeca06be03d0269b2e2946974b (diff) |
btrfs-progs: tests: Fix fuzz-test for bko-161821.raw.txt
Fuzzed image bko-161821.raw causes btrfs check to get segmentation fault.
The function check_owner_ref attempts to access a non-exist quota tree
when dealing with extent_item [4198400 4096] in the corrupted filesystem.
The function btrfs_new_fs_info always allocates memory for
fs_info->quota_root regardless of whether quota_tree exists or not.
Additionally, the function btrfs_read_fs_root will directly return
fs_info->quota_root if location->objectid == BTRFS_QUOTA_TREE_OBJECTID.
This patch does the following things:
1. Do extra check and return ENOENT if quota tree does not exist in the
function btrfs_read_fs_root.
2. Free useless fs_info->quota_root in the function btrfs_setup_all_roots
to reduce confusion.
3. free_extent_buffer even if check_child_node failed in the function
walk_down_tree.
Signed-off-by: Lu Fengqi <lufq.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'root-tree.c')
0 files changed, 0 insertions, 0 deletions