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author | Qu Wenruo <quwenruo@cn.fujitsu.com> | 2014-08-22 11:42:49 +0800 |
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committer | David Sterba <dsterba@suse.cz> | 2014-09-14 13:12:27 +0200 |
commit | cf8599c33803932b73e00a54785103030a37a4ee (patch) | |
tree | 258a44d71bff40605a25850777968707117a753c /disk-io.c | |
parent | 2527730d5d7e34b7848d8a49b47830e91adb10a1 (diff) | |
download | btrfs-progs-cf8599c33803932b73e00a54785103030a37a4ee.tar.gz |
btrfs-progs: corrupt-block: fix a delete and use bug corrupting extent tree
When corrupting extent tree, corrupt-block will iterate each child
node/leaf of a node.
However, when a node's child is leaf, btrfs_corrupt_extent_leaf() may
delete some item in the leaf, which may cause the children number of the
parent node decrease.
Before this patch, corrupt-block will read out the nritems only *ONCE*
and iterate the 'nritems' times.
When btrfs_corrupt_extent_leaf() deletes enough item, causing the
nritems of btrfs_header decreased, the last few iteration will access
non-existed node, which will cause the delete and use bug like
the following:
deleting extent record: key 40714240 168 16384
Couldn't map the block 3459802452797161472
btrfs-corrupt-block: volumes.c:1137: btrfs_num_copies: Assertion
`!(!ce)' failed.
Aborted
This patch will update the nritmes in each iteration to avoid the bug.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Diffstat (limited to 'disk-io.c')
0 files changed, 0 insertions, 0 deletions