| commit | bfc4ccb1584129d3ef051f8bf6155835374f132f | |
| author | Gao Xiang <gaoxiang25@huawei.com> | |
| Wed, 21 Aug 2019 03:09:08 +0000 (21 11:09 +0800) | ||
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
| Wed, 21 Aug 2019 12:48:06 +0000 (21 05:48 -0700) | ||
| tree | ec99121b1800ae08ffab9e470796a187b832b6c7 | treesnapshot (tar.gz zip) |
| parent | 2cb05d8788f77ed14b99a0fbb2748346071f3a33 | commitdiff |
staging: erofs: avoid loop in submit chains
As reported by erofs-utils fuzzer, 2 conditions
can happen in corrupted images, which can cause
unexpected behaviors.
- access the same pcluster one more time;
- access the tail end pcluster again, e.g.
_ access again (will trigger tail merging)
|
1 2 3 1 2 -> 1 2 3 1
|_ tail end of the chain \___/ (unexpected behavior)
Let's detect and avoid them now.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Link: https://lore.kernel.org/r/20190821030908.40282-1-gaoxiang25@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
As reported by erofs-utils fuzzer, 2 conditions
can happen in corrupted images, which can cause
unexpected behaviors.
- access the same pcluster one more time;
- access the tail end pcluster again, e.g.
_ access again (will trigger tail merging)
|
1 2 3 1 2 -> 1 2 3 1
|_ tail end of the chain \___/ (unexpected behavior)
Let's detect and avoid them now.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Link: https://lore.kernel.org/r/20190821030908.40282-1-gaoxiang25@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| drivers/staging/erofs/zdata.c | diffblobblamehistory |