btrfs: validate type when reading a chunk
commit50962a7b4877f26d1f3f49cd77ad1814a9e81bac
authorGu Jinxiang <gujx@cn.fujitsu.com>
Wed, 4 Jul 2018 10:16:39 +0000 (4 18:16 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 16 Jan 2019 21:16:09 +0000 (16 22:16 +0100)
tree4b04d7cc5bb061ac372cb5b76fa02877e766ea34
parent42d263820480ab1f7eba54590f2c7283b3428723
btrfs: validate type when reading a chunk

commit 315409b0098fb2651d86553f0436b70502b29bb2 upstream.

Reported in https://bugzilla.kernel.org/show_bug.cgi?id=199839, with an
image that has an invalid chunk type but does not return an error.

Add chunk type check in btrfs_check_chunk_valid, to detect the wrong
type combinations.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=199839
Reported-by: Xu Wen <wen.xu@gatech.edu>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Gu Jinxiang <gujx@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
[bwh: Backported to 4.4: Use root->fs_info instead of fs_info]
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fs/btrfs/volumes.c