linux/fs/squashfs
Phillip Lougher 2910c59fd0 squashfs: fix length field overlap check in metadata reading
This is a regression introduced by the "migrate from ll_rw_block usage
to BIO" patch.

Squashfs packs structures on byte boundaries, and due to that the length
field (of the metadata block) may not be fully in the current block.
The new code rewrote and introduced a faulty check for that edge case.

Fixes: 93e72b3c61 ("squashfs: migrate from ll_rw_block usage to BIO")
Reported-by: Bernd Amend <bernd.amend@gmail.com>
Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Adrien Schildknecht <adrien+dev@schischi.me>
Cc: Guenter Roeck <groeck@chromium.org>
Cc: Daniel Rosenberg <drosen@google.com>
Link: http://lkml.kernel.org/r/20200717195536.16069-1-phillip@squashfs.org.uk
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-07-24 12:42:41 -07:00
..
block.c squashfs: fix length field overlap check in metadata reading 2020-07-24 12:42:41 -07:00
cache.c
decompressor_multi_percpu.c Merge branch 'akpm' (patches from Andrew) 2020-06-02 12:21:36 -07:00
decompressor_multi.c squashfs: migrate from ll_rw_block usage to BIO 2020-06-02 10:59:05 -07:00
decompressor_single.c squashfs: migrate from ll_rw_block usage to BIO 2020-06-02 10:59:05 -07:00
decompressor.c
decompressor.h squashfs: migrate from ll_rw_block usage to BIO 2020-06-02 10:59:05 -07:00
dir.c
export.c
file_cache.c
file_direct.c
file.c
fragment.c
id.c
inode.c
Kconfig
lz4_wrapper.c squashfs: migrate from ll_rw_block usage to BIO 2020-06-02 10:59:05 -07:00
lzo_wrapper.c squashfs: migrate from ll_rw_block usage to BIO 2020-06-02 10:59:05 -07:00
Makefile
namei.c
page_actor.c
page_actor.h
squashfs_fs_i.h
squashfs_fs_sb.h
squashfs_fs.h Squashfs: Replace zero-length array with flexible-array 2020-06-15 23:08:32 -05:00
squashfs.h squashfs: migrate from ll_rw_block usage to BIO 2020-06-02 10:59:05 -07:00
super.c
symlink.c
xattr_id.c
xattr.c
xattr.h
xz_wrapper.c squashfs: migrate from ll_rw_block usage to BIO 2020-06-02 10:59:05 -07:00
zlib_wrapper.c squashfs: migrate from ll_rw_block usage to BIO 2020-06-02 10:59:05 -07:00
zstd_wrapper.c squashfs: migrate from ll_rw_block usage to BIO 2020-06-02 10:59:05 -07:00