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linux/fs/squashfs
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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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35 2019-05-24 17:27:11 +02:00
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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35 2019-05-24 17:27:11 +02:00
decompressor.h squashfs: migrate from ll_rw_block usage to BIO 2020-06-02 10:59:05 -07:00
dir.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35 2019-05-24 17:27:11 +02:00
export.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35 2019-05-24 17:27:11 +02:00
file_cache.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 499 2019-06-19 17:09:53 +02:00
file_direct.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 499 2019-06-19 17:09:53 +02:00
file.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35 2019-05-24 17:27:11 +02:00
fragment.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35 2019-05-24 17:27:11 +02:00
id.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35 2019-05-24 17:27:11 +02:00
inode.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35 2019-05-24 17:27:11 +02:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
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 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
namei.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35 2019-05-24 17:27:11 +02:00
page_actor.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 499 2019-06-19 17:09:53 +02:00
page_actor.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 499 2019-06-19 17:09:53 +02:00
squashfs_fs_i.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35 2019-05-24 17:27:11 +02:00
squashfs_fs_sb.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35 2019-05-24 17:27:11 +02:00
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 Merge branch 'work.mount2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-09-19 10:06:57 -07:00
symlink.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35 2019-05-24 17:27:11 +02:00
xattr_id.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35 2019-05-24 17:27:11 +02:00
xattr.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35 2019-05-24 17:27:11 +02:00
xattr.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 35 2019-05-24 17:27:11 +02:00
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