Gao Xiang aa99a76b40 erofs: handle corrupted images whose decompressed size less than it'd be ... As Lasse pointed out, "Looking at fs/erofs/decompress.c, the return value from LZ4_decompress_safe_partial is only checked for negative value to catch errors. ... So if I understood it correctly, if there is bad data whose uncompressed size is much less than it should be, it can leave part of the output buffer untouched and expose the previous data as the file content. " Let's fix it now. Cc: Lasse Collin <lasse.collin@tukaani.org> Fixes: 7fc45dbc93 ("staging: erofs: introduce generic decompression backend") [ Gao Xiang: v5.3+, I will manually backport this to stable later. ] Link: https://lore.kernel.org/r/20200226081008.86348-3-gaoxiang25@huawei.com Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>		2020-03-03 23:40:52 +08:00
..
compress.h
data.c	erofs: fix erofs_get_meta_page locking due to a cleanup	2019-10-01 04:54:33 +08:00
decompressor.c	erofs: handle corrupted images whose decompressed size less than it'd be	2020-03-03 23:40:52 +08:00
dir.c	erofs: rename errln/infoln/debugln to erofs_{err, info, dbg}	2019-09-05 20:10:09 +02:00
erofs_fs.h	erofs: support superblock checksum	2019-11-24 11:02:41 +08:00
inode.c	erofs: always use iget5_locked	2019-09-05 20:10:09 +02:00
internal.h	erofs: convert workstn to XArray	2020-03-03 23:27:25 +08:00
Kconfig	erofs: support superblock checksum	2019-11-24 11:02:41 +08:00
Makefile
namei.c	erofs: rename errln/infoln/debugln to erofs_{err, info, dbg}	2019-09-05 20:10:09 +02:00
super.c	erofs: convert workstn to XArray	2020-03-03 23:27:25 +08:00
tagptr.h
utils.c	erofs: correct the remaining shrink objects	2020-03-03 23:39:29 +08:00
xattr.c	erofs: zero out when listxattr is called with no xattr	2019-12-04 21:15:04 +08:00
xattr.h	erofs: correct indentation of an assigned structure inside a function	2020-01-07 10:08:27 +08:00
zdata.c	erofs: convert workstn to XArray	2020-03-03 23:27:25 +08:00
zdata.h	erofs: clean up decompress queue stuffs	2019-11-24 11:02:41 +08:00
zmap.c	erofs: drop all vle annotations for runtime names	2019-11-24 11:02:41 +08:00
zpvec.h	erofs: remove all likely/unlikely annotations	2019-08-30 09:02:02 +02:00