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Phillip Lougher a3f94cb99a Squashfs: Compute expected length from inode size rather than block length 
Previously in squashfs_readpage() when copying data into the page
cache, it used the length of the datablock read from the filesystem
(after decompression).  However, if the filesystem has been corrupted
this data block may be short, which will leave pages unfilled.

The fix for this is to compute the expected number of bytes to copy
from the inode size, and use this to detect if the block is short.

Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
Tested-by: Willy Tarreau <w@1wt.eu>
Cc: Анатолий Тросиненко <anatoly.trosinenko@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2018-08-02 09:34:02 -07:00
..
Kconfig squashfs: Add zstd support 2017-09-08 19:33:25 -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
block.c squashfs: more metadata hardening 2018-07-30 17:29:17 -07:00
cache.c squashfs: be more careful about metadata corruption 2018-07-29 12:44:46 -07:00
decompressor.c squashfs: Add zstd support 2017-09-08 19:33:25 -07:00
decompressor.h squashfs: Add zstd support 2017-09-08 19:33:25 -07:00
decompressor_multi.c Squashfs: Check stream is not NULL in decompressor_multi.c 2013-11-20 03:59:20 +00:00
decompressor_multi_percpu.c Squashfs: Generalise paging handling in the decompressors 2013-11-20 03:59:01 +00:00
decompressor_single.c Squashfs: Generalise paging handling in the decompressors 2013-11-20 03:59:01 +00:00
dir.c romfs, squashfs: switch to ->iterate_shared() 2016-05-09 11:41:15 -04:00
export.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
file.c Squashfs: Compute expected length from inode size rather than block length 2018-08-02 09:34:02 -07:00
file_cache.c Squashfs: Compute expected length from inode size rather than block length 2018-08-02 09:34:02 -07:00
file_direct.c Squashfs: Compute expected length from inode size rather than block length 2018-08-02 09:34:02 -07:00
fragment.c squashfs: more metadata hardening 2018-08-02 09:32:23 -07:00
id.c
…
inode.c vfs: Remove {get,set,remove}xattr inode operations 2016-10-07 21:48:36 -04:00
lz4_wrapper.c fs/pstore: fs/squashfs: change usage of LZ4 to work with new LZ4 version 2017-02-24 17:46:57 -08:00
lzo_wrapper.c mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
namei.c vfs: Remove {get,set,remove}xattr inode operations 2016-10-07 21:48:36 -04:00
page_actor.c mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
page_actor.h mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
squashfs.h Squashfs: Compute expected length from inode size rather than block length 2018-08-02 09:34:02 -07:00
squashfs_fs.h squashfs: be more careful about metadata corruption 2018-07-29 12:44:46 -07:00
squashfs_fs_i.h fs: cleanup slight list_entry abuse 2015-06-23 18:01:59 -04:00
squashfs_fs_sb.h squashfs: more metadata hardening 2018-08-02 09:32:23 -07:00
super.c squashfs: more metadata hardening 2018-08-02 09:32:23 -07:00
symlink.c vfs: remove ".readlink = generic_readlink" assignments 2016-12-09 16:45:04 +01:00
xattr.c xattr_handler: pass dentry and inode as separate arguments of ->get() 2016-04-10 20:48:24 -04:00
xattr.h vfs: Remove {get,set,remove}xattr inode operations 2016-10-07 21:48:36 -04:00
xattr_id.c
…
xz_wrapper.c mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
zlib_wrapper.c mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
zstd_wrapper.c squashfs: Add zstd support 2017-09-08 19:33:25 -07:00