kernel.git/fs/squashfs/file.c, branch linux-3.16.y

squashfs: be more careful about metadata corruption

2018-11-20T18:05:52Z

commit 01cfb7937a9af2abb1136c7e89fbf3fd92952956 upstream. Anatoly Trosinenko reports that a corrupted squashfs image can cause a kernel oops. It turns out that squashfs can end up being confused about negative fragment lengths. The regular squashfs_read_data() does check for negative lengths, but squashfs_read_metadata() did not, and the fragment size code just blindly trusted the on-disk value. Fix both the fragment parsing and the metadata reading code. Reported-by: Anatoly Trosinenko Cc: Al Viro Cc: Phillip Lougher Signed-off-by: Linus Torvalds Signed-off-by: Ben Hutchings

Squashfs: Restructure squashfs_readpage()

2013-11-20T03:59:07Z

Restructure squashfs_readpage() splitting it into separate functions for datablocks, fragments and sparse blocks. Move the memcpying (from squashfs cache entry) implementation of squashfs_readpage_block into file_cache.c This allows different implementations to be supported. Signed-off-by: Phillip Lougher Reviewed-by: Minchan Kim

squashfs: remove the second argument of k[un]map_atomic()

2012-03-20T13:48:25Z

Signed-off-by: Cong Wang

Squashfs: update email address

2011-05-26T09:49:11Z

My existing email address may stop working in a month or two, so update email to one that will continue working. Signed-off-by: Phillip Lougher

Squashfs: factor out remaining zlib dependencies into separate wrapper file

2010-01-20T21:47:47Z

Move zlib buffer init/destroy code into separate wrapper file. Also make zlib z_stream field a void * removing the need to include zlib.h for most files. Signed-off-by: Phillip Lougher

Squashfs: regular file operations

2009-01-05T08:46:24Z

Signed-off-by: Phillip Lougher