]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
fat: validate ->i_start before using
authorOGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Wed, 22 Aug 2018 04:59:44 +0000 (21:59 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 22 Aug 2018 17:52:50 +0000 (10:52 -0700)
commit0afa9626667c3659ef8bd82d42a11e39fedf235c
tree9b5c96147d7eb18dc6d6b148e2f02c76b8ef9053
parentf663b5b38fffeb31841f8bfaf0ef87a445b0ffee
fat: validate ->i_start before using

On corrupted FATfs may have invalid ->i_start.  To handle it, this checks
->i_start before using, and return proper error code.

Link: http://lkml.kernel.org/r/87o9f8y1t5.fsf_-_@mail.parknet.co.jp
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Reported-by: Anatoly Trosinenko <anatoly.trosinenko@gmail.com>
Tested-by: Anatoly Trosinenko <anatoly.trosinenko@gmail.com>
Cc: Alan Cox <gnomes@lxorguk.ukuu.org.uk>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fs/fat/cache.c
fs/fat/fat.h
fs/fat/fatent.c