Tetsuo Handa a7acb61428 pstore: Fix warning in pstore_kill_sb() ... commit 9c7d83ae6ba67d6c6199cce24573983db3b56332 upstream. syzbot is hitting WARN_ON(pstore_sb != sb) at pstore_kill_sb() [1], for the assumption that pstore_sb != NULL is wrong because pstore_fill_super() will not assign pstore_sb = sb when new_inode() for d_make_root() returned NULL (due to memory allocation fault injection). Since mount_single() calls pstore_kill_sb() when pstore_fill_super() failed, pstore_kill_sb() needs to be aware of such failure path. [1] https://syzkaller.appspot.com/bug?id=6abacb8da5137cb47a416f2bef95719ed60508a0 Reported-by: syzbot <syzbot+d0cf0ad6513e9a1da5df@syzkaller.appspotmail.com> Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20210214031307.57903-1-penguin-kernel@I-love.SAKURA.ne.jp Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-03-25 09:04:08 +01:00
..
blk.c	pstore/blk: Introduce "best_effort" mode	2020-05-31 19:49:01 -07:00
ftrace.c	pstore/ftrace: Provide ftrace log merging routine	2020-05-30 10:34:02 -07:00
inode.c	pstore: Fix warning in pstore_kill_sb()	2021-03-25 09:04:08 +01:00
internal.h	pstore/ftrace: Provide ftrace log merging routine	2020-05-30 10:34:02 -07:00
Kconfig	Documentation: Add details for pstore/blk	2020-05-30 10:34:03 -07:00
Makefile	pstore/blk: Introduce backend for block devices	2020-05-30 10:34:03 -07:00
platform.c	pstore: Fix typo in compression option name	2021-03-04 11:38:33 +01:00
pmsg.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282	2019-06-05 17:36:37 +02:00
ram_core.c	pstore: switch to copy_from_user()	2020-04-23 10:52:48 -04:00
ram.c	pstore/ram: Introduce max_reason and convert dump_oops	2020-05-30 10:34:03 -07:00
zone.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00