linux

iv/linux

History

Tetsuo Handa 9c7d83ae6b pstore: Fix warning in pstore_kill_sb()

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

2021-02-23 09:27:20 -08:00

blk.c

for-5.11/block-2020-12-14

2020-12-16 12:57:51 -08:00

ftrace.c

ftrace: Have the callbacks receive a struct ftrace_regs instead of pt_regs

2020-11-13 12:14:55 -05:00

inode.c

pstore: Fix warning in pstore_kill_sb()

2021-02-23 09:27:20 -08:00

internal.h

pstore: Move kmsg_bytes default into Kconfig