Re: kernel: signal: NULL ptr deref when killing process

From: Sasha Levin
Date: Thu Aug 21 2014 - 11:21:31 EST


On 08/20/2014 10:12 AM, Oleg Nesterov wrote:
> On 08/20, Sasha Levin wrote:
>> >
>> > Hi all,
>> >
>> > While fuzzing with trinity inside a KVM tools guest running the latest -next
>> > kernel, I've stumbled on the following spew:
> Thanks...
>
> looks like, kill_ok_by_cred()->__task_cred(t) returns NULL at first glance.
> perhaps you can show the result of "make kernel/signal.s" to be sure? Or at
> least the full "objdump -d kernel/signal.o".

Attached.

Thanks,
Sasha

Attachment: signal.s.xz
Description: application/xz