Re: WARNING: ODEBUG bug in process_one_req

From: Dmitry Vyukov
Date: Thu Mar 22 2018 - 09:37:24 EST


On Thu, Mar 22, 2018 at 2:20 PM, Leon Romanovsky <leonro@xxxxxxxxxxxx> wrote:
> On Thu, Mar 22, 2018 at 02:10:21PM +0100, Dmitry Vyukov wrote:
>> This bug is actively happening several times per day, if such bug is
>> closed syzbot will open another bug on the next crash.
>> This bug has a reproducer, why do you think it is invalid?
>
> I tried to reproduce it on latest rdma-next and failed, so wanted to
> start from clean page and see if it is still relevant.

Ah, I see.
You can now see the current status on dashboard:
https://syzkaller.appspot.com/bug?id=d4ac7bfeafac8a3d6d06123e078462ac765415e7
Yes, it still happens.

syzbot has already reported another incarnation of this bug, you can
see the link to dashboard in the email:
https://syzkaller.appspot.com/bug?extid=b8d5eb964e412cfd2678
and it contains a link to the first version with reproducer.

> Does it still reproduce on latest rdma-next?

syzbot does not test rdma-next.

But can you reproduce it on upstream tree where syzbot hits it? Just
to make sure, you have ODEBUG enabled, right?