linux-kernel - Re: [syzbot] BUG: corrupted list in rdma

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Message-ID: <CACT4Y+bnJ5M84RjUONFYMXSOpzC5UOq2DxVNoQkq6c6nYwG9Og@mail.gmail.com>
Date:   Mon, 6 Dec 2021 16:46:40 +0100
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     Jason Gunthorpe <jgg@...pe.ca>
Cc:     syzbot <syzbot+c94a3675a626f6333d74@...kaller.appspotmail.com>,
        avihaih@...dia.com, dledford@...hat.com, haakon.bugge@...cle.com,
        leon@...nel.org, linux-kernel@...r.kernel.org,
        linux-rdma@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] BUG: corrupted list in rdma_listen (2)

On Mon, 6 Dec 2021 at 16:42, Jason Gunthorpe <jgg@...pe.ca> wrote:
>
> On Sat, Dec 04, 2021 at 01:54:17AM -0800, syzbot wrote:
> > Hello,
> >
> > syzbot found the following issue on:
> >
> > HEAD commit:    bf152b0b41dc Merge tag 'for_linus' of git://git.kernel.org..
>
> ??
>
> This commit is nearly a year old?
>
> $ git describe --contains bf152b0b41dc
> v5.12-rc4~28
>
> I think this has probably been fixed since, why did a report for such
> an old kernel get sent?

Hi Jason,

Oh, that's because the arm32 kernel was broken for that period, so
syzbot tested the latest working kernel. There is a more fresh x86_64
crash available on the dashboard:
https://syzkaller.appspot.com/bug?extid=c94a3675a626f6333d74