linux-kernel - Re: [syzbot] general protection fault in do_blk_trace

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Message-ID: <20210825075512.GA29930@lst.de>
Date:   Wed, 25 Aug 2021 09:55:12 +0200
From:   Christoph Hellwig <hch@....de>
To:     syzbot <syzbot+f74aa89114a236643919@...kaller.appspotmail.com>
Cc:     Kai.Makisara@...umbus.fi, axboe@...nel.dk, davem@...emloft.net,
        hch@....de, jejb@...ux.ibm.com, johan.hedberg@...il.com,
        kuba@...nel.org, linux-block@...r.kernel.org,
        linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-scsi@...r.kernel.org, luiz.dentz@...il.com,
        marcel@...tmann.org, martin.petersen@...cle.com, mingo@...hat.com,
        netdev@...r.kernel.org, rostedt@...dmis.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] general protection fault in do_blk_trace_setup

On Tue, Aug 24, 2021 at 11:19:21AM -0700, syzbot wrote:
> Author: Christoph Hellwig <hch@....de>
> Date:   Mon Aug 16 13:19:03 2021 +0000
> 
>     st: do not allocate a gendisk

That's very obviously a bisection one-off, the culprit was the sg
conversion.  I've send a fix.