linux-kernel - Re: general protection fault in scsi_queue

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Date:   Tue, 13 Oct 2020 16:08:09 -0700
From:   James Bottomley <jejb@...ux.ibm.com>
To:     syzbot <syzbot+0796b72dc61f223d8cc5@...kaller.appspotmail.com>,
        hare@...e.de, hch@....de, linux-kernel@...r.kernel.org,
        linux-scsi@...r.kernel.org, martin.petersen@...cle.com,
        syzkaller-bugs@...glegroups.com
Subject: Re: general protection fault in scsi_queue_rq

On Mon, 2020-10-12 at 07:51 -0700, syzbot wrote:
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    e4fb79c7 Add linux-next specific files for 20201008
> git tree:       linux-next
> console output: 
> https://syzkaller.appspot.com/x/log.txt?x=125c9a9f900000
> kernel config:  
> https://syzkaller.appspot.com/x/.config?x=568d41fe4341ed0f
> dashboard link: 
> https://syzkaller.appspot.com/bug?extid=0796b72dc61f223d8cc5
> compiler:       gcc (GCC) 10.1.0-syz 20200507
> syz repro:      
> https://syzkaller.appspot.com/x/repro.syz?x=12582fe7900000
> C reproducer:   
> https://syzkaller.appspot.com/x/repro.c?x=124ac7d0500000
> 
> The issue was bisected to:
> 
> commit 2ceda20f0a99a74a82b78870f3b3e5fa93087a7f
> Author: Christoph Hellwig <hch@....de>
> Date:   Mon Oct 5 08:41:23 2020 +0000
> 
>     scsi: core: Move command size detection out of the fast path

#syz: test git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git scsi-misc