linux-kernel - Re: [cdrom_check_status] BUG: unable to handle kernel NULL pointer dereference at 000001c0

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Date:   Tue, 7 Nov 2017 21:06:26 +0800
From:   Fengguang Wu <fengguang.wu@...el.com>
To:     Borislav Petkov <bp@...en8.de>
Cc:     linux-ide@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Jens Axboe <axboe@...nel.dk>,
        Bart Van Assche <bart.vanassche@...disk.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [cdrom_check_status] BUG: unable to handle kernel NULL pointer
 dereference at 000001c0

Hi Borislav,

On Tue, Nov 07, 2017 at 11:43:36AM +0100, Borislav Petkov wrote:
>On Tue, Nov 07, 2017 at 06:25:38PM +0800, Fengguang Wu wrote:
>> Hello,
>>
>> FYI this happens in v4.14-rc8 -- it's not necessarily a new bug.
>
>I can't repro here with your config. Can you send me your qemu command
>line too pls?

It turns out rather hard to reproduce -- that's the only occurrence in
100 boots. Perhaps we'll have to give up on this.

Fengguang