linux-kernel - Re: BUG: spinlock bad magic (2)

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Message-ID: <CACT4Y+Zoat=3j7B--D=pLK=SU0zhNA2yw0O0cEwj_p6vSBfM7g@mail.gmail.com>
Date:   Mon, 18 Dec 2017 18:01:30 +0100
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     Santosh Shilimkar <santosh.shilimkar@...cle.com>
Cc:     syzbot 
        <bot+d3f5d339869eb8cd834d2c9f0a88bf4f05c29781@...kaller.appspotmail.com>,
        David Miller <davem@...emloft.net>,
        LKML <linux-kernel@...r.kernel.org>, linux-rdma@...r.kernel.org,
        netdev <netdev@...r.kernel.org>, rds-devel@....oracle.com,
        syzkaller-bugs@...glegroups.com
Subject: Re: BUG: spinlock bad magic (2)

On Mon, Dec 18, 2017 at 5:46 PM, Santosh Shilimkar
<santosh.shilimkar@...cle.com> wrote:
> On 12/18/2017 4:36 AM, syzbot wrote:
>>
>> Hello,
>>
>> syzkaller hit the following crash on
>> 6084b576dca2e898f5c101baef151f7bfdbb606d
>> git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/master
>> compiler: gcc (GCC) 7.1.1 20170620
>> .config is attached
>> Raw console output is attached.
>>
>> Unfortunately, I don't have any reproducer for this bug yet.
>>
> [...]
>
>> BUG: unable to handle kernel NULL pointer dereference at 0000000000000028
>> IP: rds_send_xmit+0x80/0x930 net/rds/send.c:186
>
>
> This one seems to be same bug as reported as below.
>
> BUG: unable to handle kernel NULL pointer dereference in rds_send_xmit

Hi Santosh,

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