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From: Cong Wang <xiyou.wangcong@gmail.com>
Date: Fri, 23 Feb 2018 15:27:32 -0800
Message-ID: <CAM_iQpUveA5T6-y7bguaPUok-LphJrLYxw6kNgaMorsxm4z9NA@mail.gmail.com>
Subject: Re: Kernel panic with 4.16-rc1 (and 4.16-rc2) running selftest
To: Randy Dunlap <rdunlap@infradead.org>
Cc: Khalid Aziz <khalid.aziz@oracle.com>,
        LKML <linux-kernel@vger.kernel.org>,
        "netdev@vger.kernel.org" <netdev@vger.kernel.org>
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On Fri, Feb 23, 2018 at 11:00 AM, Randy Dunlap <rdunlap@infradead.org> wrote:
> [adding netdev]
>
> On 02/23/2018 08:05 AM, Khalid Aziz wrote:
>> I am seeing a kernel panic with 4.16-rc1 and 4.16-rc2 kernels when running selftests
>> from tools/testing/selftests. Last messages from selftest before kernel panic are:
>>
...
>> Same selftest does not cause panic on 4.15. git bisect pointed to commit 6ce711f2750031d12cec91384ac5cfa0a485b60a ("idr: Make 1-based IDRs more efficient").
>> Kernel config is attached.

Looks like something horribly wrong with u32 key id idr...