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Re: linux-next: Tree for Mar 14 (mips qemu failure bisected)

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On 16/03/2016 13:22, Guenter Roeck wrote:
> On Tue, Mar 15, 2016 at 05:17:13PM -0700, Guenter Roeck wrote:
>> On Tue, Mar 15, 2016 at 09:55:06PM +0000, Qais Yousef wrote:
>>> Hi Guenter,
>>>
> [ ... ]
>>>>> Qemu test results:
>>>>> 	total: 96 pass: 69 fail: 27
>>>>> Failed tests:
>>>> [ ... ]
>>>>> 	mips:mips_malta_smp_defconfig
>>>> I bisected this failure to commit bb11cff327e54 ("MIPS: Make smp CMP, CPS and MT
>>>> use the new generic IPI functions". Bisect log is attached.
>>> Thanks for bisecting this. I tested this on a real Malta system but not
>>> qemu. I'll try to reproduce.
>>>
>> I run the tests with only a single CPU core enabled. Maybe that causes
>> problems with your code ?
>>
> I ran another qemu test (this time on mainline) with "-smp 2", but the only
> difference is that the image now gets stuck even earlier.
>
> Also, I ran another set of bisects, this time with both mips and mips64
> on mainline (after your patch landed), with the same results.
>
> Guenter
>

OK thanks for the info. The offending commit just enables using quite a 
few of the newly added code before that. So the problem could be in any 
of the newly added code.

Unfortunately I can only look at this during my limited time in the 
evening and I have to setup my system to compile and run this, so I 
won't be able to get to the bottom of this as fast as I'd like to.

Qais

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Thread

linux-next: Tree for Mar 14 Stephen Rothwell <sfr@canb.auug.org.au> - 2016-03-14 07:50 +0100
  Re: linux-next: Tree for Mar 14 Guenter Roeck <linux@roeck-us.net> - 2016-03-14 15:40 +0100
    Re: linux-next: Tree for Mar 14 James Morse <james.morse@arm.com> - 2016-03-14 18:00 +0100
      Re: linux-next: Tree for Mar 14 Guenter Roeck <linux@roeck-us.net> - 2016-03-14 20:20 +0100
    Re: linux-next: Tree for Mar 14 Michael Ellerman <mpe@ellerman.id.au> - 2016-03-15 01:00 +0100
      Re: linux-next: Tree for Mar 14 Guenter Roeck <linux@roeck-us.net> - 2016-03-15 03:40 +0100
    Re: linux-next: Tree for Mar 14 (mips qemu failure bisected) Guenter Roeck <linux@roeck-us.net> - 2016-03-15 06:30 +0100
      Re: linux-next: Tree for Mar 14 (mips qemu failure bisected) Qais Yousef <qsyousef@gmail.com> - 2016-03-15 23:00 +0100
        Re: linux-next: Tree for Mar 14 (mips qemu failure bisected) Guenter Roeck <linux@roeck-us.net> - 2016-03-16 01:20 +0100
          Re: linux-next: Tree for Mar 14 (mips qemu failure bisected) Guenter Roeck <linux@roeck-us.net> - 2016-03-16 14:30 +0100
            Re: linux-next: Tree for Mar 14 (mips qemu failure bisected) Qais Yousef <qsyousef@gmail.com> - 2016-03-16 21:30 +0100
              Re: linux-next: Tree for Mar 14 (mips qemu failure bisected) Qais Yousef <qsyousef@gmail.com> - 2016-03-16 23:20 +0100
                Re: linux-next: Tree for Mar 14 (mips qemu failure bisected) Guenter Roeck <linux@roeck-us.net> - 2016-03-17 03:20 +0100
                Re: linux-next: Tree for Mar 14 (mips qemu failure bisected) Guenter Roeck <linux@roeck-us.net> - 2016-03-17 03:40 +0100
                Re: linux-next: Tree for Mar 14 (mips qemu failure bisected) Guenter Roeck <linux@roeck-us.net> - 2016-03-17 13:50 +0100
  Re: linux-next: Tree for Mar 14 Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2016-03-15 01:30 +0100
    Re: linux-next: Tree for Mar 14 Wolfram Sang <wsa@the-dreams.de> - 2016-03-15 07:50 +0100
      Re: linux-next: Tree for Mar 14 Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2016-03-15 08:00 +0100

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