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Subject: Re: [FSL P50x0] Xorg always restarts again and again after the the
 PowerPC updates 5.13-1
From: Christian Zigotzky <chzigotzky@xenosoft.de>
To: Christophe Leroy <christophe.leroy@csgroup.eu>,
 Michael Ellerman <mpe@ellerman.id.au>
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Cc: Darren Stevens <darren@stevens-zone.net>,
 linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
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Am 04.05.21 um 13:02 schrieb Christian Zigotzky:
> Am 04.05.21 um 12:07 schrieb Christian Zigotzky:
>> Am 04.05.21 um 11:49 schrieb Christophe Leroy:
>>>
>>>
>>> Le 04/05/2021 à 11:46, Christian Zigotzky a écrit :
>>>> Am 04.05.21 um 11:11 schrieb Christophe Leroy:
>>>>>
>>>>>
>>>>> Le 04/05/2021 à 11:09, Christian Zigotzky a écrit :
>>>>>> Am 04.05.21 um 10:58 schrieb Christophe Leroy:
>>>>>>>
>>>>>>>
>>>>>>> Le 04/05/2021 à 10:29, Christian Zigotzky a écrit :
>>>>>>>> On 04 May 2021 at 09:47am, Christophe Leroy wrote:
>>>>>>>>> Hi
>>>>>>>>>
>>>>>>>>> Le 04/05/2021 à 09:21, Christian Zigotzky a écrit :
>>>>>>>>>> Hi Christophe,
>>>>>>>>>>
>>>>>>>>>> Thanks for your answer but I think I don't know how it works 
>>>>>>>>>> with the cherry-pick.
>>>>>>>>>>
>>>>>>>>>> $ git bisect start
>>>>>>>>>
>>>>>>>>> As you suspect the problem to be specific to powerpc, I can do
>>>>>>>>>
>>>>>>>>> git bisect start -- arch/powerpc
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> $ git bisect good 68a32ba14177d4a21c4a9a941cf1d7aea86d436f
>>>>>>>>>> $ git bisect bad c70a4be130de333ea079c59da41cc959712bb01c
>>>>>>>>>
>>>>>>>>> You said that powerpc-5.13-1 is bad so you can narrow the 
>>>>>>>>> search I think:
>>>>>>>>>
>>>>>>>>> git bisect bad powerpc-5.13-1
>>>>>>>>> git bisect good 887f3ceb51cd3~
>>>>>>>> I tried it but without any success.
>>>>>>>>
>>>>>>>> git bisect bad powerpc-5.13-1
>>>>>>>>
>>>>>>>> Output:
>>>>>>>> fatal: Needed a single revision
>>>>>>>> Bad rev input: powerpc-5.13-1
>>>>>>>
>>>>>>> I don't understand, on my side it works. Maybe a difference 
>>>>>>> between your version of git and mine.
>>>>>>>
>>>>>>> In that case, just use the SHA corresponding to the merge:
>>>>>>>
>>>>>>> git bisect bad c70a4be130de333ea079c59da41cc959712bb01c
>>>>>>>
>>>>>>> Christophe
>>>>>> Do you use a BookE machine?
>>>>>
>>>>> No I don't unfortunately, and I have tried booting in QEMU a 
>>>>> kernel built with your config, but it freezes before any output.
>>>> You can use my kernels and distributions.
>>>>
>>>
>>> Ok, I'll see if I can do something with them.
>>>
>>> In the meantime, have you been able to bisect ?
>>>
>>> Thanks
>>> Christophe
>> I am bisecting currently.
>>
>> $ git bisect start -- arch/powerpc
>> $ git bisect good 887f3ceb51cd3~
>> $ git bisect bad c70a4be130de333ea079c59da41cc959712bb01c
> OK, there is another issue after the second bisecting step. The boot 
> stops after loading the dtb and uImage file. I can't solve 2 issues 
> with bisecting at the same time.
Xorg restarts again and again.

Here are some interesting error messages:

May 04 15:24:53 dc1.a-eon.tld kernel: lxsession[7255]: segfault (11) at 
800000 nip ff6a770 lr ff6a760 code 1 in 
libglib-2.0.so.0.4800.2[feaf000+11f000]
May 04 15:24:53 dc1.a-eon.tld kernel: lxsession[7255]: code: 4bfc9401 
3920ffff 91210054 8061005c 2f830000 419c0014 38800000 4bfc93e5
May 04 15:24:53 dc1.a-eon.tld kernel: lxsession[7255]: code: 3920ffff 
9121005c 2f8f0000 419e0008 <93ef0000> 418e000c 81210040 913b0000

May 04 15:37:40 mintppc.a-eon.tld kernel: packagekitd[4290]: segfault 
(11) at 8 nip 92dbc8 lr 92dae8 code 1 in packagekitd[920000+51000]
May 04 15:37:40 mintppc.a-eon.tld kernel: packagekitd[4290]: code: 
38800080 3be001f4 4cc63182 4802c8ad 4bffff64 60000000 81210018 80be8048
May 04 15:37:40 mintppc.a-eon.tld kernel: packagekitd[4290]: code: 
7fa6eb78 38800010 807e801c 3be0ffff <80e90008> 4cc63182 4802c881 4bffff38