From: Laurentiu Tudor <laurentiu.tudor@nxp.com>
To: linuxppc-dev@lists.ozlabs.org
Subject: Re: ppc32 panic on boot on linux-next
Date: Tue, 10 Mar 2020 13:06:00 +0200 [thread overview]
Message-ID: <fdea7934-639f-e183-bec0-ed31c4a929d8@nxp.com> (raw)
In-Reply-To: <875zfcked5.fsf@mpe.ellerman.id.au>
Hello,
On 10.03.2020 06:44, Michael Ellerman wrote:
> Christophe Leroy <christophe.leroy@c-s.fr> writes:
>> Le 07/03/2020 à 09:42, Christophe Leroy a écrit :
>>> Le 06/03/2020 à 20:05, Nick Desaulniers a écrit :
>>>> As a heads up, our CI went red last night, seems like a panic from
>>>> free_initmem? Is this a known issue?
>>>
>>> Thanks for the heads up.
>>>
>>> No such issue with either 8xx or book3s/32.
>>>
>>> I've now been able to reproduce it with bamboo QEMU.
>>>
>>> Reverting 2efc7c085f05 makes it disappear. I'll investigate.
>>>
>>
>> Ok, I found the problem. virt_to_kpte() lacks a NULL pmd check. I'll
>> send a patch for that.
>>
>> However, if there is no PMD I guess this area is mapped through some
>> kind of block mapping. Therefore it should bail out of the function through:
>>
>> if (v_block_mapped(address))
>> return 0;
>>
>>
>> Can someone who knows BOOKE investigate that ?
>
> Not sure we have anyone left?
>
> cheers
>
With latest linux-next, PPC32 Book-E boots to prompt:
https://paste.debian.net/1134272/
---
Best Regards, Laurentiu
prev parent reply other threads:[~2020-03-10 11:12 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-06 19:05 ppc32 panic on boot on linux-next Nick Desaulniers
2020-03-07 8:42 ` Christophe Leroy
2020-03-07 9:00 ` Christophe Leroy
2020-03-10 4:44 ` Michael Ellerman
2020-03-10 11:06 ` Laurentiu Tudor [this message]
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