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Subject: Re: Kernel bug in 5.7 for PPC32 on PowerBook G4 - bisected to commit
 697ece7
To: Larry Finger <Larry.Finger@lwfinger.net>
References: <2c361d8e-5e2a-cdd9-da8e-aa49a4f93cfd@lwfinger.net>
From: Christophe Leroy <christophe.leroy@csgroup.eu>
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Date: Sat, 23 May 2020 19:30:20 +0200
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Hi Larry,

Le 23/05/2020 à 19:24, Larry Finger a écrit :
> Hi Christophe,
> 
> Although kernel 5.7.0-rc2 appeared to boot cleanly, it failed on my G4 
> when I tried to generate a new kernel. The following BUG message is logged:
> 

[...]

> 
> This problem was bisected to commit 697ece7 ("powerpc/32s: reorder Linux 
> PTE bits to better match Hash PTE bits").

Being reversed in new -rc , see 
https://patchwork.ozlabs.org/project/linuxppc-dev/patch/87sgfsf4hs.fsf@mpe.ellerman.id.au/

> 
> If I had done more rigorous tests earlier, I would have found the bug 
> with more time to fix it before release of 5.7, but every other problem 
> I have found happened at boot, not when the machine had to swap.
> 
> Thanks,
> 
> Larry

Christophe