Subject: [Bug 209029] kernel 5.9-rc2 fails to boot on a PowerMac G5 11,2 - BUG: Kernel NULL pointer dereference on read at 0x00000020

From: [email-masked]
Date: Wed, 02 Sep 2020 10:48:51 +0000

https://bugzilla.kernel.org/show_bug.cgi?id=209029

--- Comment #4 from Erhard F. ([email-masked]) ---
(In reply to Christophe Leroy from comment #3)
> Did you try without CONFIG_DEBUG_VM_PGTABLE ?
Without CONFIG_DEBUG_VM_PGTABLE the G5 boots fine. Thanks!

> If you want CONFIG_DEBUG_VM_PGTABLE, the following series aims at fixing it
> for PPC64:
> https://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=197961
Did not check the series as current ozlabs patches indicate that the
CONFIG_DEBUG_VM_PGTABLE option is removed for the time being.

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