[Bug 216041] Stack overflow at boot (do_IRQ: stack overflow: 1984) on a PowerMac G4 DP, KASAN debug build

[bugzilla-daemon at kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=216041

--- Comment #6 from Erhard F. (erhard_f at mailbox.org) ---
(In reply to Christophe Leroy from comment #3)
> I can't see any issue, other than your CONFIG_THREAD_SHIFT is set to 13.
> 
> It should be 14 by default, see
> https://elixir.bootlin.com/linux/v5.18/source/arch/powerpc/Kconfig#L769
> 
> Is there any reason why you set it to 13 ?
I was not aware setting it to a custom value. I thought 13 is the default on
ppc32 which gets overriden to 14 if I select KASAN?

But I'll make sure I'll double check this on future builds. Only advanced
option I did set is CONFIG_LOWMEM_SIZE=0x28000000 (see bug #215389).

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