Re: [PATCH 0/3] IRQ stack support for ARM

From: Sebastian Andrzej Siewior
Date: Thu Oct 08 2020 - 03:53:11 EST


On 2020-10-08 12:45:30 [+0530], Maninder Singh wrote:
> Observed Stack Overflow on 8KB kernel stack on ARM specially
> incase on network interrupts, which results in undeterministic behaviour.
> So there is need for per cpu dedicated IRQ stack for ARM.

You could try to look where this stack overflow is coming from. If this
is limited to softirq processing/NAPI (since you mentioned network) you
could try implementing do_softirq_own_stack().

Sebastian