Re: [PATCH 1/1] arm/stacktrace: stop unwinding after an invalid address.

[Russell King - ARM Linux]

On Tue, Oct 24, 2017 at 05:16:42PM +0530, Maninder Singh wrote:
> This patch stops unwinding backtrace in case of below 2 cases.
> 
> (Issue observed while porting stackdepot on ARM, duplicate
> entries created in stackdepot
> reference patch for workaround in stackdepot:-
> https://lkml.org/lkml/2017/10/11/353
> ).
> 
> 1. If address belongs to irq/exception code, ignore it.
> save_stack+0x40/0xec
>  __set_page_owner+0x2c/0x64
> ....
> ....
>  __handle_domain_irq+0x9c/0x130
>  gic_handle_irq+0x40/0x80
>  __irq_usr+0x4c/0x60
>  0xb6507818
> ^^^^^^^

However, we _do_ want to trace through an IRQ taken in SVC mode, but you
completely remove all that code.  So, not taking this patch, sorry.

-- 
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