Re: [syzbot] [net?] INFO: rcu detected stall in packet_release

[Vladimir Oltean]

On Tue, May 28, 2024 at 03:03:25PM +0200, Radoslaw Zielonek wrote:
> Hello,
> 
> Ah, sorry. I didn't notice that.
> The PoC has been tested by syzbot
> 	[https://syzkaller.appspot.com/bug?extid=c4c6c3dc10cc96bcf723]
> 	
> The full link:
> 	[https://lore.kernel.org/all/00000000000089427c0614c18cf4@xxxxxxxxxx/T/]
> 
> Radosław.
> 
> 

The patch, in the form you are presenting, obviously derails the phase
alignment of the new schedule when the core struggles to keep up with
the hrtimer. I am not in favor of adding any logic to taprio that
instructs it to behave out of spec.