Re: [PATCH 2/2] rcu: Fix lockup when RCU reader used while IRQ exiting

[Frederic Weisbecker]

Le Thu, Jun 12, 2025 at 11:06:07AM +0800, Xiongfeng Wang a écrit :
> +cc (Qi, my colleague who helps testing the modification)
> 
> On 2025/6/10 20:23, Frederic Weisbecker wrote:
> > Le Mon, Jun 09, 2025 at 02:01:24PM -0400, Joel Fernandes a écrit :
> >> During rcu_read_unlock_special(), if this happens during irq_exit(), we
> 
> ...skipped...
> 
> We have tested the below modification without the modification written by Joel
> using the previous syzkaller benchmark. The kernel still panic.
> The dmesg log is attached.

Yes, it's a cleanup that doesn't include Joel's change yet. So this is
expected.

Thanks.

-- 
Frederic Weisbecker
SUSE Labs