Re: [syzbot] [sound?] possible deadlock in __snd_pcm_lib_xfer (2)

Sebastian Andrzej Siewior
2025-09-03T14:59:08Z

On 2025-08-30 14:56:37 [+0800], Hillf Danton wrote:
> > syz.0.46/6843 is trying to acquire lock:
> > ffff8880b8823d90 ((softirq_ctrl.lock)){+.+.}-{3:3}, at: spin_lock include/linux/spinlock_rt.h:44 [inline]
> > ffff8880b8823d90 ((softirq_ctrl.lock)){+.+.}-{3:3}, at: __local_bh_disable_ip+0x264/0x400 kernel/softirq.c:168
> >
> Given softirq_ctrl is percpu, this report is false positive.

No. This can happen on a single CPU.

Sebastian