On 03/03/23 16:51, Greg Kroah-Hartman wrote: > On Thu, Mar 02, 2023 at 12:25:02AM +0800, wenyang.linux@xxxxxxxxxxx wrote: >> From: Valentin Schneider <vschneid@xxxxxxxxxx> >> >> commit 811d581194f7412eda97acc03d17fc77824b561f upstream. > > No it is not :( > > Also, why is this needed for 5.10.y? PREEMPT_RT is not in 5.10, right? > The mutex_unlock() might end up waking a waiter, and wake_up_process() really isn't NMI safe (regardless of PREEMPT_RT - the PREEMPT_RT warning just highlighted the issue). > thanks, > > greg k-h