On 2026-06-01 13:10:05 [+1000], Matthieu Baerts (NGI0) wrote: > sk_stop_timer_sync() calls del_timer_sync(), which spin-waits for the There is no del_timer_sync()
> timer callback to complete on non-RT kernels. But on PREEMPT_RT, it can > sleep. Sleeping inside an RCU read-side critical section might trigger a > lockdep splat. It can not sleep. timer_delete_sync() does not sleep. It can block on spinlock_t and schedule but this is okay within a RCU read section. Do you have a report for this? Sebastian
