On Sun, Dec 1, 2024 at 5:31 AM Paul E. McKenney <paulmck@xxxxxxxxxx> wrote: > Does booting with the "rcupdate.rcu_normal=1" kernel boot parameter > also suppress the problem? setting rcupdate.rcu_normal=1 also suppresses the problem. I guess this makes RCU code not do synchronize_rcu_normal() in stead of the full synchronize_rcu_expedited() which is where I get the kernel Oops. > That "pc =" down below is the program counter? If so, I am at a loss > as to what RCU could do to make it be zero. > No sure why this happens, if the RCU code is passing around pointers to worker function and this somehow ends up being a null pointer on the Alpha? /Magnus