> On Mar 4, 2020, at 1:49 AM, Christophe Leroy <christophe.leroy@xxxxxx> wrote: > > AFAIU, you are not taking an interrupt here. You are stuck in the pte_update(), most likely due to nested locks. Try with LOCKDEP ? Not exactly sure what did you mean here, but the kernel has all lockdep enabled and did not flag anything here.