On Fri, 10 Dec 2021 10:20:58 -0800, Davidlohr Bueso wrote: > do_each_pid_thread(PIDTYPE_PGID) can race with a concurrent > change_pid(PIDTYPE_PGID) that can move the task from one hlist > to another while iterating. Serialize ioprio_get to take > the tasklist_lock in this case, just like it's set counterpart. > > Applied, thanks! [1/1] block: fix ioprio_get(IOPRIO_WHO_PGRP) vs setuid(2) commit: e6a59aac8a8713f335a37d762db0dbe80e7f6d38 Best regards, -- Jens Axboe