Hi! On Wed, Aug 7, 2024 at 10:42 AM kernel test robot <oliver.sang@xxxxxxxxx> wrote: > hi, Jann Horn, > > as you educated me last time, I know this b82c7add4c is v5:) > the CONFIG_SLUB_RCU_DEBUG is really enabled, and we saw lots of WARNING in dmesg > https://download.01.org/0day-ci/archive/20240807/202408071606.258f19a0-oliver.sang@xxxxxxxxx/dmesg.xz > > not sure if it's expected? below report (parsed one of WARNING) just FYI. Thanks a lot, and sorry that my series is creating so much work for you... Okay, all these warnings at mm/slub.c:4550 are for the "if (WARN_ON(is_kfence_address(rcu_head)))" check, which was wrong up to v5 and fixed in v6. syzbot had also encountered that bug... Thanks for letting me know, and have a nice day!