Re: [syzbot] WARNING in cpuset_write_resmask
From: Waiman Long
Date: Tue Feb 22 2022 - 13:22:33 EST
On 2/22/22 12:26, Tejun Heo wrote:
(cc'ing Waiman and quoting whole body)
Hello, Waiman.
It looks like it's hitting
WARN_ON(!is_in_v2_mode() && !nodes_equal(cp->mems_allowed, cp->effective_mems))
Can you take a look?
My preliminary analysis is that the warning may be caused by my commit
1f1562fcd04a ("cgroup/cpuset: Don't let child cpusets restrict parent in
default hierarchy") since the merge branch e5313968c41b is missing the
fix commit d068eebbd482 ("cgroup/cpuset: Make child cpusets restrict
parents on v1 hierarchy"). I believe the problem should be gone once the
merge branch is updated to a later upstream baseline.
Cheers,
Longman