Re: [PATCH v3 -next] mm/hugetlb_cgroup: register lockdep key for cftype

[SeongJae Park]

On Wed, 19 Jun 2024 01:55:27 +0000 Xiu Jianfeng <xiujianfeng@xxxxxxxxxx> wrote:

> When CONFIG_DEBUG_LOCK_ALLOC is enabled, the following commands can
> trigger a bug,
> 
> mount -t cgroup2 none /sys/fs/cgroup
> cd /sys/fs/cgroup
> echo "+hugetlb" > cgroup.subtree_control

[...]
> 
> Fixes: e18df2889ff9 ("mm/hugetlb_cgroup: prepare cftypes based on template")
> Reported-by: kernel test robot <oliver.sang@xxxxxxxxx>
> Closes: https://lore.kernel.org/oe-lkp/202406181046.8d8b2492-oliver.sang@xxxxxxxxx
> Signed-off-by: Xiu Jianfeng <xiujianfeng@xxxxxxxxxx>
> 
> ---
> v3: remove #ifdef CONFIG_DEBUG_LOCK_ALLOC in struct cftype

I confirmed the issue is fixed.

Tested-by: SeongJae Park <sj@xxxxxxxxxx>
Closes: https://lore.kernel.org/20240618233608.400367-1-sj@xxxxxxxxxx

[...]

Thanks,
SJ