Re: [PATCH] slub: make sysfs file removal asynchronous

[Andrew Morton]

On Tue, 20 Jun 2017 16:45:12 -0400 Tejun Heo <tj@xxxxxxxxxx> wrote:

> bf5eb3de3847 ("slub: separate out sysfs_slab_release() from
> sysfs_slab_remove()") made slub sysfs file removals synchronous to
> kmem_cache shutdown.  Unfortunately, this created a possible ABBA
> deadlock between slab_mutex and sysfs draining mechanism triggering
> the following lockdep warning.
> 
> ...
>
> Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
> Reported-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx>
> Tested-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx>
> Fixes: bf5eb3de3847 ("slub: separate out sysfs_slab_release() from sysfs_slab_remove()")

Do you think we should add cc:stable [4.11+]?