Subject: Re: Lockdep splat in -next

From: Jason Gunthorpe <[email-masked]>
Date: Mon, 28 Jun 2021 13:08:41 -0300

On Mon, Jun 28, 2021 at 08:37:46AM -0700, Paul E. McKenney wrote:
> Hello, Yixian Liu,
> 
> The following -next commit results in a lockdep splat:
> 
> 591f762b2750 ("RDMA/hns: Remove the condition of light load for posting DWQE")
> 
> The repeat-by is as follows:
> 
> tools/testing/selftests/rcutorture/bin/kvm.sh --allcpus --trust-make --duration 1 --configs TASKS01
> 
> The resulting splat is as shown below.  This appears to have been either
> fixed or obscured by a later commit, but it does affect bisectability.
> Which I found out about the hard way.  ;-)

I'm confused, the hns driver is causing this, and you are able to test
with the hns hardware???

Jason