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From: Jason Gunthorpe <jgg@nvidia.com>
To: "Paul E. McKenney" <paulmck@kernel.org>
Cc: liuyixian@huawei.com, liweihang@huawei.com, sfr@canb.auug.org.au,
	linux-kernel@vger.kernel.org, linux-next@vger.kernel.org
Subject: Re: Lockdep splat in -next
Date: Mon, 28 Jun 2021 13:08:41 -0300	[thread overview]
Message-ID: <20210628160841.GD4459@nvidia.com> (raw)
In-Reply-To: <20210628153746.GA2237462@paulmck-ThinkPad-P17-Gen-1>

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

  reply	other threads:[~2021-06-28 16:08 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-28 15:37 Lockdep splat in -next Paul E. McKenney
2021-06-28 16:08 ` Jason Gunthorpe [this message]
2021-06-28 22:15   ` Paul E. McKenney

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