From: Jason Gunthorpe <jgg@ziepe.ca>
To: linux-rdma@vger.kernel.org
Cc: Bernard Metzler <bmt@zurich.ibm.com>, parav@mellanox.com
Subject: Re: [PATCH] RDMA/cma: Teach lockdep about the order of rtnl and lock
Date: Tue, 10 Mar 2020 14:27:30 -0300 [thread overview]
Message-ID: <20200310172730.GA5656@ziepe.ca> (raw)
In-Reply-To: <20200227203651.GA27185@ziepe.ca>
On Thu, Feb 27, 2020 at 04:36:51PM -0400, Jason Gunthorpe wrote:
> This lock ordering only happens when bonding is enabled and
> a certain bonding related event fires. However, since it can happen this
> is a global restriction on lock ordering.
>
> Teach lockdep about the order directly and unconditionally so bugs here
> are found quickly.
>
> See https://syzkaller.appspot.com/bug?extid=55de90ab5f44172b0c90
>
> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
> ---
> drivers/infiniband/core/cma.c | 13 +++++++++++++
> 1 file changed, 13 insertions(+)
Lets give it a go, applied to for-next
Jason
prev parent reply other threads:[~2020-03-10 17:27 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-27 20:36 [PATCH] RDMA/cma: Teach lockdep about the order of rtnl and lock Jason Gunthorpe
2020-03-10 17:27 ` Jason Gunthorpe [this message]
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