From: Jason Gunthorpe <jgg-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
To: Ralph Campbell <rcampbell-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
Cc: David Airlie <airlied-cv59FeDIM0c@public.gmane.org>,
"nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org"
<nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>,
"linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org"
<dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>,
"linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org"
<linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org>,
Ben Skeggs <bskeggs-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Subject: Re: [PATCH] drm/nouveau/dmem: missing mutex_lock in error path
Date: Fri, 14 Jun 2019 00:24:04 +0000 [thread overview]
Message-ID: <20190614002359.GI22062@mellanox.com> (raw)
In-Reply-To: <20190614001121.23950-1-rcampbell-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
On Thu, Jun 13, 2019 at 05:11:21PM -0700, Ralph Campbell wrote:
> In nouveau_dmem_pages_alloc(), the drm->dmem->mutex is unlocked before
> calling nouveau_dmem_chunk_alloc().
> Reacquire the lock before continuing to the next page.
>
> Signed-off-by: Ralph Campbell <rcampbell@nvidia.com>
> ---
>
> I found this while testing Jason Gunthorpe's hmm tree but this is
> independant of those changes. I guess it could go through
> David Airlie's tree for nouveau or Jason's tree.
This seems like a bad enough bug to send it into -rc?
It probably should go through the normal nouveau channels, thanks
Jason
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next prev parent reply other threads:[~2019-06-14 0:24 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-14 0:11 [PATCH] drm/nouveau/dmem: missing mutex_lock in error path Ralph Campbell
[not found] ` <20190614001121.23950-1-rcampbell-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2019-06-14 0:24 ` Jason Gunthorpe [this message]
2019-06-14 0:49 ` John Hubbard
2019-06-14 17:39 ` Ralph Campbell
2019-06-14 17:48 ` John Hubbard
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