From: Jason Gunthorpe <jgg@ziepe.ca>
To: Dennis Dalessandro <dennis.dalessandro@intel.com>
Cc: dledford@redhat.com, linux-rdma@vger.kernel.org,
"Michael J. Ruhl" <michael.j.ruhl@intel.com>,
Mike Marciniszyn <mike.marciniszyn@intel.com>,
stable@vger.kernel.org
Subject: Re: [PATCH for-next 3/3] IB/hfi1: Close race condition on user context disable and close
Date: Wed, 6 Mar 2019 14:47:40 -0400 [thread overview]
Message-ID: <20190306184740.GH1662@ziepe.ca> (raw)
In-Reply-To: <03a0a78b-8ae6-26b2-7d6c-9d605971d975@intel.com>
On Tue, Mar 05, 2019 at 10:30:39AM -0500, Dennis Dalessandro wrote:
> On 3/4/2019 3:41 PM, Jason Gunthorpe wrote:
> > On Tue, Feb 26, 2019 at 12:15:59PM -0500, Dennis Dalessandro wrote:
> > > On 2/26/2019 11:45 AM, Dennis Dalessandro wrote:
> > > > struct hfi1_ctxtdata *hfi1_rcd_get_by_index(struct hfi1_devdata *dd, u16 ctxt);
> > > > diff --git a/drivers/infiniband/hw/hfi1/init.c b/drivers/infiniband/hw/hfi1/init.c
> > > > index 7841a0a..2cc5164 100644
> > > > +++ b/drivers/infiniband/hw/hfi1/init.c
> > > > @@ -214,12 +214,12 @@ static void hfi1_rcd_free(struct kref *kref)
> > > > struct hfi1_ctxtdata *rcd =
> > > > container_of(kref, struct hfi1_ctxtdata, kref);
> > > > - hfi1_free_ctxtdata(rcd->dd, rcd);
> > > > -
> > > > spin_lock_irqsave(&rcd->dd->uctxt_lock, flags);
> > > > rcd->dd->rcd[rcd->ctxt] = NULL;
> > > > spin_unlock_irqrestore(&rcd->dd->uctxt_lock, flags);
> > > > + hfi1_free_ctxtdata(rcd->dd, rcd);
> > > > +
> > > > kfree(rcd);
> > > > }
> > > Whoops, hold off on pulling this one just yet. We need to take a closer look
> > > at the above hunk.
> >
> > Oh, okay.. Please resend it
>
> We've talked it over, it is OK to take after all. Just needed to be sure and
> folks were on vacation last week. If you still have the patch it's good to
> go, if not I'll tack it on my next submit as well.
Okay I grabbed the old one
Jason
next prev parent reply other threads:[~2019-03-06 18:47 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-26 16:45 [PATCH for-next 0/3] Driver fixes Dennis Dalessandro
2019-02-26 16:45 ` [PATCH for-next 1/3] IB/rdmavt: Fix loopback send with invalidate ordering Dennis Dalessandro
2019-02-26 16:45 ` [PATCH for-next 2/3] IB/rdmavt: Fix concurrency panics in QP post_send and modify to error Dennis Dalessandro
2019-02-26 16:45 ` [PATCH for-next 3/3] IB/hfi1: Close race condition on user context disable and close Dennis Dalessandro
2019-02-26 17:15 ` Dennis Dalessandro
2019-03-04 20:41 ` Jason Gunthorpe
2019-03-05 15:30 ` Dennis Dalessandro
2019-03-06 18:47 ` Jason Gunthorpe [this message]
2019-03-04 19:49 ` [PATCH for-next 0/3] Driver fixes Jason Gunthorpe
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