From: Bjorn Helgaas <helgaas@kernel.org>
To: Kirill Smelkov <kirr@nexedi.com>
Cc: Julia Lawall <julia.lawall@lip6.fr>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Kurt Schwemmer <kurt.schwemmer@microsemi.com>,
Logan Gunthorpe <logang@deltatee.com>,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
kbuild-all@01.org
Subject: Re: [PATCH] pci/switchtec: fix stream_open.cocci warnings (fwd)
Date: Wed, 19 Jun 2019 15:19:00 -0500 [thread overview]
Message-ID: <20190619201859.GA197717@google.com> (raw)
In-Reply-To: <20190619162713.GA19859@deco.navytux.spb.ru>
On Wed, Jun 19, 2019 at 04:27:52PM +0000, Kirill Smelkov wrote:
> Hi Julia, everyone.
>
> On Wed, Jun 19, 2019 at 12:28:47PM +0200, Julia Lawall wrote:
> > Hi,
> >
> > Can you forward this patch to the people below if you think it is
> > appropriate?
>
> Yes, this patch is appropriate. It was actually part of
> git.kernel.org/linus/c5bf68fe0c86 . It should be safe, (and desirable as
> it removes a chance for deadlock) to apply it.
>
> Sebastian, Kurt, Logan, Bjorn, please consider picking it up.
I don't get it. This appeared in v5.2-rc1 as c5bf68fe0c86 ("*: convert
stream-like files from nonseekable_open -> stream_open"), so it looks like
this is already done. What would you like me to do with it?
> > Could I tell the kbuild people to add you to the CC list for
> > this semantic patch?
>
> Yes, sure. Please feel free to add me to CC list for stream_open.cocci
> related patches.
>
> Kirill
>
>
> > thanks,
> > julia
> >
> > ---------- Forwarded message ----------
> > Date: Wed, 19 Jun 2019 18:23:18 +0800
> > From: kbuild test robot <lkp@intel.com>
> > To: kbuild@01.org
> > Cc: Julia Lawall <julia.lawall@lip6.fr>
> > Subject: [PATCH] pci/switchtec: fix stream_open.cocci warnings
> >
> > CC: kbuild-all@01.org
> > TO: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
> > CC: Kurt Schwemmer <kurt.schwemmer@microsemi.com>
> > CC: Logan Gunthorpe <logang@deltatee.com>
> > CC: Bjorn Helgaas <helgaas@kernel.org>
> > CC: linux-pci@vger.kernel.org
> > CC: linux-kernel@vger.kernel.org
> >
> > From: kbuild test robot <lkp@intel.com>
> >
> > drivers/pci/switch/switchtec.c:395:1-17: ERROR: switchtec_fops: .read() can deadlock .write(); change nonseekable_open -> stream_open to fix.
> >
> > Generated by: scripts/coccinelle/api/stream_open.cocci
> >
> > Fixes: a3a1e895d4fa ("pci/switchtec: Don't use completion's wait queue")
> > Signed-off-by: kbuild test robot <lkp@intel.com>
> > ---
> >
> > tree: https://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-5.0.y-rt-rebase
> > head: 31cc76d5590f5e60c2f26f029e40bc7d0441d93f
> > commit: a3a1e895d4fa0508e11ac9107ace883a5b2a4d3b [171/305] pci/switchtec: Don't use completion's wait queue
> > :::::: branch date: 6 days ago
> > :::::: commit date: 6 days ago
> >
> > Please take the patch only if it's a positive warning. Thanks!
> >
> > switchtec.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > --- a/drivers/pci/switch/switchtec.c
> > +++ b/drivers/pci/switch/switchtec.c
> > @@ -392,7 +392,7 @@ static int switchtec_dev_open(struct ino
> > return PTR_ERR(stuser);
> >
> > filp->private_data = stuser;
> > - nonseekable_open(inode, filp);
> > + stream_open(inode, filp);
> >
> > dev_dbg(&stdev->dev, "%s: %p\n", __func__, stuser);
> >
next prev parent reply other threads:[~2019-06-19 20:19 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <alpine.DEB.2.20.1906191227430.3726@hadrien>
2019-06-19 16:27 ` [PATCH] pci/switchtec: fix stream_open.cocci warnings (fwd) Kirill Smelkov
2019-06-19 19:47 ` Logan Gunthorpe
2019-06-19 20:19 ` Bjorn Helgaas [this message]
2019-06-19 20:21 ` Julia Lawall
2019-06-20 7:01 ` kirr
2019-06-21 16:42 ` Sebastian Andrzej Siewior
2019-04-13 16:50 Julia Lawall
2019-04-13 16:56 ` Logan Gunthorpe
2019-04-13 17:01 ` Kirill Smelkov
2019-04-15 14:38 ` Sebastian Andrzej Siewior
2019-04-15 14:55 ` Kirill Smelkov
2019-04-15 15:20 ` Sebastian Andrzej Siewior
2019-04-15 15:41 ` Kirill Smelkov
2019-04-17 21:54 ` Bjorn Helgaas
2019-04-18 5:31 ` Julia Lawall
2019-04-18 10:38 ` Kirill Smelkov
2019-04-18 12:37 ` Bjorn Helgaas
2019-04-18 14:42 ` Kirill Smelkov
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