From: "Michael S. Tsirkin" <mst@redhat.com>
To: David Ahern <dsa@cumulusnetworks.com>
Cc: jasowang@redhat.com, "netdev@vger.kernel.org" <netdev@vger.kernel.org>
Subject: Re: WARN_ON running XDP on virtio net device
Date: Tue, 11 Apr 2017 00:24:08 +0300 [thread overview]
Message-ID: <20170411002325-mutt-send-email-mst@kernel.org> (raw)
In-Reply-To: <9370d199-9a73-308c-97d0-8d473e8536b2@cumulusnetworks.com>
On Mon, Apr 10, 2017 at 03:21:53PM -0600, David Ahern wrote:
> I'm hitting a WARN_ON running XDP with virtio net:
>
> [ 177.185570] ------------[ cut here ]------------
> [ 177.187250] WARNING: CPU: 0 PID: 880 at
> /home/dsa/kernel.git/drivers/pci/msi.c:1251 pci_irq_vector+0x92/0x123
> [ 177.190932] Modules linked in: 8021q garp mrp stp llc vrf
> [ 177.193473] CPU: 0 PID: 880 Comm: xdp1 Not tainted 4.11.0-rc5+ #305
> [ 177.195640] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
> BIOS 1.7.5-20140531_083030-gandalf 04/01/2014
> [ 177.199190] Call Trace:
> [ 177.200072] dump_stack+0x81/0xb6
> [ 177.201018] __warn+0x107/0x122
> [ 177.201899] warn_slowpath_null+0x1d/0x1f
> [ 177.203014] pci_irq_vector+0x92/0x123
> [ 177.204082] vp_synchronize_vectors+0x6f/0x81
> [ 177.205293] vp_reset+0x50/0x55
> [ 177.206174] virtnet_xdp+0x346/0x6dd
> [ 177.207188] dev_change_xdp_fd+0x12a/0x151
> [ 177.208256] do_setlink+0x1288/0x130a
>
> Seems to be something introduced in the past month or so. 2 attempts to
> bisect it pointed to this commit:
>
> commit 54d7989f476ca57fc3c5cc71524c480ccb74c481
> Merge: 0f221a3102bb c4baad50297d
> Author: Linus Torvalds <torvalds@linux-foundation.org>
> Date: Thu Mar 2 13:53:13 2017 -0800
>
> Merge tag 'for_linus' of
> git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
>
> Pull vhost updates from Michael Tsirkin:
> "virtio, vhost: optimizations, fixes
I'm preparing a pull request reverting some changes we made
there. I'd be thankful if you can check whether
git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost linux-next
help with this.
Thanks
--
MST
next prev parent reply other threads:[~2017-04-10 21:24 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-10 21:21 WARN_ON running XDP on virtio net device David Ahern
2017-04-10 21:24 ` Michael S. Tsirkin [this message]
2017-04-10 21:37 ` Michael S. Tsirkin
2017-04-10 22:33 ` David Ahern
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