linux-kernel - Re: Linux 5.12-rc7

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Date:   Mon, 12 Apr 2021 12:31:02 -0400
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Guenter Roeck <linux@...ck-us.net>,
        Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Netdev <netdev@...r.kernel.org>
Subject: Re: Linux 5.12-rc7

On Mon, Apr 12, 2021 at 09:28:28AM -0700, Linus Torvalds wrote:
> On Sun, Apr 11, 2021 at 10:14 PM Guenter Roeck <linux@...ck-us.net> wrote:
> >
> > Qemu test results:
> >         total: 460 pass: 459 fail: 1
> > Failed tests:
> >         sh:rts7751r2dplus_defconfig:ata:net,virtio-net:rootfs
> >
> > The failure bisects to commit 0f6925b3e8da ("virtio_net: Do not pull payload in
> > skb->head"). It is a spurious problem - the test passes roughly every other
> > time. When the failure is seen, udhcpc fails to get an IP address and aborts
> > with SIGTERM. So far I have only seen this with the "sh" architecture.
> 
> Hmm. Let's add in some more of the people involved in that commit, and
> also netdev.
> 
> Nothing in there looks like it should have any interaction with
> architecture, so that "it happens on sh" sounds odd, but maybe it's
> some particular interaction with the qemu environment.
> 
>              Linus

Yea Eric's been trying to debug this already. Let's give him a bit more time...

-- 
MST