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From:   Linus Torvalds <torvalds@linux-foundation.org>
Date:   Mon, 12 Apr 2021 09:28:28 -0700
Message-ID: <CAHk-=whYcwWgSPxuu8FxZ2i_cG7kw82m-Hbj0-67C6dk1Wb0tQ@mail.gmail.com>
Subject: Re: Linux 5.12-rc7
To:     Guenter Roeck <linux@roeck-us.net>,
        Xuan Zhuo <xuanzhuo@linux.alibaba.com>,
        Eric Dumazet <edumazet@google.com>,
        "Michael S. Tsirkin" <mst@redhat.com>
Cc:     Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Netdev <netdev@vger.kernel.org>
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On Sun, Apr 11, 2021 at 10:14 PM Guenter Roeck <linux@roeck-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