netdev - Re: deadlock in virtnet_xdp

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Message-ID: <526b5396-459d-4d02-8635-a222d07b46d7@redhat.com>
Date: Tue, 25 Nov 2025 10:22:22 +0100
From: Paolo Abeni <pabeni@...hat.com>
To: "Michael S. Tsirkin" <mst@...hat.com>, Jason Wang <jasowang@...hat.com>,
 Xuan Zhuo <xuanzhuo@...ux.alibaba.com>, Eugenio Pérez
 <eperezma@...hat.com>
Cc: "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: deadlock in virtnet_xdp_set()

On 11/25/25 10:21 AM, Paolo Abeni wrote:
> the NIPA CI reported this deadlock in the virtio_net driver:
> 
> https://netdev-ctrl.bots.linux.dev/logs/vmksft/drv-hw-dbg/results/400961/3-xdp-py/stderr
> 
> while running the xdp self-test (tools/testing/selftests/drivers/net/xdp.py)
> 
> Quickly skimming over it I suspect a race similar to the one addressed
> by commit 1e20324b23f0 ("virtio-net: don't re-enable refill work too
> early when NAPI is disabled").
> 
> Could you please have a better look?

Whoops, sorry for the dup, I forgot adding netdev.

/P