netdev - Re: [PATCH vhost 0/2] virtio_net: fix for stuck when change ring size with dev down

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20220811041041-mutt-send-email-mst@kernel.org>
Date:   Thu, 11 Aug 2022 04:11:22 -0400
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
Cc:     virtualization@...ts.linux-foundation.org,
        Jason Wang <jasowang@...hat.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org
Subject: Re: [PATCH vhost 0/2] virtio_net: fix for stuck when change ring
 size with dev down

On Thu, Aug 11, 2022 at 04:02:56PM +0800, Xuan Zhuo wrote:
> When dev is set to DOWN state, napi has been disabled, if we modify the
> ring size at this time, we should not call napi_disable() again, which
> will cause stuck.
> 
> And all operations are under the protection of rtnl_lock, so there is no
> need to consider concurrency issues.
> 
> PS.
> Hi Michael, I don't know which way is more convenient for you, so I split the
> commit into two commits, so you can fixup to my previous commit:
> 
>     virtio_net: support tx queue resize
> 	virtio_net: support rx queue resize
> 
> Xuan Zhuo (2):
>   virtio_net: fix for stuck when change rx ring size with dev down
>   virtio_net: fix for stuck when change tx ring size with dev down
> 
>  drivers/net/virtio_net.c | 14 ++++++++++----
>  1 file changed, 10 insertions(+), 4 deletions(-)


Which patches does this fix?
Maybe I should squash.

> --
> 2.31.0