Re: [PATCH] net: Fix qemu crash when hot-pluging a vhost-net failed.

[Jason Wang]

On Mon, Dec 5, 2022 at 2:23 PM Yangming <yangming73@huawei.com> wrote:
>
> Dear all:
>
>
>
> I found a bug of qemu: hot-pluging a vhost-net may cause virtual machine 
> crash in following steps:
> 1. Starting a vm without any net device.
> 2. Hot-pluging 70 memory devices.
> 3. Hot-pluging a vhost-net device.
>
>
>
> After the 3rd step, the qemu crashed with following messages:
>
>
>
> vhost backend memory slots limit is less than current number of present 
> memory slots
>
> warning: vhost-net requested but could not be initialized
>
> qemu-system-x86_64: ../net/net.c:1106: net_client_init1: Assertion `nc' 
> failed.
>
> 2022-12-05 03:14:08.794+0000: shutting down, reason=crashed
>
>
>
> This commit is used to fix the mentioned problem. It is based on commit 
> a33c25399f9bc3dcf83064adeba2a82e61bf4608 of master branch.

Thanks for the patch, would you please send a formal patch (not as an
attachment), you can do it via git-send-email.

Thanks

>
>
>
> Kind regards.
>
>