netdev - Re: [PATCH] hv_netvsc:Register VF in netvsc_probe if NET_DEVICE

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Message-ID: <20240130182914.25df5128@kernel.org>
Date: Tue, 30 Jan 2024 18:29:14 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: Shradha Gupta <shradhagupta@...ux.microsoft.com>
Cc: "K. Y. Srinivasan" <kys@...rosoft.com>, Haiyang Zhang
 <haiyangz@...rosoft.com>, Wei Liu <wei.liu@...nel.org>, Dexuan Cui
 <decui@...rosoft.com>, "David S. Miller" <davem@...emloft.net>, Eric
 Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Wojciech
 Drewek <wojciech.drewek@...el.com>, linux-hyperv@...r.kernel.org,
 netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
 shradhagupta@...rosoft.com, stable@...r.kernel.org
Subject: Re: [PATCH] hv_netvsc:Register VF in netvsc_probe if
 NET_DEVICE_REGISTER missed

On Mon, 29 Jan 2024 23:18:55 -0800 Shradha Gupta wrote:
> If hv_netvsc driver is removed and reloaded, the NET_DEVICE_REGISTER
> handler cannot perform VF register successfully as the register call
> is received before netvsc_probe is finished. This is because we
> register register_netdevice_notifier() very early(even before
> vmbus_driver_register()).
> To fix this, we try to register each such matching VF( if it is visible
> as a netdevice) at the end of netvsc_probe.
> 
> Cc: stable@...r.kernel.org
> Fixes: 85520856466e ("hv_netvsc: Fix race of register_netdevice_notifier and VF register")
> Suggested-by: Dexuan Cui <decui@...rosoft.com>
> Signed-off-by: Shradha Gupta <shradhagupta@...ux.microsoft.com>

Does not seem to apply to net/main, please respin