Messages in this thread | | | From | Dexuan Cui <> | Subject | RE: [PATCH net,v4, 1/3] hv_netvsc: fix race of netvsc and VF register_netdevice | Date | Mon, 13 Nov 2023 02:47:44 +0000 |
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> From: LKML haiyangz <lkmlhyz@microsoft.com> On Behalf Of Haiyang Zhang > Sent: Friday, November 10, 2023 9:39 AM > [...] > > The rtnl lock also needs to be held before rndis_filter_device_add() > which advertises nvsp_2_vsc_capability / sriov bit, and triggers > VF NIC offering and registering. If VF NIC finished register_netdev() > earlier it may cause name based config failure. > > To fix this issue, move the call to rtnl_lock() before > rndis_filter_device_add(), so VF will be registered later than netvsc > / synthetic NIC, and gets a name numbered (ethX) after netvsc. > > Cc: stable@vger.kernel.org > Fixes: e04e7a7bbd4b ("hv_netvsc: Fix a deadlock by getting rtnl lock earlier in > netvsc_probe()") > Reported-by: Dexuan Cui <decui@microsoft.com> > Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> > Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Reviewed-by: Dexuan Cui <decui@microsoft.com>
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