Haiyang Zhang bec3ae2938 hv_netvsc: fix race of netvsc and VF register_netdevice ...

[ Upstream commit d30fb712e5 ]

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: e04e7a7bbd ("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: Simon Horman <horms@kernel.org>
Reviewed-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2023-12-08 08:48:02 +01:00

..

hyperv_net.h

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Kconfig

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Makefile

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netvsc_bpf.c

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netvsc_drv.c

hv_netvsc: fix race of netvsc and VF register_netdevice

2023-12-08 08:48:02 +01:00

netvsc_trace.c

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netvsc_trace.h

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netvsc.c

hv_netvsc: Check status in SEND_RNDIS_PKT completion message

2023-03-10 09:39:51 +01:00

rndis_filter.c

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