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xfrm6_tunnel: Fix potential panic when unloading xfrm6_tunnel module
When unloading xfrm6_tunnel module, xfrm6_tunnel_fini directly frees the xfrm6_tunnel_spi_kmem. Maybe someone has gotten the xfrm6_tunnel_spi, so need to wait it. Fixes: 91cc3bb("xfrm6_tunnel: RCU conversion") Signed-off-by: Su Yanjun <[email protected]> Acked-by: Herbert Xu <[email protected]> Signed-off-by: Steffen Klassert <[email protected]>
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