• David Ahern's avatar
    net: vrf: Fix dst reference counting · 9ab179d8
    David Ahern authored
    Vivek reported a kernel exception deleting a VRF with an active
    connection through it. The root cause is that the socket has a cached
    reference to a dst that is destroyed. Converting the dst_destroy to
    dst_release and letting proper reference counting kick in does not
    work as the dst has a reference to the device which needs to be released
    as well.
    I talked to Hannes about this at netdev and he pointed out the ipv4 and
    ipv6 dst handling has dst_ifdown for just this scenario. Rather than
    continuing with the reinvented dst wheel in VRF just remove it and
    leverage the ipv4 and ipv6 versions.
    Fixes: 193125db ("net: Introduce VRF device driver")
    Fixes: 35402e31 ("net: Add IPv6 support to VRF device")
    Signed-off-by: default avatarDavid Ahern <dsa@cumulusnetworks.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
ip6_route.h 5.91 KB