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authorThadeu Lima de Souza Cascardo <cascardo@canonical.com>2018-08-31 14:38:49 +0300
committerSteffen Klassert <steffen.klassert@secunet.com>2018-09-03 08:37:57 +0300
commit215ab0f021c9fea3c18b75e7d522400ee6a49990 (patch)
tree207c34d777bb1e7d24f658929e96b7a51d0cfed7 /net/ipv6/xfrm6_input.c
parent07bf7908950a8b14e81aa1807e3c667eab39287a (diff)
downloadlinux-215ab0f021c9fea3c18b75e7d522400ee6a49990.tar.xz
xfrm6: call kfree_skb when skb is toobig
After commit d6990976af7c5d8f55903bfb4289b6fb030bf754 ("vti6: fix PMTU caching and reporting on xmit"), some too big skbs might be potentially passed down to __xfrm6_output, causing it to fail to transmit but not free the skb, causing a leak of skb, and consequentially a leak of dst references. After running pmtu.sh, that shows as failure to unregister devices in a namespace: [ 311.397671] unregister_netdevice: waiting for veth_b to become free. Usage count = 1 The fix is to call kfree_skb in case of transmit failures. Fixes: dd767856a36e ("xfrm6: Don't call icmpv6_send on local error") Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/ipv6/xfrm6_input.c')
0 files changed, 0 insertions, 0 deletions