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| author |   Thadeu Lima de Souza Cascardo <cascardo@canonical.com> | 2018-08-31 08:38:49 -0300 |
|---|---|---|
| committer |   Steffen Klassert <steffen.klassert@secunet.com> | 2018-09-03 07:37:57 +0200 |
| commit | 215ab0f021c9fea3c18b75e7d522400ee6a49990 (patch) | |
| tree | 207c34d777bb1e7d24f658929e96b7a51d0cfed7 /net/ipv6/xfrm6_mode_transport.c | |
| parent | xfrm: Validate address prefix lengths in the xfrm selector. (diff) | |
| download | linux-dev-215ab0f021c9fea3c18b75e7d522400ee6a49990.tar.xz linux-dev-215ab0f021c9fea3c18b75e7d522400ee6a49990.zip | |
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_mode_transport.c')
0 files changed, 0 insertions, 0 deletions