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Date: Wed, 21 Apr 2021 10:33:09 +0200 From: Nicolas Dichtel <nicolas.dichtel@...nd.com> To: Hristo Venev <hristo@...ev.name>, "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org> Cc: netdev@...r.kernel.org Subject: Re: [PATCH 1/2] net: sit: Unregister catch-all devices Le 12/04/2021 à 19:41, Hristo Venev a écrit : > A sit interface created without a local or a remote address is linked > into the `sit_net::tunnels_wc` list of its original namespace. When > deleting a network namespace, delete the devices that have been moved. > > The following script triggers a null pointer dereference if devices > linked in a deleted `sit_net` remain: > > for i in `seq 1 30`; do > ip netns add ns-test > ip netns exec ns-test ip link add dev veth0 type veth peer veth1 > ip netns exec ns-test ip link add dev sit$i type sit dev veth0 > ip netns exec ns-test ip link set dev sit$i netns $$ > ip netns del ns-test > done > for i in `seq 1 30`; do > ip link del dev sit$i > done > > Fixes: 5e6700b3bf98f ("sit: add support of x-netns") > Signed-off-by: Hristo Venev <hristo@...ev.name> Thank you for your patches. Please, think of putting original author in CC when you send a fix ;-) Regards, Nicolas
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