Merge branch 'rds-fixes'
Sowmini Varadhan says:
====================
rds: tcp: fix various rds-tcp issues during netns create/delete sequences
Dmitry Vyukov reported some syszkaller panics during netns deletion.
While I have not been able to reproduce those exact panics, my attempts
to do so uncovered a few other problems, which are fixed patch 2 and
patch 3 of this patch series. In addition, as mentioned in,
https://www.spinics.net/lists/netdev/msg422997.html
code-inspection points that the rds_connection needs to take an explicit
refcnt on the struct net so that it is held down until all cleanup is
completed for netns removal, and this is fixed by patch1.
The following scripts were run concurrently to uncover/test patch{2, 3}
while simultaneously running rds-ping to 12.0.0.18 from another system:
# cat del.rds
while [ 1 ]; do
modprobe rds_tcp
modprobe -r rds-tcp
done
# cat del.netns
while [ 1 ]; do
ip netns delete blue
ip netns add blue
ip link add link eth1 address a:b:c:d:e:f blue0 type macvlan
ip link set blue0 netns blue
ip netns exec blue ip addr add 12.0.0.18/24 dev blue0
ip netns exec blue ifconfig blue0 up
sleep 3;
done
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
