On 2/21/23 9:20 PM, Lu Wei wrote:sorry, I did't get you point before, just wrote it as how syzbot triggers. In my syzbot, it is triggered
@@ -655,6 +655,99 @@ fib_nexthop_test()
cleanup
}
+fib6_notify_test()
+{
+ setup
+
+ echo
+ echo "Fib6 info length calculation in route notify test"
+ set -e
+
+ for i in 10 20 30 40 50 60 70;
+ do
+ $IP link add dummy_$i type dummy
+ $IP link set dev dummy_$i up
+ $IP -6 address add 2001:$i::1/64 dev dummy_$i
+ done
+
+ $IP -6 route add 2001::/64 \
+ nexthop encap ip6 dst 2002::10 via 2001:10::2 dev dummy_10 \
+ nexthop encap ip6 dst 2002::20 via 2001:20::2 dev dummy_20 \
+ nexthop encap ip6 dst 2002::30 via 2001:30::2 dev dummy_30 \
+ nexthop encap ip6 dst 2002::40 via 2001:40::2 dev dummy_40 \
+ nexthop encap ip6 dst 2002::50 via 2001:50::2 dev dummy_50 \
+ nexthop encap ip6 dst 2002::60 via 2001:60::2 dev dummy_60
I think you want the non-lwtunnel path to be first (it is the one
assumed to have the same size as the remaining paths).
+same here.
+ set +e
+
+ $NS_EXEC ip monitor route &> errors.txt &
+
+ sleep 2
+ $IP -6 route append 2001::/64 via 2001:70::2 dev dummy_70
+
+ err=`cat errors.txt |grep "Message too long"`
+ if [ -z "$err" ];then
+ ret=0
+ else
+ ret=1
+ fi
+
+ log_test $ret 0 "ipv6 route add notify"
+
+ { kill %% && wait %%; } 2>/dev/null
+
+ #rm errors.txt
+
+ cleanup &> /dev/null
+}
+
+
+fib_notify_test()
+{
+ setup
+
+ echo
+ echo "Fib4 info length calculation in route notify test"
+
+ set -e
+
+ for i in 10 20 30 40 50 60 70;
+ do
+ $IP link add dummy_$i type dummy
+ $IP link set dev dummy_$i up
+ $IP address add 20.20.$i.2/24 dev dummy_$i
+ done
+
+ $NS_EXEC ip monitor route &> errors.txt &
+ sleep 2
+
+ $IP route add 10.0.0.0/24 \
+ nexthop encap ip dst 192.168.10.10 via 20.20.10.1 dev dummy_10 \
+ nexthop encap ip dst 192.168.10.20 via 20.20.20.1 dev dummy_20 \
+ nexthop encap ip dst 192.168.10.30 via 20.20.30.1 dev dummy_30 \
+ nexthop encap ip dst 192.168.10.40 via 20.20.40.1 dev dummy_40 \
+ nexthop encap ip dst 192.168.10.50 via 20.20.50.1 dev dummy_50 \
+ nexthop encap ip dst 192.168.10.60 via 20.20.60.1 dev dummy_60 \
+ nexthop via 20.20.70.1 dev dummy_70
.