Hi,
The test failed with the latest torvalds tree kernel 6.4-rc5-00305-g022ce8862dff on AMD Ryzen 9 and Ubuntu 22.04 Jammy.
The config is a merge of Ubuntu generic config and selftest config files.
Debug output with `set -x` is [edited]:
root@host:selftests/drivers/net/bonding# ./bond-arp-interval-causes-panic.sh Cannot find device "link1_1" root@defiant:/home/marvin/linux/kernel/linux_torvalds/tools/testing/selftests/drivers/net/bonding# vi !$ vi ./bond-arp-interval-causes-panic.sh root@host:selftests/drivers/net/bonding# ./bond-arp-interval-causes-panic.sh + test 0 -ne 0 + trap finish EXIT + client_ip4=192.168.1.198 + server_ip4=192.168.1.254 + echo 180 + ip link add dev link1_1 type veth peer name link1_2 + ip netns add server + ip link set dev link1_2 netns server up name eth0 + ip netns exec server ip addr add 192.168.1.254/24 dev eth0 + ip netns add client + ip link set dev link1_1 netns client down name eth0 + ip netns exec client ip link add dev bond0 down type bond mode 1 miimon 100 all_slaves_active 1 + ip netns exec client ip link set dev eth0 down master bond0 + ip netns exec client ip link set dev bond0 up + ip netns exec client ip addr add 192.168.1.198/24 dev bond0 + ip netns exec client ping -c 5 192.168.1.254 + finish + ip netns delete server + ip netns delete client + ip link del link1_1 Cannot find device "link1_1" + true root@host:testing/selftests/drivers/net/bonding# uname -rms Linux 6.4.0-rc5-kmlk-netdbg-iwlwifi-00305-g022ce8862dff x86_64 root@host:testing/selftests/drivers/net/bonding#
Some debugging:
I have added some "ip link show" commands in the finish() function:
finish() { ip link show ip netns delete server || true ip netns delete client || true ip link show ip link del link1_1 || true }
Now the debug output is like this:
root@host:selftests/drivers/net/bonding# ./bond-arp-interval-causes-panic.sh + test 0 -ne 0 + trap finish EXIT + client_ip4=192.168.1.198 + server_ip4=192.168.1.254 + echo 180 + ip link add dev link1_1 type veth peer name link1_2 + ip netns add server + ip link set dev link1_2 netns server up name eth0 + ip netns exec server ip addr add 192.168.1.254/24 dev eth0 + ip netns add client + ip link set dev link1_1 netns client down name eth0 + ip netns exec client ip link add dev bond0 down type bond mode 1 miimon 100 all_slaves_active 1 + ip netns exec client ip link set dev eth0 down master bond0 + ip netns exec client ip link set dev bond0 up + ip netns exec client ip addr add 192.168.1.198/24 dev bond0 + ip netns exec client ping -c 5 192.168.1.254 + finish + ip link show 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 2: dummy0: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether 02:fc:ca:49:e2:d4 brd ff:ff:ff:ff:ff:ff 3: tunl0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ipip 0.0.0.0 brd 0.0.0.0 4: gre0@NONE: <NOARP> mtu 1476 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/gre 0.0.0.0 brd 0.0.0.0 5: gretap0@NONE: <BROADCAST,MULTICAST> mtu 1462 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff 6: erspan0@NONE: <BROADCAST,MULTICAST> mtu 1450 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff 7: ip_vti0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ipip 0.0.0.0 brd 0.0.0.0 8: ip6_vti0@NONE: <NOARP> mtu 1332 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/tunnel6 :: brd :: permaddr 325b:a7df:c8db:: 9: sit0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/sit 0.0.0.0 brd 0.0.0.0 10: ip6tnl0@NONE: <NOARP> mtu 1452 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/tunnel6 :: brd :: permaddr 76d3:be76:4187:: 11: ip6gre0@NONE: <NOARP> mtu 1448 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/gre6 :: brd :: permaddr 569b:65fd:b94b:: 12: enp16s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000 link/ether 9c:6b:00:01:fb:80 brd ff:ff:ff:ff:ff:ff + ip netns delete server + ip netns delete client + ip link show 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 2: dummy0: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether 02:fc:ca:49:e2:d4 brd ff:ff:ff:ff:ff:ff 3: tunl0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ipip 0.0.0.0 brd 0.0.0.0 4: gre0@NONE: <NOARP> mtu 1476 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/gre 0.0.0.0 brd 0.0.0.0 5: gretap0@NONE: <BROADCAST,MULTICAST> mtu 1462 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff 6: erspan0@NONE: <BROADCAST,MULTICAST> mtu 1450 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff 7: ip_vti0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ipip 0.0.0.0 brd 0.0.0.0 8: ip6_vti0@NONE: <NOARP> mtu 1332 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/tunnel6 :: brd :: permaddr 325b:a7df:c8db:: 9: sit0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/sit 0.0.0.0 brd 0.0.0.0 10: ip6tnl0@NONE: <NOARP> mtu 1452 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/tunnel6 :: brd :: permaddr 76d3:be76:4187:: 11: ip6gre0@NONE: <NOARP> mtu 1448 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/gre6 :: brd :: permaddr 569b:65fd:b94b:: 12: enp16s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000 link/ether 9c:6b:00:01:fb:80 brd ff:ff:ff:ff:ff:ff + ip link del link1_1 Cannot find device "link1_1" + true root@host:selftests/drivers/net/bonding#
Adding more `ip link show` before and after operations with link_1 had shown that `ip link set dev link1_1 netns client down name eth0` command shuts down the link, so the `ip link del link1_1` doesn't succeed, as seen here:
+ ip netns exec server ip addr add 192.168.1.254/24 dev eth0 + ip netns add client + ip link show 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 2: dummy0: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether 02:fc:ca:49:e2:d4 brd ff:ff:ff:ff:ff:ff 3: tunl0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ipip 0.0.0.0 brd 0.0.0.0 4: gre0@NONE: <NOARP> mtu 1476 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/gre 0.0.0.0 brd 0.0.0.0 5: gretap0@NONE: <BROADCAST,MULTICAST> mtu 1462 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff 6: erspan0@NONE: <BROADCAST,MULTICAST> mtu 1450 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff 7: ip_vti0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ipip 0.0.0.0 brd 0.0.0.0 8: ip6_vti0@NONE: <NOARP> mtu 1332 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/tunnel6 :: brd :: permaddr 325b:a7df:c8db:: 9: sit0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/sit 0.0.0.0 brd 0.0.0.0 10: ip6tnl0@NONE: <NOARP> mtu 1452 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/tunnel6 :: brd :: permaddr 76d3:be76:4187:: 11: ip6gre0@NONE: <NOARP> mtu 1448 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/gre6 :: brd :: permaddr 569b:65fd:b94b:: 12: enp16s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000 link/ether 9c:6b:00:01:fb:80 brd ff:ff:ff:ff:ff:ff 64: link1_1@if63: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether 32:d6:de:9f:5d:e2 brd ff:ff:ff:ff:ff:ff link-netns server + ip link set dev link1_1 netns client down name eth0 + ip link show 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 2: dummy0: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether 02:fc:ca:49:e2:d4 brd ff:ff:ff:ff:ff:ff 3: tunl0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ipip 0.0.0.0 brd 0.0.0.0 4: gre0@NONE: <NOARP> mtu 1476 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/gre 0.0.0.0 brd 0.0.0.0 5: gretap0@NONE: <BROADCAST,MULTICAST> mtu 1462 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff 6: erspan0@NONE: <BROADCAST,MULTICAST> mtu 1450 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff 7: ip_vti0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ipip 0.0.0.0 brd 0.0.0.0 8: ip6_vti0@NONE: <NOARP> mtu 1332 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/tunnel6 :: brd :: permaddr 325b:a7df:c8db:: 9: sit0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/sit 0.0.0.0 brd 0.0.0.0 10: ip6tnl0@NONE: <NOARP> mtu 1452 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/tunnel6 :: brd :: permaddr 76d3:be76:4187:: 11: ip6gre0@NONE: <NOARP> mtu 1448 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/gre6 :: brd :: permaddr 569b:65fd:b94b:: 12: enp16s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000 link/ether 9c:6b:00:01:fb:80 brd ff:ff:ff:ff:ff:ff + ip netns exec client ip link add dev bond0 down type bond mode 1 miimon 100 all_slaves_active 1
Hope this helps.
I am not sure what is the right thing to do with this test, and whether it is the expected behaviour of the kernel.
Best regards, Mirsad