This issue is still present also on jammy 5.15. Some details that I found: - the purpose of this test is to verify that an ICMP6 packet is not forwarded by a virtual router if it needs to do fragmentation - the test creates 3 network namespaces representing host1, host2 and router - host1 and host2 have mtu 1500, router has mtu 1400 - the test consists of a ping6 from host1 to host2 (via router) using a payload of 1450, so host1 and host2 don't need to fragment the packet, but router does - therefore the ping is expected to fail (and this is happennig), but we should also receive a "Packet too big" message from the router and we don't
So at the end the behavior is correct, but we're missing the "Packet too big" notification from ping. I'm not sure if it's a user-space issue (in iputils-ping) or a kernel issue. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-oem-5.10 in Ubuntu. https://bugs.launchpad.net/bugs/1928890 Title: vrf_route_leaking.sh in net from ubuntu_kernel_selftests linux ADT test failure with linux/5.11.0-18.19 (Ping received ICMP Packet too big) Status in ubuntu-kernel-tests: New Status in linux package in Ubuntu: Incomplete Status in linux-oem-5.10 package in Ubuntu: New Status in linux source package in Hirsute: New Status in linux-oem-5.10 source package in Hirsute: New Bug description: This is a scripted bug report about ADT failures while running linux tests for linux/5.11.0-18.19 on hirsute. Whether this is caused by the dep8 tests of the tested source or the kernel has yet to be determined. Not a regression. Found to occur previously on hirsute/linux 5.11.0-14.15 Testing failed on: amd64: https://autopkgtest.ubuntu.com/results/autopkgtest-hirsute/hirsute/amd64/l/linux/20210515_005957_75e5a@/log.gz arm64: https://autopkgtest.ubuntu.com/results/autopkgtest-hirsute/hirsute/arm64/l/linux/20210513_203508_96fd3@/log.gz ppc64el: https://autopkgtest.ubuntu.com/results/autopkgtest-hirsute/hirsute/ppc64el/l/linux/20210513_163708_c0203@/log.gz s390x: https://autopkgtest.ubuntu.com/results/autopkgtest-hirsute/hirsute/s390x/l/linux/20210513_144454_54b04@/log.gz 00:09:30 DEBUG| [stdout] # selftests: net: vrf_route_leaking.sh 00:09:30 DEBUG| [stdout] # 00:09:30 DEBUG| [stdout] # ########################################################################### 00:09:30 DEBUG| [stdout] # IPv4 (sym route): VRF ICMP ttl error route lookup ping 00:09:30 DEBUG| [stdout] # ########################################################################### 00:09:30 DEBUG| [stdout] # 00:09:32 DEBUG| [stdout] # TEST: Basic IPv4 connectivity [ OK ] 00:09:32 DEBUG| [stdout] # TEST: Ping received ICMP ttl exceeded [ OK ] 00:09:32 DEBUG| [stdout] # 00:09:32 DEBUG| [stdout] # ########################################################################### 00:09:32 DEBUG| [stdout] # IPv4 (sym route): VRF ICMP error route lookup traceroute 00:09:32 DEBUG| [stdout] # ########################################################################### 00:09:32 DEBUG| [stdout] # 00:09:32 DEBUG| [stdout] # SKIP: Could not run IPV4 test without traceroute 00:09:32 DEBUG| [stdout] # 00:09:32 DEBUG| [stdout] # ########################################################################### 00:09:32 DEBUG| [stdout] # IPv4 (sym route): VRF ICMP fragmentation error route lookup ping 00:09:32 DEBUG| [stdout] # ########################################################################### 00:09:32 DEBUG| [stdout] # 00:09:34 DEBUG| [stdout] # TEST: Basic IPv4 connectivity [ OK ] 00:09:34 DEBUG| [stdout] # TEST: Ping received ICMP Frag needed [ OK ] 00:09:34 DEBUG| [stdout] # 00:09:34 DEBUG| [stdout] # ########################################################################### 00:09:34 DEBUG| [stdout] # IPv4 (asym route): VRF ICMP ttl error route lookup ping 00:09:34 DEBUG| [stdout] # ########################################################################### 00:09:34 DEBUG| [stdout] # 00:09:36 DEBUG| [stdout] # TEST: Basic IPv4 connectivity [ OK ] 00:09:36 DEBUG| [stdout] # TEST: Ping received ICMP ttl exceeded [ OK ] 00:09:36 DEBUG| [stdout] # 00:09:36 DEBUG| [stdout] # ########################################################################### 00:09:36 DEBUG| [stdout] # IPv4 (asym route): VRF ICMP error route lookup traceroute 00:09:36 DEBUG| [stdout] # ########################################################################### 00:09:36 DEBUG| [stdout] # 00:09:36 DEBUG| [stdout] # SKIP: Could not run IPV4 test without traceroute 00:09:36 DEBUG| [stdout] # 00:09:36 DEBUG| [stdout] # ########################################################################### 00:09:36 DEBUG| [stdout] # IPv6 (sym route): VRF ICMP ttl error route lookup ping 00:09:36 DEBUG| [stdout] # ########################################################################### 00:09:36 DEBUG| [stdout] # 00:09:40 DEBUG| [stdout] # TEST: Basic IPv6 connectivity [FAIL] 00:09:40 DEBUG| [stdout] # TEST: Ping received ICMP Hop limit [ OK ] 00:09:40 DEBUG| [stdout] # 00:09:40 DEBUG| [stdout] # ########################################################################### 00:09:40 DEBUG| [stdout] # IPv6 (sym route): VRF ICMP error route lookup traceroute 00:09:40 DEBUG| [stdout] # ########################################################################### 00:09:40 DEBUG| [stdout] # 00:09:42 DEBUG| [stdout] # TEST: Basic IPv6 connectivity [ OK ] 00:09:42 DEBUG| [stdout] # TEST: Traceroute6 reports a hop on r1 [ OK ] 00:09:42 DEBUG| [stdout] # 00:09:42 DEBUG| [stdout] # ########################################################################### 00:09:42 DEBUG| [stdout] # IPv6 (sym route): VRF ICMP fragmentation error route lookup ping 00:09:42 DEBUG| [stdout] # ########################################################################### 00:09:42 DEBUG| [stdout] # 00:09:45 DEBUG| [stdout] # TEST: Basic IPv6 connectivity [FAIL] 00:09:47 DEBUG| [stdout] # TEST: Ping received ICMP Packet too big [FAIL] 00:09:47 DEBUG| [stdout] # 00:09:47 DEBUG| [stdout] # ########################################################################### 00:09:47 DEBUG| [stdout] # IPv6 (asym route): VRF ICMP ttl error route lookup ping 00:09:47 DEBUG| [stdout] # ########################################################################### 00:09:47 DEBUG| [stdout] # 00:09:49 DEBUG| [stdout] # TEST: Basic IPv6 connectivity [ OK ] 00:09:49 DEBUG| [stdout] # TEST: Ping received ICMP Hop limit [ OK ] 00:09:49 DEBUG| [stdout] # 00:09:49 DEBUG| [stdout] # ########################################################################### 00:09:49 DEBUG| [stdout] # IPv6 (asym route): VRF ICMP error route lookup traceroute 00:09:49 DEBUG| [stdout] # ########################################################################### 00:09:49 DEBUG| [stdout] # 00:09:52 DEBUG| [stdout] # TEST: Basic IPv6 connectivity [ OK ] 00:09:52 DEBUG| [stdout] # TEST: Traceroute6 reports a hop on r1 [ OK ] 00:09:52 DEBUG| [stdout] # 00:09:52 DEBUG| [stdout] # Tests passed: 13 00:09:52 DEBUG| [stdout] # Tests failed: 3 00:09:52 DEBUG| [stdout] not ok 45 selftests: net: vrf_route_leaking.sh # exit=1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1928890/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
