Re: [PATCH nf] selftests: netfilter: fix transaction test script timeout handling

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On 04. 01. 2023. 12:54, Florian Westphal wrote:
The kselftest framework uses a default timeout of 45 seconds for
all test scripts.

Increase the timeout to two minutes for the netfilter tests, this
should hopefully be enough,

Make sure that, should the script be canceled, the net namespace and
the spawned ping instances are removed.

Reported-by: Mirsad Goran Todorovac <mirsad.todorovac@xxxxxxxxxxxx>
Signed-off-by: Florian Westphal <fw@xxxxxxxxx>
---
  .../selftests/netfilter/nft_trans_stress.sh      | 16 +++++++++-------
  tools/testing/selftests/netfilter/settings       |  1 +
  2 files changed, 10 insertions(+), 7 deletions(-)
  create mode 100644 tools/testing/selftests/netfilter/settings

diff --git a/tools/testing/selftests/netfilter/nft_trans_stress.sh b/tools/testing/selftests/netfilter/nft_trans_stress.sh
index a7f62ad4f661..2ffba45a78bf 100755
--- a/tools/testing/selftests/netfilter/nft_trans_stress.sh
+++ b/tools/testing/selftests/netfilter/nft_trans_stress.sh
@@ -10,12 +10,20 @@
  ksft_skip=4
testns=testns-$(mktemp -u "XXXXXXXX")
+tmp=""
tables="foo bar baz quux"
  global_ret=0
  eret=0
  lret=0
+cleanup() {
+	ip netns pids "$testns" | xargs kill 2>/dev/null
+	ip netns del "$testns"
+
+	rm -f "$tmp"
+}
+
  check_result()
  {
  	local r=$1
@@ -43,6 +51,7 @@ if [ $? -ne 0 ];then
  	exit $ksft_skip
  fi
+trap cleanup EXIT
  tmp=$(mktemp)
for table in $tables; do
@@ -139,11 +148,4 @@ done
check_result $lret "add/delete with nftrace enabled" -pkill -9 ping
-
-wait
-
-rm -f "$tmp"
-ip netns del "$testns"
-
  exit $global_ret
diff --git a/tools/testing/selftests/netfilter/settings b/tools/testing/selftests/netfilter/settings
new file mode 100644
index 000000000000..6091b45d226b
--- /dev/null
+++ b/tools/testing/selftests/netfilter/settings
@@ -0,0 +1 @@
+timeout=120

Hi,

I've tested the patch last night and the problem appears absent.

Here is the excerpt with the subsystem selftest:

make[2]: Entering directory '/home/marvin/linux/kernel/linux_torvalds/tools/testing/selftests/netfilter'
TAP version 13
1..17
# selftests: netfilter: nft_trans_stress.sh
# PASS: nft add/delete test returned 0
# PASS: nft reload test returned 0
# PASS: nft add/delete with nftrace enabled test returned 0
# PASS: nft add/delete with nftrace enabled test returned 0
ok 1 selftests: netfilter: nft_trans_stress.sh
# selftests: netfilter: nft_fib.sh
# PASS: fib expression did not cause unwanted packet drops
# PASS: fib expression did drop packets for 1.1.1.1
# PASS: fib expression did drop packets for 1c3::c01d
# PASS: fib expression forward check with policy based routing
ok 2 selftests: netfilter: nft_fib.sh
# selftests: netfilter: nft_nat.sh
# PASS: netns routing/connectivity: ns0-p9jnhWY0 can reach ns1-p9jnhWY0 and ns2-p9jnhWY0
# PASS: ping to ns1-p9jnhWY0 was ip NATted to ns2-p9jnhWY0
# PASS: ping to ns1-p9jnhWY0 OK after ip nat output chain flush
# PASS: ipv6 ping to ns1-p9jnhWY0 was ip6 NATted to ns2-p9jnhWY0
# timeout: failed to run command ‘socat’: No such file or directory
# timeout: failed to run command ‘socat’: No such file or directory
# ERROR: inet port rewrite
# PASS: ping to ns1-p9jnhWY0 was inet NATted to ns2-p9jnhWY0
# PASS: ping to ns1-p9jnhWY0 OK after inet nat output chain flush
# PASS: ipv6 ping to ns1-p9jnhWY0 was inet NATted to ns2-p9jnhWY0
# PASS: ip IP masquerade  for ns2-p9jnhWY0
# PASS: ip6 IPv6 masquerade  for ns2-p9jnhWY0
# PASS: inet IP masquerade  for ns2-p9jnhWY0
# PASS: inet IPv6 masquerade  for ns2-p9jnhWY0
# PASS: ip IP masquerade fully-random for ns2-p9jnhWY0
# PASS: ip6 IPv6 masquerade fully-random for ns2-p9jnhWY0
# PASS: inet IP masquerade fully-random for ns2-p9jnhWY0
# PASS: inet IPv6 masquerade fully-random for ns2-p9jnhWY0
# PASS: ip IP redirection for ns2-p9jnhWY0
# PASS: ip6 IPv6 redirection for ns2-p9jnhWY0
# PASS: inet IP redirection for ns2-p9jnhWY0
# PASS: inet IPv6 redirection for ns2-p9jnhWY0
# SKIP: Could not run nat port shadowing test without conntrack tool
# SKIP: Could not run stateless nat frag test without socat tool
# FAIL: nftables v1.0.5 (Lester Gooch #4)
not ok 3 selftests: netfilter: nft_nat.sh # exit=1
# selftests: netfilter: bridge_brouter.sh
# PASS: netns connectivity: ns1 and ns2 can reach each other
# ebtables: No chain/target/match by that name
# SKIP: Could not add ebtables broute redirect rule
ok 4 selftests: netfilter: bridge_brouter.sh # SKIP
# selftests: netfilter: conntrack_icmp_related.sh
# PASS: icmp mtu error had RELATED state
# PASS: icmp redirects had RELATED state
ok 5 selftests: netfilter: conntrack_icmp_related.sh
# selftests: netfilter: nft_flowtable.sh
# PASS: netns routing/connectivity: ns1-rSpoqhm9 can reach ns2-rSpoqhm9
# PASS: flow offloaded for ns1/ns2
# PASS: flow offload for ns1/ns2 with masquerade
# PASS: flow offload for ns1/ns2 with dnat ns1 <- ns2
# PASS: flow offload for ns1/ns2 with masquerade and pmtu discovery
# PASS: flow offload for ns1/ns2 with dnat and pmtu discovery ns1 <- ns2
# PASS: flow offload for ns1/ns2 with masquerade and pmtu discovery on bridge
# PASS: flow offload for ns1/ns2 with dnat and pmtu discovery ns1 <- ns2
# PASS: flow offload for ns1/ns2 with masquerade and pmtu discovery bridge and VLAN
# PASS: flow offload for ns1/ns2 with dnat and pmtu discovery ns1 <- ns2
# PASS: ipsec tunnel mode for ns1/ns2
ok 6 selftests: netfilter: nft_flowtable.sh
# selftests: netfilter: ipvs.sh
# SKIP: Could not run test without ipvsadm
ok 7 selftests: netfilter: ipvs.sh # SKIP
# selftests: netfilter: nft_concat_range.sh
# TEST: reported issues
#   Add two elements, flush, re-add                               [ OK ]
#   net,mac with reload                                           [FAIL]
# udp packet to:
#   10.0.0.6
# from:
#   00:01:00:00:07:d1
# should have matched ruleset:
# table inet filter { # handle 2
#       counter test { # handle 2
#               packets 0 bytes 0
#       }
#
#       set test { # handle 3
#               type ipv4_addr . ether_addr
#               flags interval,timeout
#               elements = { 10.0.0.6/31 . 00:01:00:00:07:d1-00:01:00:00:07:d2,
#                            10.0.0.9-10.0.0.11 . 00:01:00:00:07:d4-00:01:00:00:07:d6 }
#       }
#
#       chain input { # handle 1
#               type filter hook prerouting priority filter; policy accept;
#               ip daddr . ether saddr @test counter name "test" # handle 4
#       }
# }
# table netdev perf { # handle 3
#       counter test { # handle 2
#               packets 0 bytes 0
#       }
#
#       counter match { # handle 3
#               packets 0 bytes 0
#       }
#
#       set test { # handle 4
#               type ipv4_addr . ether_addr
#               flags interval
#       }
#
#       set norange { # handle 5
#               type ipv4_addr . ether_addr
#       }
#
#       set noconcat { # handle 6
#               type ipv4_addr
#               flags interval
#       }
#
#       chain test { # handle 1
#               type filter hook ingress device "veth_a" priority filter; policy accept;
#       }
# }
not ok 8 selftests: netfilter: nft_concat_range.sh # exit=1
# selftests: netfilter: nft_conntrack_helper.sh
# SKIP: Could not run test without conntrack tool
ok 9 selftests: netfilter: nft_conntrack_helper.sh # SKIP
# selftests: netfilter: nft_queue.sh
# PASS: ns1-6q0Kh3hs can reach ns2-6q0Kh3hs
# PASS: ip: statement with no listener results in packet drop
# PASS: ip6: statement with no listener results in packet drop
# PASS: Expected and received 10 packets total
# PASS: Expected and received 20 packets total
# PASS: tcp and nfqueue in forward chain
# PASS: tcp via loopback
# PASS: tcp via loopback with connect/close
# PASS: tcp via loopback and re-queueing
# PASS: icmp+nfqueue via vrf
ok 10 selftests: netfilter: nft_queue.sh
# selftests: netfilter: nft_meta.sh
# OK: nftables meta iif/oif counters at expected values
# OK: nftables meta cpu counter at expected values
ok 11 selftests: netfilter: nft_meta.sh
# selftests: netfilter: nf_nat_edemux.sh
# SKIP: Could not run test without iperf3
ok 12 selftests: netfilter: nf_nat_edemux.sh # SKIP
# selftests: netfilter: ipip-conntrack-mtu.sh
# SKIP: Could not run test without socat
ok 13 selftests: netfilter: ipip-conntrack-mtu.sh # SKIP
# selftests: netfilter: conntrack_tcp_unreplied.sh
# INFO: connect ns1-oDzqGeK9 -> ns2-oDzqGeK9 to the virtual ip
# ERROR: ns2-oDzqGeK9 did not pick up tcp connection from peer
not ok 14 selftests: netfilter: conntrack_tcp_unreplied.sh # exit=1
# selftests: netfilter: conntrack_vrf.sh
# FAIL: entry not found in conntrack zone 1
# FAIL: entry not in zone 1 or 2, dumping table
# exec of "conntrack" failed: No such file or directory
# table ip testct {
#       chain rawpre {
#               type filter hook prerouting priority raw; policy accept;
#               iif { "veth0", "tvrf" } counter packets 2 bytes 168 meta nftrace set 1
#               iif "veth0" counter packets 1 bytes 84 ct zone set 1 counter packets 1 bytes 84 return
#               iif "tvrf" counter packets 1 bytes 84 ct zone set 2 counter packets 1 bytes 84 return
#               ip protocol icmp counter packets 0 bytes 0
#               notrack counter packets 0 bytes 0
#       }
#
#       chain rawout {
#               type filter hook output priority raw; policy accept;
#               oif "veth0" counter packets 1 bytes 84 ct zone set 1 counter packets 1 bytes 84 return
#               oif "tvrf" counter packets 1 bytes 84 ct zone set 2 counter packets 1 bytes 84 return
#               notrack counter packets 0 bytes 0
#       }
# }
# exec of "iperf3" failed: No such file or directory
# FAIL: iperf3 connect failure with masquerade + sport rewrite on vrf device
# exec of "iperf3" failed: No such file or directory
# FAIL: iperf3 connect failure with masquerade + sport rewrite on vrf device
# exec of "iperf3" failed: No such file or directory
# FAIL: iperf3 connect failure with masquerade + sport rewrite on veth device
not ok 15 selftests: netfilter: conntrack_vrf.sh # exit=1
# selftests: netfilter: nft_synproxy.sh
# SKIP: Could not run test without iperf3
ok 16 selftests: netfilter: nft_synproxy.sh # SKIP
# selftests: netfilter: rpath.sh
# PASS: netfilter reverse path match works as intended
ok 17 selftests: netfilter: rpath.sh
make[2]: Leaving directory '/home/marvin/linux/kernel/linux_torvalds/tools/testing/selftests/netfilter'

Thank you for addressing this problem with your patch at such a short notice.

Have a nice day, and a Happy New Year :)

Kind regards,
Mirsad

--
Mirsad Goran Todorovac
Sistem inženjer
Grafički fakultet | Akademija likovnih umjetnosti
Sveučilište u Zagrebu
--
System engineer
Faculty of Graphic Arts | Academy of Fine Arts
University of Zagreb, Republic of Croatia
The European Union




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