Test for bug added with kernel commit c03d278fdf35 ("netfilter: nf_tables: wait for rcu grace period on net_device removal") Signed-off-by: Florian Westphal <fw@xxxxxxxxx> --- .../dumps/netdev_chain_dev_addremove.nodump | 0 .../chains/netdev_chain_dev_addremove | 48 +++++++++++++++++++ 2 files changed, 48 insertions(+) create mode 100644 tests/shell/testcases/chains/dumps/netdev_chain_dev_addremove.nodump create mode 100755 tests/shell/testcases/chains/netdev_chain_dev_addremove diff --git a/tests/shell/testcases/chains/dumps/netdev_chain_dev_addremove.nodump b/tests/shell/testcases/chains/dumps/netdev_chain_dev_addremove.nodump new file mode 100644 index 000000000000..e69de29bb2d1 diff --git a/tests/shell/testcases/chains/netdev_chain_dev_addremove b/tests/shell/testcases/chains/netdev_chain_dev_addremove new file mode 100755 index 000000000000..14260d54b778 --- /dev/null +++ b/tests/shell/testcases/chains/netdev_chain_dev_addremove @@ -0,0 +1,48 @@ +#!/bin/bash + +# NFT_TEST_REQUIRES(NFT_TEST_HAVE_inet_ingress) + +set -e + +iface_cleanup() { + ip link del d0 &>/dev/null || : +} +trap 'iface_cleanup' EXIT + +load_rules() +{ +$NFT -f - <<EOF +add table netdev nm-mlag-dummy0 +add set netdev nm-mlag-dummy0 macset-tagged { typeof ether saddr . vlan id; size 65535; flags dynamic,timeout; } +add set netdev nm-mlag-dummy0 macset-untagged { typeof ether saddr; size 65535; flags dynamic,timeout; } +add chain netdev nm-mlag-dummy0 tx-snoop-source-mac { type filter hook egress devices = { dummy0 } priority filter; policy accept; } +add rule netdev nm-mlag-dummy0 tx-snoop-source-mac update @macset-tagged { ether saddr . vlan id timeout 5s } return +add rule netdev nm-mlag-dummy0 tx-snoop-source-mac update @macset-untagged { ether saddr timeout 5s } +add chain netdev nm-mlag-dummy0 rx-drop-looped-packets { type filter hook ingress devices = { dummy0 } priority filter; policy accept; } +add rule netdev nm-mlag-dummy0 rx-drop-looped-packets ether saddr . vlan id @macset-tagged drop +add rule netdev nm-mlag-dummy0 rx-drop-looped-packets ether type 8021q return +add rule netdev nm-mlag-dummy0 rx-drop-looped-packets ether saddr @macset-untagged drop +EOF +} + +for i in $(seq 1 500);do + read taint < /proc/sys/kernel/tainted + if [ "$taint" -ne 0 ]; then + exit 1 + fi + ip link add dummy0 type dummy + load_rules + + # zap ruleset and down device at same time + $NFT flush ruleset & + ip link del dummy0 & + wait +done + +read taint < /proc/sys/kernel/tainted + +if [ "$taint" -ne 0 ]; then + exit 1 +fi + +exit 0 -- 2.45.2