make -C tools/testing/selftests TARGETS=net/forwarding TEST_PROGS=tc_actioons.sh TEST_GEN_PROGS="" run_tests make: Entering directory '/home/virtme/testing-2/tools/testing/selftests' make[1]: Entering directory '/home/virtme/testing-2/tools/testing/selftests/net/forwarding' make[1]: Nothing to be done for 'all'. make[1]: Leaving directory '/home/virtme/testing-2/tools/testing/selftests/net/forwarding' make[1]: Entering directory '/home/virtme/testing-2/tools/testing/selftests/net/forwarding' TAP version 13 1..1 # timeout set to 0 # selftests: net/forwarding: tc_actions.sh # TEST: gact drop and ok (skip_hw) [ OK ] [ 1118.033473] Mirror/redirect action on # TEST: mirred egress flower redirect (skip_hw) [ OK ] # TEST: mirred egress flower mirror (skip_hw) [ OK ] # TEST: mirred egress matchall mirror (skip_hw) [ OK ] [ 1122.755248] ping (6976) used greatest stack depth: 11512 bytes left # TEST: mirred_egress_to_ingress (skip_hw) [ OK ] # [ 1127.256985] [ 1127.257148] ============================================ [ 1127.257544] WARNING: possible recursive locking detected [ 1127.257831] 6.8.0-rc1-virtme #1 Not tainted [ 1127.258066] -------------------------------------------- [ 1127.258357] ksoftirqd/2/27 is trying to acquire lock: [ 1127.258644] ffff8dd1093b0cb0 (slock-AF_INET/1){+.-.}-{2:2}, at: tcp_v4_rcv+0xdb5/0xef0 [ 1127.259079] [ 1127.259079] but task is already holding lock: [ 1127.259411] ffff8dd1093b00b0 (slock-AF_INET/1){+.-.}-{2:2}, at: tcp_v4_rcv+0xdb5/0xef0 [ 1127.259834] [ 1127.259834] other info that might help us debug this: [ 1127.260203] Possible unsafe locking scenario: [ 1127.260203] [ 1127.260524] CPU0 [ 1127.260679] ---- [ 1127.260815] lock(slock-AF_INET/1); [ 1127.261030] lock(slock-AF_INET/1); [ 1127.261239] [ 1127.261239] *** DEADLOCK *** [ 1127.261239] [ 1127.261560] May be due to missing lock nesting notation [ 1127.261560] [ 1127.261938] 8 locks held by ksoftirqd/2/27: [ 1127.262184] #0: ffffffffb53678c0 (rcu_read_lock){....}-{1:2}, at: process_backlog+0x6f/0x260 [ 1127.262656] #1: ffffffffb53678c0 (rcu_read_lock){....}-{1:2}, at: ip_local_deliver_finish+0x6f/0x180 [ 1127.263168] #2: ffff8dd1093b00b0 (slock-AF_INET/1){+.-.}-{2:2}, at: tcp_v4_rcv+0xdb5/0xef0 [ 1127.263619] #3: ffffffffb53678c0 (rcu_read_lock){....}-{1:2}, at: __ip_queue_xmit+0x3f/0x6f0 [ 1127.264084] #4: ffffffffb53678c0 (rcu_read_lock){....}-{1:2}, at: ip_finish_output2+0xc6/0xa20 [ 1127.264553] #5: ffffffffb5367880 (rcu_read_lock_bh){....}-{1:2}, at: __dev_queue_xmit+0x6e/0x1180 [ 1127.265041] #6: ffffffffb53678c0 (rcu_read_lock){....}-{1:2}, at: netif_receive_skb+0x58/0x2c0 [ 1127.265515] #7: ffffffffb53678c0 (rcu_read_lock){....}-{1:2}, at: ip_local_deliver_finish+0x6f/0x180 [ 1127.266019] [ 1127.266019] stack backtrace: [ 1127.266275] CPU: 2 PID: 27 Comm: ksoftirqd/2 Not tainted 6.8.0-rc1-virtme #1 [ 1127.266657] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1127.267302] Call Trace: [ 1127.267447] [ 1127.267575] dump_stack_lvl+0x4b/0x80 [ 1127.267788] __lock_acquire+0x1215/0x1750 [ 1127.268022] ? sk_filter_trim_cap+0x53/0x360 [ 1127.268267] lock_acquire+0xc1/0x2b0 [ 1127.268467] ? tcp_v4_rcv+0xdb5/0xef0 [ 1127.268672] ? sk_filter_trim_cap+0x11a/0x360 [ 1127.268936] _raw_spin_lock_nested+0x2e/0x40 [ 1127.269174] ? tcp_v4_rcv+0xdb5/0xef0 [ 1127.269377] tcp_v4_rcv+0xdb5/0xef0 [ 1127.269587] ip_protocol_deliver_rcu+0x4b/0x1e0 [ 1127.269844] ip_local_deliver_finish+0xaf/0x180 [ 1127.270108] __netif_receive_skb_one_core+0x8b/0xa0 [ 1127.270378] netif_receive_skb+0x87/0x2c0 [ 1127.270611] tcf_mirred_to_dev+0x1f6/0x410 [act_mirred] [ 1127.270913] tcf_mirred_act+0xee/0x560 [act_mirred] [ 1127.271190] ? tcf_skbedit_act+0x1d6/0x410 [act_skbedit] [ 1127.271481] tcf_action_exec+0xaf/0x230 [ 1127.271713] fl_classify+0x20e/0x260 [cls_flower] [ 1127.271977] ? fl_mask_lookup+0x17e/0x5a0 [cls_flower] [ 1127.272271] ? __pfx_usage_match+0x10/0x10 [ 1127.272502] ? __bfs+0xf6/0x240 [ 1127.272704] ? check_irq_usage+0x19c/0xc40 [ 1127.272953] ? check_path.constprop.0+0x24/0x50 [ 1127.273209] ? check_noncircular+0x81/0x150 [ 1127.273437] ? __lock_acquire+0xa6e/0x1750 [ 1127.273664] tcf_classify+0x17d/0x540 [ 1127.273878] tc_run+0x9f/0x150 [ 1127.274051] __dev_queue_xmit+0x311/0x1180 [ 1127.274283] ? mark_held_locks+0x49/0x80 [ 1127.274509] ip_finish_output2+0x39f/0xa20 [ 1127.274743] ? __ip_queue_xmit+0x1d5/0x6f0 [ 1127.274983] __ip_queue_xmit+0x1d5/0x6f0 [ 1127.275198] __tcp_transmit_skb+0xb65/0xd30 [ 1127.275432] ? mark_held_locks+0x49/0x80 [ 1127.275659] tcp_write_xmit+0x492/0x1410 [ 1127.275881] __tcp_push_pending_frames+0x36/0xc0 [ 1127.276143] tcp_rcv_state_process+0x4d3/0x11f0 [ 1127.276399] ? tcp_v4_rcv+0xdb5/0xef0 [ 1127.276616] ? tcp_v4_do_rcv+0x64/0x360 [ 1127.276832] tcp_v4_do_rcv+0x64/0x360 [ 1127.277059] tcp_v4_rcv+0xe4f/0xef0 [ 1127.277263] ? process_backlog+0x6f/0x260 [ 1127.277493] ip_protocol_deliver_rcu+0x4b/0x1e0 [ 1127.277738] ip_local_deliver_finish+0xaf/0x180 [ 1127.277988] __netif_receive_skb_one_core+0x8b/0xa0 [ 1127.278263] process_backlog+0x7c/0x260 [ 1127.278478] __napi_poll.constprop.0+0x2a/0x1e0 [ 1127.278737] net_rx_action+0x2be/0x340 [ 1127.278952] __do_softirq+0xcb/0x37a [ 1127.279153] ? __pfx_smpboot_thread_fn+0x10/0x10 [ 1127.279417] run_ksoftirqd+0x2e/0x40 [ 1127.279623] smpboot_thread_fn+0xdc/0x1d0 [ 1127.279858] kthread+0xdd/0x110 [ 1127.280033] ? __pfx_kthread+0x10/0x10 [ 1127.280246] ret_from_fork+0x34/0x50 [ 1127.280453] ? __pfx_kthread+0x10/0x10 [ 1127.280659] ret_from_fork_asm+0x1b/0x30 [ 1127.280885] [ 1166.990378] ncat (7120) used greatest stack depth: 10672 bytes left TEST: mirred_egress_to_ingress_tcp (skip_hw) [ OK ] # INFO: Could not test offloaded functionality ok 1 selftests: net/forwarding: tc_actions.sh make[1]: Leaving directory '/home/virtme/testing-2/tools/testing/selftests/net/forwarding' make: Leaving directory '/home/virtme/testing-2/tools/testing/selftests' xx__-> echo $? 0 xx__->