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 ] # TEST: mirred egress flower redirect (skip_hw) [ OK ] # TEST: mirred egress flower mirror (skip_hw) [ OK ] # TEST: mirred egress matchall mirror (skip_hw) [ OK ] [ 1140.386989] ping (9744) used greatest stack depth: 11512 bytes left # TEST: mirred_egress_to_ingress (skip_hw) [ OK ] # [ 1143.520162] [ 1143.520317] ============================================ [ 1143.520734] WARNING: possible recursive locking detected [ 1143.521137] 6.8.0-rc1-virtme #1 Not tainted [ 1143.521440] -------------------------------------------- [ 1143.521818] ksoftirqd/3/32 is trying to acquire lock: [ 1143.522202] ffff8e0643df8cb0 (slock-AF_INET/1){+.-.}-{2:2}, at: tcp_v4_rcv+0xdb5/0xef0 [ 1143.522808] [ 1143.522808] but task is already holding lock: [ 1143.523251] ffff8e0643df80b0 (slock-AF_INET/1){+.-.}-{2:2}, at: tcp_v4_rcv+0xdb5/0xef0 [ 1143.523834] [ 1143.523834] other info that might help us debug this: [ 1143.524299] Possible unsafe locking scenario: [ 1143.524299] [ 1143.524715] CPU0 [ 1143.524893] ---- [ 1143.525083] lock(slock-AF_INET/1); [ 1143.525324] lock(slock-AF_INET/1); [ 1143.525598] [ 1143.525598] *** DEADLOCK *** [ 1143.525598] [ 1143.525946] May be due to missing lock nesting notation [ 1143.525946] [ 1143.526329] 8 locks held by ksoftirqd/3/32: [ 1143.526552] #0: ffffffff8e1678c0 (rcu_read_lock){....}-{1:2}, at: process_backlog+0x6f/0x260 [ 1143.527029] #1: ffffffff8e1678c0 (rcu_read_lock){....}-{1:2}, at: ip_local_deliver_finish+0x6f/0x180 [ 1143.527561] #2: ffff8e0643df80b0 (slock-AF_INET/1){+.-.}-{2:2}, at: tcp_v4_rcv+0xdb5/0xef0 [ 1143.528115] #3: ffffffff8e1678c0 (rcu_read_lock){....}-{1:2}, at: __ip_queue_xmit+0x3f/0x6f0 [ 1143.528681] #4: ffffffff8e1678c0 (rcu_read_lock){....}-{1:2}, at: ip_finish_output2+0xc6/0xa20 [ 1143.529289] #5: ffffffff8e167880 (rcu_read_lock_bh){....}-{1:2}, at: __dev_queue_xmit+0x6e/0x1180 [ 1143.529812] #6: ffffffff8e1678c0 (rcu_read_lock){....}-{1:2}, at: netif_receive_skb+0x58/0x2c0 [ 1143.530330] #7: ffffffff8e1678c0 (rcu_read_lock){....}-{1:2}, at: ip_local_deliver_finish+0x6f/0x180 [ 1143.530981] [ 1143.530981] stack backtrace: [ 1143.531299] CPU: 3 PID: 32 Comm: ksoftirqd/3 Not tainted 6.8.0-rc1-virtme #1 [ 1143.531768] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1143.532524] Call Trace: [ 1143.532702] [ 1143.532878] dump_stack_lvl+0x4b/0x80 [ 1143.533121] __lock_acquire+0x1215/0x1750 [ 1143.533407] ? sk_filter_trim_cap+0x53/0x360 [ 1143.533713] lock_acquire+0xc1/0x2b0 [ 1143.533967] ? tcp_v4_rcv+0xdb5/0xef0 [ 1143.534223] ? sk_filter_trim_cap+0x11a/0x360 [ 1143.534552] _raw_spin_lock_nested+0x2e/0x40 [ 1143.534860] ? tcp_v4_rcv+0xdb5/0xef0 [ 1143.535132] tcp_v4_rcv+0xdb5/0xef0 [ 1143.535382] ip_protocol_deliver_rcu+0x4b/0x1e0 [ 1143.535695] ip_local_deliver_finish+0xaf/0x180 [ 1143.536027] __netif_receive_skb_one_core+0x8b/0xa0 [ 1143.536362] netif_receive_skb+0x87/0x2c0 [ 1143.536659] tcf_mirred_to_dev+0x1f6/0x410 [act_mirred] [ 1143.537019] tcf_mirred_act+0xee/0x560 [act_mirred] [ 1143.537355] ? tcf_skbedit_act+0x1d6/0x410 [act_skbedit] [ 1143.537723] tcf_action_exec+0xaf/0x230 [ 1143.538006] fl_classify+0x20e/0x260 [cls_flower] [ 1143.538346] ? fl_mask_lookup+0x17e/0x5a0 [cls_flower] [ 1143.538706] ? __pfx_usage_match+0x10/0x10 [ 1143.539001] ? __bfs+0xf6/0x240 [ 1143.539225] ? check_irq_usage+0x19c/0xc40 [ 1143.539504] ? lock_release+0xbe/0x270 [ 1143.539797] ? check_path.constprop.0+0x24/0x50 [ 1143.540113] ? check_noncircular+0x81/0x150 [ 1143.540422] ? lock_release+0xbe/0x270 [ 1143.540689] ? __lock_acquire+0xa6e/0x1750 [ 1143.540948] tcf_classify+0x17d/0x540 [ 1143.541149] tc_run+0x9f/0x150 [ 1143.541384] __dev_queue_xmit+0x311/0x1180 [ 1143.541700] ? mark_held_locks+0x49/0x80 [ 1143.541999] ip_finish_output2+0x39f/0xa20 [ 1143.542319] ? __ip_queue_xmit+0x1d5/0x6f0 [ 1143.542632] __ip_queue_xmit+0x1d5/0x6f0 [ 1143.542943] __tcp_transmit_skb+0xb65/0xd30 [ 1143.543249] tcp_write_xmit+0x492/0x1410 [ 1143.543549] __tcp_push_pending_frames+0x36/0xc0 [ 1143.543903] tcp_rcv_state_process+0x4d3/0x11f0 [ 1143.544247] ? tcp_v4_rcv+0xdb5/0xef0 [ 1143.544531] ? tcp_v4_do_rcv+0x64/0x360 [ 1143.544834] tcp_v4_do_rcv+0x64/0x360 [ 1143.545116] tcp_v4_rcv+0xe4f/0xef0 [ 1143.545392] ? process_backlog+0x6f/0x260 [ 1143.545699] ip_protocol_deliver_rcu+0x4b/0x1e0 [ 1143.546056] ip_local_deliver_finish+0xaf/0x180 [ 1143.546410] __netif_receive_skb_one_core+0x8b/0xa0 [ 1143.546794] process_backlog+0x7c/0x260 [ 1143.547088] __napi_poll.constprop.0+0x2a/0x1e0 [ 1143.547370] net_rx_action+0x2be/0x340 [ 1143.547659] __do_softirq+0xcb/0x37a [ 1143.547887] ? __pfx_smpboot_thread_fn+0x10/0x10 [ 1143.548150] run_ksoftirqd+0x2e/0x40 [ 1143.548357] smpboot_thread_fn+0xdc/0x1d0 [ 1143.548579] kthread+0xdd/0x110 [ 1143.548784] ? __pfx_kthread+0x10/0x10 [ 1143.549001] ret_from_fork+0x34/0x50 [ 1143.549214] ? __pfx_kthread+0x10/0x10 [ 1143.549422] ret_from_fork_asm+0x1b/0x30 [ 1143.549645] [ 1170.362206] ncat (9894) 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__->