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 10800 # selftests: net/forwarding: tc_actions.sh # TEST: gact drop and ok (skip_hw) [ OK ] [ 1142.307874] 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 ] [ 1147.113083] ping (5490) used greatest stack depth: 11512 bytes left # TEST: mirred_egress_to_ingress (skip_hw) [ OK ] # [ 1151.184823] [ 1151.184964] ============================================ [ 1151.185254] WARNING: possible recursive locking detected [ 1151.185542] 6.8.0-rc2-virtme #1 Not tainted [ 1151.185776] -------------------------------------------- [ 1151.186053] ksoftirqd/2/27 is trying to acquire lock: [ 1151.186331] ffff98edc2b60cb0 (slock-AF_INET/1){+.-.}-{2:2}, at: tcp_v4_rcv+0xdb5/0xef0 [ 1151.186763] [ 1151.186763] but task is already holding lock: [ 1151.187061] ffff98edc2b600b0 (slock-AF_INET/1){+.-.}-{2:2}, at: tcp_v4_rcv+0xdb5/0xef0 [ 1151.187482] [ 1151.187482] other info that might help us debug this: [ 1151.187819] Possible unsafe locking scenario: [ 1151.187819] [ 1151.188215] CPU0 [ 1151.188427] ---- [ 1151.188645] lock(slock-AF_INET/1); [ 1151.188877] lock(slock-AF_INET/1); [ 1151.189110] [ 1151.189110] *** DEADLOCK *** [ 1151.189110] [ 1151.189528] May be due to missing lock nesting notation [ 1151.189528] [ 1151.189943] 8 locks held by ksoftirqd/2/27: [ 1151.190258] #0: ffffffff985678c0 (rcu_read_lock){....}-{1:2}, at: process_backlog+0x6f/0x260 [ 1151.190901] #1: ffffffff985678c0 (rcu_read_lock){....}-{1:2}, at: ip_local_deliver_finish+0x6f/0x180 [ 1151.191619] #2: ffff98edc2b600b0 (slock-AF_INET/1){+.-.}-{2:2}, at: tcp_v4_rcv+0xdb5/0xef0 [ 1151.192275] #3: ffffffff985678c0 (rcu_read_lock){....}-{1:2}, at: __ip_queue_xmit+0x3f/0x6f0 [ 1151.192922] #4: ffffffff985678c0 (rcu_read_lock){....}-{1:2}, at: ip_finish_output2+0xc6/0xa20 [ 1151.193598] #5: ffffffff98567880 (rcu_read_lock_bh){....}-{1:2}, at: __dev_queue_xmit+0x6e/0x1180 [ 1151.194292] #6: ffffffff985678c0 (rcu_read_lock){....}-{1:2}, at: netif_receive_skb+0x58/0x2c0 [ 1151.194961] #7: ffffffff985678c0 (rcu_read_lock){....}-{1:2}, at: ip_local_deliver_finish+0x6f/0x180 [ 1151.195515] [ 1151.195515] stack backtrace: [ 1151.195822] CPU: 2 PID: 27 Comm: ksoftirqd/2 Not tainted 6.8.0-rc2-virtme #1 [ 1151.196375] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1151.197241] Call Trace: [ 1151.197455] [ 1151.197653] dump_stack_lvl+0x4b/0x80 [ 1151.197960] __lock_acquire+0x1215/0x1750 [ 1151.198275] ? sk_filter_trim_cap+0x53/0x360 [ 1151.198627] lock_acquire+0xc1/0x2b0 [ 1151.198912] ? tcp_v4_rcv+0xdb5/0xef0 [ 1151.199199] ? sk_filter_trim_cap+0x11a/0x360 [ 1151.199558] _raw_spin_lock_nested+0x2e/0x40 [ 1151.199895] ? tcp_v4_rcv+0xdb5/0xef0 [ 1151.200182] tcp_v4_rcv+0xdb5/0xef0 [ 1151.200480] ip_protocol_deliver_rcu+0x4b/0x1e0 [ 1151.200836] ip_local_deliver_finish+0xaf/0x180 [ 1151.201209] __netif_receive_skb_one_core+0x8b/0xa0 [ 1151.201593] netif_receive_skb+0x87/0x2c0 [ 1151.201824] tcf_mirred_to_dev+0x1f6/0x410 [act_mirred] [ 1151.202099] tcf_mirred_act+0xee/0x560 [act_mirred] [ 1151.202377] ? tcf_skbedit_act+0x1d6/0x410 [act_skbedit] [ 1151.202711] tcf_action_exec+0xac/0x230 [ 1151.202985] fl_classify+0x20e/0x260 [cls_flower] [ 1151.203246] ? fl_mask_lookup+0x17e/0x5a0 [cls_flower] [ 1151.203531] ? __bfs+0xf3/0x240 [ 1151.203718] ? check_irq_usage+0x19c/0xc40 [ 1151.203933] ? check_path.constprop.0+0x24/0x50 [ 1151.204184] ? check_noncircular+0x81/0x150 [ 1151.204403] ? lock_release+0xbe/0x270 [ 1151.204653] ? __lock_acquire+0xa6e/0x1750 [ 1151.204889] tcf_classify+0x17a/0x540 [ 1151.205114] tc_run+0x9f/0x150 [ 1151.205286] __dev_queue_xmit+0x311/0x1180 [ 1151.205541] ? mark_held_locks+0x49/0x80 [ 1151.205752] ip_finish_output2+0x39f/0xa20 [ 1151.205979] ? __ip_queue_xmit+0x1d5/0x6f0 [ 1151.206209] __ip_queue_xmit+0x1d5/0x6f0 [ 1151.206429] __tcp_transmit_skb+0xb65/0xd30 [ 1151.206682] ? mark_held_locks+0x49/0x80 [ 1151.206917] tcp_write_xmit+0x492/0x1400 [ 1151.207141] __tcp_push_pending_frames+0x36/0xc0 [ 1151.207409] tcp_rcv_state_process+0x4d3/0x11f0 [ 1151.207654] ? tcp_v4_rcv+0xdb5/0xef0 [ 1151.207876] ? tcp_v4_do_rcv+0x64/0x360 [ 1151.208084] tcp_v4_do_rcv+0x64/0x360 [ 1151.208303] tcp_v4_rcv+0xe4f/0xef0 [ 1151.208501] ? process_backlog+0x6f/0x260 [ 1151.208739] ip_protocol_deliver_rcu+0x4b/0x1e0 [ 1151.208981] ip_local_deliver_finish+0xaf/0x180 [ 1151.209248] __netif_receive_skb_one_core+0x8b/0xa0 [ 1151.209512] process_backlog+0x7c/0x260 [ 1151.209733] __napi_poll.constprop.0+0x27/0x1e0 [ 1151.209970] net_rx_action+0x2be/0x340 [ 1151.210166] __do_softirq+0xc8/0x37a [ 1151.210380] ? __pfx_smpboot_thread_fn+0x10/0x10 [ 1151.210658] run_ksoftirqd+0x2e/0x40 [ 1151.210865] smpboot_thread_fn+0xd9/0x1d0 [ 1151.211085] kthread+0xda/0x110 [ 1151.211273] ? __pfx_kthread+0x10/0x10 [ 1151.211485] ret_from_fork+0x31/0x50 [ 1151.211692] ? __pfx_kthread+0x10/0x10 [ 1151.211894] ret_from_fork_asm+0x1b/0x30 [ 1151.212123] [ 1183.521625] ncat (5620) used greatest stack depth: 10680 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__->