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 ]
[ 1070.868509] 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 ]
[ 1073.429374] tc (18454) used greatest stack depth: 11552 bytes left
[ 1075.647627] ping (18577) used greatest stack depth: 11512 bytes left
# TEST: mirred_egress_to_ingress (skip_hw)                            [ OK ]
# [ 1078.804242] 
[ 1078.804370] ============================================
[ 1078.804680] WARNING: possible recursive locking detected
[ 1078.805001] 6.8.0-rc1-virtme #1 Not tainted
[ 1078.805238] --------------------------------------------
[ 1078.805565] ncat/18711 is trying to acquire lock:
[ 1078.805842] ffff94ff02a100b0 (slock-AF_INET/1){+.-.}-{2:2}, at: tcp_v4_rcv+0xdb5/0xef0
[ 1078.806297] 
[ 1078.806297] but task is already holding lock:
[ 1078.806627] ffff94ff02a10cb0 (slock-AF_INET/1){+.-.}-{2:2}, at: tcp_v4_rcv+0xdb5/0xef0
[ 1078.807075] 
[ 1078.807075] other info that might help us debug this:
[ 1078.807461]  Possible unsafe locking scenario:
[ 1078.807461] 
[ 1078.807800]        CPU0
[ 1078.807946]        ----
[ 1078.808101]   lock(slock-AF_INET/1);
[ 1078.808321]   lock(slock-AF_INET/1);
[ 1078.808540] 
[ 1078.808540]  *** DEADLOCK ***
[ 1078.808540] 
[ 1078.808887]  May be due to missing lock nesting notation
[ 1078.808887] 
[ 1078.809281] 8 locks held by ncat/18711:
[ 1078.809514]  #0: ffffffffa37678c0 (rcu_read_lock){....}-{1:2}, at: process_backlog+0x6f/0x260
[ 1078.810023]  #1: ffffffffa37678c0 (rcu_read_lock){....}-{1:2}, at: ip_local_deliver_finish+0x6f/0x180
[ 1078.810542]  #2: ffff94ff02a10cb0 (slock-AF_INET/1){+.-.}-{2:2}, at: tcp_v4_rcv+0xdb5/0xef0
[ 1078.811014]  #3: ffffffffa37678c0 (rcu_read_lock){....}-{1:2}, at: __ip_queue_xmit+0x3f/0x6f0
[ 1078.811514]  #4: ffffffffa37678c0 (rcu_read_lock){....}-{1:2}, at: ip_finish_output2+0xc6/0xa20
[ 1078.812006]  #5: ffffffffa3767880 (rcu_read_lock_bh){....}-{1:2}, at: __dev_queue_xmit+0x6e/0x1180
[ 1078.812514]  #6: ffffffffa37678c0 (rcu_read_lock){....}-{1:2}, at: netif_receive_skb+0x58/0x2c0
[ 1078.813023]  #7: ffffffffa37678c0 (rcu_read_lock){....}-{1:2}, at: ip_local_deliver_finish+0x6f/0x180
[ 1078.813510] 
[ 1078.813510] stack backtrace:
[ 1078.813761] CPU: 2 PID: 18711 Comm: ncat Not tainted 6.8.0-rc1-virtme #1
[ 1078.814148] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1078.814770] Call Trace:
[ 1078.814917]  <IRQ>
[ 1078.815057]  dump_stack_lvl+0x4b/0x80
[ 1078.815271]  __lock_acquire+0x1215/0x1750
[ 1078.815516]  ? sk_filter_trim_cap+0x53/0x360
[ 1078.815773]  lock_acquire+0xc1/0x2b0
[ 1078.815979]  ? tcp_v4_rcv+0xdb5/0xef0
[ 1078.816190]  ? sk_filter_trim_cap+0x11a/0x360
[ 1078.816482]  _raw_spin_lock_nested+0x2e/0x40
[ 1078.816731]  ? tcp_v4_rcv+0xdb5/0xef0
[ 1078.816942]  tcp_v4_rcv+0xdb5/0xef0
[ 1078.817171]  ip_protocol_deliver_rcu+0x4b/0x1e0
[ 1078.817446]  ip_local_deliver_finish+0xaf/0x180
[ 1078.817728]  __netif_receive_skb_one_core+0x8b/0xa0
[ 1078.818012]  netif_receive_skb+0x87/0x2c0
[ 1078.818271]  tcf_mirred_to_dev+0x1f6/0x410 [act_mirred]
[ 1078.818581]  tcf_mirred_act+0xee/0x560 [act_mirred]
[ 1078.818868]  ? tcf_skbedit_act+0x1d6/0x410 [act_skbedit]
[ 1078.819158]  tcf_action_exec+0xaf/0x230
[ 1078.819388]  fl_classify+0x20e/0x260 [cls_flower]
[ 1078.819657]  ? __pfx_usage_match+0x10/0x10
[ 1078.819926]  ? __bfs+0xf6/0x240
[ 1078.820120]  ? check_irq_usage+0x19c/0xc40
[ 1078.820363]  ? __skb_flow_dissect+0xc9/0x2d60
[ 1078.820644]  ? check_path.constprop.0+0x24/0x50
[ 1078.820923]  ? check_noncircular+0x81/0x150
[ 1078.821179]  ? __skb_flow_dissect+0x2fb/0x2d60
[ 1078.821442]  ? __lock_acquire+0xa6e/0x1750
[ 1078.821688]  tcf_classify+0x17d/0x540
[ 1078.821935]  tc_run+0x9f/0x150
[ 1078.822130]  __dev_queue_xmit+0x311/0x1180
[ 1078.822367]  ? mark_held_locks+0x49/0x80
[ 1078.822599]  ? eth_header+0x2a/0xc0
[ 1078.822847]  ip_finish_output2+0x230/0xa20
[ 1078.823091]  ? ip_skb_dst_mtu+0x51/0x1c0
[ 1078.823326]  ? __ip_queue_xmit+0x1d5/0x6f0
[ 1078.823566]  __ip_queue_xmit+0x1d5/0x6f0
[ 1078.823816]  __tcp_transmit_skb+0xb65/0xd30
[ 1078.824054]  ? __alloc_skb+0xdc/0x1a0
[ 1078.824256]  tcp_rcv_state_process+0x4f3/0x11f0
[ 1078.824498]  ? tcp_v4_rcv+0xdb5/0xef0
[ 1078.824726]  ? tcp_v4_do_rcv+0x64/0x360
[ 1078.824944]  tcp_v4_do_rcv+0x64/0x360
[ 1078.825159]  tcp_v4_rcv+0xe4f/0xef0
[ 1078.825358]  ? process_backlog+0x6f/0x260
[ 1078.825610]  ip_protocol_deliver_rcu+0x4b/0x1e0
[ 1078.825864]  ip_local_deliver_finish+0xaf/0x180
[ 1078.826142]  __netif_receive_skb_one_core+0x8b/0xa0
[ 1078.826416]  process_backlog+0x7c/0x260
[ 1078.826645]  __napi_poll.constprop.0+0x2a/0x1e0
[ 1078.826901]  net_rx_action+0x2be/0x340
[ 1078.827135]  __do_softirq+0xcb/0x37a
[ 1078.827348]  ? tcp_recvmsg+0x80/0x200
[ 1078.827550]  do_softirq+0x4d/0x90
[ 1078.827770]  </IRQ>
[ 1078.827896]  <TASK>
[ 1078.828038]  __local_bh_enable_ip+0xbf/0xe0
[ 1078.828274]  tcp_recvmsg+0x80/0x200
[ 1078.828485]  inet_recvmsg+0x70/0x260
[ 1078.828694]  __sys_recvfrom+0x168/0x1a0
[ 1078.828914]  ? do_pselect.constprop.0+0xde/0x170
[ 1078.829187]  ? task_mm_cid_work+0x18b/0x3c0
[ 1078.829431]  __x64_sys_recvfrom+0x24/0x30
[ 1078.829669]  do_syscall_64+0xcc/0x1e0
[ 1078.829887]  entry_SYSCALL_64_after_hwframe+0x6f/0x77
[ 1078.830192] RIP: 0033:0x7f76f34524c0
[ 1078.830397] Code: 84 00 00 00 00 00 0f 1f 40 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 1d 45 31 c9 45 31 c0 b8 2d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 68 c3 0f 1f 80 00 00 00 00 41 54 48 83 ec 20
[ 1078.831400] RSP: 002b:00007ffc11840a68 EFLAGS: 00000246 ORIG_RAX: 000000000000002d
[ 1078.831840] RAX: ffffffffffffffda RBX: 00005608cd1cda20 RCX: 00007f76f34524c0
[ 1078.832235] RDX: 0000000000002000 RSI: 00007ffc11840af0 RDI: 0000000000000008
[ 1078.832646] RBP: 00007ffc11840af0 R08: 0000000000000000 R09: 0000000000000000
[ 1078.833063] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008
[ 1078.833477] R13: 00005608cd1cda20 R14: 0000000000000000 R15: 00007ffc11840aec
[ 1078.833885]  </TASK>
[ 1111.031094] ncat (18712) 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__->