====================================== | [ 16.883549] #6: ffffffffab3678c0 (rcu_read_lock){....}-{1:2}, at: netif_receive_skb (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5729 net/core/dev.c:5801) | [ 16.884010] #7: ffffffffab3678c0 (rcu_read_lock){....}-{1:2}, at: ip_local_deliver_finish (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/ipv4/ip_input.c:232) | [ 16.884478] | [ 16.884478] stack backtrace: [ 16.885074] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 16.885649] Call Trace: [ 16.885796] [ 16.885922] dump_stack_lvl (lib/dump_stack.c:108) [ 16.886126] __lock_acquire (kernel/locking/lockdep.c:5138) [ 16.886341] ? sk_filter_trim_cap (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/filter.c:151) [ 16.886581] lock_acquire (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756 kernel/locking/lockdep.c:5719) [ 16.886778] ? tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2512 net/ipv4/tcp_ipv4.c:2327) [ 16.886986] ? sk_filter_trim_cap (net/core/filter.c:165) [ 16.887221] _raw_spin_lock_nested (kernel/locking/spinlock.c:379) [ 16.887465] ? tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2512 net/ipv4/tcp_ipv4.c:2327) [ 16.887669] tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2512 net/ipv4/tcp_ipv4.c:2327) [ 16.887872] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 1)) [ 16.888113] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) [ 16.888358] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) [ 16.888626] netif_receive_skb (net/core/dev.c:5742 net/core/dev.c:5801) [ 16.888844] tcf_mirred_to_dev (net/sched/act_mirred.c:327) act_mirred [ 16.889131] tcf_mirred_act (net/sched/act_mirred.c:459 (discriminator 2)) act_mirred [ 16.889402] ? tcf_skbedit_act (net/sched/act_skbedit.c:51 (discriminator 3)) act_skbedit [ 16.889691] tcf_action_exec (./include/net/tc_wrapper.h:130 net/sched/act_api.c:1100 net/sched/act_api.c:1074) [ 16.889902] fl_classify (net/sched/cls_flower.c:345) cls_flower [ 16.890164] ? __bfs (kernel/locking/lockdep.c:1787) [ 16.890353] ? check_irq_usage (kernel/locking/lockdep.c:2823) [ 16.890576] ? check_path.constprop.0 (kernel/locking/lockdep.c:2145) [ 16.890819] ? check_noncircular (kernel/locking/lockdep.c:2172) [ 16.891054] ? check_irq_usage (kernel/locking/lockdep.c:2823) [ 16.891268] ? __lock_acquire (kernel/locking/lockdep.c:5133 (discriminator 1)) [ 16.891499] tcf_classify (./include/net/tc_wrapper.h:197 net/sched/cls_api.c:1734 net/sched/cls_api.c:1830) [ 16.891696] tc_run (net/core/dev.c:3945) [ 16.891876] __dev_queue_xmit (net/core/dev.c:4069 net/core/dev.c:4301) [ 16.892102] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 16.892309] ? eth_header (net/ethernet/eth.c:85) [ 16.892508] ip_finish_output2 (./include/net/neighbour.h:542 net/ipv4/ip_output.c:235) [ 16.892735] ? __ip_queue_xmit (net/ipv4/ip_output.c:535) [ 16.892966] __ip_queue_xmit (net/ipv4/ip_output.c:535) [ 16.893182] __tcp_transmit_skb (net/ipv4/tcp_output.c:1462 (discriminator 4)) [ 16.893414] tcp_write_xmit (net/ipv4/tcp_output.c:2792) [ 16.893625] __tcp_push_pending_frames (net/ipv4/tcp_output.c:2977) [ 16.893866] tcp_rcv_state_process (net/ipv4/tcp_input.c:5654 net/ipv4/tcp_input.c:6881) [ 16.894124] ? lock_acquire (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756 kernel/locking/lockdep.c:5719) [ 16.894337] ? tcp_v4_rcv (./include/linux/skbuff.h:1624 ./include/net/tcp.h:2512 net/ipv4/tcp_ipv4.c:2327) [ 16.894543] ? tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1930) [ 16.894754] ? lock_is_held_type (kernel/locking/lockdep.c:5495 kernel/locking/lockdep.c:5825) [ 16.894975] tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1930) [ 16.895188] tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2330) [ 16.895389] ? process_backlog (net/core/dev.c:5978 (discriminator 2)) [ 16.895603] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 1)) [ 16.895858] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) [ 16.896095] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) [ 16.896355] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:5985) [ 16.896571] __napi_poll.constprop.0 (net/core/dev.c:6584) [ 16.896808] net_rx_action (net/core/dev.c:6655 net/core/dev.c:6786) [ 16.897012] __do_softirq (kernel/softirq.c:553) [ 16.897213] irq_exit_rcu (kernel/softirq.c:427 kernel/softirq.c:632 kernel/softirq.c:644) [ 16.897413] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) [ 16.897662] [ 16.897788] [ 16.897917] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) [ 16.898192] RIP: 0010:default_idle (./arch/x86/include/asm/irqflags.h:37 ./arch/x86/include/asm/irqflags.h:72 arch/x86/kernel/process.c:743) [ 16.898423] Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d d3 2d 40 00 fb f4 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 All code ======== 0: 4c 01 c7 add %r8,%rdi 3: 4c 29 c2 sub %r8,%rdx 6: e9 72 ff ff ff jmp 0xffffffffffffff7d b: 90 nop c: 90 nop d: 90 nop e: 90 nop f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: f3 0f 1e fa endbr64 1f: 66 90 xchg %ax,%ax 21: 0f 00 2d d3 2d 40 00 verw 0x402dd3(%rip) # 0x402dfb 28: fb sti 29: f4 hlt 2a:* fa cli <-- trapping instruction 2b: c3 ret 2c: cc int3 2d: cc int3 2e: cc int3 2f: cc int3 30: 66 66 2e 0f 1f 84 00 data16 cs nopw 0x0(%rax,%rax,1) 37: 00 00 00 00 3b: 90 nop 3c: 90 nop 3d: 90 nop 3e: 90 nop 3f: 90 nop Code starting with the faulting instruction =========================================== 0: fa cli 1: c3 ret 2: cc int3 3: cc int3 4: cc int3 5: cc int3 6: 66 66 2e 0f 1f 84 00 data16 cs nopw 0x0(%rax,%rax,1) d: 00 00 00 00 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop [ 16.899366] RSP: 0018:ffffbe15800b3ee8 EFLAGS: 00000246 [ 16.899650] RAX: 000000000006c495 RBX: ffff987b8133c280 RCX: 4000000000000000 [ 16.900021] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa99a8863 [ 16.900422] RBP: 0000000000000003 R08: 0000000000000001 R09: 0000000000000001 [ 16.900784] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000 [ 16.901165] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 16.901534] ? do_idle (kernel/sched/idle.c:171 kernel/sched/idle.c:312) [ 16.901726] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:98) [ 16.901942] do_idle (kernel/sched/idle.c:171 kernel/sched/idle.c:312) [ 16.902159] ? finish_task_switch.isra.0 (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:77 kernel/sched/sched.h:1397 kernel/sched/core.c:5154 kernel/sched/core.c:5272) [ 16.902428] cpu_startup_entry (kernel/sched/idle.c:409 (discriminator 1)) [ 16.902648] start_secondary (arch/x86/kernel/smpboot.c:336) Finger prints: dump_stack_lvl:__lock_acquire:lock_acquire:_raw_spin_lock_nested