====================================== | [ 1202.430459] #6: ffffffffba1678c0 (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) | [ 1202.430940] #7: ffffffffba1678c0 (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) | [ 1202.431427] | [ 1202.431427] stack backtrace: [ 1202.432020] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1202.432695] Call Trace: [ 1202.432845] [ 1202.432977] dump_stack_lvl (lib/dump_stack.c:108) [ 1202.433201] __lock_acquire (kernel/locking/lockdep.c:5138) [ 1202.433424] ? sk_filter_trim_cap (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/filter.c:151) [ 1202.433667] lock_acquire (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756 kernel/locking/lockdep.c:5719) [ 1202.433862] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2512 net/ipv4/tcp_ipv4.c:2327) [ 1202.434101] ? sk_filter_trim_cap (net/core/filter.c:165) [ 1202.434349] _raw_spin_lock_nested (kernel/locking/spinlock.c:379) [ 1202.434586] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2512 net/ipv4/tcp_ipv4.c:2327) [ 1202.434794] tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2512 net/ipv4/tcp_ipv4.c:2327) [ 1202.435001] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 1)) [ 1202.435248] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) [ 1202.435503] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) [ 1202.435773] netif_receive_skb (net/core/dev.c:5742 net/core/dev.c:5801) [ 1202.436003] tcf_mirred_to_dev (net/sched/act_mirred.c:329) act_mirred [ 1202.436304] tcf_mirred_act (net/sched/act_mirred.c:461 (discriminator 2)) act_mirred [ 1202.436567] ? tcf_skbedit_act (net/sched/act_skbedit.c:51 (discriminator 3)) act_skbedit [ 1202.436849] tcf_action_exec (./include/net/tc_wrapper.h:130 net/sched/act_api.c:1100 net/sched/act_api.c:1074) [ 1202.437068] fl_classify (net/sched/cls_flower.c:345) cls_flower [ 1202.437322] ? __bfs (kernel/locking/lockdep.c:1787) [ 1202.437505] ? check_irq_usage (kernel/locking/lockdep.c:2823) [ 1202.437726] ? check_path.constprop.0 (kernel/locking/lockdep.c:2145) [ 1202.437970] ? check_noncircular (kernel/locking/lockdep.c:2172) [ 1202.438212] ? check_irq_usage (kernel/locking/lockdep.c:2823) [ 1202.438440] ? __lock_acquire (kernel/locking/lockdep.c:5133 (discriminator 1)) [ 1202.438664] tcf_classify (./include/net/tc_wrapper.h:197 net/sched/cls_api.c:1734 net/sched/cls_api.c:1830) [ 1202.438862] tc_run (net/core/dev.c:3945) [ 1202.439049] __dev_queue_xmit (net/core/dev.c:4069 net/core/dev.c:4301) [ 1202.439262] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 1202.439471] ? eth_header (net/ethernet/eth.c:85) [ 1202.439662] ip_finish_output2 (./include/net/neighbour.h:542 net/ipv4/ip_output.c:235) [ 1202.439898] ? __ip_queue_xmit (net/ipv4/ip_output.c:535) [ 1202.440120] __ip_queue_xmit (net/ipv4/ip_output.c:535) [ 1202.440378] __tcp_transmit_skb (net/ipv4/tcp_output.c:1462 (discriminator 4)) [ 1202.440609] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 1202.440841] tcp_write_xmit (net/ipv4/tcp_output.c:2792) [ 1202.441068] ? tcp_current_mss (./include/net/dst.h:216 net/ipv4/tcp_output.c:1864) [ 1202.441287] __tcp_push_pending_frames (net/ipv4/tcp_output.c:2977) [ 1202.441540] tcp_rcv_state_process (net/ipv4/tcp_input.c:5654 net/ipv4/tcp_input.c:6881) [ 1202.441782] ? lock_acquire (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756 kernel/locking/lockdep.c:5719) [ 1202.441997] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2512 net/ipv4/tcp_ipv4.c:2327) [ 1202.442189] ? tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1930) [ 1202.442399] ? lock_is_held_type (kernel/locking/lockdep.c:5495 kernel/locking/lockdep.c:5825) [ 1202.442629] tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1930) [ 1202.442821] tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2330) [ 1202.443005] ? process_backlog (net/core/dev.c:5978 (discriminator 2)) [ 1202.443217] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 1)) [ 1202.443473] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) [ 1202.443721] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) [ 1202.443984] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:5985) [ 1202.444198] __napi_poll.constprop.0 (net/core/dev.c:6584) [ 1202.444471] net_rx_action (net/core/dev.c:6655 net/core/dev.c:6786) [ 1202.444679] __do_softirq (kernel/softirq.c:553) [ 1202.444877] irq_exit_rcu (kernel/softirq.c:427 kernel/softirq.c:632 kernel/softirq.c:644) [ 1202.445076] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) [ 1202.445334] [ 1202.445464] [ 1202.445589] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) [ 1202.445867] RIP: 0010:default_idle (./arch/x86/include/asm/irqflags.h:37 ./arch/x86/include/asm/irqflags.h:72 arch/x86/kernel/process.c:743) [ 1202.446091] 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 [ 1202.447069] RSP: 0018:ffffaf2c800b3ee8 EFLAGS: 00000246 [ 1202.447428] RAX: 00000000033694cf RBX: ffff936d0133c280 RCX: 4000000000000000 [ 1202.447876] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb87a8863 [ 1202.448338] RBP: 0000000000000003 R08: 0000000000000001 R09: 0000000000000001 [ 1202.448846] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000 [ 1202.449352] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 1202.449883] ? do_idle (kernel/sched/idle.c:171 kernel/sched/idle.c:312) [ 1202.450145] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:98) [ 1202.450515] do_idle (kernel/sched/idle.c:171 kernel/sched/idle.c:312) [ 1202.450772] ? 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) [ 1202.451141] cpu_startup_entry (kernel/sched/idle.c:409 (discriminator 1)) [ 1202.451437] start_secondary (arch/x86/kernel/smpboot.c:336) Finger prints: dump_stack_lvl:__lock_acquire:lock_acquire:_raw_spin_lock_nested