====================================== | [ 2050.904766][ C1] #6: ffffffff95d447e0 (rcu_read_lock){....}-{1:2}, at: netif_receive_skb_internal (./include/linux/rcupdate.h:298 (discriminator 16) ./include/linux/rcupdate.h:750 (discriminator 16) net/core/dev.c:5729 (discriminator 16)) | [ 2050.905340][ C1] #7: ffffffff95d447e0 (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) | [ 2050.905927][ C1] | [ 2050.905927][ C1] stack backtrace: [ 2050.906689][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 2050.907368][ C1] Call Trace: [ 2050.907578][ C1] [ 2050.907743][ C1] dump_stack_lvl (lib/dump_stack.c:107) [ 2050.908014][ C1] validate_chain (kernel/locking/lockdep.c:3859) [ 2050.908296][ C1] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 2050.908587][ C1] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 2050.908854][ C1] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 2050.909114][ C1] __lock_acquire (kernel/locking/lockdep.c:5137) [ 2050.909400][ C1] ? lock_downgrade (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:67 ./arch/x86/include/asm/irqflags.h:103 kernel/locking/lockdep.c:5653) [ 2050.909675][ C1] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 2050.909972][ C1] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) [ 2050.910252][ C1] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 2050.910568][ C1] ? __pfx_sk_filter_trim_cap (net/core/filter.c:130) [ 2050.910895][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 2050.911178][ C1] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) [ 2050.911465][ C1] _raw_spin_lock_nested (kernel/locking/spinlock.c:379) [ 2050.911759][ C1] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) [ 2050.912039][ C1] tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) [ 2050.912316][ C1] ? __pfx_tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2162) [ 2050.912607][ C1] ? __pfx_raw_v4_input (net/ipv4/raw.c:165) [ 2050.912908][ C1] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 2050.913258][ C1] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:207 (discriminator 8)) [ 2050.913567][ C1] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) [ 2050.913887][ C1] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) [ 2050.914188][ C1] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) [ 2050.914511][ C1] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1131 ./include/linux/skbuff.h:1183 net/ipv4/ip_input.c:390) [ 2050.914867][ C1] ip_rcv (./include/net/dst.h:461 net/ipv4/ip_input.c:449 ./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:569) [ 2050.915104][ C1] ? handle_irq_event (kernel/irq/internals.h:234 kernel/irq/handle.c:213) [ 2050.915406][ C1] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 2050.915659][ C1] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 2050.915938][ C1] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:94 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) [ 2050.916216][ C1] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 2050.916485][ C1] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) [ 2050.916816][ C1] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5535) [ 2050.917197][ C1] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5535) [ 2050.917575][ C1] netif_receive_skb_internal (net/core/dev.c:5742) [ 2050.917890][ C1] ? __pfx_netif_receive_skb_internal (net/core/dev.c:5721) [ 2050.918247][ C1] ? __copy_skb_header (./include/net/dst.h:290 net/core/skbuff.c:1420) [ 2050.918543][ C1] ? __skb_clone (./arch/x86/include/asm/atomic.h:53 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:992 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:436 (discriminator 4) net/core/skbuff.c:1491 (discriminator 4)) [ 2050.918816][ C1] netif_receive_skb (net/core/dev.c:5801) [ 2050.919109][ C1] tcf_mirred_to_dev (net/sched/act_mirred.c:249 net/sched/act_mirred.c:324) act_mirred [ 2050.919467][ C1] ? __pfx_tcf_skbedit_act (net/sched/act_skbedit.c:43) act_skbedit [ 2050.919836][ C1] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 2050.920103][ C1] tcf_mirred_act (net/sched/act_mirred.c:459 (discriminator 2)) act_mirred [ 2050.920446][ C1] tcf_action_exec.part.0 (./include/net/tc_wrapper.h:130 net/sched/act_api.c:1100) [ 2050.920753][ C1] fl_classify (net/sched/cls_flower.c:345) cls_flower [ 2050.921077][ C1] ? __pfx_fl_classify (net/sched/cls_flower.c:316) cls_flower [ 2050.921435][ C1] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 2050.921694][ C1] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 2050.921960][ C1] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) [ 2050.922252][ C1] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 2050.922499][ C1] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 2050.922802][ C1] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 2050.923078][ C1] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 2050.923349][ C1] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) [ 2050.923625][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 2050.923919][ C1] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 2050.924218][ C1] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 2050.924488][ C1] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 2050.924737][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 2050.925029][ C1] __tcf_classify (./include/net/tc_wrapper.h:197 net/sched/cls_api.c:1734) [ 2050.925310][ C1] tcf_classify (net/sched/cls_api.c:1830) [ 2050.925563][ C1] ? __pfx_tcf_classify (net/sched/cls_api.c:1779) [ 2050.925855][ C1] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 2050.926168][ C1] ? __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:802 net/core/dev.c:4284) [ 2050.926470][ C1] tc_run (net/core/dev.c:3945) [ 2050.926699][ C1] ? handle_irq_event (kernel/irq/internals.h:234 kernel/irq/handle.c:213) [ 2050.926995][ C1] ? __pfx_tc_run (net/core/dev.c:3929) [ 2050.927267][ C1] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 2050.927523][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 2050.927804][ C1] ? __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:802 net/core/dev.c:4284) [ 2050.928113][ C1] __dev_queue_xmit (net/core/dev.c:4069 net/core/dev.c:4301) [ 2050.928408][ C1] ? __pfx___dev_queue_xmit (net/core/dev.c:4268) [ 2050.928711][ C1] ? neigh_hh_output (./include/linux/seqlock.h:227 ./include/linux/seqlock.h:772 ./include/net/neighbour.h:496) [ 2050.929001][ C1] ip_finish_output2 (./include/net/neighbour.h:540 net/ipv4/ip_output.c:235) [ 2050.929300][ C1] ? __pfx_ip_finish_output2 (net/ipv4/ip_output.c:199) [ 2050.929607][ C1] ? __ip_finish_output (./include/linux/skbuff.h:1619 ./include/linux/skbuff.h:4884 net/ipv4/ip_output.c:307 net/ipv4/ip_output.c:295) [ 2050.929907][ C1] ip_output (./include/linux/netfilter.h:303 net/ipv4/ip_output.c:433) [ 2050.930163][ C1] ? __pfx_ip_output (net/ipv4/ip_output.c:427) [ 2050.930447][ C1] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 2050.930758][ C1] ? __do_softirq (./arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:207 ./include/trace/events/irq.h:142 kernel/softirq.c:554) [ 2050.931039][ C1] ? ip_local_out (./include/linux/skbuff.h:1131 ./include/net/dst.h:451 net/ipv4/ip_output.c:129) [ 2050.931317][ C1] __ip_queue_xmit (net/ipv4/ip_output.c:535 (discriminator 4)) [ 2050.931592][ C1] ? __create_object (mm/kmemleak.c:756) [ 2050.931879][ C1] __tcp_transmit_skb (net/ipv4/tcp_output.c:1462 (discriminator 4)) [ 2050.932187][ C1] ? __pfx___tcp_transmit_skb (net/ipv4/tcp_output.c:1283) [ 2050.932510][ C1] ? __tcp_send_ack.part.0 (./include/linux/skbuff.h:1296 net/ipv4/tcp_output.c:4206) [ 2050.932810][ C1] tcp_rcv_state_process (net/ipv4/tcp_input.c:6874) [ 2050.933122][ C1] ? tcp_v4_rcv (./include/linux/skbuff.h:1619 ./include/net/tcp.h:2510 net/ipv4/tcp_ipv4.c:2326) [ 2050.933400][ C1] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 2050.933651][ C1] ? __lock_acquired (kernel/locking/lockdep.c:5992) [ 2050.933945][ C1] ? __pfx_tcp_rcv_state_process (net/ipv4/tcp_input.c:6620) [ 2050.934268][ C1] ? __pfx___lock_acquired (kernel/locking/lockdep.c:5959) [ 2050.934565][ C1] tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1929) [ 2050.934836][ C1] tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2329) [ 2050.935116][ C1] ? __pfx_tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2162) [ 2050.935406][ C1] ? __pfx_raw_v4_input (net/ipv4/raw.c:165) [ 2050.935692][ C1] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 2050.936022][ C1] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:207 (discriminator 8)) [ 2050.936337][ C1] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) [ 2050.936643][ C1] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) [ 2050.936931][ C1] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) [ 2050.937250][ C1] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1131 ./include/linux/skbuff.h:1183 net/ipv4/ip_input.c:390) [ 2050.937622][ C1] ip_rcv (./include/net/dst.h:461 net/ipv4/ip_input.c:449 ./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:569) [ 2050.937858][ C1] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 2050.938127][ C1] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 2050.938428][ C1] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5983) [ 2050.938708][ C1] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 2050.938976][ C1] __netif_receive_skb_one_core (net/core/dev.c:5542 (discriminator 4)) [ 2050.939324][ C1] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5535) [ 2050.939683][ C1] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) [ 2050.940020][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 2050.940279][ C1] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5983) [ 2050.940554][ C1] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:5985) [ 2050.940848][ C1] __napi_poll.constprop.0 (net/core/dev.c:6585) [ 2050.941151][ C1] net_rx_action (net/core/dev.c:6653 net/core/dev.c:6786) [ 2050.941434][ C1] ? __pfx_net_rx_action (net/core/dev.c:6750) [ 2050.941716][ C1] ? handle_irq_event (kernel/irq/internals.h:234 kernel/irq/handle.c:213) [ 2050.942021][ C1] __do_softirq (./arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:207 ./include/trace/events/irq.h:142 kernel/softirq.c:554) [ 2050.942304][ C1] ? tcp_recvmsg (net/ipv4/tcp.c:2580) [ 2050.942561][ C1] do_softirq (kernel/softirq.c:454 kernel/softirq.c:441) [ 2050.942816][ C1] [ 2050.942985][ C1] [ 2050.943180][ C1] __local_bh_enable_ip (kernel/softirq.c:381) [ 2050.943482][ C1] tcp_recvmsg (net/ipv4/tcp.c:2580) [ 2050.943726][ C1] ? __pfx_tcp_recvmsg (net/ipv4/tcp.c:2564) [ 2050.944020][ C1] ? core_sys_select (./arch/x86/include/asm/smap.h:33 ./arch/x86/include/asm/uaccess_64.h:120 ./arch/x86/include/asm/uaccess_64.h:133 ./include/linux/uaccess.h:138 fs/select.c:404 fs/select.c:401 fs/select.c:693) [ 2050.944299][ C1] ? __pfx_core_sys_select (fs/select.c:627) [ 2050.944618][ C1] inet_recvmsg (net/ipv4/af_inet.c:884 (discriminator 8)) [ 2050.944887][ C1] ? __pfx_inet_recvmsg (net/ipv4/af_inet.c:874) [ 2050.945184][ C1] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) [ 2050.945462][ C1] ? sockfd_lookup_light (net/socket.c:558) [ 2050.945754][ C1] __sys_recvfrom (net/socket.c:1046 net/socket.c:1068 net/socket.c:2242) [ 2050.946029][ C1] ? __pfx___sys_recvfrom (net/socket.c:2223) [ 2050.946345][ C1] ? do_pselect.constprop.0 (fs/select.c:764) [ 2050.946673][ C1] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 2050.947063][ C1] __x64_sys_recvfrom (net/socket.c:2256) [ 2050.947355][ C1] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 2050.947722][ C1] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 2050.947992][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 2050.948336][ C1] RIP: 0033:0x7f84847ab4c0 [ 2050.948589][ C1] 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 All code ======== 0: 84 00 test %al,(%rax) 2: 00 00 add %al,(%rax) 4: 00 00 add %al,(%rax) 6: 0f 1f 40 00 nopl 0x0(%rax) a: f3 0f 1e fa endbr64 e: 41 89 ca mov %ecx,%r10d 11: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax 18: 00 19: 85 c0 test %eax,%eax 1b: 75 1d jne 0x3a 1d: 45 31 c9 xor %r9d,%r9d 20: 45 31 c0 xor %r8d,%r8d 23: b8 2d 00 00 00 mov $0x2d,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 68 ja 0x9a 32: c3 ret 33: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 3a: 41 54 push %r12 3c: 48 83 ec 20 sub $0x20,%rsp Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 68 ja 0x70 8: c3 ret 9: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 10: 41 54 push %r12 12: 48 83 ec 20 sub $0x20,%rsp [ 2050.949675][ C1] RSP: 002b:00007ffddc9a7498 EFLAGS: 00000246 ORIG_RAX: 000000000000002d [ 2050.950143][ C1] RAX: ffffffffffffffda RBX: 000055a4e25caa20 RCX: 00007f84847ab4c0 [ 2050.950598][ C1] RDX: 0000000000002000 RSI: 00007ffddc9a7520 RDI: 0000000000000008 [ 2050.951036][ C1] RBP: 00007ffddc9a7520 R08: 0000000000000000 R09: 0000000000000000 [ 2050.951497][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008 Finger prints: dump_stack_lvl:validate_chain:__lock_acquire:_raw_spin_lock_nested