====================================== | [ 45.270812][ T392] Mirror/redirect action on | [ 58.884448][ C2] ------------[ cut here ]------------ | [ 58.884820][ C2] UBSAN: invalid-load in ./include/linux/skbuff.h:4267:9 | [ 58.885195][ C2] load of value 107 is not a valid value for type '_Bool' [ 58.885959][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 58.886583][ C2] Call Trace: [ 58.886758][ C2] <IRQ> [ 58.886909][ C2] dump_stack_lvl (lib/dump_stack.c:107) [ 58.887150][ C2] __ubsan_handle_load_invalid_value (lib/ubsan.c:218 lib/ubsan.c:419) DETECTED CRASH, lowering timeout [ 58.887621][ C2] br_forward_finish.cold (./include/linux/spinlock.h:396 net/bridge/br.c:81) bridge [ 58.888124][ C2] br_dev_xmit (net/bridge/br_device.c:102) bridge [ 58.888447][ C2] ? __pfx_br_dev_xmit (net/bridge/br_device.c:29) bridge [ 58.888774][ C2] ? debug_mutex_wake_waiter (kernel/locking/mutex-debug.c:38) [ 58.889064][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 58.889346][ C2] ? __pfx_packet_rcv (net/packet/af_packet.c:2124) [ 58.889598][ C2] ? dev_queue_xmit_nit (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 net/core/dev.c:2299) [ 58.889866][ C2] ? __pfx_qdisc_pkt_len_init (net/core/dev.c:3679) [ 58.890154][ C2] ? dev_queue_xmit_nit (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 net/core/dev.c:2299) [ 58.890435][ C2] dev_hard_start_xmit (./include/linux/netdevice.h:4991 ./include/linux/netdevice.h:5005 net/core/dev.c:3530 net/core/dev.c:3546) [ 58.890709][ C2] __dev_queue_xmit (./include/linux/netdevice.h:3369 net/core/dev.c:4338) [ 58.890964][ C2] ? __pfx_do_raw_write_trylock (kernel/locking/spinlock_debug.c:216) [ 58.891300][ C2] ? eth_header (net/ethernet/eth.c:100) [ 58.891551][ C2] ? __pfx___dev_queue_xmit (net/core/dev.c:4246) [ 58.891836][ C2] ? neigh_resolve_output (./include/linux/netdevice.h:3226 net/core/neighbour.c:1558 net/core/neighbour.c:1543) [ 58.892117][ C2] ? __neigh_update (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/neighbour.c:1446) [ 58.892389][ C2] __neigh_update (net/core/neighbour.c:1461) [ 58.892656][ C2] arp_process (./include/linux/instrumented.h:96 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:400 (discriminator 4) ./include/linux/refcount.h:261 (discriminator 4) ./include/linux/refcount.h:304 (discriminator 4) ./include/linux/refcount.h:322 (discriminator 4) ./include/net/neighbour.h:444 (discriminator 4) net/ipv4/arp.c:934 (discriminator 4)) [ 58.892901][ C2] ? __pfx_arp_process (net/ipv4/arp.c:699) [ 58.893169][ C2] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 58.893450][ C2] ? __pfx_arp_rcv (net/ipv4/arp.c:965) [ 58.893689][ C2] __netif_receive_skb_one_core (net/core/dev.c:5554 (discriminator 5)) [ 58.893991][ C2] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5547) [ 58.894330][ C2] ? br_vlan_lookup (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 ./include/linux/rhashtable.h:673 net/bridge/br_vlan.c:34) bridge [ 58.894663][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 58.894902][ C2] ? netif_receive_skb_internal (./include/linux/rcupdate.h:298 (discriminator 16) ./include/linux/rcupdate.h:750 (discriminator 16) net/core/dev.c:5741 (discriminator 16)) [ 58.895212][ C2] netif_receive_skb_internal (net/core/dev.c:5754) [ 58.895514][ C2] ? __pfx_netif_receive_skb_internal (net/core/dev.c:5733) [ 58.895837][ C2] ? br_handle_vlan (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 net/bridge/br_private.h:754 net/bridge/br_vlan.c:505) bridge [ 58.896173][ C2] netif_receive_skb (net/core/dev.c:5813) [ 58.896434][ C2] br_handle_frame_finish (net/bridge/br_input.c:216) bridge [ 58.896797][ C2] ? __pfx_br_handle_frame_finish (net/bridge/br_input.c:75) bridge [ 58.897169][ C2] ? __lock_release (kernel/locking/lockdep.c:347 kernel/locking/lockdep.c:5436) [ 58.897431][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 58.897718][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 58.897997][ C2] ? sock_def_readable (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 net/core/sock.c:3357) [ 58.898284][ C2] br_handle_frame (net/bridge/br_input.c:417) bridge [ 58.898609][ C2] ? __pfx_br_handle_frame (net/bridge/br_input.c:321) bridge [ 58.898954][ C2] ? __pfx_packet_rcv (net/packet/af_packet.c:2124) [ 58.899209][ C2] __netif_receive_skb_core.constprop.0 (net/core/dev.c:5448) [ 58.899583][ C2] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 58.899814][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 58.900071][ C2] ? __pfx___netif_receive_skb_core.constprop.0 (net/core/dev.c:5341) [ 58.900453][ C2] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 58.900719][ C2] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5995) [ 58.900981][ C2] __netif_receive_skb_one_core (net/core/dev.c:5553) [ 58.901290][ C2] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5547) [ 58.901619][ C2] ? __pfx_do_raw_spin_trylock (kernel/locking/spinlock_debug.c:122) [ 58.901921][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 58.902163][ C2] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5995) [ 58.902433][ C2] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:5997) [ 58.902677][ C2] ? 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) [ 58.902919][ C2] __napi_poll.constprop.0 (net/core/dev.c:6625) [ 58.903200][ C2] net_rx_action (net/core/dev.c:6694 net/core/dev.c:6827) [ 58.903471][ C2] ? __pfx_net_rx_action (net/core/dev.c:6791) [ 58.903756][ C2] __do_softirq (kernel/softirq.c:553) [ 58.903998][ C2] ? __dev_queue_xmit (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:818 net/core/dev.c:4364) [ 58.904267][ C2] do_softirq (kernel/softirq.c:454 kernel/softirq.c:441) [ 58.904485][ C2] </IRQ> [ 58.904637][ C2] <TASK> [ 58.904793][ C2] __local_bh_enable_ip (kernel/softirq.c:381) [ 58.905056][ C2] ? __dev_queue_xmit (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:818 net/core/dev.c:4364) [ 58.905319][ C2] __dev_queue_xmit (net/core/dev.c:4365) [ 58.905576][ C2] ? packet_parse_headers (./include/linux/skbuff.h:2999 net/packet/af_packet.c:1944) [ 58.905851][ C2] ? packet_parse_headers (./include/linux/skbuff.h:2999 net/packet/af_packet.c:1944) [ 58.906135][ C2] ? __pfx_sock_alloc_send_pskb (net/core/sock.c:2767) [ 58.906432][ C2] ? __pfx___dev_queue_xmit (net/core/dev.c:4246) [ 58.906711][ C2] ? dev_get_by_index (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 net/core/dev.c:860) [ 58.906978][ C2] packet_snd (net/packet/af_packet.c:3084) [ 58.907221][ C2] ? __lock_release (kernel/locking/lockdep.c:353 kernel/locking/lockdep.c:5436) [ 58.907473][ C2] ? __pfx_packet_snd (net/packet/af_packet.c:2946) [ 58.907735][ C2] ? __might_fault (mm/memory.c:6060 mm/memory.c:6053) [ 58.907996][ C2] __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) [ 58.908235][ C2] ? __pfx___sys_sendto (net/socket.c:2161) [ 58.908534][ C2] ? sock_ioctl (net/socket.c:1344) [ 58.908775][ C2] ? rseq_ip_fixup (kernel/rseq.c:257 kernel/rseq.c:291) [ 58.909023][ C2] ? __pfx_find_vma (mm/mmap.c:1883) [ 58.909268][ C2] ? __pfx___up_read (kernel/locking/rwsem.c:1339) [ 58.909516][ C2] ? __pfx_rseq_ip_fixup (kernel/rseq.c:275) [ 58.909792][ C2] __x64_sys_sendto (net/socket.c:2199) [ 58.910041][ C2] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 58.910380][ C2] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 58.910618][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 58.910922][ C2] RIP: 0033:0x7f496d13385a [ 58.911155][ C2] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 15 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7e c3 0f 1f 44 00 00 41 54 48 83 ec 30 44 89 All code ======== 0: d8 64 89 02 fsubs 0x2(%rcx,%rcx,4) 4: 48 c7 c0 ff ff ff ff mov $0xffffffffffffffff,%rax b: eb b8 jmp 0xffffffffffffffc5 d: 0f 1f 00 nopl (%rax) 10: f3 0f 1e fa endbr64 14: 41 89 ca mov %ecx,%r10d 17: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax 1e: 00 1f: 85 c0 test %eax,%eax 21: 75 15 jne 0x38 23: b8 2c 00 00 00 mov $0x2c,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 7e ja 0xb0 32: c3 ret 33: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 38: 41 54 push %r12 3a: 48 83 ec 30 sub $0x30,%rsp 3e: 44 rex.R 3f: 89 .byte 0x89 Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 7e ja 0x86 8: c3 ret 9: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) e: 41 54 push %r12 10: 48 83 ec 30 sub $0x30,%rsp 14: 44 rex.R 15: 89 .byte 0x89 [ 58.912132][ C2] RSP: 002b:00007fff717987e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 58.912556][ C2] RAX: ffffffffffffffda RBX: 00000000017559d0 RCX: 00007f496d13385a [ 58.912957][ C2] RDX: 000000000000002a RSI: 0000000001755c92 RDI: 0000000000000005 [ 58.913356][ C2] RBP: 0000000001755c92 R08: 00007fff717987f0 R09: 0000000000000014 [ 58.913755][ C2] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 Finger prints: dump_stack_lvl:__ubsan_handle_load_invalid_value:br_dev_xmit:dev_hard_start_xmit