====================================== | [ 37.362709][ T366] br11: port 1(veth1.11) entered forwarding state | [ 43.961232][ C0] ------------[ cut here ]------------ | [ 43.961537][ C0] kernel BUG at net/core/skbuff.c:3505! | [ 43.961743][ C0] invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 43.962204][ C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 43.962548][ C0] RIP: 0010:__skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 43.962713][ C0] Code: 44 89 14 24 ff d0 0f 1f 00 4c 8b 44 24 08 44 8b 14 24 41 89 c1 eb a5 89 e8 e9 2d fe ff ff 41 ff d5 0f 1f 00 e9 1f fa ff ff 90 <0f> 0b 48 8b 7c 24 10 89 54 24 48 48 89 44 24 40 e8 17 a6 91 fe 8b All code ======== 0: 44 89 14 24 mov %r10d,(%rsp) 4: ff d0 call *%rax 6: 0f 1f 00 nopl (%rax) 9: 4c 8b 44 24 08 mov 0x8(%rsp),%r8 e: 44 8b 14 24 mov (%rsp),%r10d 12: 41 89 c1 mov %eax,%r9d 15: eb a5 jmp 0xffffffffffffffbc 17: 89 e8 mov %ebp,%eax 19: e9 2d fe ff ff jmp 0xfffffffffffffe4b 1e: 41 ff d5 call *%r13 21: 0f 1f 00 nopl (%rax) 24: e9 1f fa ff ff jmp 0xfffffffffffffa48 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 48 8b 7c 24 10 mov 0x10(%rsp),%rdi 31: 89 54 24 48 mov %edx,0x48(%rsp) 35: 48 89 44 24 40 mov %rax,0x40(%rsp) 3a: e8 17 a6 91 fe call 0xfffffffffe91a656 3f: 8b .byte 0x8b Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 48 8b 7c 24 10 mov 0x10(%rsp),%rdi 7: 89 54 24 48 mov %edx,0x48(%rsp) b: 48 89 44 24 40 mov %rax,0x40(%rsp) 10: e8 17 a6 91 fe call 0xfffffffffe91a62c 15: 8b .byte 0x8b [ 43.963264][ C0] RSP: 0018:ffffc90000007920 EFLAGS: 00010202 [ 43.963459][ C0] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 1ffff11001019bd1 [ 43.963685][ C0] RDX: 0000000000000040 RSI: 0000000000000000 RDI: ffff8880080cde88 [ 43.963911][ C0] RBP: 0000000000000000 R08: ffffc900000079e0 R09: fffffbfff1fdc5ea [ 43.964137][ C0] R10: ffffffff8fee2f57 R11: dffffc0000000000 R12: 0000000000000000 [ 43.964366][ C0] R13: 0000000000000000 R14: ffffc900000079e0 R15: ffff888005b57248 [ 43.964593][ C0] FS: 00007f53bfb56300(0000) GS:ffff88802fa00000(0000) knlGS:0000000000000000 [ 43.964855][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.965045][ C0] CR2: 00007ffee5672f80 CR3: 0000000006214005 CR4: 0000000000770ef0 [ 43.965277][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.965505][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.965730][ C0] PKRU: 55555554 [ 43.965851][ C0] Call Trace: [ 43.965965][ C0] <IRQ> [ 43.966047][ C0] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) [ 43.966166][ C0] ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) [ 43.966284][ C0] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 43.966438][ C0] ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) [ 43.966592][ C0] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 43.966746][ C0] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 43.966896][ C0] ? handle_invalid_op (arch/x86/kernel/traps.c:213) [ 43.967048][ C0] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 43.967199][ C0] ? exc_invalid_op (arch/x86/kernel/traps.c:265) [ 43.967354][ C0] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 43.967511][ C0] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 43.967664][ C0] __skb_checksum_complete (net/core/skbuff.c:3643) [ 43.967818][ C0] ? __pfx___skb_checksum_complete (net/core/skbuff.c:3637) [ 43.968015][ C0] ? __pfx_csum_partial_ext (./include/net/checksum.h:120) [ 43.968166][ C0] ? __pfx_csum_block_add_ext (./include/net/checksum.h:103) [ 43.968318][ C0] icmp_rcv (./include/linux/skbuff.h:4567 net/ipv4/icmp.c:1213) [ 43.968438][ C0] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 5)) [ 43.968594][ C0] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) [ 43.968747][ C0] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) [ 43.968897][ C0] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) [ 43.969052][ C0] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1136 ./include/linux/skbuff.h:1188 net/ipv4/ip_input.c:390) [ 43.969243][ C0] ip_rcv (./include/net/dst.h:460 net/ipv4/ip_input.c:449 ./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:569) [ 43.969360][ C0] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 43.969512][ C0] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 43.969663][ C0] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051) [ 43.969817][ C0] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 43.969969][ C0] __netif_receive_skb_one_core (net/core/dev.c:5610 (discriminator 4)) [ 43.970157][ C0] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5603) [ 43.970349][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 43.970498][ C0] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051) [ 43.970652][ C0] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:6053) [ 43.970806][ C0] __napi_poll.constprop.0 (net/core/dev.c:6703) [ 43.970957][ C0] net_rx_action (net/core/dev.c:6772 net/core/dev.c:6886) [ 43.971109][ C0] ? __pfx_net_rx_action (net/core/dev.c:6850) [ 43.971270][ C0] ? hlock_class (kernel/locking/lockdep.c:223) [ 43.971424][ C0] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 43.971576][ C0] __do_softirq (kernel/softirq.c:553) [ 43.971738][ C0] ? __neigh_event_send (./include/linux/bottom_half.h:33 net/core/neighbour.c:1245) [ 43.971894][ C0] do_softirq (kernel/softirq.c:454 kernel/softirq.c:441) [ 43.972012][ C0] </IRQ> [ 43.972091][ C0] <TASK> [ 43.972168][ C0] __local_bh_enable_ip (kernel/softirq.c:381) [ 43.972319][ C0] __neigh_event_send (./arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:207 ./include/trace/events/neigh.h:237 net/core/neighbour.c:1246) [ 43.972475][ C0] neigh_resolve_output (net/core/neighbour.c:1547) [ 43.972627][ C0] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:77 kernel/softirq.c:386) [ 43.972784][ C0] ? ___neigh_create (net/core/neighbour.c:722 (discriminator 9)) [ 43.972938][ C0] ip_finish_output2 (./include/net/neighbour.h:542 net/ipv4/ip_output.c:235) [ 43.973089][ C0] ? __pfx_get_random_u32 (drivers/char/random.c:532) [ 43.973244][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 43.973394][ C0] ? __pfx_raw_getfrag (net/ipv4/raw.c:446) [ 43.973546][ C0] ? __pfx_ip_finish_output2 (net/ipv4/ip_output.c:199) [ 43.973705][ C0] ? __pfx_vrf_ip_out_direct_finish (drivers/net/vrf.c:972) vrf [ 43.973907][ C0] ? __ip_finish_output (./include/linux/skbuff.h:1624 ./include/linux/skbuff.h:4942 net/ipv4/ip_output.c:307 net/ipv4/ip_output.c:295) [ 43.974062][ C0] ip_output (./include/linux/netfilter.h:303 net/ipv4/ip_output.c:433) [ 43.974176][ C0] ? __ip_local_out (./include/net/l3mdev.h:203 ./include/net/l3mdev.h:213 net/ipv4/ip_output.c:112) [ 43.974327][ C0] ? __pfx_ip_output (net/ipv4/ip_output.c:427) [ 43.974476][ C0] ? __ip_make_skb (net/ipv4/ip_output.c:1379 net/ipv4/ip_output.c:1487) [ 43.974629][ C0] ? __pfx_raw_getfrag (net/ipv4/raw.c:446) [ 43.974778][ C0] ? ip_append_data (net/ipv4/ip_output.c:1368 net/ipv4/ip_output.c:1347) [ 43.974931][ C0] ip_push_pending_frames (./include/net/dst.h:450 net/ipv4/ip_output.c:129 net/ipv4/ip_output.c:1496 net/ipv4/ip_output.c:1516) [ 43.975081][ C0] raw_sendmsg (net/ipv4/raw.c:648) [ 43.975234][ C0] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 43.975390][ C0] ? __pfx_raw_sendmsg (net/ipv4/raw.c:476) [ 43.975539][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 43.975691][ C0] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 43.975844][ C0] ? __lock_release (kernel/locking/lockdep.c:5430) [ 43.975993][ C0] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) [ 43.976146][ C0] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 43.976295][ C0] ? 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) [ 43.976450][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 43.976603][ C0] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) [ 43.976754][ C0] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) [ 43.976905][ C0] ? __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) [ 43.977059][ C0] __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) [ 43.977214][ C0] ? __pfx___sys_sendto (net/socket.c:2161) [ 43.977366][ C0] ? do_user_addr_fault (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 ./include/linux/mm.h:686 arch/x86/mm/fault.c:1357) [ 43.977519][ C0] ? reacquire_held_locks (kernel/locking/lockdep.c:5279) [ 43.977672][ C0] ? __lock_release (kernel/locking/lockdep.c:5430) [ 43.977825][ C0] ? do_user_addr_fault (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 ./include/linux/mm.h:688 arch/x86/mm/fault.c:1357) [ 43.977978][ C0] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 43.978128][ C0] ? __up_read (./arch/x86/include/asm/atomic64_64.h:79 ./include/linux/atomic/atomic-arch-fallback.h:2735 ./include/linux/atomic/atomic-long.h:184 ./include/linux/atomic/atomic-instrumented.h:3289 kernel/locking/rwsem.c:1347) [ 43.978281][ C0] ? __pfx___up_read (kernel/locking/rwsem.c:1339) [ 43.978435][ C0] ? do_user_addr_fault (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 ./include/linux/mm.h:688 arch/x86/mm/fault.c:1357) [ 43.978589][ C0] __x64_sys_sendto (net/socket.c:2199) [ 43.978738][ C0] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 43.978926][ C0] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 43.979078][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 43.979276][ C0] RIP: 0033:0x7f53bfe2c85a [ 43.979434][ C0] 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 [ 43.979971][ C0] RSP: 002b:00007ffee56739b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 43.980202][ C0] RAX: ffffffffffffffda RBX: 0000000000000038 RCX: 00007f53bfe2c85a [ 43.980433][ C0] RDX: 0000000000000040 RSI: 0000000000bcb340 RDI: 0000000000000005 [ 43.980660][ C0] RBP: 00007ffee5673a10 R08: 00000000004185e0 R09: 0000000000000010 [ 43.980888][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000054 Finger prints: __skb_checksum:__skb_checksum_complete:icmp_rcv:ip_protocol_deliver_rcu