====================================== | [ 43.987858][ T369] GACT probability NOT on | [ 63.201845][ C3] ------------[ cut here ]------------ | [ 63.202193][ C3] kernel BUG at net/core/skbuff.c:3505! | [ 63.202488][ C3] invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 63.202968][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 63.203368][ C3] Workqueue: events once_deferred [ 63.203555][ C3] RIP: 0010:__skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 63.203722][ C3] 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 [ 63.204284][ C3] RSP: 0018:ffffc90000278888 EFLAGS: 00010202 [ 63.204490][ C3] RAX: 000000000000e831 RBX: 0000000000000008 RCX: 1ffff110011c29d9 [ 63.204748][ C3] RDX: 0000000000000070 RSI: dffffc0000000000 RDI: ffff888008e14ec8 [ 63.205012][ C3] RBP: 000000000000e831 R08: 0000000000000008 R09: ffffed1000561489 [ 63.205251][ C3] R10: ffff88801f182988 R11: ffff888008e14c00 R12: 0000000000000008 [ 63.205495][ C3] R13: 0000000000000000 R14: ffffc90000278948 R15: ffff88801f182988 [ 63.205757][ C3] FS: 0000000000000000(0000) GS:ffff888036180000(0000) knlGS:0000000000000000 [ 63.206064][ C3] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 63.206278][ C3] CR2: 00007f43308af550 CR3: 00000000076c4002 CR4: 0000000000770ef0 [ 63.206525][ C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 63.206793][ C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.207058][ C3] PKRU: 55555554 [ 63.207182][ C3] Call Trace: [ 63.207306][ C3] [ 63.207410][ C3] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) [ 63.207537][ C3] ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) [ 63.207660][ C3] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 63.207858][ C3] ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) [ 63.208028][ C3] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 63.208189][ C3] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 63.208468][ C3] ? handle_invalid_op (arch/x86/kernel/traps.c:213) [ 63.208627][ C3] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 63.208795][ C3] ? exc_invalid_op (arch/x86/kernel/traps.c:265) [ 63.208960][ C3] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 63.209245][ C3] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 63.209419][ C3] ? __skb_checksum (net/core/skbuff.c:3441 (discriminator 4)) [ 63.209595][ C3] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 63.209756][ C3] ? 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) [ 63.210064][ C3] __skb_checksum_complete (net/core/skbuff.c:3643) [ 63.210226][ C3] ? __pfx___skb_checksum_complete (net/core/skbuff.c:3637) [ 63.210467][ C3] ? __pfx_csum_partial_ext (./include/net/checksum.h:120) [ 63.210739][ C3] ? __pfx_csum_block_add_ext (./include/net/checksum.h:103) [ 63.210923][ C3] ? ipv6_raw_deliver (net/ipv6/raw.c:142) [ 63.211088][ C3] icmpv6_rcv (./include/linux/skbuff.h:4567 net/ipv6/icmp.c:921) [ 63.211253][ C3] ip6_protocol_deliver_rcu (net/ipv6/ip6_input.c:438 (discriminator 5)) [ 63.211555][ C3] ip6_input_finish (./include/linux/rcupdate.h:779 net/ipv6/ip6_input.c:484) [ 63.211717][ C3] ip6_input (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv6/ip6_input.c:492) [ 63.211853][ C3] ? __pfx_ip6_input (net/ipv6/ip6_input.c:491) [ 63.212032][ C3] ? ip6_rcv_core (./include/net/sock.h:2827 net/ipv6/ip6_input.c:290) [ 63.212189][ C3] ipv6_rcv (./include/net/dst.h:460 net/ipv6/ip6_input.c:79 ./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv6/ip6_input.c:310) [ 63.212425][ C3] ? __pfx_ipv6_rcv (net/ipv6/ip6_input.c:304) [ 63.212591][ C3] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 63.212769][ C3] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051) [ 63.212927][ C3] ? __pfx_ipv6_rcv (net/ipv6/ip6_input.c:304) [ 63.213203][ C3] __netif_receive_skb_one_core (net/core/dev.c:5603) [ 63.213425][ C3] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5603) [ 63.213634][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 63.213809][ C3] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051) [ 63.214069][ C3] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:6053) [ 63.214251][ C3] __napi_poll.constprop.0 (net/core/dev.c:6703) [ 63.214427][ C3] net_rx_action (net/core/dev.c:6772 net/core/dev.c:6886) [ 63.214605][ C3] ? __pfx_net_rx_action (net/core/dev.c:6850) [ 63.214765][ C3] ? hlock_class (kernel/locking/lockdep.c:223) [ 63.215069][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 63.215239][ C3] __do_softirq (kernel/softirq.c:553) [ 63.215421][ C3] irq_exit_rcu (kernel/softirq.c:427 kernel/softirq.c:632 kernel/softirq.c:644) [ 63.215563][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) [ 63.215729][ C3] [ 63.215951][ C3] [ 63.216038][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) [ 63.216237][ C3] RIP: 0010:__mutex_trylock_common (kernel/locking/mutex.c:125) [ 63.216459][ C3] Code: f3 65 48 8b 04 25 28 00 00 00 48 89 44 24 68 31 c0 e8 47 ac 67 00 4c 89 f8 48 c1 e8 03 80 3c 18 00 0f 85 b3 01 00 00 49 8b 07 <48> c7 c2 00 0b e4 8b 49 89 d4 48 89 44 24 30 49 c1 ec 03 48 b8 00 All code ======== 0: f3 65 48 8b 04 25 28 repz mov %gs:0x28,%rax 7: 00 00 00 a: 48 89 44 24 68 mov %rax,0x68(%rsp) f: 31 c0 xor %eax,%eax 11: e8 47 ac 67 00 call 0x67ac5d 16: 4c 89 f8 mov %r15,%rax 19: 48 c1 e8 03 shr $0x3,%rax 1d: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1) 21: 0f 85 b3 01 00 00 jne 0x1da 27: 49 8b 07 mov (%r15),%rax 2a:* 48 c7 c2 00 0b e4 8b mov $0xffffffff8be40b00,%rdx <-- trapping instruction 31: 49 89 d4 mov %rdx,%r12 34: 48 89 44 24 30 mov %rax,0x30(%rsp) 39: 49 c1 ec 03 shr $0x3,%r12 3d: 48 rex.W 3e: b8 .byte 0xb8 ... Code starting with the faulting instruction =========================================== 0: 48 c7 c2 00 0b e4 8b mov $0xffffffff8be40b00,%rdx 7: 49 89 d4 mov %rdx,%r12 a: 48 89 44 24 30 mov %rax,0x30(%rsp) f: 49 c1 ec 03 shr $0x3,%r12 13: 48 rex.W 14: b8 .byte 0xb8 ... [ 63.217281][ C3] RSP: 0018:ffffc9000043fa70 EFLAGS: 00000246 [ 63.217483][ C3] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff862c7519 [ 63.217723][ C3] RDX: fffffbfff13406d1 RSI: 0000000000000008 RDI: ffffffff89a03680 [ 63.217959][ C3] RBP: 1ffff92000087f50 R08: 0000000000000000 R09: fffffbfff13406d0 [ 63.218193][ C3] R10: ffffffff89a03687 R11: ffff888004e00a58 R12: ffffffff89a03680 [ 63.218524][ C3] R13: 0000000000000000 R14: ffff888004e00040 R15: ffffffff89a03680 [ 63.218769][ C3] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:107) [ 63.218930][ C3] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:104) [ 63.219132][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 63.219385][ C3] ? arch_jump_label_transform_queue (arch/x86/kernel/jump_label.c:137) [ 63.219586][ C3] __mutex_lock (kernel/locking/mutex.c:611 kernel/locking/mutex.c:752) [ 63.219747][ C3] ? arch_jump_label_transform_queue (arch/x86/kernel/jump_label.c:137) [ 63.219947][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 63.220200][ C3] ? static_key_disable_cpuslocked (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:1194 kernel/jump_label.c:234) [ 63.220401][ C3] ? arch_jump_label_transform_queue (arch/x86/kernel/jump_label.c:137) [ 63.220600][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) [ 63.220759][ C3] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) [ 63.221009][ C3] ? static_key_disable_cpuslocked (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:1194 kernel/jump_label.c:234) [ 63.221207][ C3] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) [ 63.221366][ C3] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 63.221524][ C3] ? arch_jump_label_transform_queue (arch/x86/kernel/jump_label.c:137) [ 63.221722][ C3] arch_jump_label_transform_queue (arch/x86/kernel/jump_label.c:137) [ 63.222015][ C3] ? kernel_text_address (kernel/extable.c:99) [ 63.222175][ C3] __jump_label_update (kernel/jump_label.c:475) [ 63.222332][ C3] ? jump_label_update (kernel/jump_label.c:819) [ 63.222495][ C3] static_key_disable_cpuslocked (kernel/jump_label.c:32 kernel/jump_label.c:236) [ 63.222690][ C3] static_key_disable (kernel/jump_label.c:245) [ 63.222945][ C3] once_deferred (lib/once.c:21 (discriminator 5)) [ 63.223129][ C3] process_one_work (kernel/workqueue.c:2633) [ 63.223296][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 63.223455][ C3] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 63.223617][ C3] ? assign_work (kernel/workqueue.c:1101) [ 63.223876][ C3] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 63.224035][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 63.224248][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 63.224402][ C3] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 63.224559][ C3] kthread (kernel/kthread.c:388) [ 63.224676][ C3] ? __pfx_kthread (kernel/kthread.c:341) [ 63.224828][ C3] ret_from_fork (arch/x86/kernel/process.c:147) [ 63.224981][ C3] ? __pfx_kthread (kernel/kthread.c:341) Finger prints: __skb_checksum:__skb_checksum_complete:icmpv6_rcv:ip6_protocol_deliver_rcu