====================================== | [ 39.362075][ T318] ip (318) used greatest stack depth: 23360 bytes left | [ 41.137297][ C3] ------------[ cut here ]------------ | [ 41.137675][ C3] kernel BUG at net/core/skbuff.c:3505! | [ 41.137863][ C3] invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 41.138350][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 41.138699][ C3] RIP: 0010:__skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 41.138874][ 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 [ 41.139425][ C3] RSP: 0018:ffffc90000278910 EFLAGS: 00010202 [ 41.139635][ C3] RAX: 0000000000001598 RBX: 0000000000000008 RCX: 1ffff110005538f9 [ 41.139865][ C3] RDX: 000000000000007a RSI: dffffc0000000000 RDI: ffff888002a9c7c8 [ 41.140097][ C3] RBP: 0000000000001598 R08: 0000000000000008 R09: fffffbfff66dc5ea [ 41.140332][ C3] R10: ffffffffb36e2f57 R11: dffffc0000000000 R12: 0000000000000008 [ 41.140568][ C3] R13: 0000000000000000 R14: ffffc900002789d0 R15: ffff8880044ba988 [ 41.140810][ C3] FS: 0000000000000000(0000) GS:ffff88802fb80000(0000) knlGS:0000000000000000 [ 41.141080][ C3] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.141276][ C3] CR2: 0000564d9647e990 CR3: 0000000036b1e001 CR4: 0000000000770ef0 [ 41.141512][ C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.141750][ C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.142018][ C3] PKRU: 55555554 [ 41.142140][ C3] Call Trace: [ 41.142292][ C3] <IRQ> [ 41.142374][ C3] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) [ 41.142498][ C3] ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) [ 41.142621][ C3] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 41.142786][ C3] ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) [ 41.142954][ C3] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 41.143114][ C3] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 41.143275][ C3] ? handle_invalid_op (arch/x86/kernel/traps.c:213) [ 41.143442][ C3] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 41.143604][ C3] ? exc_invalid_op (arch/x86/kernel/traps.c:265) [ 41.143763][ C3] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 41.143924][ C3] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 41.144084][ C3] __skb_checksum_complete (net/core/skbuff.c:3643) [ 41.144286][ C3] ? __pfx___skb_checksum_complete (net/core/skbuff.c:3637) [ 41.144473][ C3] ? __pfx_csum_partial_ext (./include/net/checksum.h:120) [ 41.144618][ C3] ? __pfx_csum_block_add_ext (./include/net/checksum.h:103) [ 41.144766][ C3] icmp_rcv (./include/linux/skbuff.h:4567 net/ipv4/icmp.c:1213) [ 41.144885][ C3] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 5)) [ 41.145036][ C3] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) [ 41.145179][ C3] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) [ 41.145335][ C3] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) [ 41.145522][ C3] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1136 ./include/linux/skbuff.h:1188 net/ipv4/ip_input.c:390) [ 41.145706][ C3] 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) [ 41.145837][ C3] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 41.146001][ C3] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 41.146154][ C3] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051) [ 41.146334][ C3] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 41.146489][ C3] __netif_receive_skb_one_core (net/core/dev.c:5610 (discriminator 4)) [ 41.146687][ C3] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5603) [ 41.146889][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) [ 41.147041][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 41.147189][ C3] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051) [ 41.147337][ C3] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:6053) [ 41.147495][ C3] __napi_poll.constprop.0 (net/core/dev.c:6703) [ 41.147648][ C3] net_rx_action (net/core/dev.c:6772 net/core/dev.c:6886) [ 41.147811][ C3] ? __pfx_net_rx_action (net/core/dev.c:6850) [ 41.147963][ C3] __do_softirq (kernel/softirq.c:553) [ 41.148113][ C3] irq_exit_rcu (kernel/softirq.c:427 kernel/softirq.c:632 kernel/softirq.c:644) [ 41.148233][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) [ 41.148382][ C3] </IRQ> [ 41.148457][ C3] <TASK> [ 41.148530][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) [ 41.148713][ C3] RIP: 0010:default_idle (./arch/x86/include/asm/irqflags.h:37 ./arch/x86/include/asm/irqflags.h:72 arch/x86/kernel/process.c:743) [ 41.148871][ C3] 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 73 a4 3e 00 fb f4 <fa> 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 73 a4 3e 00 verw 0x3ea473(%rip) # 0x3ea49b 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 [ 41.149398][ C3] RSP: 0018:ffffc9000015fdf8 EFLAGS: 00000246 [ 41.149596][ C3] RAX: 000000000006408d RBX: 1ffff9200002bfc1 RCX: ffffffffb1a76802 [ 41.149825][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffaf497aa6 [ 41.150054][ C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005f76e64 [ 41.150298][ C3] R10: ffff88802fbb7323 R11: ffff88802fbbbec0 R12: 0000000000000000 [ 41.150522][ C3] R13: ffff888001b64540 R14: dffffc0000000000 R15: 0000000000000000 [ 41.150748][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:147) [ 41.150912][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:171) [ 41.151063][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:98) [ 41.151226][ C3] cpuidle_idle_call (kernel/sched/idle.c:171) [ 41.151378][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:147) [ 41.151537][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) [ 41.151687][ C3] do_idle (kernel/sched/idle.c:312) [ 41.151809][ C3] cpu_startup_entry (kernel/sched/idle.c:409 (discriminator 1)) [ 41.151958][ C3] start_secondary (arch/x86/kernel/smpboot.c:224 arch/x86/kernel/smpboot.c:304) [ 41.152116][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:254) Finger prints: __skb_checksum:__skb_checksum_complete:icmp_rcv:ip_protocol_deliver_rcu