====================================== | [ 40.045730][ T357] ip (357) used greatest stack depth: 22944 bytes left | [ 124.159229][ C3] ------------[ cut here ]------------ | [ 124.159613][ C3] kernel BUG at net/core/skbuff.c:3505! | [ 124.159807][ C3] invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 124.160260][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 124.160624][ C3] RIP: 0010:__skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 124.160804][ 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 e7 53 8d 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 e7 53 8d fe call 0xfffffffffe8d5426 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 e7 53 8d fe call 0xfffffffffe8d53fc 15: 8b .byte 0x8b [ 124.161385][ C3] RSP: 0018:ffffc90000278920 EFLAGS: 00010202 [ 124.161590][ C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 1ffff110011b6369 [ 124.161842][ C3] RDX: 0000000000000040 RSI: 0000000000000000 RDI: ffff888008db1b48 [ 124.162096][ C3] RBP: 0000000000000000 R08: ffffc900002789e0 R09: fffffbfff252a5a2 [ 124.162336][ C3] R10: ffffffff92952d17 R11: dffffc0000000000 R12: 0000000000000000 [ 124.162575][ C3] R13: 0000000000000000 R14: ffffc900002789e0 R15: ffff8880023b1948 [ 124.162813][ C3] FS: 00007febbc7bc300(0000) GS:ffff888036180000(0000) knlGS:0000000000000000 [ 124.163101][ C3] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 124.163324][ C3] CR2: 00007febbca4b840 CR3: 000000000658c005 CR4: 0000000000770ef0 [ 124.163562][ C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 124.163818][ C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 124.164056][ C3] PKRU: 55555554 [ 124.164186][ C3] Call Trace: [ 124.164309][ C3] <IRQ> [ 124.164392][ C3] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) [ 124.164520][ C3] ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) [ 124.164644][ C3] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 124.164807][ C3] ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) [ 124.164971][ C3] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 124.165133][ C3] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 124.165295][ C3] ? handle_invalid_op (arch/x86/kernel/traps.c:213) [ 124.165457][ C3] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 124.165620][ C3] ? exc_invalid_op (arch/x86/kernel/traps.c:265) [ 124.165783][ C3] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 124.165947][ C3] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 124.166114][ C3] __skb_checksum_complete (net/core/skbuff.c:3643) [ 124.166277][ C3] ? __pfx___skb_checksum_complete (net/core/skbuff.c:3637) [ 124.166477][ C3] ? __pfx_csum_partial_ext (./include/net/checksum.h:120) [ 124.166636][ C3] ? __pfx_csum_block_add_ext (./include/net/checksum.h:103) [ 124.166800][ C3] icmp_rcv (./include/linux/skbuff.h:4567 net/ipv4/icmp.c:1213) [ 124.166924][ C3] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 5)) [ 124.167087][ C3] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) [ 124.167250][ C3] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) [ 124.167413][ C3] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) [ 124.167577][ C3] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1136 ./include/linux/skbuff.h:1188 net/ipv4/ip_input.c:390) [ 124.167781][ 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) [ 124.167900][ C3] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 124.168059][ C3] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 124.168222][ C3] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051) [ 124.168385][ C3] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 124.168547][ C3] __netif_receive_skb_one_core (net/core/dev.c:5610 (discriminator 4)) [ 124.168745][ C3] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5603) [ 124.168946][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 124.169105][ C3] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051) [ 124.169268][ C3] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:6053) [ 124.169431][ C3] __napi_poll.constprop.0 (net/core/dev.c:6703) [ 124.169591][ C3] net_rx_action (net/core/dev.c:6772 net/core/dev.c:6886) [ 124.169755][ C3] ? __pfx_net_rx_action (net/core/dev.c:6850) [ 124.169918][ C3] ? usage_skip (kernel/locking/lockdep.c:2295 kernel/locking/lockdep.c:2263) [ 124.170080][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 124.170241][ C3] __do_softirq (kernel/softirq.c:553) [ 124.170403][ C3] ? __neigh_event_send (./include/linux/bottom_half.h:33 net/core/neighbour.c:1245) [ 124.170566][ C3] do_softirq (kernel/softirq.c:454 kernel/softirq.c:441) [ 124.170688][ C3] </IRQ> [ 124.170770][ C3] <TASK> [ 124.170851][ C3] __local_bh_enable_ip (kernel/softirq.c:381) [ 124.171011][ C3] __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) [ 124.171176][ C3] neigh_resolve_output (net/core/neighbour.c:1547) [ 124.171336][ C3] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:77 kernel/softirq.c:386) [ 124.171498][ C3] ? ___neigh_create (net/core/neighbour.c:722 (discriminator 9)) [ 124.171659][ C3] ip_finish_output2 (./include/net/neighbour.h:542 net/ipv4/ip_output.c:235) [ 124.171820][ C3] ? __pfx_get_random_u32 (drivers/char/random.c:532) [ 124.171981][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 124.172140][ C3] ? __pfx_raw_getfrag (net/ipv4/raw.c:446) [ 124.172317][ C3] ? __pfx_ip_finish_output2 (net/ipv4/ip_output.c:199) [ 124.172482][ C3] ? __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) [ 124.172646][ C3] ip_output (./include/linux/netfilter.h:303 net/ipv4/ip_output.c:433) [ 124.172770][ C3] ? __ip_local_out (net/ipv4/ip_output.c:96 net/ipv4/ip_output.c:107) [ 124.172932][ C3] ? __pfx_ip_output (net/ipv4/ip_output.c:427) [ 124.173092][ C3] ? __ip_make_skb (net/ipv4/ip_output.c:1379 net/ipv4/ip_output.c:1487) [ 124.173269][ C3] ? __pfx_raw_getfrag (net/ipv4/raw.c:446) [ 124.173430][ C3] ? ip_append_data (net/ipv4/ip_output.c:1368 net/ipv4/ip_output.c:1347) [ 124.173598][ C3] 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) [ 124.173759][ C3] raw_sendmsg (net/ipv4/raw.c:648) [ 124.173922][ C3] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 124.174086][ C3] ? __pfx_raw_sendmsg (net/ipv4/raw.c:476) [ 124.174257][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 124.174419][ C3] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 124.174581][ C3] ? __lock_release (kernel/locking/lockdep.c:5430) [ 124.174746][ C3] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) [ 124.174907][ C3] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 124.175068][ 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) [ 124.175231][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 124.175403][ C3] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) [ 124.175564][ C3] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) [ 124.175726][ C3] ? __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) [ 124.175890][ C3] __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) [ 124.176052][ C3] ? __pfx___sys_sendto (net/socket.c:2161) [ 124.176215][ C3] ? 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) [ 124.176377][ C3] ? reacquire_held_locks (kernel/locking/lockdep.c:5279) [ 124.176559][ C3] ? __lock_release (kernel/locking/lockdep.c:5430) [ 124.176724][ C3] ? 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) [ 124.176888][ C3] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 124.177048][ C3] ? __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) [ 124.177210][ C3] ? __pfx___up_read (kernel/locking/rwsem.c:1339) [ 124.177391][ C3] ? 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) [ 124.177555][ C3] __x64_sys_sendto (net/socket.c:2199) [ 124.177717][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 124.177919][ C3] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 124.178084][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 124.178284][ C3] RIP: 0033:0x7febbca9285a [ 124.178450][ C3] 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 [ 124.179021][ C3] RSP: 002b:00007ffe22284c58 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 124.179265][ C3] RAX: ffffffffffffffda RBX: 0000000000000038 RCX: 00007febbca9285a [ 124.179503][ C3] RDX: 0000000000000040 RSI: 0000000001e10340 RDI: 0000000000000005 [ 124.179743][ C3] RBP: 00007ffe22284cb0 R08: 00000000004185e0 R09: 0000000000000010 [ 124.179981][ C3] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000054 Finger prints: __skb_checksum:__skb_checksum_complete:icmp_rcv:ip_protocol_deliver_rcu