====================================== | [ 106.377157][ T875] IPv6: Can't replace route, no match found | [ 180.199235][ C3] ------------[ cut here ]------------ | [ 180.199606][ C3] kernel BUG at net/core/skbuff.c:3505! | [ 180.199808][ C3] invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 180.200245][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 180.200578][ C3] RIP: 0010:__skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 180.200747][ 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 [ 180.201271][ C3] RSP: 0018:ffffc90000278920 EFLAGS: 00010206 [ 180.201459][ C3] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 1ffff110010893d9 [ 180.201680][ C3] RDX: 00000000000000e4 RSI: 0000000000000000 RDI: ffff888008449ec8 [ 180.201901][ C3] RBP: 0000000000000000 R08: ffffc900002789e0 R09: fffffbfff302a5a2 [ 180.202121][ C3] R10: ffffffff98152d17 R11: ffffc90000278b20 R12: 0000000000000000 [ 180.202343][ C3] R13: 0000000000000000 R14: ffffc900002789e0 R15: ffff8880067e4ec8 [ 180.202564][ C3] FS: 00007fc28f058300(0000) GS:ffff888036180000(0000) knlGS:0000000000000000 [ 180.202823][ C3] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 180.203011][ C3] CR2: 00007ffd44491e00 CR3: 0000000005e40002 CR4: 0000000000770ef0 [ 180.203234][ C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 180.203455][ C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 180.203675][ C3] PKRU: 55555554 [ 180.203786][ C3] Call Trace: [ 180.203897][ C3] [ 180.203976][ C3] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) [ 180.204102][ C3] ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) [ 180.204216][ C3] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 180.204365][ C3] ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) [ 180.204510][ C3] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 180.204658][ C3] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 180.204805][ C3] ? handle_invalid_op (arch/x86/kernel/traps.c:213) [ 180.204951][ C3] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 180.205099][ C3] ? exc_invalid_op (arch/x86/kernel/traps.c:265) [ 180.205249][ C3] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 180.205406][ C3] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 180.205563][ C3] __skb_checksum_complete (net/core/skbuff.c:3643) [ 180.205713][ C3] ? __pfx___skb_checksum_complete (net/core/skbuff.c:3637) [ 180.205896][ C3] ? __pfx_csum_partial_ext (./include/net/checksum.h:120) [ 180.206043][ C3] ? __pfx_csum_block_add_ext (./include/net/checksum.h:103) [ 180.206191][ C3] icmp_rcv (./include/linux/skbuff.h:4567 net/ipv4/icmp.c:1213) [ 180.206305][ C3] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 5)) [ 180.206456][ C3] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) [ 180.206610][ C3] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) [ 180.206758][ C3] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) [ 180.206905][ C3] ? ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1136 ./include/linux/skbuff.h:1188 net/ipv4/ip_input.c:390) [ 180.207088][ 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) [ 180.207201][ C3] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 180.207349][ C3] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 180.207498][ C3] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051) [ 180.207647][ C3] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 180.207797][ C3] __netif_receive_skb_one_core (net/core/dev.c:5610 (discriminator 4)) [ 180.207982][ C3] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5603) [ 180.208166][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 180.208313][ C3] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051) [ 180.208465][ C3] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:6053) [ 180.208613][ C3] __napi_poll.constprop.0 (net/core/dev.c:6703) [ 180.208760][ C3] net_rx_action (net/core/dev.c:6772 net/core/dev.c:6886) [ 180.208909][ C3] ? __pfx_net_rx_action (net/core/dev.c:6850) [ 180.209059][ C3] ? usage_skip (kernel/locking/lockdep.c:2295 kernel/locking/lockdep.c:2263) [ 180.209209][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 180.209356][ C3] __do_softirq (kernel/softirq.c:553) [ 180.209504][ C3] ? __dev_queue_xmit (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:818 net/core/dev.c:4399) [ 180.209651][ C3] do_softirq (kernel/softirq.c:454 kernel/softirq.c:441) [ 180.209765][ C3] [ 180.209840][ C3] [ 180.209914][ C3] __local_bh_enable_ip (kernel/softirq.c:381) [ 180.210059][ C3] ? __dev_queue_xmit (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:818 net/core/dev.c:4399) [ 180.210207][ C3] __dev_queue_xmit (net/core/dev.c:4400) [ 180.210356][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 180.210503][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 180.210688][ C3] ? __pfx___dev_queue_xmit (net/core/dev.c:4281) [ 180.210841][ C3] ? neigh_resolve_output (net/core/neighbour.c:1558 net/core/neighbour.c:1543) [ 180.210993][ C3] ip_finish_output2 (./include/net/neighbour.h:540 net/ipv4/ip_output.c:235) [ 180.211140][ C3] ? ip_copy_metadata (./arch/x86/include/asm/atomic.h:79 ./include/linux/atomic/atomic-arch-fallback.h:2393 ./include/linux/atomic/atomic-instrumented.h:1468 ./include/linux/rcuref.h:67 ./include/net/dst.h:238 ./include/net/dst.h:252 ./include/net/dst.h:285 ./include/net/dst.h:290 net/ipv4/ip_output.c:560) [ 180.211286][ C3] ? __pfx_ip_finish_output2 (net/ipv4/ip_output.c:199) [ 180.211435][ C3] ? ip_fast_csum (lib/checksum.c:108) [ 180.211585][ C3] ? ip_fraglist_prepare (net/ipv4/ip_output.c:96 net/ipv4/ip_output.c:640) [ 180.211825][ C3] ? ip_skb_dst_mtu (./include/net/net_namespace.h:383 ./include/linux/netdevice.h:2654 ./include/net/ip.h:465 ./include/net/ip.h:502) [ 180.211974][ C3] ip_do_fragment (net/ipv4/ip_output.c:860) [ 180.212120][ C3] ? __pfx_ip_finish_output2 (net/ipv4/ip_output.c:199) [ 180.212269][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 180.212450][ C3] ? __pfx_ip_do_fragment (net/ipv4/ip_output.c:764) [ 180.212600][ C3] ? __pfx_get_random_u32 (drivers/char/random.c:532) [ 180.212748][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 180.212893][ C3] ? __pfx_raw_getfrag (net/ipv4/raw.c:446) [ 180.213129][ C3] ? ip_skb_dst_mtu (./include/net/net_namespace.h:383 ./include/linux/netdevice.h:2654 ./include/net/ip.h:465 ./include/net/ip.h:502) [ 180.213275][ 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) [ 180.213422][ C3] ip_output (./include/linux/netfilter.h:303 net/ipv4/ip_output.c:433) [ 180.213532][ C3] ? __ip_local_out (net/ipv4/ip_output.c:96 net/ipv4/ip_output.c:107) [ 180.213680][ C3] ? __pfx_ip_output (net/ipv4/ip_output.c:427) [ 180.213913][ C3] ? __ip_make_skb (net/ipv4/ip_output.c:1379 net/ipv4/ip_output.c:1487) [ 180.214064][ C3] ? __pfx_raw_getfrag (net/ipv4/raw.c:446) [ 180.214208][ C3] ? ip_append_data (net/ipv4/ip_output.c:1368 net/ipv4/ip_output.c:1347) [ 180.214356][ 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) [ 180.214591][ C3] raw_sendmsg (net/ipv4/raw.c:648) [ 180.214738][ C3] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 180.214884][ C3] ? __pfx_raw_sendmsg (net/ipv4/raw.c:476) [ 180.215031][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 180.215268][ C3] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 180.215416][ C3] ? __lock_release (kernel/locking/lockdep.c:5430) [ 180.215568][ C3] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) [ 180.215717][ C3] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 180.215952][ 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) [ 180.216101][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 180.216248][ C3] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) [ 180.216394][ C3] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) [ 180.216543][ C3] ? __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) [ 180.216784][ C3] __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) [ 180.216931][ C3] ? __pfx___sys_sendto (net/socket.c:2161) [ 180.217080][ 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) [ 180.217229][ C3] ? reacquire_held_locks (kernel/locking/lockdep.c:5279) [ 180.217378][ C3] ? __lock_release (kernel/locking/lockdep.c:5430) [ 180.217524][ 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) [ 180.217670][ C3] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 180.217815][ 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) [ 180.218052][ C3] ? __pfx___up_read (kernel/locking/rwsem.c:1339) [ 180.218198][ 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) [ 180.218349][ C3] __x64_sys_sendto (net/socket.c:2199) [ 180.218495][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 180.218768][ C3] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 180.218914][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 180.219100][ C3] RIP: 0033:0x7fc28f32e85a [ 180.219253][ 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 [ 180.219776][ C3] RSP: 002b:00007ffd44492848 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 180.220091][ C3] RAX: ffffffffffffffda RBX: 00000000000005dc RCX: 00007fc28f32e85a [ 180.220310][ C3] RDX: 00000000000005e4 RSI: 0000000001de0340 RDI: 0000000000000005 [ 180.220529][ C3] RBP: 00007ffd444928a0 R08: 00000000004185e0 R09: 0000000000000010 [ 180.220931][ C3] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000005f8 Finger prints: __skb_checksum:__skb_checksum_complete:icmp_rcv:ip_protocol_deliver_rcu