====================================== | [ 37.740097][ T309] veth2: entered promiscuous mode | [ 45.225360][ C1] ------------[ cut here ]------------ | [ 45.225806][ C1] kernel BUG at net/core/skbuff.c:2813! | [ 45.226075][ C1] invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 45.226702][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.227203][ C1] RIP: 0010:__pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1)) [ 45.227499][ C1] Code: e9 52 f7 ff ff 48 8b 7c 24 38 be 02 00 00 00 e8 8e 9c ff ff 48 83 c4 58 31 c0 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 90 <0f> 0b 48 c7 44 24 38 00 00 00 00 e9 dc fa ff ff 84 c9 0f 84 4b f9 All code ======== 0: e9 52 f7 ff ff jmp 0xfffffffffffff757 5: 48 8b 7c 24 38 mov 0x38(%rsp),%rdi a: be 02 00 00 00 mov $0x2,%esi f: e8 8e 9c ff ff call 0xffffffffffff9ca2 14: 48 83 c4 58 add $0x58,%rsp 18: 31 c0 xor %eax,%eax 1a: 5b pop %rbx 1b: 41 5c pop %r12 1d: 41 5d pop %r13 1f: 41 5e pop %r14 21: 41 5f pop %r15 23: 5d pop %rbp 24: c3 ret 25: cc int3 26: cc int3 27: cc int3 28: cc int3 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 48 c7 44 24 38 00 00 movq $0x0,0x38(%rsp) 33: 00 00 35: e9 dc fa ff ff jmp 0xfffffffffffffb16 3a: 84 c9 test %cl,%cl 3c: 0f .byte 0xf 3d: 84 4b f9 test %cl,-0x7(%rbx) Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 48 c7 44 24 38 00 00 movq $0x0,0x38(%rsp) 9: 00 00 b: e9 dc fa ff ff jmp 0xfffffffffffffaec 10: 84 c9 test %cl,%cl 12: 0f .byte 0xf 13: 84 4b f9 test %cl,-0x7(%rbx) [ 45.228283][ C1] RSP: 0018:ffffc900001c89c8 EFLAGS: 00010282 [ 45.228560][ C1] RAX: 00000000fffffff2 RBX: ffff888003c93234 RCX: 0000000000000004 [ 45.228887][ C1] RDX: dffffc0000000000 RSI: 1ffff110008b3301 RDI: ffff888004599808 [ 45.229222][ C1] RBP: ffffc900001c8a48 R08: 0000000000000008 R09: ffff888003c9327c [ 45.229579][ C1] R10: ffff888003c93280 R11: 0000000000000000 R12: ffff888003c931c0 [ 45.229932][ C1] R13: ffff8880045984a0 R14: 0000000000000001 R15: ffffffff96bcddb0 [ 45.230272][ C1] FS: 00007fa696ce9300(0000) GS:ffff888036080000(0000) knlGS:0000000000000000 [ 45.230683][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.230973][ C1] CR2: 000000000041aad0 CR3: 0000000006020004 CR4: 0000000000770ef0 [ 45.231328][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 45.231665][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 45.231996][ C1] PKRU: 55555554 [ 45.232133][ C1] Call Trace: [ 45.232315][ C1] [ 45.232429][ C1] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) [ 45.232611][ C1] ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) [ 45.232780][ C1] ? __pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1)) [ 45.233021][ C1] ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) [ 45.233246][ C1] ? __pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1)) [ 45.233477][ C1] ? __pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1)) [ 45.233718][ C1] ? handle_invalid_op (arch/x86/kernel/traps.c:213) [ 45.233958][ C1] ? __pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1)) [ 45.234193][ C1] ? exc_invalid_op (arch/x86/kernel/traps.c:265) [ 45.234427][ C1] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 45.234677][ C1] ? __pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1)) [ 45.234929][ C1] ? __pskb_pull_tail (net/core/skbuff.c:2813) [ 45.235168][ C1] ? raw_v4_input (net/ipv4/raw.c:165) [ 45.235416][ C1] icmp_rcv (./include/linux/skbuff.h:2731 ./include/linux/skbuff.h:2739 ./include/linux/skbuff.h:2744 net/ipv4/icmp.c:1216) [ 45.235606][ C1] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 5)) [ 45.235855][ C1] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) [ 45.236099][ C1] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) [ 45.236338][ C1] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) [ 45.236572][ C1] ? ip_rcv_finish_core.constprop.0 (./include/net/net_namespace.h:383 ./include/linux/netdevice.h:2654 net/ipv4/ip_input.c:372) [ 45.236834][ C1] 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) [ 45.237004][ C1] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 45.237221][ C1] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 45.237449][ C1] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051) [ 45.237685][ C1] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 45.237906][ C1] __netif_receive_skb_one_core (net/core/dev.c:5610 (discriminator 4)) [ 45.238197][ C1] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5603) [ 45.238500][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 45.238724][ C1] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051) [ 45.238958][ C1] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:6053) [ 45.239187][ C1] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 45.239421][ C1] __napi_poll.constprop.0 (net/core/dev.c:6703) [ 45.239658][ C1] net_rx_action (net/core/dev.c:6772 net/core/dev.c:6886) [ 45.239888][ C1] ? __pfx_net_rx_action (net/core/dev.c:6850) [ 45.240128][ C1] ? hlock_class (kernel/locking/lockdep.c:223) [ 45.240359][ C1] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 45.240598][ C1] __do_softirq (kernel/softirq.c:553) [ 45.240821][ C1] ? netif_rx (./include/linux/bottom_half.h:33 net/core/dev.c:5195 net/core/dev.c:5184) [ 45.240933][ C1] do_softirq (kernel/softirq.c:454 kernel/softirq.c:441) [ 45.241056][ C1] [ 45.241130][ C1] [ 45.241203][ C1] __local_bh_enable_ip (kernel/softirq.c:381) [ 45.241350][ C1] netif_rx (net/core/dev.c:5197) [ 45.241458][ C1] dev_loopback_xmit (net/core/dev.c:3910) [ 45.241604][ C1] ip_mc_finish_output (net/ipv4/ip_output.c:363) [ 45.241753][ C1] ip_mc_output (./include/linux/netfilter.h:315 ./include/linux/netfilter.h:308 net/ipv4/ip_output.c:399) [ 45.241897][ C1] ip_push_pending_frames (./include/net/dst.h:450 ./include/net/dst.h:448 net/ipv4/ip_output.c:129 net/ipv4/ip_output.c:1496 net/ipv4/ip_output.c:1516) [ 45.242048][ C1] raw_sendmsg (net/ipv4/raw.c:648) [ 45.242192][ C1] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 45.242339][ C1] ? __pfx_raw_sendmsg (net/ipv4/raw.c:476) [ 45.242484][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 45.242632][ C1] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 45.242785][ C1] ? __lock_release (kernel/locking/lockdep.c:5430) [ 45.242943][ C1] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) [ 45.243102][ C1] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 45.243249][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 45.243391][ C1] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) [ 45.243535][ C1] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) [ 45.243696][ C1] ? __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) [ 45.243928][ C1] __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) [ 45.244162][ C1] ? __pfx___sys_sendto (net/socket.c:2161) [ 45.244406][ C1] ? __lock_release (kernel/locking/lockdep.c:5430) [ 45.244647][ C1] ? do_user_addr_fault (arch/x86/mm/fault.c:1436) [ 45.244898][ C1] ? __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) [ 45.245137][ C1] ? __pfx_find_vma (mm/mmap.c:1883) [ 45.245371][ C1] ? __pfx___up_read (kernel/locking/rwsem.c:1339) [ 45.245601][ C1] ? do_user_addr_fault (arch/x86/mm/fault.c:1436) [ 45.245821][ C1] __x64_sys_sendto (net/socket.c:2199) [ 45.246039][ C1] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 45.246292][ C1] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 45.246483][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 45.246784][ C1] RIP: 0033:0x7fa696fbf85a [ 45.247025][ C1] 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 [ 45.247828][ C1] RSP: 002b:00007ffd714bff78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 45.248150][ C1] RAX: ffffffffffffffda RBX: 0000000000000038 RCX: 00007fa696fbf85a [ 45.248522][ C1] RDX: 0000000000000040 RSI: 0000000000747340 RDI: 0000000000000005 [ 45.248878][ C1] RBP: 00007ffd714bffd0 R08: 00000000004185e0 R09: 0000000000000010 [ 45.249236][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000054 Finger prints: __pskb_pull_tail:icmp_rcv:ip_protocol_deliver_rcu:ip_local_deliver_finish