====================================== | xx__-> [ 10.226712][ T166] ------------[ cut here ]------------ | [ 10.226932][ T166] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: unshare/166 | [ 10.227212][ T166] Modules linked in: | [ 10.227690][ T166] Tainted: [W]=WARN [ 10.227795][ T166] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.227972][ T166] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 10.228149][ T166] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 38 ff f0 ff b9 a6 ff ff All code ======== 0: 89 fa mov %edi,%edx 2: 48 c1 ea 03 shr $0x3,%rdx 6: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx a: 48 89 f8 mov %rdi,%rax d: 83 e0 07 and $0x7,%eax 10: 83 c0 03 add $0x3,%eax 13: 38 d0 cmp %dl,%al 15: 7c 04 jl 0x1b 17: 84 d2 test %dl,%dl 19: 75 79 jne 0x94 1b: 48 8b 44 24 58 mov 0x58(%rsp),%rax 20: 44 8b 48 08 mov 0x8(%rax),%r9d 24: e9 42 ff ff ff jmp 0xffffffffffffff6b 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: ba 02 00 00 00 mov $0x2,%edx 32: 48 89 de mov %rbx,%rsi 35: 31 ff xor %edi,%edi 37: e8 38 ff f0 ff call 0xfffffffffff0ff74 3c: b9 .byte 0xb9 3d: a6 cmpsb (%rdi),(%rsi) 3e: ff (bad) 3f: ff .byte 0xff Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: ba 02 00 00 00 mov $0x2,%edx 8: 48 89 de mov %rbx,%rsi b: 31 ff xor %edi,%edi d: e8 38 ff f0 ff call 0xfffffffffff0ff4a 12: b9 .byte 0xb9 13: a6 cmpsb (%rdi),(%rsi) 14: ff (bad) 15: ff .byte 0xff [ 10.228632][ T166] RSP: 0018:ffa00000007e7ab0 EFLAGS: 00010286 [ 10.228857][ T166] RAX: 00000000ffffffa6 RBX: ff110000026d27c0 RCX: 1ff40000000fcf1c [ 10.229062][ T166] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff110000026d2870 [ 10.229268][ T166] RBP: ff1100000c62c000 R08: 1fe22000004da50f R09: ff1100000d11d180 [ 10.229469][ T166] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff [ 10.229678][ T166] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000c62c000 [ 10.229887][ T166] FS: 00007fd45df42740(0000) GS:ff110000851d3000(0000) knlGS:0000000000000000 [ 10.230130][ T166] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 10.230311][ T166] CR2: 000055a8d86c7310 CR3: 000000000b26b002 CR4: 0000000000771ef0 [ 10.230519][ T166] PKRU: 55555554 [ 10.230623][ T166] Call Trace: [ 10.230725][ T166] [ 10.230797][ T166] ? ip6_route_dev_notify (net/ipv6/route.c:6484) [ 10.230943][ T166] rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551) [ 10.231088][ T166] ? notifier_call_chain (kernel/notifier.c:85) [ 10.231225][ T166] rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560) [ 10.231335][ T166] register_netdevice (net/core/dev.c:11488) [ 10.231471][ T166] ? unregister_netdevice_queue (./include/linux/list.h:162) [ 10.231646][ T166] register_netdev (net/core/dev.c:11552) [ 10.231777][ T166] loopback_net_init (drivers/net/loopback.c:218) [ 10.231915][ T166] ops_init (net/core/net_namespace.c:137) [ 10.232021][ T166] setup_net (net/core/net_namespace.c:446) [ 10.232121][ T166] ? unregister_pernet_device (net/core/net_namespace.c:1503) [ 10.232257][ T166] ? lockdep_init_map_type (kernel/locking/lockdep.c:4973) [ 10.232392][ T166] ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185) [ 10.232533][ T166] copy_net_ns (net/core/net_namespace.c:579) [ 10.232669][ T166] create_new_namespaces (kernel/nsproxy.c:132) [ 10.232811][ T166] unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4)) [ 10.232955][ T166] ksys_unshare (kernel/fork.c:3243) [ 10.233095][ T166] ? walk_process_tree (kernel/fork.c:3036 (discriminator 19)) [ 10.233231][ T166] __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315) [ 10.233364][ T166] ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89) [ 10.233503][ T166] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 10.233635][ T166] ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1)) [ 10.233769][ T166] ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3)) [ 10.234006][ T166] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 10.234178][ T166] RIP: 0033:0x7fd45e03dbcb [ 10.234324][ T166] Code: 73 01 c3 48 8b 0d 2d 82 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d fd 81 0f 00 f7 d8 64 89 01 48 All code ======== 0: 73 01 jae 0x3 2: c3 ret 3: 48 8b 0d 2d 82 0f 00 mov 0xf822d(%rip),%rcx # 0xf8237 a: f7 d8 neg %eax c: 64 89 01 mov %eax,%fs:(%rcx) f: 48 83 c8 ff or $0xffffffffffffffff,%rax 13: c3 ret 14: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) 1b: 00 00 00 1e: 90 nop 1f: f3 0f 1e fa endbr64 23: b8 10 01 00 00 mov $0x110,%eax 28: 0f 05 syscall 2a:* 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction 30: 73 01 jae 0x33 32: c3 ret 33: 48 8b 0d fd 81 0f 00 mov 0xf81fd(%rip),%rcx # 0xf8237 3a: f7 d8 neg %eax 3c: 64 89 01 mov %eax,%fs:(%rcx) 3f: 48 rex.W Code starting with the faulting instruction =========================================== 0: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax 6: 73 01 jae 0x9 8: c3 ret 9: 48 8b 0d fd 81 0f 00 mov 0xf81fd(%rip),%rcx # 0xf820d 10: f7 d8 neg %eax 12: 64 89 01 mov %eax,%fs:(%rcx) 15: 48 rex.W [ 10.234905][ T166] RSP: 002b:00007fff0a5da9d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 [ 10.235200][ T166] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd45e03dbcb [ 10.235400][ T166] RDX: 0000000000000000 RSI: 00007fff0a5da740 RDI: 0000000040000000 [ 10.235607][ T166] RBP: 00007fff0a5dad60 R08: 00007fff0a5da930 R09: 0000000000000000 [ 10.235895][ T166] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000 [ 10.236101][ T166] R13: 0000000000000000 R14: 00000000ffffffff R15: 000055a8d86cab68 | [ 10.271722][ T166] ------------[ cut here ]------------ | [ 10.271946][ T166] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: packetdrill/166 | [ 10.272267][ T166] Modules linked in: | [ 10.272834][ T166] Tainted: [W]=WARN [ 10.272969][ T166] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.273180][ T166] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 10.273394][ T166] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 38 ff f0 ff b9 a6 ff ff All code ======== 0: 89 fa mov %edi,%edx 2: 48 c1 ea 03 shr $0x3,%rdx 6: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx a: 48 89 f8 mov %rdi,%rax d: 83 e0 07 and $0x7,%eax 10: 83 c0 03 add $0x3,%eax 13: 38 d0 cmp %dl,%al 15: 7c 04 jl 0x1b 17: 84 d2 test %dl,%dl 19: 75 79 jne 0x94 1b: 48 8b 44 24 58 mov 0x58(%rsp),%rax 20: 44 8b 48 08 mov 0x8(%rax),%r9d 24: e9 42 ff ff ff jmp 0xffffffffffffff6b 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: ba 02 00 00 00 mov $0x2,%edx 32: 48 89 de mov %rbx,%rsi 35: 31 ff xor %edi,%edi 37: e8 38 ff f0 ff call 0xfffffffffff0ff74 3c: b9 .byte 0xb9 3d: a6 cmpsb (%rdi),(%rsi) 3e: ff (bad) 3f: ff .byte 0xff Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: ba 02 00 00 00 mov $0x2,%edx 8: 48 89 de mov %rbx,%rsi b: 31 ff xor %edi,%edi d: e8 38 ff f0 ff call 0xfffffffffff0ff4a 12: b9 .byte 0xb9 13: a6 cmpsb (%rdi),(%rsi) 14: ff (bad) 15: ff .byte 0xff [ 10.274045][ T166] RSP: 0018:ffa00000007e7b58 EFLAGS: 00010286 [ 10.274258][ T166] RAX: 00000000ffffffa6 RBX: ff110000094f5e40 RCX: 1ff40000000fcf31 [ 10.274506][ T166] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff110000094f5ef0 [ 10.274759][ T166] RBP: ff1100000b030000 R08: 1fe220000129ebdf R09: ff1100000d11d158 [ 10.275041][ T166] R10: 0000000000000001 R11: 0000000000000001 R12: 00000000ffffffff [ 10.275338][ T166] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000b030000 [ 10.275645][ T166] FS: 0000000015d0f400(0000) GS:ff11000085253000(0000) knlGS:0000000000000000 [ 10.275944][ T166] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 10.276142][ T166] CR2: 00007f1a27673000 CR3: 000000000c6ae001 CR4: 0000000000771ef0 [ 10.276384][ T166] PKRU: 55555554 [ 10.276509][ T166] Call Trace: [ 10.276627][ T166] [ 10.276719][ T166] ? ip6_route_dev_notify (./include/net/net_namespace.h:419 (discriminator 1) ./include/linux/netdevice.h:2776 (discriminator 1) net/ipv6/route.c:6476 (discriminator 1)) [ 10.276889][ T166] rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551) [ 10.277077][ T166] ? notifier_call_chain (kernel/notifier.c:85) [ 10.277253][ T166] rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560) [ 10.277378][ T166] register_netdevice (net/core/dev.c:11488) [ 10.277544][ T166] ? unregister_netdevice_queue (./include/linux/list.h:162) [ 10.277749][ T166] ? alloc_netdev_mqs (net/core/dev.c:12133) [ 10.277955][ T166] tun_set_iff.constprop.0 (drivers/net/tun.c:2876) [ 10.278142][ T166] ? tun_attach.isra.0 (./include/linux/ptr_ring.h:601) [ 10.278322][ T166] ? tun_get (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) drivers/net/tun.c:803 (discriminator 2)) [ 10.278451][ T166] __tun_chr_ioctl (drivers/net/tun.c:3157) [ 10.278644][ T166] ? build_open_flags (fs/open.c:1212) [ 10.278805][ T166] ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) [ 10.278967][ T166] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 10.279131][ T166] ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381) [ 10.279302][ T166] ? fput_close_sync (fs/file_table.c:615) [ 10.279494][ T166] ? __ia32_sys_open (fs/open.c:1374) [ 10.279690][ T166] __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583) [ 10.279888][ T166] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 10.280086][ T166] ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1)) [ 10.280266][ T166] ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3)) [ 10.280434][ T166] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 10.280681][ T166] RIP: 0033:0x47cc8d [ 10.280815][ T166] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00 All code ======== 0: 04 25 add $0x25,%al 2: 28 00 sub %al,(%rax) 4: 00 00 add %al,(%rax) 6: 48 89 45 c8 mov %rax,-0x38(%rbp) a: 31 c0 xor %eax,%eax c: 48 8d 45 10 lea 0x10(%rbp),%rax 10: c7 45 b0 10 00 00 00 movl $0x10,-0x50(%rbp) 17: 48 89 45 b8 mov %rax,-0x48(%rbp) 1b: 48 8d 45 d0 lea -0x30(%rbp),%rax 1f: 48 89 45 c0 mov %rax,-0x40(%rbp) 23: b8 10 00 00 00 mov $0x10,%eax 28: 0f 05 syscall 2a:* 89 c2 mov %eax,%edx <-- trapping instruction 2c: 3d 00 f0 ff ff cmp $0xfffff000,%eax 31: 77 1a ja 0x4d 33: 48 8b 45 c8 mov -0x38(%rbp),%rax 37: 64 48 2b 04 25 28 00 sub %fs:0x28,%rax 3e: 00 00 Code starting with the faulting instruction =========================================== 0: 89 c2 mov %eax,%edx 2: 3d 00 f0 ff ff cmp $0xfffff000,%eax 7: 77 1a ja 0x23 9: 48 8b 45 c8 mov -0x38(%rbp),%rax d: 64 48 2b 04 25 28 00 sub %fs:0x28,%rax 14: 00 00 [ 10.281416][ T166] RSP: 002b:00007ffed240c540 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 10.281680][ T166] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 000000000047cc8d [ 10.281949][ T166] RDX: 00007ffed240c5c0 RSI: 00000000400454ca RDI: 0000000000000005 [ 10.282215][ T166] RBP: 00007ffed240c590 R08: 0000000000000000 R09: 0000000000000000 [ 10.282494][ T166] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffed240ca98 [ 10.282758][ T166] R13: 00007ffed240cb20 R14: 0000000000000002 R15: 0000000000543540 | [ 10.285286][ T166] ------------[ cut here ]------------ | [ 10.285505][ T166] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: packetdrill/166 | [ 10.285825][ T166] Modules linked in: | [ 10.286363][ T166] Tainted: [W]=WARN [ 10.286487][ T166] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.286686][ T166] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 10.286919][ T166] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 38 ff f0 ff b9 a6 ff ff All code ======== 0: 89 fa mov %edi,%edx 2: 48 c1 ea 03 shr $0x3,%rdx 6: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx a: 48 89 f8 mov %rdi,%rax d: 83 e0 07 and $0x7,%eax 10: 83 c0 03 add $0x3,%eax 13: 38 d0 cmp %dl,%al 15: 7c 04 jl 0x1b 17: 84 d2 test %dl,%dl 19: 75 79 jne 0x94 1b: 48 8b 44 24 58 mov 0x58(%rsp),%rax 20: 44 8b 48 08 mov 0x8(%rax),%r9d 24: e9 42 ff ff ff jmp 0xffffffffffffff6b 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: ba 02 00 00 00 mov $0x2,%edx 32: 48 89 de mov %rbx,%rsi 35: 31 ff xor %edi,%edi 37: e8 38 ff f0 ff call 0xfffffffffff0ff74 3c: b9 .byte 0xb9 3d: a6 cmpsb (%rdi),(%rsi) 3e: ff (bad) 3f: ff .byte 0xff Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: ba 02 00 00 00 mov $0x2,%edx 8: 48 89 de mov %rbx,%rsi b: 31 ff xor %edi,%edi d: e8 38 ff f0 ff call 0xfffffffffff0ff4a 12: b9 .byte 0xb9 13: a6 cmpsb (%rdi),(%rsi) 14: ff (bad) 15: ff .byte 0xff [ 10.287530][ T166] RSP: 0018:ffa00000007e7c58 EFLAGS: 00010286 [ 10.287768][ T166] RAX: 00000000ffffffa6 RBX: ff110000094f5b40 RCX: 1ff40000000fcf51 [ 10.288052][ T166] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff110000094f5bf0 [ 10.288337][ T166] RBP: ff1100000b030000 R08: 1fe220000129eb7f R09: ff1100000d11d158 [ 10.288623][ T166] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000 [ 10.288896][ T166] R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000001 [ 10.289148][ T166] FS: 0000000015d0f400(0000) GS:ff11000085253000(0000) knlGS:0000000000000000 [ 10.289446][ T166] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 10.289668][ T166] CR2: 00007f1a27673000 CR3: 000000000c6ae001 CR4: 0000000000771ef0 [ 10.289911][ T166] PKRU: 55555554 [ 10.290029][ T166] Call Trace: [ 10.290157][ T166] [ 10.290258][ T166] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 10.290426][ T166] rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121) [ 10.290603][ T166] notifier_call_chain (kernel/notifier.c:85) [ 10.290795][ T166] netdev_update_features (net/core/dev.c:2287 net/core/dev.c:2301 net/core/dev.c:1590 net/core/dev.c:11099 net/core/dev.c:11096) [ 10.290978][ T166] ? netdev_sync_lower_features (net/core/dev.c:10883) [ 10.291179][ T166] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) [ 10.291360][ T166] ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) [ 10.291562][ T166] ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1)) [ 10.291754][ T166] ? update_socket_protocol+0x10/0x10 [ 10.291952][ T166] ? alloc_file_clone (fs/file_table.c:477) [ 10.292147][ T166] __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583) [ 10.292341][ T166] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 10.292546][ T166] ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1)) [ 10.292736][ T166] ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3)) [ 10.292932][ T166] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 10.293244][ T166] RIP: 0033:0x47cc8d [ 10.293371][ T166] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00 All code ======== 0: 04 25 add $0x25,%al 2: 28 00 sub %al,(%rax) 4: 00 00 add %al,(%rax) 6: 48 89 45 c8 mov %rax,-0x38(%rbp) a: 31 c0 xor %eax,%eax c: 48 8d 45 10 lea 0x10(%rbp),%rax 10: c7 45 b0 10 00 00 00 movl $0x10,-0x50(%rbp) 17: 48 89 45 b8 mov %rax,-0x48(%rbp) 1b: 48 8d 45 d0 lea -0x30(%rbp),%rax 1f: 48 89 45 c0 mov %rax,-0x40(%rbp) 23: b8 10 00 00 00 mov $0x10,%eax 28: 0f 05 syscall 2a:* 89 c2 mov %eax,%edx <-- trapping instruction 2c: 3d 00 f0 ff ff cmp $0xfffff000,%eax 31: 77 1a ja 0x4d 33: 48 8b 45 c8 mov -0x38(%rbp),%rax 37: 64 48 2b 04 25 28 00 sub %fs:0x28,%rax 3e: 00 00 Code starting with the faulting instruction =========================================== 0: 89 c2 mov %eax,%edx 2: 3d 00 f0 ff ff cmp $0xfffff000,%eax 7: 77 1a ja 0x23 9: 48 8b 45 c8 mov -0x38(%rbp),%rax d: 64 48 2b 04 25 28 00 sub %fs:0x28,%rax 14: 00 00 [ 10.294096][ T166] RSP: 002b:00007ffed240c580 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 10.294337][ T166] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 000000000047cc8d [ 10.294712][ T166] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005 [ 10.294972][ T166] RBP: 00007ffed240c5d0 R08: 0000000000000005 R09: 0000000000001ff0 [ 10.295214][ T166] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffed240ca98 [ 10.295583][ T166] R13: 00007ffed240cb20 R14: 0000000000000002 R15: 0000000000543540 | [ 10.298500][ T166] ------------[ cut here ]------------ | [ 10.298704][ T166] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: packetdrill/166 | [ 10.299072][ T166] Modules linked in: | [ 10.299781][ T166] Tainted: [W]=WARN [ 10.299918][ T166] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.300294][ T166] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 10.300530][ T166] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 38 ff f0 ff b9 a6 ff ff All code ======== 0: 89 fa mov %edi,%edx 2: 48 c1 ea 03 shr $0x3,%rdx 6: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx a: 48 89 f8 mov %rdi,%rax d: 83 e0 07 and $0x7,%eax 10: 83 c0 03 add $0x3,%eax 13: 38 d0 cmp %dl,%al 15: 7c 04 jl 0x1b 17: 84 d2 test %dl,%dl 19: 75 79 jne 0x94 1b: 48 8b 44 24 58 mov 0x58(%rsp),%rax 20: 44 8b 48 08 mov 0x8(%rax),%r9d 24: e9 42 ff ff ff jmp 0xffffffffffffff6b 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: ba 02 00 00 00 mov $0x2,%edx 32: 48 89 de mov %rbx,%rsi 35: 31 ff xor %edi,%edi 37: e8 38 ff f0 ff call 0xfffffffffff0ff74 3c: b9 .byte 0xb9 3d: a6 cmpsb (%rdi),(%rsi) 3e: ff (bad) 3f: ff .byte 0xff Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: ba 02 00 00 00 mov $0x2,%edx 8: 48 89 de mov %rbx,%rsi b: 31 ff xor %edi,%edi d: e8 38 ff f0 ff call 0xfffffffffff0ff4a 12: b9 .byte 0xb9 13: a6 cmpsb (%rdi),(%rsi) 14: ff (bad) 15: ff .byte 0xff [ 10.301310][ T166] RSP: 0018:ffa00000007e7850 EFLAGS: 00010286 [ 10.301558][ T166] RAX: 00000000ffffffa6 RBX: ff110000094f56c0 RCX: 1ff40000000fced0 [ 10.302000][ T166] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff110000094f5770 [ 10.302310][ T166] RBP: ff1100000b030000 R08: 1fe220000129eaef R09: ff1100000d11d158 [ 10.302631][ T166] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001 [ 10.303089][ T166] R13: 0000000000000000 R14: 0000000000000000 R15: ff11000005868900 [ 10.303378][ T166] FS: 0000000015d0f400(0000) GS:ff11000085253000(0000) knlGS:0000000000000000 [ 10.303867][ T166] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 10.304106][ T166] CR2: 00007f1a27673000 CR3: 000000000c6ae001 CR4: 0000000000771ef0 [ 10.304395][ T166] PKRU: 55555554 [ 10.304539][ T166] Call Trace: [ 10.304827][ T166] [ 10.304928][ T166] rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551) [ 10.305107][ T166] rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560) [ 10.305265][ T166] ? mark_held_locks (kernel/locking/lockdep.c:4325) [ 10.305471][ T166] __dev_notify_flags (net/core/dev.c:9787) [ 10.305847][ T166] ? netif_change_name (net/core/dev.c:1495) [ 10.306052][ T166] ? __dev_change_flags (net/core/dev.c:9752) [ 10.306227][ T166] ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1)) [ 10.306394][ T166] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1)) [ 10.306727][ T166] netif_change_flags (net/core/dev.c:9820) [ 10.306898][ T166] ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22)) [ 10.307076][ T166] dev_change_flags (net/core/dev_api.c:68) [ 10.307254][ T166] devinet_ioctl (net/ipv4/devinet.c:1199) [ 10.307594][ T166] ? inet_ifa_byprefix (net/ipv4/devinet.c:619 (discriminator 9)) [ 10.307772][ T166] ? _copy_from_user (./include/linux/instrumented.h:146 ./include/linux/uaccess.h:184 lib/usercopy.c:18) [ 10.307975][ T166] inet_ioctl (net/ipv4/af_inet.c:1011) [ 10.308113][ T166] ? inet_dgram_connect (net/ipv4/af_inet.c:589) [ 10.308422][ T166] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 10.308623][ T166] ? __might_fault (mm/memory.c:7340 (discriminator 5)) [ 10.308793][ T166] ? __might_fault (mm/memory.c:7340 (discriminator 5)) [ 10.309265][ T166] sock_do_ioctl (net/socket.c:1313) [ 10.309638][ T166] ? __sock_recv_cmsgs (./include/net/sock.h:2867) [ 10.309847][ T166] ? ioctl_file_clone (fs/ioctl.c:244) [ 10.310036][ T166] sock_ioctl (net/socket.c:1434) [ 10.310176][ T166] ? br_ioctl_call (net/socket.c:1279) [ 10.310507][ T166] ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1)) [ 10.310683][ T166] ? update_socket_protocol+0x10/0x10 [ 10.310856][ T166] ? alloc_file_clone (fs/file_table.c:477) [ 10.311060][ T166] __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583) [ 10.311357][ T166] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 10.311537][ T166] ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1)) [ 10.311713][ T166] ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3)) [ 10.311884][ T166] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 10.312235][ T166] RIP: 0033:0x47cc8d [ 10.312389][ T166] Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00 All code ======== 0: 04 25 add $0x25,%al 2: 28 00 sub %al,(%rax) 4: 00 00 add %al,(%rax) 6: 48 89 45 c8 mov %rax,-0x38(%rbp) a: 31 c0 xor %eax,%eax c: 48 8d 45 10 lea 0x10(%rbp),%rax 10: c7 45 b0 10 00 00 00 movl $0x10,-0x50(%rbp) 17: 48 89 45 b8 mov %rax,-0x48(%rbp) 1b: 48 8d 45 d0 lea -0x30(%rbp),%rax 1f: 48 89 45 c0 mov %rax,-0x40(%rbp) 23: b8 10 00 00 00 mov $0x10,%eax 28: 0f 05 syscall 2a:* 89 c2 mov %eax,%edx <-- trapping instruction 2c: 3d 00 f0 ff ff cmp $0xfffff000,%eax 31: 77 1a ja 0x4d 33: 48 8b 45 c8 mov -0x38(%rbp),%rax 37: 64 48 2b 04 25 28 00 sub %fs:0x28,%rax 3e: 00 00 Code starting with the faulting instruction =========================================== 0: 89 c2 mov %eax,%edx 2: 3d 00 f0 ff ff cmp $0xfffff000,%eax 7: 77 1a ja 0x23 9: 48 8b 45 c8 mov -0x38(%rbp),%rax d: 64 48 2b 04 25 28 00 sub %fs:0x28,%rax 14: 00 00 [ 10.313227][ T166] RSP: 002b:00007ffed240c560 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 10.313570][ T166] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 000000000047cc8d [ 10.313846][ T166] RDX: 00007ffed240c5d0 RSI: 0000000000008914 RDI: 0000000000000006 [ 10.314270][ T166] RBP: 00007ffed240c5b0 R08: 0000000000000005 R09: 0000000000001ff0 [ 10.314547][ T166] R10: 0000000000000003 R11: 0000000000000246 R12: 00007ffed240ca98 [ 10.314949][ T166] R13: 00007ffed240cb20 R14: 0000000000000002 R15: 0000000000543540 | [ 99.969178][ T166] ------------[ cut here ]------------ | [ 99.969414][ T166] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: packetdrill/166 | [ 99.969706][ T166] Modules linked in: | [ 99.970132][ T166] Tainted: [W]=WARN [ 99.970301][ T166] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 99.970601][ T166] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 99.970779][ T166] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 38 ff f0 ff b9 a6 ff ff All code ======== 0: 89 fa mov %edi,%edx 2: 48 c1 ea 03 shr $0x3,%rdx 6: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx a: 48 89 f8 mov %rdi,%rax d: 83 e0 07 and $0x7,%eax 10: 83 c0 03 add $0x3,%eax 13: 38 d0 cmp %dl,%al 15: 7c 04 jl 0x1b 17: 84 d2 test %dl,%dl 19: 75 79 jne 0x94 1b: 48 8b 44 24 58 mov 0x58(%rsp),%rax 20: 44 8b 48 08 mov 0x8(%rax),%r9d 24: e9 42 ff ff ff jmp 0xffffffffffffff6b 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: ba 02 00 00 00 mov $0x2,%edx 32: 48 89 de mov %rbx,%rsi 35: 31 ff xor %edi,%edi 37: e8 38 ff f0 ff call 0xfffffffffff0ff74 3c: b9 .byte 0xb9 3d: a6 cmpsb (%rdi),(%rsi) 3e: ff (bad) 3f: ff .byte 0xff Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: ba 02 00 00 00 mov $0x2,%edx 8: 48 89 de mov %rbx,%rsi b: 31 ff xor %edi,%edi d: e8 38 ff f0 ff call 0xfffffffffff0ff4a 12: b9 .byte 0xb9 13: a6 cmpsb (%rdi),(%rsi) 14: ff (bad) 15: ff .byte 0xff [ 99.971258][ T166] RSP: 0018:ffa00000007e76f0 EFLAGS: 00010286 [ 99.971423][ T166] RAX: 00000000ffffffa6 RBX: ff1100000a8544c0 RCX: 1ff40000000fcea4 [ 99.971694][ T166] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000a854570 [ 99.971891][ T166] RBP: ff1100000b030000 R08: 1fe220000150a8af R09: ff1100000d11d158 [ 99.972086][ T166] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000041 [ 99.972287][ T166] R13: 0000000000000000 R14: 0000000000000000 R15: ffa00000007e7790 [ 99.972589][ T166] FS: 0000000000000000(0000) GS:ff11000085253000(0000) knlGS:0000000000000000 [ 99.972819][ T166] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 99.973044][ T166] CR2: 00007f1a27673000 CR3: 0000000034939004 CR4: 0000000000771ef0 [ 99.973306][ T166] PKRU: 55555554 [ 99.973410][ T166] Call Trace: [ 99.973602][ T166] [ 99.973672][ T166] rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551) [ 99.973807][ T166] rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560) [ 99.973905][ T166] netif_close_many (net/core/dev.c:1804) [ 99.974037][ T166] ? asym_cpu_capacity_scan (./include/linux/rculist.h:103) [ 99.974177][ T166] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1)) [ 99.974362][ T166] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 99.974572][ T166] ? __dev_close_many (net/core/dev.c:1781) [ 99.974705][ T166] ? netif_close_many_and_unlock (net/core/dev.c:12330) [ 99.974868][ T166] unregister_netdevice_many_notify (net/core/dev.c:12406) [ 99.975033][ T166] ? select_fallback_rq (kernel/sched/sched.h:1383) [ 99.975165][ T166] ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3)) [ 99.975327][ T166] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 99.975457][ T166] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 99.975686][ T166] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535) [ 99.975819][ T166] ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2)) [ 99.975951][ T166] unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299) [ 99.976082][ T166] ? mark_held_locks (kernel/locking/lockdep.c:4325) [ 99.976218][ T166] ? unregister_netdevice_many (net/core/dev.c:12497) [ 99.976350][ T166] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 99.976539][ T166] ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6)) [ 99.976674][ T166] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) [ 99.976808][ T166] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) [ 99.976937][ T166] __fput (fs/file_table.c:510) [ 99.977040][ T166] task_work_run (kernel/task_work.c:233) [ 99.977171][ T166] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 99.977302][ T166] ? task_work_cancel (kernel/task_work.c:190) [ 99.977431][ T166] ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377) [ 99.977628][ T166] do_exit (./include/linux/task_work.h:40 kernel/exit.c:976) [ 99.977729][ T166] ? exit_notify (kernel/exit.c:748) [ 99.977858][ T166] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 99.977989][ T166] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535) [ 99.978119][ T166] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 99.978250][ T166] do_group_exit (kernel/exit.c:1119) [ 99.978385][ T166] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2)) [ 99.978612][ T166] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 99.978746][ T166] ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206) [ 99.978874][ T166] ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1)) [ 99.979009][ T166] get_signal (kernel/signal.c:3037) [ 99.979141][ T166] ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4)) [ 99.979273][ T166] ? __ia32_sys_getpeername (net/socket.c:2219) [ 99.979400][ T166] ? __might_fault (mm/memory.c:7340 (discriminator 5)) [ 99.979596][ T166] ? ptrace_signal (./include/linux/signal.h:87) [ 99.979730][ T166] arch_do_signal_or_restart (arch/x86/kernel/signal.c:337) [ 99.979863][ T166] ? get_sigframe_size (arch/x86/kernel/signal.c:233) [ 99.979996][ T166] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 99.980126][ T166] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 99.980290][ T166] exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98) [ 99.980423][ T166] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 99.980619][ T166] do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100) [ 99.980750][ T166] ? irq_exit_rcu (kernel/softirq.c:754) [ 99.980914][ T166] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 99.981078][ T166] RIP: 0033:0x4c2d9e [ 99.981188][ T166] Code: Unable to access opcode bytes at 0x4c2d74. Code starting with the faulting instruction =========================================== [ 99.981384][ T166] RSP: 002b:00007ffed240bef0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 99.981661][ T166] RAX: 0000000000000014 RBX: 0000000000000012 RCX: 00000000004c2d9e [ 99.981867][ T166] RDX: 0000000000000014 RSI: 00007ffed240bfd0 RDI: 0000000000000007 [ 99.982067][ T166] RBP: 00007ffed240bf00 R08: 00007ffed240bf90 R09: 000000000000000c [ 99.982273][ T166] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffed240ca98 [ 99.982470][ T166] R13: 00007ffed240cb20 R14: 00007ffed240c0c0 R15: 0000000000543540 | [ 99.996216][ T166] ------------[ cut here ]------------ | [ 99.996398][ T166] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: packetdrill/166 | [ 99.996692][ T166] Modules linked in: | [ 99.997092][ T166] Tainted: [W]=WARN [ 99.997191][ T166] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 99.997357][ T166] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 99.997529][ T166] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 38 ff f0 ff b9 a6 ff ff All code ======== 0: 89 fa mov %edi,%edx 2: 48 c1 ea 03 shr $0x3,%rdx 6: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx a: 48 89 f8 mov %rdi,%rax d: 83 e0 07 and $0x7,%eax 10: 83 c0 03 add $0x3,%eax 13: 38 d0 cmp %dl,%al 15: 7c 04 jl 0x1b 17: 84 d2 test %dl,%dl 19: 75 79 jne 0x94 1b: 48 8b 44 24 58 mov 0x58(%rsp),%rax 20: 44 8b 48 08 mov 0x8(%rax),%r9d 24: e9 42 ff ff ff jmp 0xffffffffffffff6b 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: ba 02 00 00 00 mov $0x2,%edx 32: 48 89 de mov %rbx,%rsi 35: 31 ff xor %edi,%edi 37: e8 38 ff f0 ff call 0xfffffffffff0ff74 3c: b9 .byte 0xb9 3d: a6 cmpsb (%rdi),(%rsi) 3e: ff (bad) 3f: ff .byte 0xff Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: ba 02 00 00 00 mov $0x2,%edx 8: 48 89 de mov %rbx,%rsi b: 31 ff xor %edi,%edi d: e8 38 ff f0 ff call 0xfffffffffff0ff4a 12: b9 .byte 0xb9 13: a6 cmpsb (%rdi),(%rsi) 14: ff (bad) 15: ff .byte 0xff [ 99.997996][ T166] RSP: 0018:ffa00000007e7820 EFLAGS: 00010286 [ 99.998158][ T166] RAX: 00000000ffffffa6 RBX: ff1100000a8553c0 RCX: 1ff40000000fceca [ 99.998353][ T166] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000a855470 [ 99.998560][ T166] RBP: ff1100000b030000 R08: 1fe220000150aa8f R09: ff1100000d11d158 [ 99.998756][ T166] R10: 0000000000000001 R11: 0000000000000001 R12: 00000000ffffffff [ 99.998949][ T166] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 [ 99.999150][ T166] FS: 0000000000000000(0000) GS:ff11000085253000(0000) knlGS:0000000000000000 [ 99.999406][ T166] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 99.999599][ T166] CR2: 00007f1a27673000 CR3: 0000000034939004 CR4: 0000000000771ef0 [ 99.999808][ T166] PKRU: 55555554 [ 99.999902][ T166] Call Trace: [ 99.999998][ T166] [ 100.000069][ T166] unregister_netdevice_many_notify (net/core/dev.c:12439) [ 100.000236][ T166] ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3)) [ 100.000393][ T166] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 100.000525][ T166] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 100.000691][ T166] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535) [ 100.000890][ T166] ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2)) [ 100.001032][ T166] unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299) [ 100.001161][ T166] ? mark_held_locks (kernel/locking/lockdep.c:4325) [ 100.001291][ T166] ? unregister_netdevice_many (net/core/dev.c:12497) [ 100.001440][ T166] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 100.002275][ T166] ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6)) [ 100.002421][ T166] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) [ 100.002969][ T166] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) [ 100.003115][ T166] __fput (fs/file_table.c:510) [ 100.003236][ T166] task_work_run (kernel/task_work.c:233) [ 100.003373][ T166] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 100.003510][ T166] ? task_work_cancel (kernel/task_work.c:190) [ 100.003649][ T166] ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377) [ 100.003779][ T166] do_exit (./include/linux/task_work.h:40 kernel/exit.c:976) [ 100.003878][ T166] ? exit_notify (kernel/exit.c:748) [ 100.004007][ T166] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 100.004135][ T166] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535) [ 100.004264][ T166] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 100.004393][ T166] do_group_exit (kernel/exit.c:1119) [ 100.004527][ T166] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2)) [ 100.004701][ T166] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 100.004835][ T166] ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206) [ 100.004964][ T166] ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1)) [ 100.005091][ T166] get_signal (kernel/signal.c:3037) [ 100.005225][ T166] ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4)) [ 100.005354][ T166] ? __ia32_sys_getpeername (net/socket.c:2219) [ 100.005485][ T166] ? __might_fault (mm/memory.c:7340 (discriminator 5)) [ 100.005619][ T166] ? ptrace_signal (./include/linux/signal.h:87) [ 100.005749][ T166] arch_do_signal_or_restart (arch/x86/kernel/signal.c:337) [ 100.005881][ T166] ? get_sigframe_size (arch/x86/kernel/signal.c:233) [ 100.006014][ T166] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 100.006143][ T166] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 100.006307][ T166] exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98) [ 100.006438][ T166] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 100.006577][ T166] do_syscall_64 (./include/linux/irq-entry-common.h:207 ./include/linux/irq-entry-common.h:230 ./include/linux/entry-common.h:318 arch/x86/entry/syscall_64.c:100) [ 100.006711][ T166] ? irq_exit_rcu (kernel/softirq.c:754) [ 100.006839][ T166] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 100.006999][ T166] RIP: 0033:0x4c2d9e [ 100.007103][ T166] Code: Unable to access opcode bytes at 0x4c2d74. Code starting with the faulting instruction =========================================== [ 100.007269][ T166] RSP: 002b:00007ffed240bef0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 100.007465][ T166] RAX: 0000000000000014 RBX: 0000000000000012 RCX: 00000000004c2d9e [ 100.007664][ T166] RDX: 0000000000000014 RSI: 00007ffed240bfd0 RDI: 0000000000000007 [ 100.007853][ T166] RBP: 00007ffed240bf00 R08: 00007ffed240bf90 R09: 000000000000000c [ 100.008045][ T166] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffed240ca98 [ 100.008238][ T166] R13: 00007ffed240cb20 R14: 00007ffed240c0c0 R15: 0000000000543540 | [ 100.024773][ T12] ------------[ cut here ]------------ | [ 100.024966][ T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: 0/12 | [ 100.025241][ T12] Modules linked in: | [ 100.025728][ T12] Tainted: [W]=WARN [ 100.025826][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 100.025988][ T12] Workqueue: netns cleanup_net [ 100.026155][ T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 100.026318][ T12] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8b 44 24 58 44 8b 48 08 e9 42 ff ff ff 90 <0f> 0b 90 ba 02 00 00 00 48 89 de 31 ff e8 38 ff f0 ff b9 a6 ff ff All code ======== 0: 89 fa mov %edi,%edx 2: 48 c1 ea 03 shr $0x3,%rdx 6: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx a: 48 89 f8 mov %rdi,%rax d: 83 e0 07 and $0x7,%eax 10: 83 c0 03 add $0x3,%eax 13: 38 d0 cmp %dl,%al 15: 7c 04 jl 0x1b 17: 84 d2 test %dl,%dl 19: 75 79 jne 0x94 1b: 48 8b 44 24 58 mov 0x58(%rsp),%rax 20: 44 8b 48 08 mov 0x8(%rax),%r9d 24: e9 42 ff ff ff jmp 0xffffffffffffff6b 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: ba 02 00 00 00 mov $0x2,%edx 32: 48 89 de mov %rbx,%rsi 35: 31 ff xor %edi,%edi 37: e8 38 ff f0 ff call 0xfffffffffff0ff74 3c: b9 .byte 0xb9 3d: a6 cmpsb (%rdi),(%rsi) 3e: ff (bad) 3f: ff .byte 0xff Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: ba 02 00 00 00 mov $0x2,%edx 8: 48 89 de mov %rbx,%rsi b: 31 ff xor %edi,%edi d: e8 38 ff f0 ff call 0xfffffffffff0ff4a 12: b9 .byte 0xb9 13: a6 cmpsb (%rdi),(%rsi) 14: ff (bad) 15: ff .byte 0xff [ 100.026797][ T12] RSP: 0018:ffa00000000c7878 EFLAGS: 00010286 [ 100.026955][ T12] RAX: 00000000ffffffa6 RBX: ff1100000a855e40 RCX: 1ff4000000018ed5 [ 100.027149][ T12] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000a855ef0 [ 100.027332][ T12] RBP: ff1100000c62c000 R08: 1fe220000150abdf R09: ff11000001afd1d0 [ 100.027516][ T12] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff [ 100.027706][ T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 [ 100.027890][ T12] FS: 0000000000000000(0000) GS:ff110000851d3000(0000) knlGS:0000000000000000 [ 100.028105][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 100.028255][ T12] CR2: 00007f6d91f93f98 CR3: 0000000004a48004 CR4: 0000000000771ef0 [ 100.028436][ T12] PKRU: 55555554 [ 100.028558][ T12] Call Trace: [ 100.028675][ T12] [ 100.028741][ T12] unregister_netdevice_many_notify (net/core/dev.c:12439) [ 100.028905][ T12] ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3)) [ 100.029056][ T12] ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3)) [ 100.029179][ T12] default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089) [ 100.029307][ T12] ? generic_xdp_install (./include/linux/netdevice.h:5659) [ 100.029429][ T12] ? ipmr_free_table (net/ipv4/ipmr.c:453) [ 100.029563][ T12] ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7)) [ 100.029686][ T12] ? rtnl_is_locked (net/core/rtnetlink.c:169) [ 100.029804][ T12] ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1)) [ 100.029927][ T12] ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252) [ 100.030049][ T12] ? rtnl_net_dumpid_one (net/core/net_namespace.c:1094) [ 100.030169][ T12] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535) [ 100.030297][ T12] cleanup_net (net/core/net_namespace.c:702) [ 100.030419][ T12] ? net_passive_dec (./include/linux/llist.h:241) [ 100.030644][ T12] ? process_one_work (kernel/workqueue.c:3290 (discriminator 2)) [ 100.030772][ T12] ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22)) [ 100.030896][ T12] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 100.031092][ T12] process_one_work (kernel/workqueue.c:3314) [ 100.031216][ T12] ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4)) [ 100.031335][ T12] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1)) [ 100.031456][ T12] worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478) [ 100.031622][ T12] ? rescuer_thread (./include/linux/list.h:404 (discriminator 3)) [ 100.031748][ T12] kthread (kernel/kthread.c:436) [ 100.031843][ T12] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 100.032003][ T12] ? kthread_affine_node (kernel/kthread.c:378) [ 100.032134][ T12] ret_from_fork (arch/x86/kernel/process.c:158) [ 100.032269][ T12] ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37) [ 100.032417][ T12] ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663) [ 100.032554][ T12] ? kthread_affine_node (kernel/kthread.c:378) Finger prints: rtmsg_ifinfo_build_skb:rtmsg_ifinfo:register_netdevice:register_netdev:loopback_net_init rtmsg_ifinfo_build_skb:rtmsg_ifinfo:register_netdevice:__tun_chr_ioctl:__x64_sys_ioctl rtmsg_ifinfo_build_skb:unregister_netdevice_many_notify:unregister_netdevice_queue:__tun_detach:tun_chr_close rtmsg_ifinfo_build_skb:rtmsg_ifinfo:netif_close_many:unregister_netdevice_many_notify:unregister_netdevice_queue rtmsg_ifinfo_build_skb:rtnetlink_event:notifier_call_chain:netdev_update_features:__tun_chr_ioctl rtmsg_ifinfo_build_skb:rtmsg_ifinfo:__dev_notify_flags:netif_change_flags:dev_change_flags rtmsg_ifinfo_build_skb:unregister_netdevice_many_notify:default_device_exit_batch:ops_undo_list:cleanup_net