====================================== | xx__-> [ 10.778873][ T167] ------------[ cut here ]------------ | [ 10.779097][ T167] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: unshare/167 | [ 10.779415][ T167] Modules linked in: | [ 10.779994][ T167] Tainted: [W]=WARN [ 10.780112][ T167] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.780308][ T167] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 10.780522][ T167] 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 [ 10.781139][ T167] RSP: 0018:ffa0000000827ab0 EFLAGS: 00010286 [ 10.781340][ T167] RAX: 00000000ffffffa6 RBX: ff1100000c2f7240 RCX: 1ff4000000104f1c [ 10.781589][ T167] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000c2f72f0 [ 10.781838][ T167] RBP: ff110000052a4000 R08: 1fe220000185ee5f R09: ff11000009c6ae80 [ 10.782082][ T167] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff [ 10.782375][ T167] R13: 0000000000000000 R14: 0000000000000000 R15: ff110000052a4000 [ 10.782620][ T167] FS: 00007f984035f740(0000) GS:ff1100008abd3000(0000) knlGS:0000000000000000 [ 10.782917][ T167] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 10.783116][ T167] CR2: 000056366ae49310 CR3: 000000000c5a3001 CR4: 0000000000771ef0 [ 10.783357][ T167] PKRU: 55555554 [ 10.783483][ T167] Call Trace: [ 10.783603][ T167] [ 10.783690][ T167] ? ip6_route_dev_notify (net/ipv6/route.c:6484) [ 10.783863][ T167] rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551) [ 10.784035][ T167] ? notifier_call_chain (kernel/notifier.c:85) [ 10.784197][ T167] rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560) [ 10.784324][ T167] register_netdevice (net/core/dev.c:11488) [ 10.784487][ T167] ? unregister_netdevice_queue (./include/linux/list.h:162) [ 10.784691][ T167] register_netdev (net/core/dev.c:11552) [ 10.784857][ T167] loopback_net_init (drivers/net/loopback.c:218) [ 10.785018][ T167] ops_init (net/core/net_namespace.c:137) [ 10.785146][ T167] setup_net (net/core/net_namespace.c:446) [ 10.785261][ T167] ? unregister_pernet_device (net/core/net_namespace.c:1503) [ 10.785420][ T167] ? lockdep_init_map_type (kernel/locking/lockdep.c:4973) [ 10.785587][ T167] ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185) [ 10.785750][ T167] copy_net_ns (net/core/net_namespace.c:579) [ 10.785917][ T167] create_new_namespaces (kernel/nsproxy.c:132) [ 10.786080][ T167] unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4)) [ 10.786240][ T167] ksys_unshare (kernel/fork.c:3243) [ 10.786401][ T167] ? walk_process_tree (kernel/fork.c:3036 (discriminator 19)) [ 10.786568][ T167] __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315) [ 10.786729][ T167] ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89) [ 10.786896][ T167] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 10.787055][ T167] ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1)) [ 10.787218][ T167] ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3)) [ 10.787378][ T167] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 10.787599][ T167] RIP: 0033:0x7f984045abcb [ 10.787765][ T167] 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 [ 10.788336][ T167] RSP: 002b:00007fffe5474888 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 [ 10.788587][ T167] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f984045abcb [ 10.788833][ T167] RDX: 0000000000000000 RSI: 00007fffe54745f0 RDI: 0000000040000000 [ 10.789076][ T167] RBP: 00007fffe5474c10 R08: 00007fffe54747e0 R09: 0000000000000000 [ 10.789316][ T167] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000 [ 10.789562][ T167] R13: 0000000000000000 R14: 00000000ffffffff R15: 000056366ae4cb68 | [ 10.816923][ T167] ------------[ cut here ]------------ | [ 10.817097][ T167] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: packetdrill/167 | [ 10.817404][ T167] Modules linked in: | [ 10.817889][ T167] Tainted: [W]=WARN [ 10.818009][ T167] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.818198][ T167] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 10.818400][ T167] 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 [ 10.818960][ T167] RSP: 0018:ffa0000000827b58 EFLAGS: 00010286 [ 10.819154][ T167] RAX: 00000000ffffffa6 RBX: ff110000092e7e40 RCX: 1ff4000000104f31 [ 10.819381][ T167] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff110000092e7ef0 [ 10.819618][ T167] RBP: ff1100000d5b8000 R08: 1fe220000125cfdf R09: ff11000009c6ae58 [ 10.819853][ T167] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff [ 10.820080][ T167] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000d5b8000 [ 10.820312][ T167] FS: 0000000030445400(0000) GS:ff1100008abd3000(0000) knlGS:0000000000000000 [ 10.820589][ T167] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 10.820778][ T167] CR2: 00007f44783d8000 CR3: 000000000c6e9002 CR4: 0000000000771ef0 [ 10.821013][ T167] PKRU: 55555554 [ 10.821132][ T167] Call Trace: [ 10.821243][ T167] [ 10.821321][ T167] ? 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)) [ 10.821473][ T167] rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551) [ 10.821631][ T167] ? notifier_call_chain (kernel/notifier.c:85) [ 10.821785][ T167] rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560) [ 10.821915][ T167] register_netdevice (net/core/dev.c:11488) [ 10.822072][ T167] ? unregister_netdevice_queue (./include/linux/list.h:162) [ 10.822259][ T167] ? alloc_netdev_mqs (net/core/dev.c:12133) [ 10.822412][ T167] tun_set_iff.constprop.0 (drivers/net/tun.c:2876) [ 10.822569][ T167] ? tun_attach.isra.0 (./include/linux/ptr_ring.h:601) [ 10.822720][ T167] ? tun_get (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) drivers/net/tun.c:803 (discriminator 2)) [ 10.822846][ T167] __tun_chr_ioctl (drivers/net/tun.c:3157) [ 10.823001][ T167] ? build_open_flags (fs/open.c:1212) [ 10.823158][ T167] ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) [ 10.823313][ T167] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 10.823469][ T167] ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381) [ 10.823614][ T167] ? fput_close_sync (fs/file_table.c:615) [ 10.823763][ T167] ? __ia32_sys_open (fs/open.c:1374) [ 10.823923][ T167] __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583) [ 10.824077][ T167] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 10.824228][ T167] ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1)) [ 10.824378][ T167] ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3)) [ 10.824529][ T167] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 10.824729][ T167] RIP: 0033:0x47cc8d [ 10.824855][ T167] 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 [ 10.825393][ T167] RSP: 002b:00007ffeefc30180 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 10.825628][ T167] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 000000000047cc8d [ 10.825862][ T167] RDX: 00007ffeefc30200 RSI: 00000000400454ca RDI: 0000000000000005 [ 10.826088][ T167] RBP: 00007ffeefc301d0 R08: 0000000000000000 R09: 0000000000000000 [ 10.826317][ T167] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffeefc306d8 [ 10.826543][ T167] R13: 00007ffeefc30760 R14: 0000000000000002 R15: 0000000000543540 | [ 10.828584][ T167] ------------[ cut here ]------------ | [ 10.828721][ T167] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: packetdrill/167 | [ 10.829024][ T167] Modules linked in: | [ 10.829489][ T167] Tainted: [W]=WARN [ 10.829611][ T167] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.829803][ T167] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 10.830005][ T167] 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 [ 10.830539][ T167] RSP: 0018:ffa0000000827c58 EFLAGS: 00010286 [ 10.830732][ T167] RAX: 00000000ffffffa6 RBX: ff110000092e6f40 RCX: 1ff4000000104f51 [ 10.830963][ T167] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff110000092e6ff0 [ 10.831187][ T167] RBP: ff1100000d5b8000 R08: 1fe220000125cdff R09: ff11000009c6ae58 [ 10.831414][ T167] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 [ 10.831642][ T167] R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000000 [ 10.831875][ T167] FS: 0000000030445400(0000) GS:ff1100008abd3000(0000) knlGS:0000000000000000 [ 10.832144][ T167] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 10.832329][ T167] CR2: 00007f44783d8000 CR3: 000000000c6e9002 CR4: 0000000000771ef0 [ 10.832562][ T167] PKRU: 55555554 [ 10.832680][ T167] Call Trace: [ 10.832789][ T167] [ 10.832873][ T167] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 10.833029][ T167] rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121) [ 10.833184][ T167] notifier_call_chain (kernel/notifier.c:85) [ 10.833339][ T167] 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) [ 10.833488][ T167] ? netdev_sync_lower_features (net/core/dev.c:10883) [ 10.833691][ T167] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) [ 10.833857][ T167] ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) [ 10.834013][ T167] ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1)) [ 10.834170][ T167] ? update_socket_protocol+0x10/0x10 [ 10.834394][ T167] ? alloc_file_clone (fs/file_table.c:477) [ 10.834555][ T167] __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583) [ 10.834706][ T167] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 10.834864][ T167] ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1)) [ 10.835091][ T167] ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3)) [ 10.835242][ T167] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 10.835432][ T167] RIP: 0033:0x47cc8d [ 10.835547][ T167] 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 [ 10.836173][ T167] RSP: 002b:00007ffeefc301c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 10.836473][ T167] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 000000000047cc8d [ 10.836707][ T167] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005 [ 10.836938][ T167] RBP: 00007ffeefc30210 R08: 0000000000000000 R09: 0000000000000000 [ 10.837243][ T167] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffeefc306d8 [ 10.837468][ T167] R13: 00007ffeefc30760 R14: 0000000000000002 R15: 0000000000543540 | [ 10.839766][ T167] ------------[ cut here ]------------ | [ 10.839998][ T167] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: packetdrill/167 | [ 10.840294][ T167] Modules linked in: | [ 10.840872][ T167] Tainted: [W]=WARN [ 10.840995][ T167] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.841191][ T167] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 10.841486][ T167] 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 [ 10.842146][ T167] RSP: 0018:ffa0000000827850 EFLAGS: 00010286 [ 10.842342][ T167] RAX: 00000000ffffffa6 RBX: ff110000092e6c40 RCX: 1ff4000000104ed0 [ 10.842581][ T167] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff110000092e6cf0 [ 10.842903][ T167] RBP: ff1100000d5b8000 R08: 1fe220000125cd9f R09: ff11000009c6ae58 [ 10.843137][ T167] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001 [ 10.843370][ T167] R13: 0000000000000000 R14: 0000000000000000 R15: ff110000057f8900 [ 10.843698][ T167] FS: 0000000030445400(0000) GS:ff1100008abd3000(0000) knlGS:0000000000000000 [ 10.843982][ T167] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 10.844175][ T167] CR2: 00007f44783d8000 CR3: 000000000c6e9002 CR4: 0000000000771ef0 [ 10.844491][ T167] PKRU: 55555554 [ 10.844621][ T167] Call Trace: [ 10.844735][ T167] [ 10.844820][ T167] rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551) [ 10.845064][ T167] rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560) [ 10.845189][ T167] ? mark_held_locks (kernel/locking/lockdep.c:4325) [ 10.845347][ T167] __dev_notify_flags (net/core/dev.c:9787) [ 10.845508][ T167] ? netif_change_name (net/core/dev.c:1495) [ 10.845758][ T167] ? __dev_change_flags (net/core/dev.c:9752) [ 10.845922][ T167] ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1)) [ 10.846093][ T167] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1)) [ 10.846252][ T167] netif_change_flags (net/core/dev.c:9820) [ 10.846412][ T167] ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22)) [ 10.846661][ T167] dev_change_flags (net/core/dev_api.c:68) [ 10.846826][ T167] devinet_ioctl (net/ipv4/devinet.c:1199) [ 10.846990][ T167] ? inet_ifa_byprefix (net/ipv4/devinet.c:619 (discriminator 9)) [ 10.847150][ T167] ? _copy_from_user (./include/linux/instrumented.h:146 ./include/linux/uaccess.h:184 lib/usercopy.c:18) [ 10.847414][ T167] inet_ioctl (net/ipv4/af_inet.c:1011) [ 10.847530][ T167] ? inet_dgram_connect (net/ipv4/af_inet.c:589) [ 10.847694][ T167] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 10.847863][ T167] ? __might_fault (mm/memory.c:7340 (discriminator 5)) [ 10.848103][ T167] ? __might_fault (mm/memory.c:7340 (discriminator 5)) [ 10.848263][ T167] sock_do_ioctl (net/socket.c:1313) [ 10.848421][ T167] ? __sock_recv_cmsgs (./include/net/sock.h:2867) [ 10.848588][ T167] ? ioctl_file_clone (fs/ioctl.c:244) [ 10.848839][ T167] sock_ioctl (net/socket.c:1434) [ 10.848964][ T167] ? br_ioctl_call (net/socket.c:1279) [ 10.849124][ T167] ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1)) [ 10.849287][ T167] ? update_socket_protocol+0x10/0x10 [ 10.849529][ T167] ? alloc_file_clone (fs/file_table.c:477) [ 10.849695][ T167] __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583) [ 10.849865][ T167] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 10.850027][ T167] ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1)) [ 10.850274][ T167] ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3)) [ 10.850430][ T167] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 10.850632][ T167] RIP: 0033:0x47cc8d [ 10.850763][ T167] 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 [ 10.851423][ T167] RSP: 002b:00007ffeefc301a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 10.851754][ T167] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 000000000047cc8d [ 10.851995][ T167] RDX: 00007ffeefc30210 RSI: 0000000000008914 RDI: 0000000000000006 [ 10.852235][ T167] RBP: 00007ffeefc301f0 R08: 0000000000000000 R09: 0000000000000000 [ 10.852565][ T167] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffeefc306d8 [ 10.852804][ T167] R13: 00007ffeefc30760 R14: 0000000000000002 R15: 0000000000543540 | [ 100.589087][ T167] ------------[ cut here ]------------ | [ 100.589284][ T167] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: packetdrill/167 | [ 100.589587][ T167] Modules linked in: | [ 100.590028][ T167] Tainted: [W]=WARN [ 100.590129][ T167] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 100.590297][ T167] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 100.590474][ T167] 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 [ 100.591020][ T167] RSP: 0018:ffa00000008276f0 EFLAGS: 00010286 [ 100.591249][ T167] RAX: 00000000ffffffa6 RBX: ff110000051f6ac0 RCX: 1ff4000000104ea4 [ 100.591447][ T167] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff110000051f6b70 [ 100.591710][ T167] RBP: ff1100000d5b8000 R08: 1fe2200000a3ed6f R09: ff11000009c6ae58 [ 100.591907][ T167] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000041 [ 100.592101][ T167] R13: 0000000000000000 R14: 0000000000000000 R15: ffa0000000827790 [ 100.592300][ T167] FS: 0000000000000000(0000) GS:ff1100008abd3000(0000) knlGS:0000000000000000 [ 100.592540][ T167] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 100.592770][ T167] CR2: 00007f44783d8000 CR3: 000000001ef39001 CR4: 0000000000771ef0 [ 100.592967][ T167] PKRU: 55555554 [ 100.593066][ T167] Call Trace: [ 100.593165][ T167] [ 100.593237][ T167] rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551) [ 100.593376][ T167] rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560) [ 100.593477][ T167] netif_close_many (net/core/dev.c:1804) [ 100.593672][ T167] ? asym_cpu_capacity_scan (./include/linux/rculist.h:103) [ 100.593806][ T167] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1)) [ 100.593937][ T167] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 100.594070][ T167] ? __dev_close_many (net/core/dev.c:1781) [ 100.594201][ T167] ? netif_close_many_and_unlock (net/core/dev.c:12330) [ 100.594369][ T167] unregister_netdevice_many_notify (net/core/dev.c:12406) [ 100.594539][ T167] ? select_fallback_rq (kernel/sched/sched.h:1383) [ 100.594730][ T167] ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3)) [ 100.594890][ T167] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 100.595023][ T167] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 100.595156][ T167] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535) [ 100.595288][ T167] ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2)) [ 100.595423][ T167] unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299) [ 100.595615][ T167] ? mark_held_locks (kernel/locking/lockdep.c:4325) [ 100.595747][ T167] ? unregister_netdevice_many (net/core/dev.c:12497) [ 100.595880][ T167] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 100.596016][ T167] ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6)) [ 100.596150][ T167] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) [ 100.596286][ T167] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) [ 100.596418][ T167] __fput (fs/file_table.c:510) [ 100.596525][ T167] task_work_run (kernel/task_work.c:233) [ 100.596718][ T167] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 100.596847][ T167] ? task_work_cancel (kernel/task_work.c:190) [ 100.596977][ T167] ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377) [ 100.597108][ T167] do_exit (./include/linux/task_work.h:40 kernel/exit.c:976) [ 100.597212][ T167] ? exit_notify (kernel/exit.c:748) [ 100.597341][ T167] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 100.597473][ T167] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535) [ 100.597669][ T167] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 100.597799][ T167] do_group_exit (kernel/exit.c:1119) [ 100.597928][ T167] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2)) [ 100.598092][ T167] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 100.598221][ T167] ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206) [ 100.598352][ T167] ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1)) [ 100.598480][ T167] get_signal (kernel/signal.c:3037) [ 100.598676][ T167] ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4)) [ 100.598807][ T167] ? __ia32_sys_getpeername (net/socket.c:2219) [ 100.598938][ T167] ? ptrace_signal (./include/linux/signal.h:87) [ 100.599074][ T167] arch_do_signal_or_restart (arch/x86/kernel/signal.c:337) [ 100.599208][ T167] ? get_sigframe_size (arch/x86/kernel/signal.c:233) [ 100.599345][ T167] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 100.599479][ T167] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 100.599704][ T167] exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98) [ 100.599838][ T167] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 100.599971][ T167] 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) [ 100.600103][ T167] ? irq_exit_rcu (kernel/softirq.c:754) [ 100.600237][ T167] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 100.600403][ T167] RIP: 0033:0x4c2d9e [ 100.600509][ T167] Code: Unable to access opcode bytes at 0x4c2d74. Code starting with the faulting instruction =========================================== [ 100.600758][ T167] RSP: 002b:00007ffeefc2fb30 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 100.600960][ T167] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e [ 100.601156][ T167] RDX: 0000000000000014 RSI: 00007ffeefc2fc10 RDI: 0000000000000007 [ 100.601353][ T167] RBP: 00007ffeefc2fb40 R08: 00007ffeefc2fbd0 R09: 000000000000000c [ 100.601613][ T167] R10: 0000000000000000 R11: 0000000000000202 R12: 000000003044ef30 [ 100.601811][ T167] R13: 00007ffeefc30760 R14: 00007ffeefc2fd00 R15: 0000000000543540 | [ 100.612469][ T167] ------------[ cut here ]------------ | [ 100.613095][ T167] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: packetdrill/167 | [ 100.613353][ T167] Modules linked in: | [ 100.614192][ T167] Tainted: [W]=WARN [ 100.614291][ T167] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 100.614452][ T167] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 100.614631][ T167] 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 [ 100.615089][ T167] RSP: 0018:ffa0000000827820 EFLAGS: 00010286 [ 100.615251][ T167] RAX: 00000000ffffffa6 RBX: ff110000051f79c0 RCX: 1ff4000000104eca [ 100.615443][ T167] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff110000051f7a70 [ 100.615645][ T167] RBP: ff1100000d5b8000 R08: 1fe2200000a3ef4f R09: ff11000009c6ae58 [ 100.615838][ T167] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff [ 100.616031][ T167] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 [ 100.616230][ T167] FS: 0000000000000000(0000) GS:ff1100008abd3000(0000) knlGS:0000000000000000 [ 100.616454][ T167] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 100.616626][ T167] CR2: 00007f44783d8000 CR3: 000000001ef39001 CR4: 0000000000771ef0 [ 100.616820][ T167] PKRU: 55555554 [ 100.616951][ T167] Call Trace: [ 100.617047][ T167] [ 100.617114][ T167] unregister_netdevice_many_notify (net/core/dev.c:12439) [ 100.617282][ T167] ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3)) [ 100.617440][ T167] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 100.617576][ T167] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 100.617704][ T167] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535) [ 100.617833][ T167] ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2)) [ 100.617962][ T167] unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299) [ 100.618089][ T167] ? mark_held_locks (kernel/locking/lockdep.c:4325) [ 100.618217][ T167] ? unregister_netdevice_many (net/core/dev.c:12497) [ 100.618345][ T167] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 100.618475][ T167] ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6)) [ 100.618615][ T167] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) [ 100.618749][ T167] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) [ 100.618878][ T167] __fput (fs/file_table.c:510) [ 100.618979][ T167] task_work_run (kernel/task_work.c:233) [ 100.619108][ T167] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 100.619237][ T167] ? task_work_cancel (kernel/task_work.c:190) [ 100.619366][ T167] ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377) [ 100.619497][ T167] do_exit (./include/linux/task_work.h:40 kernel/exit.c:976) [ 100.619607][ T167] ? exit_notify (kernel/exit.c:748) [ 100.619735][ T167] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 100.619862][ T167] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535) [ 100.619993][ T167] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 100.620123][ T167] do_group_exit (kernel/exit.c:1119) [ 100.620250][ T167] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2)) [ 100.620411][ T167] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 100.620542][ T167] ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206) [ 100.620677][ T167] ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1)) [ 100.620807][ T167] get_signal (kernel/signal.c:3037) [ 100.620940][ T167] ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4)) [ 100.621068][ T167] ? __ia32_sys_getpeername (net/socket.c:2219) [ 100.621196][ T167] ? ptrace_signal (./include/linux/signal.h:87) [ 100.621327][ T167] arch_do_signal_or_restart (arch/x86/kernel/signal.c:337) [ 100.621458][ T167] ? get_sigframe_size (arch/x86/kernel/signal.c:233) [ 100.621601][ T167] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 100.621733][ T167] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 100.621894][ T167] exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98) [ 100.622021][ T167] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 100.622151][ T167] 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) [ 100.622280][ T167] ? irq_exit_rcu (kernel/softirq.c:754) [ 100.622411][ T167] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 100.622579][ T167] RIP: 0033:0x4c2d9e [ 100.622683][ T167] Code: Unable to access opcode bytes at 0x4c2d74. Code starting with the faulting instruction =========================================== [ 100.622847][ T167] RSP: 002b:00007ffeefc2fb30 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 100.623041][ T167] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e [ 100.623233][ T167] RDX: 0000000000000014 RSI: 00007ffeefc2fc10 RDI: 0000000000000007 [ 100.623424][ T167] RBP: 00007ffeefc2fb40 R08: 00007ffeefc2fbd0 R09: 000000000000000c [ 100.624205][ T167] R10: 0000000000000000 R11: 0000000000000202 R12: 000000003044ef30 [ 100.624918][ T167] R13: 00007ffeefc30760 R14: 00007ffeefc2fd00 R15: 0000000000543540 | [ 100.646115][ T12] ------------[ cut here ]------------ | [ 100.646434][ T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: 0/12 | [ 100.647008][ T12] Modules linked in: | [ 100.647827][ T12] Tainted: [W]=WARN [ 100.647975][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 100.648219][ T12] Workqueue: netns cleanup_net [ 100.648480][ T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 100.648881][ 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 [ 100.649514][ T12] RSP: 0018:ffa00000000c7878 EFLAGS: 00010286 [ 100.649902][ T12] RAX: 00000000ffffffa6 RBX: ff110000051f6040 RCX: 1ff4000000018ed5 [ 100.650168][ T12] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff110000051f60f0 [ 100.650432][ T12] RBP: ff110000052a4000 R08: 1fe2200000a3ec1f R09: ff11000001afd1d0 [ 100.650816][ T12] R10: 0000000000000001 R11: 0000000000000001 R12: 00000000ffffffff [ 100.651092][ T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 [ 100.651358][ T12] FS: 0000000000000000(0000) GS:ff1100008ac53000(0000) knlGS:0000000000000000 [ 100.651811][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 100.652104][ T12] CR2: 00007f1ecf1bff98 CR3: 000000001ef39006 CR4: 0000000000771ef0 [ 100.652365][ T12] PKRU: 55555554 [ 100.652496][ T12] Call Trace: [ 100.652709][ T12] [ 100.652802][ T12] unregister_netdevice_many_notify (net/core/dev.c:12439) [ 100.653037][ T12] ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3)) [ 100.653256][ T12] ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3)) [ 100.653436][ T12] default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089) [ 100.653695][ T12] ? generic_xdp_install (./include/linux/netdevice.h:5659) [ 100.653865][ T12] ? ipmr_free_table (net/ipv4/ipmr.c:453) [ 100.654037][ T12] ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7)) [ 100.654205][ T12] ? rtnl_is_locked (net/core/rtnetlink.c:169) [ 100.654374][ T12] ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1)) [ 100.654624][ T12] ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252) [ 100.654798][ T12] ? rtnl_net_dumpid_one (net/core/net_namespace.c:1094) [ 100.654966][ T12] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535) [ 100.655140][ T12] cleanup_net (net/core/net_namespace.c:702) [ 100.655309][ T12] ? net_passive_dec (./include/linux/llist.h:241) [ 100.655475][ T12] ? process_one_work (kernel/workqueue.c:3290 (discriminator 2)) [ 100.655731][ T12] ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22)) [ 100.655896][ T12] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 100.656068][ T12] process_one_work (kernel/workqueue.c:3314) [ 100.656241][ T12] ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4)) [ 100.656409][ T12] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1)) [ 100.656666][ T12] worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478) [ 100.656841][ T12] ? rescuer_thread (./include/linux/list.h:404 (discriminator 3)) [ 100.657011][ T12] kthread (kernel/kthread.c:436) [ 100.657139][ T12] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 100.657352][ T12] ? kthread_affine_node (kernel/kthread.c:378) [ 100.657526][ T12] ret_from_fork (arch/x86/kernel/process.c:158) [ 100.657796][ T12] ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37) [ 100.658010][ T12] ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663) [ 100.658180][ 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