====================================== | [ 11.536045][ T176] ------------[ cut here ]------------ | [ 11.536336][ T176] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#1: ip/176 | [ 11.536732][ T176] Modules linked in: netconsole | [ 11.537183][ T176] Tainted: [W]=WARN [ 11.537303][ T176] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.537496][ T176] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 11.537758][ T176] 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 a8 cb 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 a8 cb f0 ff call 0xfffffffffff0cbe4 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 a8 cb f0 ff call 0xfffffffffff0cbba 12: b9 .byte 0xb9 13: a6 cmpsb (%rdi),(%rsi) 14: ff (bad) 15: ff .byte 0xff [ 11.538491][ T176] RSP: 0018:ffa0000000617aa8 EFLAGS: 00010286 [ 11.538731][ T176] RAX: 00000000ffffffa6 RBX: ff1100000958a640 RCX: 1ff40000000c2f1b [ 11.539023][ T176] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000958a6f0 [ 11.539302][ T176] RBP: ff11000007d2c000 R08: 1fe22000012b14df R09: ff11000008b4ae80 [ 11.539570][ T176] R10: 0000000000000001 R11: 0000000000000001 R12: 00000000ffffffff [ 11.539902][ T176] R13: 0000000000000000 R14: 0000000000000000 R15: ff11000007d2c000 [ 11.540239][ T176] FS: 00007f3dc32cc840(0000) GS:ff1100007e3f9000(0000) knlGS:0000000000000000 [ 11.540518][ T176] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 11.540698][ T176] CR2: 0000000000479648 CR3: 000000000c41f001 CR4: 0000000000771ef0 [ 11.540900][ T176] PKRU: 55555554 [ 11.541001][ T176] Call Trace: [ 11.541102][ T176] [ 11.541171][ T176] ? ip6_route_dev_notify (net/ipv6/route.c:6484) [ 11.541320][ T176] rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551) [ 11.541457][ T176] ? notifier_call_chain (kernel/notifier.c:85) [ 11.541619][ T176] rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560) [ 11.541755][ T176] register_netdevice (net/core/dev.c:11488) [ 11.541960][ T176] ? unregister_netdevice_queue (./include/linux/list.h:162) [ 11.542223][ T176] ? alloc_netdev_mqs (net/core/dev.c:12133) [ 11.542452][ T176] register_netdev (net/core/dev.c:11552) [ 11.542625][ T176] loopback_net_init (drivers/net/loopback.c:218) [ 11.542772][ T176] ops_init (net/core/net_namespace.c:137) [ 11.542875][ T176] setup_net (net/core/net_namespace.c:446) [ 11.542982][ T176] ? unregister_pernet_device (net/core/net_namespace.c:1503) [ 11.543123][ T176] ? lockdep_init_map_type (kernel/locking/lockdep.c:4973) [ 11.543266][ T176] ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185) [ 11.543403][ T176] copy_net_ns (net/core/net_namespace.c:579) [ 11.543552][ T176] create_new_namespaces (kernel/nsproxy.c:132) [ 11.543694][ T176] unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4)) [ 11.543836][ T176] ksys_unshare (kernel/fork.c:3243) [ 11.543974][ T176] ? walk_process_tree (kernel/fork.c:3036 (discriminator 19)) [ 11.544131][ T176] ? __ia32_sys_open (fs/open.c:1374) [ 11.544289][ T176] __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315) [ 11.544426][ T176] ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89) [ 11.544732][ T176] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 11.544867][ T176] ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1)) [ 11.545019][ T176] ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3)) [ 11.545162][ T176] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 11.545344][ T176] RIP: 0033:0x7f3dc358ebcb [ 11.545493][ T176] 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 [ 11.546049][ T176] RSP: 002b:00007ffd9f2a5c08 EFLAGS: 00000202 ORIG_RAX: 0000000000000110 [ 11.546272][ T176] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f3dc358ebcb [ 11.546485][ T176] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000 [ 11.546760][ T176] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 [ 11.546964][ T176] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd9f2a7e30 [ 11.547166][ T176] R13: 0000000000000001 R14: 00007f3dc32cc6f8 R15: 00007ffd9f2a8856 | [ 11.677479][ T174] ------------[ cut here ]------------ | [ 11.677892][ T174] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: python3/174 | [ 11.678571][ T174] Modules linked in: netdevsim netconsole | [ 11.679502][ T174] Tainted: [W]=WARN [ 11.679713][ T174] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.680052][ T174] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 11.680435][ T174] 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 a8 cb 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 a8 cb f0 ff call 0xfffffffffff0cbe4 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 a8 cb f0 ff call 0xfffffffffff0cbba 12: b9 .byte 0xb9 13: a6 cmpsb (%rdi),(%rsi) 14: ff (bad) 15: ff .byte 0xff [ 11.681409][ T174] RSP: 0018:ffa0000000867500 EFLAGS: 00010286 [ 11.681760][ T174] RAX: 00000000ffffffa6 RBX: ff11000004c881c0 RCX: 1ff400000010ce66 [ 11.682157][ T174] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff11000004c88270 [ 11.682600][ T174] RBP: ff1100000c042000 R08: 1fe220000099104f R09: ff1100000c4cd248 [ 11.683004][ T174] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff [ 11.683412][ T174] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000c042000 [ 11.683821][ T174] FS: 00007f06da045400(0000) GS:ff1100007e4f9000(0000) knlGS:0000000000000000 [ 11.684304][ T174] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 11.684648][ T174] CR2: 0000563ca17a7e90 CR3: 000000000bbc6003 CR4: 0000000000771ef0 [ 11.685036][ T174] PKRU: 55555554 [ 11.685249][ T174] Call Trace: [ 11.685451][ T174] [ 11.685612][ T174] rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551) [ 11.685900][ T174] rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560) [ 11.686111][ T174] register_netdevice (net/core/dev.c:11488) [ 11.686389][ T174] ? unregister_netdevice_queue (./include/linux/list.h:162) [ 11.686816][ T174] ? __debugfs_create_file (fs/debugfs/inode.c:412 fs/debugfs/inode.c:452) [ 11.687098][ T174] nsim_init_netdevsim (drivers/net/netdevsim/netdev.c:1069) netdevsim [ 11.687452][ T174] nsim_create (drivers/net/netdevsim/netdev.c:1151) netdevsim [ 11.687737][ T174] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1509) netdevsim [ 11.688077][ T174] ? add_timer_on (kernel/time/timer.c:925 (discriminator 5)) [ 11.688360][ T174] ? nsim_dev_get_vfs (drivers/net/netdevsim/dev.c:65) netdevsim [ 11.688711][ T174] ? is_module_address (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) ./include/linux/rcupdate.h:1181 (discriminator 2) kernel/module/main.c:3876 (discriminator 2)) [ 11.688986][ T174] ? static_obj (kernel/locking/lockdep.c:858) [ 11.689195][ T174] ? mark_held_locks (kernel/locking/lockdep.c:4325) [ 11.689487][ T174] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:713 ./include/linux/workqueue.h:855 drivers/net/netdevsim/hwstats.c:439) netdevsim [ 11.689851][ T174] nsim_drv_probe (drivers/net/netdevsim/dev.c:1570 drivers/net/netdevsim/dev.c:1731) netdevsim [ 11.690132][ T174] call_driver_probe (drivers/base/dd.c:629) [ 11.690409][ T174] really_probe (drivers/base/dd.c:709) [ 11.690680][ T174] ? driver_probe_device (drivers/base/dd.c:135) [ 11.690938][ T174] __driver_probe_device (drivers/base/dd.c:871) [ 11.691216][ T174] driver_probe_device (drivers/base/dd.c:901) [ 11.691483][ T174] __device_attach_driver (drivers/base/dd.c:1029) [ 11.691777][ T174] bus_for_each_drv (drivers/base/bus.c:500) [ 11.692053][ T174] ? bus_find_device_reverse (drivers/base/bus.c:442) [ 11.692337][ T174] __device_attach (drivers/base/dd.c:1101) [ 11.692608][ T174] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 11.692877][ T174] ? __driver_attach_async_helper (drivers/base/dd.c:1172 (discriminator 1)) [ 11.693228][ T174] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 11.693514][ T174] ? _raw_spin_unlock (./include/linux/spinlock_api_smp.h:169 (discriminator 1) kernel/locking/spinlock.c:190 (discriminator 1)) [ 11.693806][ T174] device_initial_probe (drivers/base/dd.c:1156) [ 11.694097][ T174] bus_probe_device (drivers/base/bus.c:613) [ 11.694389][ T174] device_add (drivers/base/core.c:3706) [ 11.694667][ T174] ? __fw_devlink_link_to_consumers.isra.0 (./include/linux/property.h:226 (discriminator 3)) [ 11.695005][ T174] ? __init_waitqueue_head (kernel/sched/wait.c:12) [ 11.695294][ T174] ? pm_runtime_init (drivers/base/power/runtime.c:1859) [ 11.695573][ T174] new_device_store (drivers/net/netdevsim/bus.c:471 drivers/net/netdevsim/bus.c:191) netdevsim [ 11.695913][ T174] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535) [ 11.696183][ T174] ? new_port_store (drivers/net/netdevsim/bus.c:99) netdevsim [ 11.696532][ T174] ? sysfs_file_kobj (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) ./include/linux/rcupdate.h:1181 (discriminator 2) fs/sysfs/file.c:24 (discriminator 2)) [ 11.696806][ T174] ? sysfs_file_kobj (./include/linux/rcupdate.h:871 ./include/linux/rcupdate.h:1181 fs/sysfs/file.c:24) [ 11.697077][ T174] ? sysfs_file_ops (fs/sysfs/file.c:38 (discriminator 1)) [ 11.697353][ T174] kernfs_fop_write_iter (fs/kernfs/file.c:352) [ 11.697630][ T174] ? kernfs_ops (fs/kernfs/file.c:128) [ 11.697837][ T174] new_sync_write (fs/read_write.c:595) [ 11.698109][ T174] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 11.698374][ T174] ? new_sync_read (./include/linux/ioprio.h:41) [ 11.698644][ T174] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1)) [ 11.698907][ T174] ? ksys_write (fs/read_write.c:740) [ 11.699185][ T174] vfs_write (fs/read_write.c:688) [ 11.699401][ T174] ksys_write (fs/read_write.c:740) [ 11.699609][ T174] ? __ia32_sys_read (fs/read_write.c:724) [ 11.699904][ T174] ? kernfs_fop_llseek (fs/kernfs/file.c:908) [ 11.700179][ T174] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 11.700461][ T174] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 11.700757][ T174] ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1)) [ 11.701035][ T174] ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3)) [ 11.701311][ T174] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 11.701649][ T174] RIP: 0033:0x7f06da1cd08e [ 11.701932][ T174] Code: 4d 89 d8 e8 94 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa All code ======== 0: 4d 89 d8 mov %r11,%r8 3: e8 94 bd 00 00 call 0xbd9c 8: 4c 8b 5d f8 mov -0x8(%rbp),%r11 c: 41 8b 93 08 03 00 00 mov 0x308(%r11),%edx 13: 59 pop %rcx 14: 5e pop %rsi 15: 48 83 f8 fc cmp $0xfffffffffffffffc,%rax 19: 74 11 je 0x2c 1b: c9 leave 1c: c3 ret 1d: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 24: 48 8b 45 10 mov 0x10(%rbp),%rax 28: 0f 05 syscall 2a:* c9 leave <-- trapping instruction 2b: c3 ret 2c: 83 e2 39 and $0x39,%edx 2f: 83 fa 08 cmp $0x8,%edx 32: 75 e7 jne 0x1b 34: e8 03 ff ff ff call 0xffffffffffffff3c 39: 0f 1f 00 nopl (%rax) 3c: f3 0f 1e fa endbr64 Code starting with the faulting instruction =========================================== 0: c9 leave 1: c3 ret 2: 83 e2 39 and $0x39,%edx 5: 83 fa 08 cmp $0x8,%edx 8: 75 e7 jne 0xfffffffffffffff1 a: e8 03 ff ff ff call 0xffffffffffffff12 f: 0f 1f 00 nopl (%rax) 12: f3 0f 1e fa endbr64 [ 11.702905][ T174] RSP: 002b:00007ffc6aad5e90 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 11.703323][ T174] RAX: ffffffffffffffda RBX: 0000000000000009 RCX: 00007f06da1cd08e [ 11.703732][ T174] RDX: 0000000000000009 RSI: 0000561115d566f0 RDI: 0000000000000006 [ 11.704146][ T174] RBP: 00007ffc6aad5ea0 R08: 0000000000000000 R09: 0000000000000000 [ 11.704559][ T174] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f06da045390 [ 11.704956][ T174] R13: 0000561115d566f0 R14: 0000000000000006 R15: 00007f06d9fd10d0 | [ 12.352069][ T12] ------------[ cut here ]------------ | [ 12.352433][ T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: 0/12 | [ 12.352923][ T12] Modules linked in: netdevsim netconsole | [ 12.353649][ T12] Tainted: [W]=WARN [ 12.353798][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.354046][ T12] Workqueue: netns cleanup_net [ 12.354286][ T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 12.354556][ 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 a8 cb 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 a8 cb f0 ff call 0xfffffffffff0cbe4 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 a8 cb f0 ff call 0xfffffffffff0cbba 12: b9 .byte 0xb9 13: a6 cmpsb (%rdi),(%rsi) 14: ff (bad) 15: ff .byte 0xff [ 12.355257][ T12] RSP: 0018:ffa00000000c7878 EFLAGS: 00010286 [ 12.355502][ T12] RAX: 00000000ffffffa6 RBX: ff1100000b9af240 RCX: 1ff4000000018ed5 [ 12.355814][ T12] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000b9af2f0 [ 12.356109][ T12] RBP: ff11000007d2c000 R08: 1fe2200001735e5f R09: ff11000001b051d0 [ 12.356411][ T12] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff [ 12.356708][ T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 [ 12.357007][ T12] FS: 0000000000000000(0000) GS:ff1100007e4f9000(0000) knlGS:0000000000000000 [ 12.357355][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 12.357608][ T12] CR2: 00007fbf7823eab0 CR3: 000000000c36b002 CR4: 0000000000771ef0 [ 12.357914][ T12] PKRU: 55555554 [ 12.358063][ T12] Call Trace: [ 12.358219][ T12] [ 12.358330][ T12] unregister_netdevice_many_notify (net/core/dev.c:12439) [ 12.358590][ T12] ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3)) [ 12.358841][ T12] ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3)) [ 12.359049][ T12] default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089) [ 12.359251][ T12] ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7)) [ 12.359444][ T12] ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3)) [ 12.359650][ T12] ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252) [ 12.359853][ T12] ? rtnl_net_dumpid_one (net/core/net_namespace.c:1094) [ 12.360055][ T12] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 12.360262][ T12] cleanup_net (net/core/net_namespace.c:702) [ 12.360461][ T12] ? net_passive_dec (./include/linux/llist.h:241) [ 12.360661][ T12] ? process_one_work (kernel/workqueue.c:3290 (discriminator 2)) [ 12.360869][ T12] ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22)) [ 12.361065][ T12] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 12.361280][ T12] process_one_work (kernel/workqueue.c:3314) [ 12.361479][ T12] ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4)) [ 12.361682][ T12] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1)) [ 12.361923][ T12] worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478) [ 12.362127][ T12] ? rescuer_thread (./include/linux/list.h:404 (discriminator 3)) [ 12.362330][ T12] kthread (kernel/kthread.c:436) [ 12.362482][ T12] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 12.362727][ T12] ? kthread_affine_node (kernel/kthread.c:378) [ 12.362920][ T12] ret_from_fork (arch/x86/kernel/process.c:158) [ 12.363115][ T12] ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37) [ 12.363372][ T12] ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663) [ 12.363572][ 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:unregister_netdevice_many_notify:default_device_exit_batch:ops_undo_list:cleanup_net rtmsg_ifinfo_build_skb:rtmsg_ifinfo:register_netdevice:nsim_init_netdevsim:nsim_create