====================================== | xx__-> [ 9.565704][ T174] ------------[ cut here ]------------ | [ 9.565916][ T174] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: ip/174 | [ 9.566197][ T174] Modules linked in: | [ 9.566699][ T174] Tainted: [W]=WARN [ 9.566801][ T174] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.566994][ T174] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 9.567177][ 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 [ 9.567717][ T174] RSP: 0018:ffa0000000897aa8 EFLAGS: 00010286 [ 9.567886][ T174] RAX: 00000000ffffffa6 RBX: ff1100000cec5540 RCX: 1ff4000000112f1b [ 9.568091][ T174] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000cec55f0 [ 9.568293][ T174] RBP: ff1100000a184000 R08: 1fe22000019d8abf R09: ff1100000d65d180 [ 9.568506][ T174] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff [ 9.568705][ T174] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000a184000 [ 9.568930][ T174] FS: 00007f53713c4840(0000) GS:ff11000087179000(0000) knlGS:0000000000000000 [ 9.569171][ T174] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 9.569348][ T174] CR2: 0000000000479648 CR3: 000000000a198004 CR4: 0000000000771ef0 [ 9.569553][ T174] PKRU: 55555554 [ 9.569653][ T174] Call Trace: [ 9.569755][ T174] [ 9.569825][ T174] ? ip6_route_dev_notify (net/ipv6/route.c:6484) [ 9.569962][ T174] rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551) [ 9.570102][ T174] ? notifier_call_chain (kernel/notifier.c:85) [ 9.570237][ T174] rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560) [ 9.570347][ T174] register_netdevice (net/core/dev.c:11488) [ 9.570487][ T174] ? unregister_netdevice_queue (./include/linux/list.h:162) [ 9.570653][ T174] ? alloc_netdev_mqs (net/core/dev.c:12133) [ 9.570789][ T174] register_netdev (net/core/dev.c:11552) [ 9.570922][ T174] loopback_net_init (drivers/net/loopback.c:218) [ 9.571065][ T174] ops_init (net/core/net_namespace.c:137) [ 9.571183][ T174] setup_net (net/core/net_namespace.c:446) [ 9.571309][ T174] ? unregister_pernet_device (net/core/net_namespace.c:1503) [ 9.571450][ T174] ? lockdep_init_map_type (kernel/locking/lockdep.c:4973) [ 9.571586][ T174] ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185) [ 9.571722][ T174] copy_net_ns (net/core/net_namespace.c:579) [ 9.571857][ T174] create_new_namespaces (kernel/nsproxy.c:132) [ 9.571996][ T174] unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4)) [ 9.572138][ T174] ksys_unshare (kernel/fork.c:3243) [ 9.572276][ T174] ? walk_process_tree (kernel/fork.c:3036 (discriminator 19)) [ 9.572420][ T174] ? __ia32_sys_open (fs/open.c:1374) [ 9.572560][ T174] __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315) [ 9.572693][ T174] ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89) [ 9.572829][ T174] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 9.572961][ T174] ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1)) [ 9.573123][ T174] ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3)) [ 9.573257][ T174] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 9.573437][ T174] RIP: 0033:0x7f5371686bcb [ 9.573578][ T174] 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 [ 9.574076][ T174] RSP: 002b:00007ffe7a85de88 EFLAGS: 00000206 ORIG_RAX: 0000000000000110 [ 9.574281][ T174] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f5371686bcb [ 9.574488][ T174] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000 [ 9.574688][ T174] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 [ 9.574886][ T174] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffe7a8600b0 [ 9.575094][ T174] R13: 0000000000000001 R14: 00007f53713c46f8 R15: 00007ffe7a86086a | [ 9.693890][ T173] ------------[ cut here ]------------ | [ 9.694146][ T173] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: python3/173 | [ 9.694546][ T173] Modules linked in: netdevsim | [ 9.695121][ T173] Tainted: [W]=WARN [ 9.695249][ T173] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.695477][ T173] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 9.695696][ T173] 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 [ 9.696346][ T173] RSP: 0018:ffa0000000887500 EFLAGS: 00010286 [ 9.696563][ T173] RAX: 00000000ffffffa6 RBX: ff1100000cecbcc0 RCX: 1ff4000000110e66 [ 9.696822][ T173] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000cecbd70 [ 9.697079][ T173] RBP: ff1100000cf52000 R08: 1fe22000019d97af R09: ff1100000d65af48 [ 9.697338][ T173] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff [ 9.697596][ T173] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000cf52000 [ 9.697852][ T173] FS: 00007fa197971400(0000) GS:ff110000872f9000(0000) knlGS:0000000000000000 [ 9.698155][ T173] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 9.698381][ T173] CR2: 00007fa197d720a1 CR3: 000000000ecb5006 CR4: 0000000000771ef0 [ 9.698635][ T173] PKRU: 55555554 [ 9.698761][ T173] Call Trace: [ 9.698887][ T173] [ 9.698975][ T173] rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551) [ 9.699156][ T173] rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560) [ 9.699287][ T173] register_netdevice (net/core/dev.c:11488) [ 9.699471][ T173] ? unregister_netdevice_queue (./include/linux/list.h:162) [ 9.699681][ T173] ? __debugfs_create_file (fs/debugfs/inode.c:412 fs/debugfs/inode.c:452) [ 9.699855][ T173] nsim_init_netdevsim (drivers/net/netdevsim/netdev.c:1069) netdevsim [ 9.700079][ T173] nsim_create (drivers/net/netdevsim/netdev.c:1151) netdevsim [ 9.700252][ T173] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1509) netdevsim [ 9.700489][ T173] ? add_timer_on (kernel/time/timer.c:925 (discriminator 5)) [ 9.700661][ T173] ? nsim_dev_get_vfs (drivers/net/netdevsim/dev.c:65) netdevsim [ 9.700873][ T173] ? 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)) [ 9.701059][ T173] ? static_obj (kernel/locking/lockdep.c:858) [ 9.701189][ T173] ? mark_held_locks (kernel/locking/lockdep.c:4325) [ 9.701363][ T173] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:713 ./include/linux/workqueue.h:855 drivers/net/netdevsim/hwstats.c:439) netdevsim [ 9.701580][ T173] nsim_drv_probe (drivers/net/netdevsim/dev.c:1570 drivers/net/netdevsim/dev.c:1731) netdevsim [ 9.701753][ T173] call_driver_probe (drivers/base/dd.c:629) [ 9.701923][ T173] really_probe (drivers/base/dd.c:709) [ 9.702097][ T173] ? driver_probe_device (drivers/base/dd.c:135) [ 9.702266][ T173] __driver_probe_device (drivers/base/dd.c:871) [ 9.702444][ T173] driver_probe_device (drivers/base/dd.c:901) [ 9.702612][ T173] __device_attach_driver (drivers/base/dd.c:1029) [ 9.702780][ T173] bus_for_each_drv (drivers/base/bus.c:500) [ 9.702948][ T173] ? bus_find_device_reverse (drivers/base/bus.c:442) [ 9.703124][ T173] __device_attach (drivers/base/dd.c:1101) [ 9.703295][ T173] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 9.703488][ T173] ? __driver_attach_async_helper (drivers/base/dd.c:1172 (discriminator 1)) [ 9.703699][ T173] ? 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) [ 9.704243][ T173] ? _raw_spin_unlock (./include/linux/spinlock_api_smp.h:169 (discriminator 1) kernel/locking/spinlock.c:190 (discriminator 1)) [ 9.704424][ T173] device_initial_probe (drivers/base/dd.c:1156) [ 9.704593][ T173] bus_probe_device (drivers/base/bus.c:613) [ 9.704760][ T173] device_add (drivers/base/core.c:3706) [ 9.704928][ T173] ? __fw_devlink_link_to_consumers.isra.0 (./include/linux/property.h:226 (discriminator 3)) [ 9.705143][ T173] ? __init_waitqueue_head (kernel/sched/wait.c:12) [ 9.705316][ T173] ? pm_runtime_init (drivers/base/power/runtime.c:1859) [ 9.705491][ T173] new_device_store (drivers/net/netdevsim/bus.c:471 drivers/net/netdevsim/bus.c:191) netdevsim [ 9.705701][ T173] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535) [ 9.705867][ T173] ? new_port_store (drivers/net/netdevsim/bus.c:99) netdevsim [ 9.706082][ T173] ? 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)) [ 9.706253][ T173] ? sysfs_file_kobj (./include/linux/rcupdate.h:871 ./include/linux/rcupdate.h:1181 fs/sysfs/file.c:24) [ 9.706432][ T173] ? sysfs_file_ops (fs/sysfs/file.c:38 (discriminator 1)) [ 9.706600][ T173] kernfs_fop_write_iter (fs/kernfs/file.c:352) [ 9.706766][ T173] ? kernfs_ops (fs/kernfs/file.c:128) [ 9.706893][ T173] new_sync_write (fs/read_write.c:595) [ 9.707069][ T173] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 9.707237][ T173] ? new_sync_read (./include/linux/ioprio.h:41) [ 9.707413][ T173] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1)) [ 9.707582][ T173] ? ksys_write (fs/read_write.c:740) [ 9.707755][ T173] vfs_write (fs/read_write.c:688) [ 9.707882][ T173] ksys_write (fs/read_write.c:740) [ 9.708010][ T173] ? __ia32_sys_read (fs/read_write.c:724) [ 9.708184][ T173] ? kernfs_fop_llseek (fs/kernfs/file.c:908) [ 9.708356][ T173] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 9.708533][ T173] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 9.708711][ T173] ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1)) [ 9.708879][ T173] ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3)) [ 9.709051][ T173] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 9.709257][ T173] RIP: 0033:0x7fa197af908e [ 9.709439][ T173] 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 [ 9.710034][ T173] RSP: 002b:00007ffeb17f3350 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 9.710285][ T173] RAX: ffffffffffffffda RBX: 0000000000000009 RCX: 00007fa197af908e [ 9.710542][ T173] RDX: 0000000000000009 RSI: 000055a61a89e640 RDI: 0000000000000006 [ 9.710790][ T173] RBP: 00007ffeb17f3360 R08: 0000000000000000 R09: 0000000000000000 [ 9.711052][ T173] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fa197971390 [ 9.711306][ T173] R13: 000055a61a89e640 R14: 0000000000000006 R15: 00007fa1978fd0d0 | [ 10.196284][ T67] ------------[ cut here ]------------ | [ 10.196579][ T67] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: 1/67 | [ 10.196835][ T67] Modules linked in: netdevsim | [ 10.197315][ T67] Tainted: [W]=WARN [ 10.197422][ T67] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.197579][ T67] Workqueue: netns cleanup_net [ 10.197749][ T67] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 10.197917][ T67] 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 [ 10.198449][ T67] RSP: 0018:ffa0000000487878 EFLAGS: 00010286 [ 10.198621][ T67] RAX: 00000000ffffffa6 RBX: ff1100000b30b0c0 RCX: 1ff4000000090ed5 [ 10.198809][ T67] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000b30b170 [ 10.198995][ T67] RBP: ff1100000a184000 R08: 1fe220000166162f R09: ff11000008e20bd0 [ 10.199186][ T67] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff [ 10.199445][ T67] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 [ 10.199636][ T67] FS: 0000000000000000(0000) GS:ff110000872f9000(0000) knlGS:0000000000000000 [ 10.199852][ T67] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 10.200012][ T67] CR2: 00007fa195ea08f4 CR3: 000000002eb39003 CR4: 0000000000771ef0 [ 10.200219][ T67] PKRU: 55555554 [ 10.200382][ T67] Call Trace: [ 10.200478][ T67] [ 10.200544][ T67] unregister_netdevice_many_notify (net/core/dev.c:12439) [ 10.200705][ T67] ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3)) [ 10.200863][ T67] ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3)) [ 10.200997][ T67] default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089) [ 10.201126][ T67] ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7)) [ 10.201251][ T67] ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3)) [ 10.201462][ T67] ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252) [ 10.201590][ T67] ? rtnl_net_dumpid_one (net/core/net_namespace.c:1094) [ 10.201713][ T67] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535) [ 10.201840][ T67] cleanup_net (net/core/net_namespace.c:702) [ 10.201966][ T67] ? net_passive_dec (./include/linux/llist.h:241) [ 10.202094][ T67] ? process_one_work (kernel/workqueue.c:3290 (discriminator 2)) [ 10.202221][ T67] ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22)) [ 10.202416][ T67] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 10.202542][ T67] process_one_work (kernel/workqueue.c:3314) [ 10.202669][ T67] ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4)) [ 10.202791][ T67] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1)) [ 10.202921][ T67] worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478) [ 10.203060][ T67] ? rescuer_thread (./include/linux/list.h:404 (discriminator 3)) [ 10.203184][ T67] ? __kthread_parkme (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/kthread.c:272) [ 10.203359][ T67] ? rescuer_thread (./include/linux/list.h:404 (discriminator 3)) [ 10.203500][ T67] kthread (kernel/kthread.c:436) [ 10.203592][ T67] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 10.203746][ T67] ? kthread_affine_node (kernel/kthread.c:378) [ 10.203870][ T67] ret_from_fork (arch/x86/kernel/process.c:158) [ 10.204009][ T67] ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37) [ 10.204168][ T67] ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663) [ 10.204291][ T67] ? 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