====================================== | xx__-> [ 11.342523][ T175] ------------[ cut here ]------------ | [ 11.342850][ T175] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: ip/175 | [ 11.343293][ T175] Modules linked in: | [ 11.343942][ T175] Tainted: [W]=WARN [ 11.344106][ T175] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.344381][ T175] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 11.344683][ T175] 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 [ 11.345560][ T175] RSP: 0018:ffa0000000837aa8 EFLAGS: 00010286 [ 11.345830][ T175] RAX: 00000000ffffffa6 RBX: ff1100000948c040 RCX: 1ff4000000106f1b [ 11.346157][ T175] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000948c0f0 [ 11.346478][ T175] RBP: ff110000089d1000 R08: 1fe220000129181f R09: ff1100000c768b80 [ 11.346798][ T175] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff [ 11.347124][ T175] R13: 0000000000000000 R14: 0000000000000000 R15: ff110000089d1000 [ 11.347442][ T175] FS: 00007f799d6e2840(0000) GS:ff110000786f9000(0000) knlGS:0000000000000000 [ 11.347824][ T175] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 11.348100][ T175] CR2: 0000000000479648 CR3: 0000000004cad004 CR4: 0000000000771ef0 [ 11.348408][ T175] PKRU: 55555554 [ 11.348568][ T175] Call Trace: [ 11.348726][ T175] [ 11.348836][ T175] ? ip6_route_dev_notify (net/ipv6/route.c:6484) [ 11.349066][ T175] rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551) [ 11.349282][ T175] ? notifier_call_chain (kernel/notifier.c:85) [ 11.349490][ T175] rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560) [ 11.349652][ T175] register_netdevice (net/core/dev.c:11488) [ 11.349869][ T175] ? unregister_netdevice_queue (./include/linux/list.h:162) [ 11.350149][ T175] ? alloc_netdev_mqs (net/core/dev.c:12133) [ 11.350370][ T175] register_netdev (net/core/dev.c:11552) [ 11.350585][ T175] loopback_net_init (drivers/net/loopback.c:218) [ 11.350797][ T175] ops_init (net/core/net_namespace.c:137) [ 11.350965][ T175] setup_net (net/core/net_namespace.c:446) [ 11.351128][ T175] ? unregister_pernet_device (net/core/net_namespace.c:1503) [ 11.351344][ T175] ? lockdep_init_map_type (kernel/locking/lockdep.c:4973) [ 11.351555][ T175] ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185) [ 11.351764][ T175] copy_net_ns (net/core/net_namespace.c:579) [ 11.351996][ T175] create_new_namespaces (kernel/nsproxy.c:132) [ 11.352220][ T175] unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4)) [ 11.352434][ T175] ksys_unshare (kernel/fork.c:3243) [ 11.352647][ T175] ? walk_process_tree (kernel/fork.c:3036 (discriminator 19)) [ 11.352858][ T175] ? __ia32_sys_open (fs/open.c:1374) [ 11.353084][ T175] __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315) [ 11.353301][ T175] ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89) [ 11.353516][ T175] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 11.353727][ T175] ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1)) [ 11.353950][ T175] ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3)) [ 11.354172][ T175] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 11.354434][ T175] RIP: 0033:0x7f799d9a4bcb [ 11.354649][ T175] 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 [ 11.355423][ T175] RSP: 002b:00007ffdf08f6168 EFLAGS: 00000202 ORIG_RAX: 0000000000000110 [ 11.355741][ T175] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f799d9a4bcb [ 11.356066][ T175] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000 [ 11.356382][ T175] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 [ 11.356704][ T175] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffdf08f8390 [ 11.357052][ T175] R13: 0000000000000001 R14: 00007f799d6e26f8 R15: 00007ffdf08f8856 | [ 11.563018][ T174] ------------[ cut here ]------------ | [ 11.563478][ T174] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: python3/174 | [ 11.564055][ T174] Modules linked in: netdevsim | [ 11.565023][ T174] Tainted: [W]=WARN [ 11.565234][ T174] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.565578][ T174] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 11.565948][ 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 [ 11.566994][ T174] RSP: 0018:ffa0000000507500 EFLAGS: 00010286 [ 11.567340][ T174] RAX: 00000000ffffffa6 RBX: ff1100000282f6c0 RCX: 1ff40000000a0e66 [ 11.567746][ T174] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000282f770 [ 11.568163][ T174] RBP: ff1100000cd52000 R08: 1fe2200000505eef R09: ff1100000be5d248 [ 11.568559][ T174] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff [ 11.568973][ T174] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000cd52000 [ 11.569389][ T174] FS: 00007f42008b9400(0000) GS:ff110000786f9000(0000) knlGS:0000000000000000 [ 11.569865][ T174] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 11.570228][ T174] CR2: 000055cd217fbc40 CR3: 000000000e4d0005 CR4: 0000000000771ef0 [ 11.570665][ T174] PKRU: 55555554 [ 11.570867][ T174] Call Trace: [ 11.571081][ T174] [ 11.571234][ T174] rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551) [ 11.571515][ T174] rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560) [ 11.571721][ T174] register_netdevice (net/core/dev.c:11488) [ 11.572002][ T174] ? unregister_netdevice_queue (./include/linux/list.h:162) [ 11.572343][ T174] ? __debugfs_create_file (fs/debugfs/inode.c:412 fs/debugfs/inode.c:452) [ 11.572630][ T174] nsim_init_netdevsim (drivers/net/netdevsim/netdev.c:1069) netdevsim [ 11.572986][ T174] nsim_create (drivers/net/netdevsim/netdev.c:1151) netdevsim [ 11.573263][ T174] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1509) netdevsim [ 11.573599][ T174] ? add_timer_on (kernel/time/timer.c:925 (discriminator 5)) [ 11.573919][ T174] ? nsim_dev_get_vfs (drivers/net/netdevsim/dev.c:65) netdevsim [ 11.574266][ 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)) [ 11.574541][ T174] ? static_obj (kernel/locking/lockdep.c:858) [ 11.574746][ T174] ? mark_held_locks (kernel/locking/lockdep.c:4325) [ 11.575030][ T174] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:713 ./include/linux/workqueue.h:855 drivers/net/netdevsim/hwstats.c:439) netdevsim [ 11.575378][ T174] nsim_drv_probe (drivers/net/netdevsim/dev.c:1570 drivers/net/netdevsim/dev.c:1731) netdevsim [ 11.575658][ T174] call_driver_probe (drivers/base/dd.c:629) [ 11.575949][ T174] really_probe (drivers/base/dd.c:709) [ 11.576236][ T174] ? driver_probe_device (drivers/base/dd.c:135) [ 11.576523][ T174] __driver_probe_device (drivers/base/dd.c:871) [ 11.576796][ T174] driver_probe_device (drivers/base/dd.c:901) [ 11.577077][ T174] __device_attach_driver (drivers/base/dd.c:1029) [ 11.577359][ T174] bus_for_each_drv (drivers/base/bus.c:500) [ 11.577636][ T174] ? bus_find_device_reverse (drivers/base/bus.c:442) [ 11.577928][ T174] __device_attach (drivers/base/dd.c:1101) [ 11.578214][ T174] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 11.578484][ T174] ? __driver_attach_async_helper (drivers/base/dd.c:1172 (discriminator 1)) [ 11.578835][ 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) [ 11.579113][ T174] ? _raw_spin_unlock (./include/linux/spinlock_api_smp.h:169 (discriminator 1) kernel/locking/spinlock.c:190 (discriminator 1)) [ 11.579389][ T174] device_initial_probe (drivers/base/dd.c:1156) [ 11.579665][ T174] bus_probe_device (drivers/base/bus.c:613) [ 11.579958][ T174] device_add (drivers/base/core.c:3706) [ 11.580239][ T174] ? __fw_devlink_link_to_consumers.isra.0 (./include/linux/property.h:226 (discriminator 3)) [ 11.580584][ T174] ? __init_waitqueue_head (kernel/sched/wait.c:12) [ 11.580863][ T174] ? pm_runtime_init (drivers/base/power/runtime.c:1859) [ 11.581160][ T174] new_device_store (drivers/net/netdevsim/bus.c:471 drivers/net/netdevsim/bus.c:191) netdevsim [ 11.581498][ T174] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535) [ 11.581765][ T174] ? new_port_store (drivers/net/netdevsim/bus.c:99) netdevsim [ 11.582110][ 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)) [ 11.582390][ T174] ? sysfs_file_kobj (./include/linux/rcupdate.h:871 ./include/linux/rcupdate.h:1181 fs/sysfs/file.c:24) [ 11.582658][ T174] ? sysfs_file_ops (fs/sysfs/file.c:38 (discriminator 1)) [ 11.582945][ T174] kernfs_fop_write_iter (fs/kernfs/file.c:352) [ 11.583221][ T174] ? kernfs_ops (fs/kernfs/file.c:128) [ 11.583426][ T174] new_sync_write (fs/read_write.c:595) [ 11.583700][ T174] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 11.583980][ T174] ? new_sync_read (./include/linux/ioprio.h:41) [ 11.584250][ T174] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1)) [ 11.584516][ T174] ? ksys_write (fs/read_write.c:740) [ 11.584802][ T174] vfs_write (fs/read_write.c:688) [ 11.585032][ T174] ksys_write (fs/read_write.c:740) [ 11.585246][ T174] ? __ia32_sys_read (fs/read_write.c:724) [ 11.585518][ T174] ? kernfs_fop_llseek (fs/kernfs/file.c:908) [ 11.585791][ T174] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 11.586077][ T174] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 11.586352][ T174] ? irq_exit_rcu (kernel/softirq.c:754) [ 11.586626][ T174] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 11.586973][ T174] RIP: 0033:0x7f4200a4108e [ 11.587261][ 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 [ 11.588261][ T174] RSP: 002b:00007ffd0f17f550 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 11.588672][ T174] RAX: ffffffffffffffda RBX: 0000000000000009 RCX: 00007f4200a4108e [ 11.589083][ T174] RDX: 0000000000000009 RSI: 000055f6b7c798b0 RDI: 0000000000000006 [ 11.589493][ T174] RBP: 00007ffd0f17f560 R08: 0000000000000000 R09: 0000000000000000 [ 11.589902][ T174] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f42008b9390 [ 11.590309][ T174] R13: 000055f6b7c798b0 R14: 0000000000000006 R15: 00007f42008450d0 | [ 12.163457][ T68] ------------[ cut here ]------------ | [ 12.163792][ T68] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: 1/68 | [ 12.164193][ T68] Modules linked in: netdevsim | [ 12.164834][ T68] Tainted: [W]=WARN [ 12.165010][ T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.165229][ T68] Workqueue: netns cleanup_net [ 12.165442][ T68] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 12.165675][ T68] 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 [ 12.166228][ T68] RSP: 0018:ffa0000000497878 EFLAGS: 00010286 [ 12.166442][ T68] RAX: 00000000ffffffa6 RBX: ff110000051699c0 RCX: 1ff4000000092ed5 [ 12.166697][ T68] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff11000005169a70 [ 12.167077][ T68] RBP: ff110000089d1000 R08: 1fe2200000a2d34f R09: ff11000008bfaed0 [ 12.167331][ T68] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff [ 12.167591][ T68] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 [ 12.167848][ T68] FS: 0000000000000000(0000) GS:ff11000078679000(0000) knlGS:0000000000000000 [ 12.168156][ T68] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 12.168375][ T68] CR2: 00007f4200c9f8ce CR3: 000000000e4d0005 CR4: 0000000000771ef0 [ 12.168630][ T68] PKRU: 55555554 [ 12.168785][ T68] Call Trace: [ 12.168943][ T68] [ 12.169066][ T68] unregister_netdevice_many_notify (net/core/dev.c:12439) [ 12.169294][ T68] ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3)) [ 12.169532][ T68] ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3)) [ 12.169734][ T68] default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089) [ 12.169943][ T68] ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7)) [ 12.170144][ T68] ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3)) [ 12.170349][ T68] ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252) [ 12.170542][ T68] ? rtnl_net_dumpid_one (net/core/net_namespace.c:1094) [ 12.170749][ T68] cleanup_net (net/core/net_namespace.c:702) [ 12.170941][ T68] ? net_passive_dec (./include/linux/llist.h:241) [ 12.171125][ T68] ? process_one_work (kernel/workqueue.c:3290 (discriminator 2)) [ 12.171324][ T68] ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22)) [ 12.171504][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 12.171721][ T68] process_one_work (kernel/workqueue.c:3314) [ 12.171939][ T68] ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4)) [ 12.172135][ T68] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1)) [ 12.172342][ T68] worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478) [ 12.172518][ T68] ? rescuer_thread (./include/linux/list.h:404 (discriminator 3)) [ 12.172709][ T68] ? __kthread_parkme (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/kthread.c:272) [ 12.172904][ T68] ? rescuer_thread (./include/linux/list.h:404 (discriminator 3)) [ 12.173086][ T68] kthread (kernel/kthread.c:436) [ 12.173244][ T68] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 12.173463][ T68] ? kthread_affine_node (kernel/kthread.c:378) [ 12.173658][ T68] ret_from_fork (arch/x86/kernel/process.c:158) [ 12.173833][ T68] ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37) [ 12.174066][ T68] ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663) [ 12.174251][ T68] ? 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