====================================== | xx__-> [ 8.510974][ T174] ------------[ cut here ]------------ | [ 8.511163][ T174] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: ip/174 | [ 8.511396][ T174] Modules linked in: | [ 8.511842][ T174] Tainted: [W]=WARN [ 8.511937][ T174] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 8.512093][ T174] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 8.512258][ 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 [ 8.512700][ T174] RSP: 0018:ffa0000000817aa8 EFLAGS: 00010286 [ 8.512862][ T174] RAX: 00000000ffffffa6 RBX: ff11000009ded0c0 RCX: 1ff4000000102f1b [ 8.513049][ T174] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff11000009ded170 [ 8.513236][ T174] RBP: ff11000005b8c000 R08: 1fe22000013bda2f R09: ff1100001369d180 [ 8.513424][ T174] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff [ 8.513612][ T174] R13: 0000000000000000 R14: 0000000000000000 R15: ff11000005b8c000 [ 8.513801][ T174] FS: 00007f0bdee1f840(0000) GS:ff11000091f79000(0000) knlGS:0000000000000000 [ 8.514029][ T174] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 8.514186][ T174] CR2: 0000000000479648 CR3: 000000000a698005 CR4: 0000000000771ef0 [ 8.514373][ T174] PKRU: 55555554 [ 8.514471][ T174] Call Trace: [ 8.514566][ T174] [ 8.514633][ T174] ? ip6_route_dev_notify (net/ipv6/route.c:6484) [ 8.514763][ T174] rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551) [ 8.514894][ T174] ? notifier_call_chain (kernel/notifier.c:85) [ 8.515020][ T174] rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560) [ 8.515115][ T174] register_netdevice (net/core/dev.c:11488) [ 8.515241][ T174] ? unregister_netdevice_queue (./include/linux/list.h:162) [ 8.515400][ T174] ? alloc_netdev_mqs (net/core/dev.c:12133) [ 8.515528][ T174] register_netdev (net/core/dev.c:11552) [ 8.515653][ T174] loopback_net_init (drivers/net/loopback.c:218) [ 8.515803][ T174] ops_init (net/core/net_namespace.c:137) [ 8.515905][ T174] setup_net (net/core/net_namespace.c:446) [ 8.516000][ T174] ? unregister_pernet_device (net/core/net_namespace.c:1503) [ 8.516124][ T174] ? lockdep_init_map_type (kernel/locking/lockdep.c:4973) [ 8.516249][ T174] ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185) [ 8.516375][ T174] copy_net_ns (net/core/net_namespace.c:579) [ 8.516506][ T174] create_new_namespaces (kernel/nsproxy.c:132) [ 8.516635][ T174] unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4)) [ 8.516759][ T174] ksys_unshare (kernel/fork.c:3243) [ 8.516888][ T174] ? walk_process_tree (kernel/fork.c:3036 (discriminator 19)) [ 8.517013][ T174] ? __ia32_sys_open (fs/open.c:1374) [ 8.517140][ T174] __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315) [ 8.517263][ T174] ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89) [ 8.517393][ T174] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 8.517517][ T174] ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1)) [ 8.517642][ T174] ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3)) [ 8.517766][ T174] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 8.517926][ T174] RIP: 0033:0x7f0bdf0e1bcb [ 8.518057][ 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 [ 8.518510][ T174] RSP: 002b:00007fffc1a47cc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000110 [ 8.518701][ T174] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f0bdf0e1bcb [ 8.518893][ T174] RDX: 0000000000000000 RSI: 0000000000477309 RDI: 0000000040000000 [ 8.519082][ T174] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 [ 8.519269][ T174] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffc1a49ef0 [ 8.519457][ T174] R13: 0000000000000001 R14: 00007f0bdee1f6f8 R15: 00007fffc1a4b86a | [ 8.643892][ T173] ------------[ cut here ]------------ | [ 8.644155][ T173] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: python3/173 | [ 8.644570][ T173] Modules linked in: netdevsim | [ 8.645237][ T173] Tainted: [W]=WARN [ 8.645411][ T173] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 8.645659][ T173] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 8.645953][ 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 [ 8.646554][ T173] RSP: 0018:ffa0000000797500 EFLAGS: 00010286 [ 8.646799][ T173] RAX: 00000000ffffffa6 RBX: ff1100000b5a56c0 RCX: 1ff40000000f2e66 [ 8.647091][ T173] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000b5a5770 [ 8.647372][ T173] RBP: ff1100000b522000 R08: 1fe22000016b4aef R09: ff1100001369af48 [ 8.647661][ T173] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff [ 8.647953][ T173] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000b522000 [ 8.648237][ T173] FS: 00007f8e763b6400(0000) GS:ff11000092079000(0000) knlGS:0000000000000000 [ 8.648563][ T173] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 8.648806][ T173] CR2: 000055b748c41140 CR3: 0000000005096003 CR4: 0000000000771ef0 [ 8.649102][ T173] PKRU: 55555554 [ 8.649266][ T173] Call Trace: [ 8.649435][ T173] [ 8.649563][ T173] rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551) [ 8.649769][ T173] rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560) [ 8.649945][ T173] register_netdevice (net/core/dev.c:11488) [ 8.650150][ T173] ? unregister_netdevice_queue (./include/linux/list.h:162) [ 8.650387][ T173] ? __debugfs_create_file (fs/debugfs/inode.c:412 fs/debugfs/inode.c:452) [ 8.650604][ T173] nsim_init_netdevsim (drivers/net/netdevsim/netdev.c:1069) netdevsim [ 8.650865][ T173] nsim_create (drivers/net/netdevsim/netdev.c:1151) netdevsim [ 8.651070][ T173] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1509) netdevsim [ 8.651313][ T173] ? add_timer_on (kernel/time/timer.c:925 (discriminator 5)) [ 8.651524][ T173] ? nsim_dev_get_vfs (drivers/net/netdevsim/dev.c:65) netdevsim [ 8.651766][ 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)) [ 8.651982][ T173] ? static_obj (kernel/locking/lockdep.c:858) [ 8.652147][ T173] ? mark_held_locks (kernel/locking/lockdep.c:4325) [ 8.652352][ T173] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:713 ./include/linux/workqueue.h:855 drivers/net/netdevsim/hwstats.c:439) netdevsim [ 8.652598][ T173] nsim_drv_probe (drivers/net/netdevsim/dev.c:1570 drivers/net/netdevsim/dev.c:1731) netdevsim [ 8.652859][ T173] call_driver_probe (drivers/base/dd.c:629) [ 8.653066][ T173] really_probe (drivers/base/dd.c:709) [ 8.653271][ T173] ? driver_probe_device (drivers/base/dd.c:135) [ 8.653476][ T173] __driver_probe_device (drivers/base/dd.c:871) [ 8.653681][ T173] driver_probe_device (drivers/base/dd.c:901) [ 8.653898][ T173] __device_attach_driver (drivers/base/dd.c:1029) [ 8.654111][ T173] bus_for_each_drv (drivers/base/bus.c:500) [ 8.654313][ T173] ? bus_find_device_reverse (drivers/base/bus.c:442) [ 8.654520][ T173] __device_attach (drivers/base/dd.c:1101) [ 8.654721][ T173] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 8.654936][ T173] ? __driver_attach_async_helper (drivers/base/dd.c:1172 (discriminator 1)) [ 8.655177][ 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) [ 8.655380][ T173] ? _raw_spin_unlock (./include/linux/spinlock_api_smp.h:169 (discriminator 1) kernel/locking/spinlock.c:190 (discriminator 1)) [ 8.655598][ T173] device_initial_probe (drivers/base/dd.c:1156) [ 8.655803][ T173] bus_probe_device (drivers/base/bus.c:613) [ 8.656022][ T173] device_add (drivers/base/core.c:3706) [ 8.656227][ T173] ? __fw_devlink_link_to_consumers.isra.0 (./include/linux/property.h:226 (discriminator 3)) [ 8.656475][ T173] ? __init_waitqueue_head (kernel/sched/wait.c:12) [ 8.656678][ T173] ? pm_runtime_init (drivers/base/power/runtime.c:1859) [ 8.656895][ T173] new_device_store (drivers/net/netdevsim/bus.c:471 drivers/net/netdevsim/bus.c:191) netdevsim [ 8.657144][ T173] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535) [ 8.657345][ T173] ? new_port_store (drivers/net/netdevsim/bus.c:99) netdevsim [ 8.657594][ 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)) [ 8.657798][ T173] ? sysfs_file_kobj (./include/linux/rcupdate.h:871 ./include/linux/rcupdate.h:1181 fs/sysfs/file.c:24) [ 8.658013][ T173] ? sysfs_file_ops (fs/sysfs/file.c:38 (discriminator 1)) [ 8.658214][ T173] kernfs_fop_write_iter (fs/kernfs/file.c:352) [ 8.658421][ T173] ? kernfs_ops (fs/kernfs/file.c:128) [ 8.658603][ T173] new_sync_write (fs/read_write.c:595) [ 8.658822][ T173] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 8.659024][ T173] ? new_sync_read (./include/linux/ioprio.h:41) [ 8.659230][ T173] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1)) [ 8.659437][ T173] ? ksys_write (fs/read_write.c:740) [ 8.659645][ T173] vfs_write (fs/read_write.c:688) [ 8.659824][ T173] ksys_write (fs/read_write.c:740) [ 8.659987][ T173] ? __ia32_sys_read (fs/read_write.c:724) [ 8.660194][ T173] ? kernfs_fop_llseek (fs/kernfs/file.c:908) [ 8.660402][ T173] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 8.660609][ T173] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 8.660824][ T173] ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1)) [ 8.661028][ T173] ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3)) [ 8.661235][ T173] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 8.661477][ T173] RIP: 0033:0x7f8e7653e08e [ 8.661686][ 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 [ 8.662295][ T173] RSP: 002b:00007ffedfdee670 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 8.662583][ T173] RAX: ffffffffffffffda RBX: 0000000000000009 RCX: 00007f8e7653e08e [ 8.662874][ T173] RDX: 0000000000000009 RSI: 000055c07648f640 RDI: 0000000000000006 [ 8.663149][ T173] RBP: 00007ffedfdee680 R08: 0000000000000000 R09: 0000000000000000 [ 8.663432][ T173] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f8e763b6390 [ 8.663716][ T173] R13: 000055c07648f640 R14: 0000000000000006 R15: 00007f8e763450d0 | [ 9.165574][ T12] ------------[ cut here ]------------ | [ 9.165763][ T12] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#3: 0/12 | [ 9.166091][ T12] Modules linked in: netdevsim | [ 9.166520][ T12] Tainted: [W]=WARN [ 9.166614][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.166758][ T12] Workqueue: netns cleanup_net [ 9.166929][ T12] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 9.167082][ 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 [ 9.167493][ T12] RSP: 0018:ffa00000000c7878 EFLAGS: 00010286 [ 9.167637][ T12] RAX: 00000000ffffffa6 RBX: ff1100000974a1c0 RCX: 1ff4000000018ed5 [ 9.167815][ T12] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000974a270 [ 9.167984][ T12] RBP: ff11000005b8c000 R08: 1fe22000012e944f R09: ff11000001b051d0 [ 9.168153][ T12] R10: 0000000000000003 R11: 0000000000000001 R12: 00000000ffffffff [ 9.168336][ T12] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 [ 9.168518][ T12] FS: 0000000000000000(0000) GS:ff110000920f9000(0000) knlGS:0000000000000000 [ 9.168717][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 9.168871][ T12] CR2: 00007f6c97a8aab0 CR3: 00000000149e6006 CR4: 0000000000771ef0 [ 9.169046][ T12] PKRU: 55555554 [ 9.169131][ T12] Call Trace: [ 9.169221][ T12] [ 9.169281][ T12] unregister_netdevice_many_notify (net/core/dev.c:12439) [ 9.169432][ T12] ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3)) [ 9.169584][ T12] ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3)) [ 9.169701][ T12] default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089) [ 9.169821][ T12] ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7)) [ 9.169944][ T12] ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3)) [ 9.170060][ T12] ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252) [ 9.170176][ T12] ? rtnl_net_dumpid_one (net/core/net_namespace.c:1094) [ 9.170289][ T12] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535) [ 9.170412][ T12] cleanup_net (net/core/net_namespace.c:702) [ 9.170525][ T12] ? net_passive_dec (./include/linux/llist.h:241) [ 9.170638][ T12] ? process_one_work (kernel/workqueue.c:3290 (discriminator 2)) [ 9.170753][ T12] ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22)) [ 9.170872][ T12] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 9.170989][ T12] process_one_work (kernel/workqueue.c:3314) [ 9.171104][ T12] ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4)) [ 9.171221][ T12] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1)) [ 9.171338][ T12] worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478) [ 9.171459][ T12] ? rescuer_thread (./include/linux/list.h:404 (discriminator 3)) [ 9.171572][ T12] kthread (kernel/kthread.c:436) [ 9.171662][ T12] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 9.171805][ T12] ? kthread_affine_node (kernel/kthread.c:378) [ 9.171957][ T12] ret_from_fork (arch/x86/kernel/process.c:158) [ 9.172072][ T12] ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37) [ 9.172213][ T12] ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663) [ 9.172326][ 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