====================================== | xx__-> [ 10.255918][ T167] ------------[ cut here ]------------ | [ 10.256178][ T167] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: unshare/167 | [ 10.256527][ T167] Modules linked in: | [ 10.257079][ T167] Tainted: [W]=WARN [ 10.257298][ T167] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.257523][ T167] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 10.257753][ 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 [ 10.258379][ T167] RSP: 0018:ffa00000007e7ab0 EFLAGS: 00010286 [ 10.258605][ T167] RAX: 00000000ffffffa6 RBX: ff1100000955d0c0 RCX: 1ff40000000fcf1c [ 10.259449][ T167] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000955d170 [ 10.259705][ T167] RBP: ff11000008d04000 R08: 1fe22000012aba2f R09: ff1100000c3c2e80 [ 10.259973][ T167] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff [ 10.260244][ T167] R13: 0000000000000000 R14: 0000000000000000 R15: ff11000008d04000 [ 10.260500][ T167] FS: 00007fcc8b1cd740(0000) GS:ff11000078cd3000(0000) knlGS:0000000000000000 [ 10.260790][ T167] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 10.261024][ T167] CR2: 0000562be3d44310 CR3: 000000000cf17003 CR4: 0000000000771ef0 [ 10.261309][ T167] PKRU: 55555554 [ 10.261509][ T167] Call Trace: [ 10.261781][ T167] [ 10.261927][ T167] ? ip6_route_dev_notify (net/ipv6/route.c:6484) [ 10.262125][ T167] rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551) [ 10.262330][ T167] ? notifier_call_chain (kernel/notifier.c:85) [ 10.262519][ T167] rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560) [ 10.262675][ T167] register_netdevice (net/core/dev.c:11488) [ 10.262877][ T167] ? unregister_netdevice_queue (./include/linux/list.h:162) [ 10.263110][ T167] register_netdev (net/core/dev.c:11552) [ 10.263305][ T167] loopback_net_init (drivers/net/loopback.c:218) [ 10.263497][ T167] ops_init (net/core/net_namespace.c:137) [ 10.263652][ T167] setup_net (net/core/net_namespace.c:446) [ 10.263805][ T167] ? unregister_pernet_device (net/core/net_namespace.c:1503) [ 10.264003][ T167] ? lockdep_init_map_type (kernel/locking/lockdep.c:4973) [ 10.264211][ T167] ? mutex_init_lockdep (./include/linux/lockdep.h:135 ./include/linux/lockdep.h:142 kernel/locking/mutex.c:185) [ 10.264413][ T167] copy_net_ns (net/core/net_namespace.c:579) [ 10.264604][ T167] create_new_namespaces (kernel/nsproxy.c:132) [ 10.264795][ T167] unshare_nsproxy_namespaces (kernel/nsproxy.c:234 (discriminator 4)) [ 10.264995][ T167] ksys_unshare (kernel/fork.c:3243) [ 10.265198][ T167] ? walk_process_tree (kernel/fork.c:3036 (discriminator 19)) [ 10.265388][ T167] __x64_sys_unshare (kernel/fork.c:3317 kernel/fork.c:3315 kernel/fork.c:3315) [ 10.265573][ T167] ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89) [ 10.265759][ T167] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 10.265966][ T167] ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1)) [ 10.266171][ T167] ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3)) [ 10.266371][ T167] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 10.266595][ T167] RIP: 0033:0x7fcc8b2c8bcb [ 10.266793][ 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 [ 10.267378][ T167] RSP: 002b:00007ffc0eaa9578 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 [ 10.267633][ T167] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcc8b2c8bcb [ 10.267899][ T167] RDX: 0000000000000000 RSI: 00007ffc0eaa92e0 RDI: 0000000040000000 [ 10.268161][ T167] RBP: 00007ffc0eaa9900 R08: 00007ffc0eaa94d0 R09: 0000000000000000 [ 10.268420][ T167] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000040000000 [ 10.268671][ T167] R13: 0000000000000000 R14: 00000000ffffffff R15: 0000562be3d47b68 | [ 10.288473][ T167] ------------[ cut here ]------------ | [ 10.288654][ T167] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: packetdrill/167 | [ 10.289297][ T167] Modules linked in: | [ 10.289793][ T167] Tainted: [W]=WARN [ 10.289949][ T167] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.290161][ T167] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 10.290388][ 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 [ 10.290888][ T167] RSP: 0018:ffa00000007e7b58 EFLAGS: 00010286 [ 10.291110][ T167] RAX: 00000000ffffffa6 RBX: ff1100000b67e040 RCX: 1ff40000000fcf31 [ 10.291349][ T167] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000b67e0f0 [ 10.291586][ T167] RBP: ff1100000b568000 R08: 1fe22000016cfc1f R09: ff1100000c3c2e58 [ 10.291817][ T167] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff [ 10.292069][ T167] R13: 0000000000000000 R14: 0000000000000000 R15: ff1100000b568000 [ 10.292312][ T167] FS: 000000000d8b2400(0000) GS:ff11000078cd3000(0000) knlGS:0000000000000000 [ 10.292580][ T167] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 10.292785][ T167] CR2: 00007fe9bf5e3000 CR3: 000000000c3e5004 CR4: 0000000000771ef0 [ 10.293038][ T167] PKRU: 55555554 [ 10.293187][ T167] Call Trace: [ 10.293330][ T167] [ 10.293445][ 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)) [ 10.293625][ T167] rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551) [ 10.293800][ T167] ? notifier_call_chain (kernel/notifier.c:85) [ 10.293987][ T167] rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560) [ 10.294146][ T167] register_netdevice (net/core/dev.c:11488) [ 10.294336][ T167] ? unregister_netdevice_queue (./include/linux/list.h:162) [ 10.294540][ T167] ? alloc_netdev_mqs (net/core/dev.c:12133) [ 10.294716][ T167] tun_set_iff.constprop.0 (drivers/net/tun.c:2876) [ 10.294908][ T167] ? tun_attach.isra.0 (./include/linux/ptr_ring.h:601) [ 10.295093][ T167] ? tun_get (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) drivers/net/tun.c:803 (discriminator 2)) [ 10.295255][ T167] __tun_chr_ioctl (drivers/net/tun.c:3157) [ 10.295430][ T167] ? build_open_flags (fs/open.c:1212) [ 10.295605][ T167] ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) [ 10.295778][ T167] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 10.295968][ T167] ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381) [ 10.296159][ T167] ? fput_close_sync (fs/file_table.c:615) [ 10.296338][ T167] ? __ia32_sys_open (fs/open.c:1374) [ 10.296513][ T167] __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583) [ 10.296688][ T167] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 10.296874][ T167] ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1)) [ 10.297056][ T167] ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3)) [ 10.297247][ T167] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 10.297449][ T167] RIP: 0033:0x47cc8d [ 10.297601][ 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 [ 10.298114][ T167] RSP: 002b:00007fff22d43ea0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 10.298361][ T167] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 000000000047cc8d [ 10.298596][ T167] RDX: 00007fff22d43f20 RSI: 00000000400454ca RDI: 0000000000000005 [ 10.298841][ T167] RBP: 00007fff22d43ef0 R08: 0000000000000000 R09: 0000000000000000 [ 10.299081][ T167] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff22d443f8 [ 10.299327][ T167] R13: 00007fff22d44480 R14: 0000000000000002 R15: 0000000000543540 | [ 10.301457][ T167] ------------[ cut here ]------------ | [ 10.301624][ T167] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: packetdrill/167 | [ 10.301927][ T167] Modules linked in: | [ 10.302415][ T167] Tainted: [W]=WARN [ 10.302556][ T167] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.302755][ T167] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 10.302978][ 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 [ 10.303485][ T167] RSP: 0018:ffa00000007e7c58 EFLAGS: 00010286 [ 10.303697][ T167] RAX: 00000000ffffffa6 RBX: ff1100000b67fcc0 RCX: 1ff40000000fcf51 [ 10.303940][ T167] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000b67fd70 [ 10.304190][ T167] RBP: ff1100000b568000 R08: 1fe22000016cffaf R09: ff1100000c3c2e58 [ 10.304423][ T167] R10: 0000000000000002 R11: 0000000000000001 R12: 0000000000000000 [ 10.304651][ T167] R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000002 [ 10.304895][ T167] FS: 000000000d8b2400(0000) GS:ff11000078cd3000(0000) knlGS:0000000000000000 [ 10.305173][ T167] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 10.305380][ T167] CR2: 00007fe9bf5e3000 CR3: 000000000c3e5004 CR4: 0000000000771ef0 [ 10.305611][ T167] PKRU: 55555554 [ 10.305750][ T167] Call Trace: [ 10.305904][ T167] [ 10.306017][ T167] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 10.306211][ T167] rtnetlink_event (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:7121) [ 10.306387][ T167] notifier_call_chain (kernel/notifier.c:85) [ 10.306564][ 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) [ 10.306734][ T167] ? netdev_sync_lower_features (net/core/dev.c:10883) [ 10.306950][ T167] __tun_chr_ioctl (drivers/net/tun.c:2963 drivers/net/tun.c:3285) [ 10.307135][ T167] ? tun_chr_read_iter (drivers/net/tun.c:2271 (discriminator 1)) [ 10.307320][ T167] ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1)) [ 10.307495][ T167] ? update_socket_protocol+0x10/0x10 [ 10.307671][ T167] ? alloc_file_clone (fs/file_table.c:477) [ 10.307859][ T167] __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583) [ 10.308040][ T167] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 10.308220][ T167] ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1)) [ 10.308399][ T167] ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3)) [ 10.308571][ T167] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 10.308770][ T167] RIP: 0033:0x47cc8d [ 10.308933][ 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 [ 10.309431][ T167] RSP: 002b:00007fff22d43ee0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 10.309662][ T167] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 000000000047cc8d [ 10.309905][ T167] RDX: 000000000000000f RSI: 00000000400454d0 RDI: 0000000000000005 [ 10.310147][ T167] RBP: 00007fff22d43f30 R08: 0000000000000000 R09: 0000000000000000 [ 10.310382][ T167] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff22d443f8 [ 10.310617][ T167] R13: 00007fff22d44480 R14: 0000000000000002 R15: 0000000000543540 | [ 10.319192][ T167] ------------[ cut here ]------------ | [ 10.319383][ T167] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: packetdrill/167 | [ 10.319689][ T167] Modules linked in: | [ 10.320260][ T167] Tainted: [W]=WARN [ 10.320409][ T167] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.320621][ T167] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 10.320860][ 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 [ 10.321385][ T167] RSP: 0018:ffa00000007e7850 EFLAGS: 00010286 [ 10.321599][ T167] RAX: 00000000ffffffa6 RBX: ff1100000b67f0c0 RCX: 1ff40000000fced0 [ 10.321859][ T167] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000b67f170 [ 10.322109][ T167] RBP: ff1100000b568000 R08: 1fe22000016cfe2f R09: ff1100000c3c2e58 [ 10.322357][ T167] R10: 0000000000000002 R11: 0000000000000001 R12: 0000000000000001 [ 10.322597][ T167] R13: 0000000000000000 R14: 0000000000000000 R15: ff110000058b8900 [ 10.322859][ T167] FS: 000000000d8b2400(0000) GS:ff11000078cd3000(0000) knlGS:0000000000000000 [ 10.323146][ T167] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 10.323368][ T167] CR2: 00007fe9bf5e3000 CR3: 000000000c3e5004 CR4: 0000000000771ef0 [ 10.323613][ T167] PKRU: 55555554 [ 10.323759][ T167] Call Trace: [ 10.323918][ T167] [ 10.324043][ T167] rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551) [ 10.324239][ T167] rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560) [ 10.324390][ T167] ? mark_held_locks (kernel/locking/lockdep.c:4325) [ 10.324569][ T167] __dev_notify_flags (net/core/dev.c:9787) [ 10.324754][ T167] ? netif_change_name (net/core/dev.c:1495) [ 10.324950][ T167] ? __dev_change_flags (net/core/dev.c:9752) [ 10.325142][ T167] ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1)) [ 10.325329][ T167] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1)) [ 10.325514][ T167] netif_change_flags (net/core/dev.c:9820) [ 10.325693][ T167] ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22)) [ 10.325888][ T167] dev_change_flags (net/core/dev_api.c:68) [ 10.326078][ T167] devinet_ioctl (net/ipv4/devinet.c:1199) [ 10.326273][ T167] ? inet_ifa_byprefix (net/ipv4/devinet.c:619 (discriminator 9)) [ 10.326454][ T167] ? _copy_from_user (./include/linux/instrumented.h:146 ./include/linux/uaccess.h:184 lib/usercopy.c:18) [ 10.326638][ T167] inet_ioctl (net/ipv4/af_inet.c:1011) [ 10.326789][ T167] ? inet_dgram_connect (net/ipv4/af_inet.c:589) [ 10.326986][ T167] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 10.327188][ T167] ? __might_fault (mm/memory.c:7340 (discriminator 5)) [ 10.327372][ T167] ? __might_fault (mm/memory.c:7340 (discriminator 5)) [ 10.327563][ T167] sock_do_ioctl (net/socket.c:1313) [ 10.327745][ T167] ? __sock_recv_cmsgs (./include/net/sock.h:2867) [ 10.327942][ T167] ? ioctl_file_clone (fs/ioctl.c:244) [ 10.328137][ T167] sock_ioctl (net/socket.c:1434) [ 10.328301][ T167] ? br_ioctl_call (net/socket.c:1279) [ 10.328487][ T167] ? fd_install (./include/linux/rcupdate.h:963 (discriminator 1) fs/file.c:699 (discriminator 1)) [ 10.328671][ T167] ? update_socket_protocol+0x10/0x10 [ 10.328870][ T167] ? alloc_file_clone (fs/file_table.c:477) [ 10.329062][ T167] __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:597 fs/ioctl.c:583 fs/ioctl.c:583) [ 10.329261][ T167] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 10.329440][ T167] ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1)) [ 10.329707][ T167] ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3)) [ 10.329906][ T167] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 10.330127][ T167] RIP: 0033:0x47cc8d [ 10.330289][ 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 [ 10.330894][ T167] RSP: 002b:00007fff22d43ec0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 10.331247][ T167] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 000000000047cc8d [ 10.331495][ T167] RDX: 00007fff22d43f30 RSI: 0000000000008914 RDI: 0000000000000006 [ 10.331735][ T167] RBP: 00007fff22d43f10 R08: 0000000000000000 R09: 0000000000000000 [ 10.332084][ T167] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff22d443f8 [ 10.332338][ T167] R13: 00007fff22d44480 R14: 0000000000000002 R15: 0000000000543540 | [ 100.190675][ T167] ------------[ cut here ]------------ | [ 100.190936][ T167] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: packetdrill/167 | [ 100.191292][ T167] Modules linked in: | [ 100.191861][ T167] Tainted: [W]=WARN [ 100.192019][ T167] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 100.192258][ T167] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 100.192495][ 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 [ 100.193636][ T167] RSP: 0018:ffa00000007e76f0 EFLAGS: 00010286 [ 100.194627][ T167] RAX: 00000000ffffffa6 RBX: ff1100000298bb40 RCX: 1ff40000000fcea4 [ 100.195399][ T167] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100000298bbf0 [ 100.195657][ T167] RBP: ff1100000b568000 R08: 1fe220000053177f R09: ff1100000c3c2e58 [ 100.195941][ T167] R10: 0000000000000002 R11: 0000000000000001 R12: 0000000000000041 [ 100.196208][ T167] R13: 0000000000000000 R14: 0000000000000000 R15: ffa00000007e7790 [ 100.196477][ T167] FS: 0000000000000000(0000) GS:ff11000078cd3000(0000) knlGS:0000000000000000 [ 100.196782][ T167] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 100.197016][ T167] CR2: 00005600e3b48c60 CR3: 0000000014739001 CR4: 0000000000771ef0 [ 100.197284][ T167] PKRU: 55555554 [ 100.197438][ T167] Call Trace: [ 100.197590][ T167] [ 100.197714][ T167] rtmsg_ifinfo_event.part.0 (net/core/rtnetlink.c:4551) [ 100.197933][ T167] rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4560) [ 100.198094][ T167] netif_close_many (net/core/dev.c:1804) [ 100.198296][ T167] ? asym_cpu_capacity_scan (./include/linux/rculist.h:103) [ 100.198488][ T167] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1)) [ 100.198679][ T167] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 100.198891][ T167] ? __dev_close_many (net/core/dev.c:1781) [ 100.199081][ T167] ? netif_close_many_and_unlock (net/core/dev.c:12330) [ 100.199319][ T167] unregister_netdevice_many_notify (net/core/dev.c:12406) [ 100.199547][ T167] ? select_fallback_rq (kernel/sched/sched.h:1383) [ 100.199740][ T167] ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3)) [ 100.199981][ T167] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 100.200174][ T167] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 100.200363][ T167] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535) [ 100.200555][ T167] ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2)) [ 100.200745][ T167] unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299) [ 100.200959][ T167] ? mark_held_locks (kernel/locking/lockdep.c:4325) [ 100.201150][ T167] ? unregister_netdevice_many (net/core/dev.c:12497) [ 100.201357][ T167] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 100.201558][ T167] ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6)) [ 100.201785][ T167] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) [ 100.202034][ T167] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) [ 100.202281][ T167] __fput (fs/file_table.c:510) [ 100.202474][ T167] task_work_run (kernel/task_work.c:233) [ 100.202708][ T167] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 100.202948][ T167] ? task_work_cancel (kernel/task_work.c:190) [ 100.203145][ T167] ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377) [ 100.203344][ T167] do_exit (./include/linux/task_work.h:40 kernel/exit.c:976) [ 100.203502][ T167] ? exit_notify (kernel/exit.c:748) [ 100.203691][ T167] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 100.203907][ T167] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535) [ 100.204099][ T167] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 100.204306][ T167] do_group_exit (kernel/exit.c:1119) [ 100.204495][ T167] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2)) [ 100.204718][ T167] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 100.204932][ T167] ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206) [ 100.205125][ T167] ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1)) [ 100.205323][ T167] get_signal (kernel/signal.c:3037) [ 100.205520][ T167] ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4)) [ 100.205710][ T167] ? __ia32_sys_getpeername (net/socket.c:2219) [ 100.205926][ T167] ? ptrace_signal (./include/linux/signal.h:87) [ 100.206119][ T167] arch_do_signal_or_restart (arch/x86/kernel/signal.c:337) [ 100.206323][ T167] ? get_sigframe_size (arch/x86/kernel/signal.c:233) [ 100.206524][ T167] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 100.206719][ T167] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 100.207014][ T167] exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98) [ 100.207349][ T167] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 100.207574][ 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) [ 100.207764][ T167] ? irq_exit_rcu (kernel/softirq.c:754) [ 100.208014][ T167] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 100.208347][ T167] RIP: 0033:0x4c2d9e [ 100.208509][ T167] Code: Unable to access opcode bytes at 0x4c2d74. Code starting with the faulting instruction =========================================== [ 100.208761][ T167] RSP: 002b:00007fff22d43850 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 100.209247][ T167] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e [ 100.209502][ T167] RDX: 0000000000000014 RSI: 00007fff22d43930 RDI: 0000000000000007 [ 100.209754][ T167] RBP: 00007fff22d43860 R08: 00007fff22d438f0 R09: 000000000000000c [ 100.210125][ T167] R10: 0000000000000000 R11: 0000000000000202 R12: 000000000d8bd980 [ 100.210384][ T167] R13: 00007fff22d44480 R14: 00007fff22d43a20 R15: 0000000000543540 | [ 100.217336][ T167] ------------[ cut here ]------------ | [ 100.217524][ T167] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#2: packetdrill/167 | [ 100.217855][ T167] Modules linked in: | [ 100.218375][ T167] Tainted: [W]=WARN [ 100.218526][ T167] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 100.218742][ T167] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 100.219529][ 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 [ 100.220610][ T167] RSP: 0018:ffa00000007e7820 EFLAGS: 00010286 [ 100.221372][ T167] RAX: 00000000ffffffa6 RBX: ff11000009565540 RCX: 1ff40000000fceca [ 100.222142][ T167] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff110000095655f0 [ 100.222719][ T167] RBP: ff1100000b568000 R08: 1fe22000012acabf R09: ff1100000c3c2e58 [ 100.222985][ T167] R10: 0000000000000002 R11: 0000000000000001 R12: 00000000ffffffff [ 100.223243][ T167] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 [ 100.223493][ T167] FS: 0000000000000000(0000) GS:ff11000078cd3000(0000) knlGS:0000000000000000 [ 100.223781][ T167] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 100.224009][ T167] CR2: 00005600e3b48c60 CR3: 0000000014739001 CR4: 0000000000771ef0 [ 100.224269][ T167] PKRU: 55555554 [ 100.224418][ T167] Call Trace: [ 100.224566][ T167] [ 100.224685][ T167] unregister_netdevice_many_notify (net/core/dev.c:12439) [ 100.224925][ T167] ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3)) [ 100.225139][ T167] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 100.225353][ T167] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 100.225538][ T167] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535) [ 100.225721][ T167] ? __queue_work (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) kernel/workqueue.c:2402 (discriminator 2)) [ 100.225930][ T167] unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309 net/core/dev.c:12299) [ 100.226114][ T167] ? mark_held_locks (kernel/locking/lockdep.c:4325) [ 100.226306][ T167] ? unregister_netdevice_many (net/core/dev.c:12497) [ 100.226488][ T167] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 100.226669][ T167] ? queue_delayed_work_on (kernel/workqueue.c:2616 (discriminator 6)) [ 100.226875][ T167] __tun_detach (./include/linux/netdevice.h:3455 drivers/net/tun.c:628) [ 100.227063][ T167] tun_chr_close (drivers/net/tun.c:644 drivers/net/tun.c:3505) [ 100.227259][ T167] __fput (fs/file_table.c:510) [ 100.227416][ T167] task_work_run (kernel/task_work.c:233) [ 100.227598][ T167] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 100.227789][ T167] ? task_work_cancel (kernel/task_work.c:190) [ 100.227987][ T167] ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6250 mm/slub.c:6377) [ 100.228175][ T167] do_exit (./include/linux/task_work.h:40 kernel/exit.c:976) [ 100.228327][ T167] ? exit_notify (kernel/exit.c:748) [ 100.228508][ T167] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 100.228692][ T167] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535) [ 100.228898][ T167] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 100.229082][ T167] do_group_exit (kernel/exit.c:1119) [ 100.229272][ T167] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2)) [ 100.229486][ T167] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 100.229666][ T167] ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206) [ 100.229871][ T167] ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1)) [ 100.230052][ T167] get_signal (kernel/signal.c:3037) [ 100.230248][ T167] ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4)) [ 100.230432][ T167] ? __ia32_sys_getpeername (net/socket.c:2219) [ 100.230615][ T167] ? ptrace_signal (./include/linux/signal.h:87) [ 100.230807][ T167] arch_do_signal_or_restart (arch/x86/kernel/signal.c:337) [ 100.231004][ T167] ? get_sigframe_size (arch/x86/kernel/signal.c:233) [ 100.231195][ T167] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 100.231380][ T167] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 100.231595][ T167] exit_to_user_mode_loop (kernel/entry/common.c:64 kernel/entry/common.c:98) [ 100.231787][ T167] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 100.231983][ 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) [ 100.232167][ T167] ? irq_exit_rcu (kernel/softirq.c:754) [ 100.232351][ T167] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 100.232565][ T167] RIP: 0033:0x4c2d9e [ 100.232721][ T167] Code: Unable to access opcode bytes at 0x4c2d74. Code starting with the faulting instruction =========================================== [ 100.232965][ T167] RSP: 002b:00007fff22d43850 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 100.233223][ T167] RAX: 0000000000000014 RBX: 0000000000000016 RCX: 00000000004c2d9e [ 100.233466][ T167] RDX: 0000000000000014 RSI: 00007fff22d43930 RDI: 0000000000000007 [ 100.233709][ T167] RBP: 00007fff22d43860 R08: 00007fff22d438f0 R09: 000000000000000c [ 100.233986][ T167] R10: 0000000000000000 R11: 0000000000000202 R12: 000000000d8bd980 [ 100.234245][ T167] R13: 00007fff22d44480 R14: 00007fff22d43a20 R15: 0000000000543540 | [ 100.259318][ T68] ------------[ cut here ]------------ | [ 100.259540][ T68] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0x1a6/0x250, CPU#0: 1/68 | [ 100.259814][ T68] Modules linked in: | [ 100.260267][ T68] Tainted: [W]=WARN [ 100.260361][ T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 100.260516][ T68] Workqueue: netns cleanup_net [ 100.260656][ T68] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3)) [ 100.260977][ 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 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 [ 100.261419][ T68] RSP: 0018:ffa0000000497878 EFLAGS: 00010286 [ 100.261580][ T68] RAX: 00000000ffffffa6 RBX: ff11000009564940 RCX: 1ff4000000092ed5 [ 100.261765][ T68] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff110000095649f0 [ 100.261998][ T68] RBP: ff11000008d04000 R08: 1fe22000012ac93f R09: ff11000008cc2ed0 [ 100.262183][ T68] R10: 0000000000000000 R11: 0000000000000001 R12: 00000000ffffffff [ 100.262363][ T68] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 [ 100.262549][ T68] FS: 0000000000000000(0000) GS:ff11000078bd3000(0000) knlGS:0000000000000000 [ 100.262764][ T68] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 100.262930][ T68] CR2: 00007fcdca6f8680 CR3: 0000000014739001 CR4: 0000000000771ef0 [ 100.263121][ T68] PKRU: 55555554 [ 100.263240][ T68] Call Trace: [ 100.263366][ T68] [ 100.263456][ T68] unregister_netdevice_many_notify (net/core/dev.c:12439) [ 100.263652][ T68] ? unregister_netdevice_queued (./include/linux/list.h:404 (discriminator 3)) [ 100.263814][ T68] ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3)) [ 100.263946][ T68] default_device_exit_batch (net/core/dev.c:12497 net/core/dev.c:13089) [ 100.264068][ T68] ? generic_xdp_install (./include/linux/netdevice.h:5659) [ 100.264195][ T68] ? ipmr_free_table (net/ipv4/ipmr.c:453) [ 100.264320][ T68] ? unregister_netdev (./include/net/net_namespace.h:419 (discriminator 7)) [ 100.264443][ T68] ? rtnl_is_locked (net/core/rtnetlink.c:169) [ 100.264565][ T68] ? nexthop_net_exit_rtnl (./include/linux/rtnetlink.h:150 (discriminator 1) net/ipv4/nexthop.c:4145 (discriminator 1)) [ 100.264688][ T68] ops_undo_list (net/core/net_namespace.c:205 net/core/net_namespace.c:252) [ 100.264814][ T68] ? rtnl_net_dumpid_one (net/core/net_namespace.c:1094) [ 100.264941][ T68] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535) [ 100.265067][ T68] cleanup_net (net/core/net_namespace.c:702) [ 100.265214][ T68] ? net_passive_dec (./include/linux/llist.h:241) [ 100.265336][ T68] ? process_one_work (kernel/workqueue.c:3290 (discriminator 2)) [ 100.265463][ T68] ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22)) [ 100.265585][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3)) [ 100.265714][ T68] process_one_work (kernel/workqueue.c:3314) [ 100.265867][ T68] ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4)) [ 100.265989][ T68] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1)) [ 100.266115][ T68] worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478) [ 100.266242][ T68] ? rescuer_thread (./include/linux/list.h:404 (discriminator 3)) [ 100.266367][ T68] ? __kthread_parkme (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/kthread.c:272) [ 100.266491][ T68] ? rescuer_thread (./include/linux/list.h:404 (discriminator 3)) [ 100.266613][ T68] kthread (kernel/kthread.c:436) [ 100.266707][ T68] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 100.266873][ T68] ? kthread_affine_node (kernel/kthread.c:378) [ 100.266997][ T68] ret_from_fork (arch/x86/kernel/process.c:158) [ 100.267120][ T68] ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37) [ 100.267278][ T68] ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663) [ 100.267402][ 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: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