======================================
| 0
| xx__-> [ 27.850335][ T247] ip (247) used greatest stack depth: 24336 bytes left
| [ 35.813497][ C0] BUG: spinlock bad magic on CPU#0, ip/284
| [ 35.813731][ C0] lock: noop_qdisc+0x240/0x300, .magic: 00000000, .owner: ip/284, .owner_cpu: 0
[ 35.814226][ C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 35.814561][ C0] Call Trace:
[ 35.814697][ C0]
[ 35.814774][ C0] dump_stack_lvl (lib/dump_stack.c:122)
[ 35.814929][ C0] do_raw_spin_unlock (kernel/locking/spinlock_debug.c:100 kernel/locking/spinlock_debug.c:141)
[ 35.815091][ C0] _raw_spin_unlock (./arch/x86/include/asm/preempt.h:94 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186)
[ 35.815237][ C0] net_tx_action (./include/net/sch_generic.h:226 ./include/net/sch_generic.h:217 ./include/net/pkt_sched.h:128 ./include/net/pkt_sched.h:124 net/core/dev.c:5323)
[ 35.815420][ C0] handle_softirqs (kernel/softirq.c:554)
[ 35.815585][ C0] ? dev_deactivate_many (./include/linux/bottom_half.h:33 ./include/linux/netdevice.h:4448 net/sched/sch_generic.c:571 net/sched/sch_generic.c:1363)
[ 35.815758][ C0] do_softirq (kernel/softirq.c:455 kernel/softirq.c:442)
[ 35.815884][ C0]
[ 35.815962][ C0]
[ 35.816044][ C0] __local_bh_enable_ip (kernel/softirq.c:382)
[ 35.816190][ C0] dev_deactivate_many (net/sched/sch_generic.c:1356)
[ 35.816338][ C0] __dev_close_many (net/core/dev.c:1547)
[ 35.816488][ C0] ? __pfx___dev_close_many (net/core/dev.c:1522)
[ 35.816638][ C0] ? mark_held_locks (kernel/locking/lockdep.c:4273)
[ 35.816795][ C0] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358)
[ 35.816971][ C0] __dev_change_flags (./include/linux/list.h:111 ./include/linux/list.h:215 ./include/linux/list.h:229 net/core/dev.c:1571 net/core/dev.c:8836)
[ 35.817133][ C0] ? __pfx___dev_change_flags (net/core/dev.c:8802)
[ 35.817305][ C0] dev_change_flags (net/core/dev.c:8910)
[ 35.817481][ C0] cycle_netdev (drivers/net/vrf.c:1071) vrf
[ 35.817645][ C0] vrf_add_slave (drivers/net/vrf.c:1102 drivers/net/vrf.c:1121) vrf
[ 35.817793][ C0] do_setlink (net/core/rtnetlink.c:2907)
[ 35.817944][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769)
[ 35.818090][ C0] ? __pfx_do_setlink (net/core/rtnetlink.c:2778)
[ 35.818231][ C0] ? is_bpf_text_address (./kernel/bpf/core.c:772)
[ 35.818414][ C0] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94)
[ 35.818569][ C0] ? __kernel_text_address (kernel/extable.c:79)
[ 35.818721][ C0] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364)
[ 35.818869][ C0] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83)
[ 35.819060][ C0] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26)
[ 35.819211][ C0] ? stack_trace_save (kernel/stacktrace.c:123)
[ 35.819354][ C0] ? __pfx_stack_trace_save (kernel/stacktrace.c:114)
[ 35.819520][ C0] ? __pfx_validate_nla (lib/nlattr.c:396)
[ 35.819673][ C0] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3))
[ 35.819781][ C0] ? kasan_save_stack (mm/kasan/common.c:49)
[ 35.819943][ C0] ? __nla_validate_parse (lib/nlattr.c:638)
[ 35.820105][ C0] __rtnl_newlink (net/core/rtnetlink.c:3696)
[ 35.820282][ C0] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:227)
[ 35.820444][ C0] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557)
[ 35.820593][ C0] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358)
[ 35.820782][ C0] ? __create_object (mm/kmemleak.c:751)
[ 35.820932][ C0] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52))
[ 35.821087][ C0] rtnl_newlink (net/core/rtnetlink.c:3744)
[ 35.821201][ C0] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647)
[ 35.821350][ C0] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541)
[ 35.821513][ C0] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:227)
[ 35.821659][ C0] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3))
[ 35.821772][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5142)
[ 35.821921][ C0] netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[ 35.822066][ C0] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541)
[ 35.822207][ C0] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527)
[ 35.822369][ C0] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340)
[ 35.822548][ C0] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333)
[ 35.822691][ C0] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357)
[ 35.822836][ C0] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342)
[ 35.822982][ C0] ? find_held_lock (kernel/locking/lockdep.c:5249)
[ 35.823126][ C0] netlink_sendmsg (net/netlink/af_netlink.c:1901)
[ 35.823275][ C0] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820)
[ 35.823435][ C0] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381)
[ 35.823580][ C0] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279)
[ 35.823724][ C0] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597)
[ 35.823882][ C0] ? __pfx_____sys_sendmsg (net/socket.c:2543)
[ 35.824021][ C0] ? __pfx_copy_msghdr_from_user (net/socket.c:2523)
[ 35.824213][ C0] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824)
[ 35.824360][ C0] ___sys_sendmsg (net/socket.c:2653)
[ 35.824515][ C0] ? __pfx____sys_sendmsg (net/socket.c:2640)
[ 35.824678][ C0] ? find_held_lock (kernel/locking/lockdep.c:5249)
[ 35.824824][ C0] ? __lock_release (kernel/locking/lockdep.c:5435)
[ 35.824981][ C0] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001)
[ 35.825160][ C0] ? __pfx___lock_release (kernel/locking/lockdep.c:5411)
[ 35.825318][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114)
[ 35.825473][ C0] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358)
[ 35.825653][ C0] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145)
[ 35.825797][ C0] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682)
[ 35.825948][ C0] ? __pfx___sys_sendmsg (net/socket.c:2668)
[ 35.826088][ C0] ? __virt_addr_valid (./arch/x86/include/asm/preempt.h:94 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2034 arch/x86/mm/physaddr.c:65)
[ 35.826239][ C0] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)
[ 35.826410][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 35.826609][ C0] RIP: 0033:0x7f24771a77b7
[ 35.826765][ C0] Code: 0a 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
0: 0a 00 or (%rax),%al
2: f7 d8 neg %eax
4: 64 89 02 mov %eax,%fs:(%rdx)
7: 48 c7 c0 ff ff ff ff mov $0xffffffffffffffff,%rax
e: eb b9 jmp 0xffffffffffffffc9
10: 0f 1f 00 nopl (%rax)
13: f3 0f 1e fa endbr64
17: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax
1e: 00
1f: 85 c0 test %eax,%eax
21: 75 10 jne 0x33
23: b8 2e 00 00 00 mov $0x2e,%eax
28: 0f 05 syscall
2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction
30: 77 51 ja 0x83
32: c3 ret
33: 48 83 ec 28 sub $0x28,%rsp
37: 89 54 24 1c mov %edx,0x1c(%rsp)
3b: 48 89 74 24 10 mov %rsi,0x10(%rsp)
Code starting with the faulting instruction
===========================================
0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax
6: 77 51 ja 0x59
8: c3 ret
9: 48 83 ec 28 sub $0x28,%rsp
d: 89 54 24 1c mov %edx,0x1c(%rsp)
11: 48 89 74 24 10 mov %rsi,0x10(%rsp)
[ 35.827268][ C0] RSP: 002b:00007fff7ec20728 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 35.827491][ C0] RAX: ffffffffffffffda RBX: 00007fff7ec20e50 RCX: 00007f24771a77b7
[ 35.827708][ C0] RDX: 0000000000000000 RSI: 00007fff7ec20790 RDI: 0000000000000005
[ 35.827939][ C0] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[ 35.828164][ C0] R10: 0000000002cca910 R11: 0000000000000246 R12: 0000000000000004
Finger prints:
do_raw_spin_unlock:_raw_spin_unlock:net_tx_action:handle_softirqs:do_softirq