======================================
| [    9.829827][  T203] softirqs last disabled at (21580): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [    9.829829][  T203] Preemption disabled at:
| [    9.829830][  T203] vprintk_emit (kernel/printk/printk.c:2471)
| [    9.829839][  T203] Tainted: [W]=WARN
[    9.829840][  T203] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.829841][  T203] Call Trace:
[    9.829843][  T203]  <TASK>
[    9.829844][  T203]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    9.829850][  T203]  ? vprintk_emit (kernel/printk/printk.c:2471)
[    9.829852][  T203]  __might_resched.cold (kernel/sched/core.c:9234)
[    9.829857][  T203]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    9.829861][  T203]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[    9.829866][  T203]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[    9.829869][  T203]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.829874][  T203]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[    9.829877][  T203]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.829880][  T203]  put_chars (drivers/char/virtio_console.c:1176)
[    9.829883][  T203]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    9.829887][  T203]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[    9.829891][  T203]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    9.829894][  T203]  ? mark_usage (kernel/locking/lockdep.c:4690)
[    9.829896][  T203]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.829897][  T203]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.829901][  T203]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    9.829903][  T203]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[    9.829906][  T203]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.829910][  T203]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.829914][  T203]  console_emit_next_record (kernel/printk/printk.c:3183)
[    9.829918][  T203]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    9.829919][  T203]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[    9.829923][  T203]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.829925][  T203]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.829934][  T203]  console_flush_one_record (kernel/printk/printk.c:3268)
[    9.829938][  T203]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    9.829940][  T203]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.829945][  T203]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    9.829948][  T203]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    9.829949][  T203]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.829952][  T203]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[    9.829955][  T203]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    9.829957][  T203]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    9.829960][  T203]  vprintk_emit (kernel/printk/printk.c:2479)
[    9.829964][  T203]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    9.829966][  T203]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    9.829968][  T203]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[    9.829972][  T203]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[    9.829976][  T203]  _printk (kernel/printk/printk.c:2504)
[    9.829979][  T203]  ? snapshot_read.cold (user.c:?)
[    9.829983][  T203]  ? br_multicast_flood (??:?) bridge
[    9.829995][  T203]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[    9.829997][  T203]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[    9.829998][  T203]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[    9.830002][  T203] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[    9.830012][  T203] br_init_port (net/bridge/br_stp_if.c:39) bridge
[    9.830020][  T203] new_nbp (net/bridge/br_if.c:449) bridge
[    9.830029][  T203] br_add_if (net/bridge/br_if.c:592) bridge
[    9.830036][  T203]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[    9.830040][  T203]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[    9.830043][  T203]  ? __kernel_text_address (kernel/extable.c:79)
[    9.830049][  T203]  do_set_master (net/core/rtnetlink.c:3071)
[    9.830054][  T203]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[    9.830057][  T203]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[    9.830060][  T203]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[    9.830061][  T203]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[    9.830063][  T203]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[    9.830067][  T203]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[    9.830070][  T203]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[    9.830072][  T203]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[    9.830074][  T203]  ? kasan_save_stack (mm/kasan/common.c:58)
[    9.830077][  T203]  ? kasan_save_stack (mm/kasan/common.c:57)
[    9.830079][  T203]  ? kasan_save_track (mm/kasan/common.c:78)
[    9.830082][  T203]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.830084][  T203]  ? netlink_seq_next (net/netlink/af_netlink.c:2685)
[    9.830087][  T203]  ? ___sys_sendmsg (net/socket.c:2757)
[    9.830091][  T203]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[    9.830093][  T203]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[    9.830095][  T203]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.830098][  T203]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.830099][  T203]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.830101][  T203]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.830103][  T203]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[    9.830107][  T203]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[    9.830109][  T203]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[    9.830111][  T203]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[    9.830114][  T203]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[    9.830116][  T203]  ? nla_get_range_signed (lib/nlattr.c:270)
[    9.830121][  T203]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[    9.830126][  T203]  rtnl_newlink (net/core/rtnetlink.c:4215)
[    9.830131][  T203]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[    9.830133][  T203]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.830137][  T203]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[    9.830139][  T203]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    9.830141][  T203]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[    9.830143][  T203]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    9.830147][  T203]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[    9.830148][  T203]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[    9.830151][  T203]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[    9.830153][  T203]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.830157][  T203]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[    9.830159][  T203]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    9.830162][  T203]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[    9.830164][  T203]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[    9.830167][  T203]  ? netlink_ack (./include/linux/skbuff.h:2718)
[    9.830173][  T203]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[    9.830174][  T203]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[    9.830178][  T203]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[    9.830182][  T203]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[    9.830185][  T203]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.830189][  T203]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[    9.830192][  T203]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[    9.830196][  T203]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[    9.830201][  T203]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[    9.830204][  T203]  ? copy_msghdr_from_user (net/socket.c:2650)
[    9.830206][  T203]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[    9.830208][  T203]  ? move_addr_to_kernel (net/socket.c:258)
[    9.830215][  T203]  ___sys_sendmsg (net/socket.c:2767)
[    9.830218][  T203]  ? copy_msghdr_from_user (net/socket.c:2619)
[    9.830233][  T203]  __sys_sendmsg (net/socket.c:2799)
[    9.830236][  T203]  ? __sys_sendmsg_sock (net/socket.c:2780)
[    9.830242][  T203]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.830246][  T203]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    9.830248][  T203]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[    9.830251][  T203]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.830253][  T203] RIP: 0033:0x7f7ba009654e
[    9.830257][  T203] Code: 4d 89 d8 e8 b4 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 <c9> 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 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[    9.830258][  T203] RSP: 002b:00007ffce65f4310 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[    9.830261][  T203] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f7ba009654e
[    9.830262][  T203] RDX: 0000000000000000 RSI: 00007ffce65f43c0 RDI: 0000000000000005
[    9.830263][  T203] RBP: 00007ffce65f4320 R08: 0000000000000000 R09: 0000000000000000
[    9.830264][  T203] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a915a8a
[    9.830265][  T203] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffce65f4a80
| [   15.453235][  T242] softirqs last disabled at (14262): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:109) bridge
| [   15.453243][  T242] Preemption disabled at:
| [   15.453244][  T242] 0x0
| [   15.453254][  T242] Tainted: [W]=WARN
[   15.453255][  T242] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.453256][  T242] Call Trace:
[   15.453258][  T242]  <TASK>
[   15.453259][  T242]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   15.453266][  T242]  __might_resched.cold (kernel/sched/core.c:9234)
[   15.453271][  T242]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   15.453275][  T242]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   15.453280][  T242]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   15.453282][  T242]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.453288][  T242]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   15.453291][  T242]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.453294][  T242]  put_chars (drivers/char/virtio_console.c:1176)
[   15.453297][  T242]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   15.453298][  T242]  ? check_prev_add (kernel/locking/lockdep.c:3185)
[   15.453302][  T242]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   15.453306][  T242]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   15.453308][  T242]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   15.453310][  T242]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.453311][  T242]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.453315][  T242]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   15.453317][  T242]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   15.453321][  T242]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.453325][  T242]  console_emit_next_record (kernel/printk/printk.c:3183)
[   15.453329][  T242]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   15.453330][  T242]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   15.453333][  T242]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.453337][  T242]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.453341][  T242]  console_flush_one_record (kernel/printk/printk.c:3268)
[   15.453345][  T242]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   15.453347][  T242]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.453352][  T242]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   15.453355][  T242]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   15.453357][  T242]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.453359][  T242]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   15.453363][  T242]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   15.453364][  T242]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   15.453368][  T242]  vprintk_emit (kernel/printk/printk.c:2479)
[   15.453371][  T242]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   15.453373][  T242]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   15.453376][  T242]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   15.453378][  T242]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.453382][  T242]  _printk (kernel/printk/printk.c:2504)
[   15.453386][  T242]  ? snapshot_read.cold (user.c:?)
[   15.453394][  T242] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   15.453405][  T242] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge
[   15.453414][  T242] br_device_event (net/bridge/br.c:111) bridge
[   15.453421][  T242]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   15.453425][  T242]  ? _sub_I_65535_1+0x4d0/0x4d0 stp
[   15.453431][  T242]  notifier_call_chain (kernel/notifier.c:85)
[   15.453437][  T242]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   15.453441][  T242]  ? netif_change_name (net/core/dev.c:1517)
[   15.453445][  T242]  ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1))
[   15.453448][  T242]  ? __kernel_text_address (kernel/extable.c:79)
[   15.453450][  T242]  ? write_profile (profile.c:?)
[   15.453453][  T242]  ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380)
[   15.453458][  T242]  netif_change_flags (net/core/dev.c:9882)
[   15.453461][  T242]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   15.453465][  T242]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   15.453467][  T242]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   15.453468][  T242]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   15.453470][  T242]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   15.453473][  T242]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   15.453476][  T242]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.453477][  T242]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   15.453480][  T242]  ? kasan_save_stack (mm/kasan/common.c:58)
[   15.453483][  T242]  ? kasan_save_stack (mm/kasan/common.c:57)
[   15.453485][  T242]  ? kasan_save_track (mm/kasan/common.c:78)
[   15.453487][  T242]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.453489][  T242]  ? netlink_seq_next (net/netlink/af_netlink.c:2685)
[   15.453492][  T242]  ? ___sys_sendmsg (net/socket.c:2757)
[   15.453496][  T242]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   15.453498][  T242]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   15.453501][  T242]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.453503][  T242]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.453505][  T242]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.453506][  T242]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.453509][  T242]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   15.453513][  T242]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   15.453514][  T242]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   15.453516][  T242]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   15.453520][  T242]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   15.453525][  T242]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   15.453530][  T242]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   15.453535][  T242]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   15.453537][  T242]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.453541][  T242]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   15.453543][  T242]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   15.453545][  T242]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   15.453547][  T242]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   15.453551][  T242]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   15.453553][  T242]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   15.453556][  T242]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   15.453557][  T242]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.453561][  T242]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   15.453563][  T242]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   15.453566][  T242]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   15.453568][  T242]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   15.453571][  T242]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   15.453577][  T242]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   15.453579][  T242]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   15.453583][  T242]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   15.453586][  T242]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   15.453589][  T242]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.453593][  T242]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   15.453597][  T242]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   15.453600][  T242]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[   15.453606][  T242]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   15.453608][  T242]  ? copy_msghdr_from_user (net/socket.c:2650)
[   15.453610][  T242]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   15.453612][  T242]  ? move_addr_to_kernel (net/socket.c:258)
[   15.453619][  T242]  ___sys_sendmsg (net/socket.c:2767)
[   15.453622][  T242]  ? copy_msghdr_from_user (net/socket.c:2619)
[   15.453637][  T242]  __sys_sendmsg (net/socket.c:2799)
[   15.453640][  T242]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   15.453646][  T242]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.453650][  T242]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   15.453652][  T242]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   15.453655][  T242]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   15.453657][  T242] RIP: 0033:0x7f189cefd54e
[   15.453660][  T242] Code: 4d 89 d8 e8 b4 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 <c9> 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 b4 bd 00 00       	call   0xbdbc
   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
[   15.453661][  T242] RSP: 002b:00007ffe89e31a00 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   15.453664][  T242] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f189cefd54e
[   15.453665][  T242] RDX: 0000000000000000 RSI: 00007ffe89e31ab0 RDI: 0000000000000005
[   15.453666][  T242] RBP: 00007ffe89e31a10 R08: 0000000000000000 R09: 0000000000000000
[   15.453667][  T242] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a915a8f


Finger prints:
br_device_event:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print
__alloc_skb:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars