======================================
| [   11.573280][  T245] softirqs last disabled at (28438): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   11.573283][  T245] Preemption disabled at:
| [   11.573283][  T245] vprintk_emit (kernel/printk/printk.c:2471)
| [   11.573292][  T245] Tainted: [W]=WARN
[   11.573293][  T245] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.573294][  T245] Call Trace:
[   11.573296][  T245]  <TASK>
[   11.573298][  T245]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   11.573304][  T245]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   11.573305][  T245]  __might_resched.cold (kernel/sched/core.c:9234)
[   11.573310][  T245]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   11.573314][  T245]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   11.573318][  T245]  __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))
[   11.573320][  T245]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.573327][  T245]  ? 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)
[   11.573329][  T245]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.573333][  T245]  put_chars (drivers/char/virtio_console.c:1176)
[   11.573336][  T245]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   11.573342][  T245]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   11.573349][  T245]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   11.573352][  T245]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.573357][  T245]  console_emit_next_record (kernel/printk/printk.c:3183)
[   11.573360][  T245]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   11.573362][  T245]  ? 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))
[   11.573365][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.573368][  T245]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.573372][  T245]  console_flush_one_record (kernel/printk/printk.c:3268)
[   11.573376][  T245]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   11.573378][  T245]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.573383][  T245]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   11.573386][  T245]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   11.573388][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.573389][  T245]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   11.573393][  T245]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   11.573395][  T245]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   11.573397][  T245]  vprintk_emit (kernel/printk/printk.c:2479)
[   11.573400][  T245]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   11.573403][  T245]  ? save_trace (kernel/locking/lockdep.c:589)
[   11.573407][  T245]  _printk (kernel/printk/printk.c:2504)
[   11.573410][  T245]  ? snapshot_read.cold (user.c:?)
[   11.573414][  T245]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   11.573416][  T245]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   11.573419][  T245]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   11.573422][  T245]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   11.573424][  T245]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   11.573427][  T245]  ? netdev_notice (net/core/dev.c:13194)
[   11.573430][  T245]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.573432][  T245]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.573435][  T245]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   11.573439][  T245]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   11.573441][  T245]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   11.573443][  T245]  ? register_netdev (net/core/dev.c:11618)
[   11.573444][  T245]  ? is_bpf_text_address (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) kernel/bpf/core.c:751 (discriminator 2))
[   11.573449][  T245]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   11.573452][  T245]  ? __kernel_text_address (kernel/extable.c:79)
[   11.573454][  T245]  ? write_profile (profile.c:?)
[   11.573458][  T245]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   11.573464][  T245]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   11.573467][  T245]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   11.573469][  T245]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   11.573471][  T245]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   11.573473][  T245]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   11.573477][  T245]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   11.573479][  T245]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   11.573481][  T245]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   11.573483][  T245]  ? kasan_save_stack (mm/kasan/common.c:58)
[   11.573485][  T245]  ? kasan_save_stack (mm/kasan/common.c:57)
[   11.573486][  T245]  ? kasan_save_track (mm/kasan/common.c:78)
[   11.573487][  T245]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   11.573489][  T245]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.573491][  T245]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   11.573494][  T245]  ? ___sys_sendmsg (net/socket.c:2758)
[   11.573498][  T245]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.573500][  T245]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   11.573502][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.573504][  T245]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.573506][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.573507][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.573508][  T245]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   11.573511][  T245]  ? __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)
[   11.573514][  T245]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   11.573515][  T245]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   11.573519][  T245]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   11.573520][  T245]  ? nla_get_range_signed (lib/nlattr.c:270)
[   11.573525][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.573527][  T245]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   11.573532][  T245]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   11.573537][  T245]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.573539][  T245]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.573544][  T245]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.573546][  T245]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.573548][  T245]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.573549][  T245]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.573553][  T245]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.573555][  T245]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   11.573558][  T245]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   11.573559][  T245]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.573564][  T245]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.573566][  T245]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.573569][  T245]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   11.573572][  T245]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   11.573575][  T245]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   11.573581][  T245]  ? 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))
[   11.573583][  T245]  ? 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))
[   11.573588][  T245]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   11.573592][  T245]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   11.573594][  T245]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.573598][  T245]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   11.573602][  T245]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   11.573606][  T245]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.573608][  T245]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   11.573613][  T245]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   11.573616][  T245]  ____sys_sendmsg (net/socket.c:2713)
[   11.573618][  T245]  ? copy_msghdr_from_user (net/socket.c:2650)
[   11.573620][  T245]  ? sock_write_iter (net/socket.c:1269)
[   11.573622][  T245]  ? move_addr_to_kernel (net/socket.c:258)
[   11.573629][  T245]  ___sys_sendmsg (net/socket.c:2767)
[   11.573632][  T245]  ? copy_msghdr_from_user (net/socket.c:2619)
[   11.573647][  T245]  __sys_sendmsg (net/socket.c:2799)
[   11.573650][  T245]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   11.573656][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.573659][  T245]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   11.573662][  T245]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   11.573665][  T245]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   11.573668][  T245] RIP: 0033:0x7efc6e15754e
[   11.573672][  T245] 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
[   11.573673][  T245] RSP: 002b:00007fff246c5380 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   11.573676][  T245] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007efc6e15754e
[   11.573677][  T245] RDX: 0000000000000000 RSI: 00007fff246c5430 RDI: 0000000000000005
[   11.573678][  T245] RBP: 00007fff246c5390 R08: 0000000000000000 R09: 0000000000000000
[   11.573679][  T245] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9186c4
[   11.573679][  T245] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fff246c5b00
| [   14.124768][  T292] softirqs last disabled at (46830): addrconf_ifdown.isra.0 (net/ipv6/addrconf.c:3946)
| [   14.124774][  T292] Preemption disabled at:
| [   14.124775][  T292] vprintk_emit (kernel/printk/printk.c:2471)
| [   14.124786][  T292] Tainted: [W]=WARN
[   14.124788][  T292] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.124790][  T292] Call Trace:
[   14.124792][  T292]  <TASK>
[   14.124794][  T292]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   14.124802][  T292]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   14.124805][  T292]  __might_resched.cold (kernel/sched/core.c:9234)
[   14.124811][  T292]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   14.124817][  T292]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   14.124823][  T292]  __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))
[   14.124827][  T292]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.124841][  T292]  ? 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)
[   14.124845][  T292]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.124851][  T292]  put_chars (drivers/char/virtio_console.c:1176)
[   14.124855][  T292]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   14.124857][  T292]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.124862][  T292]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.124871][  T292]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   14.124883][  T292]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   14.124887][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.124890][  T292]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.124897][  T292]  console_emit_next_record (kernel/printk/printk.c:3183)
[   14.124903][  T292]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   14.124906][  T292]  ? 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))
[   14.124911][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.124914][  T292]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.124921][  T292]  console_flush_one_record (kernel/printk/printk.c:3268)
[   14.124928][  T292]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   14.124931][  T292]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.124940][  T292]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   14.124945][  T292]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   14.124948][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.124951][  T292]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   14.124957][  T292]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   14.124960][  T292]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   14.124965][  T292]  vprintk_emit (kernel/printk/printk.c:2479)
[   14.124970][  T292]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   14.124973][  T292]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   14.124975][  T292]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   14.124981][  T292]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   14.124987][  T292]  _printk (kernel/printk/printk.c:2504)
[   14.124992][  T292]  ? snapshot_read.cold (user.c:?)
[   14.124998][  T292]  ? br_multicast_flood (??:?)
[   14.125002][  T292]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   14.125004][  T292]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   14.125006][  T292]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   14.125013][  T292]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   14.125020][  T292]  br_init_port (net/bridge/br_stp_if.c:39)
[   14.125024][  T292]  new_nbp (net/bridge/br_if.c:449)
[   14.125030][  T292]  br_add_if (net/bridge/br_if.c:592)
[   14.125033][  T292]  ? sync_rcu_exp_select_cpus (./include/linux/list.h:54 (discriminator 2))
[   14.125037][  T292]  ? __netdev_upper_dev_unlink (net/core/dev.c:9096)
[   14.125041][  T292]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   14.125047][  T292]  ? cycle_netdev (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 ./include/linux/netdevice.h:4084 drivers/net/vrf.c:998)
[   14.125053][  T292]  ? vrf_del_slave (drivers/net/vrf.c:1068 drivers/net/vrf.c:1075)
[   14.125056][  T292]  do_set_master (net/core/rtnetlink.c:3071)
[   14.125062][  T292]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   14.125067][  T292]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   14.125072][  T292]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   14.125075][  T292]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   14.125078][  T292]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   14.125083][  T292]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.125086][  T292]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.125089][  T292]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.125093][  T292]  ? kasan_save_stack (mm/kasan/common.c:58)
[   14.125096][  T292]  ? kasan_save_stack (mm/kasan/common.c:57)
[   14.125098][  T292]  ? kasan_save_track (mm/kasan/common.c:78)
[   14.125100][  T292]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   14.125104][  T292]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.125107][  T292]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   14.125110][  T292]  ? ___sys_sendmsg (net/socket.c:2758)
[   14.125117][  T292]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.125120][  T292]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   14.125124][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.125127][  T292]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.125129][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.125131][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.125134][  T292]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   14.125137][  T292]  ? __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)
[   14.125139][  T292]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   14.125143][  T292]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   14.125149][  T292]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   14.125151][  T292]  ? nla_get_range_signed (lib/nlattr.c:270)
[   14.125159][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.125163][  T292]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   14.125172][  T292]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   14.125182][  T292]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.125185][  T292]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.125192][  T292]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.125195][  T292]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.125199][  T292]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.125202][  T292]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   14.125208][  T292]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.125212][  T292]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   14.125217][  T292]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   14.125219][  T292]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.125227][  T292]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.125230][  T292]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.125236][  T292]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   14.125240][  T292]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   14.125245][  T292]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   14.125256][  T292]  ? 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))
[   14.125259][  T292]  ? 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))
[   14.125266][  T292]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   14.125273][  T292]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   14.125277][  T292]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.125284][  T292]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   14.125291][  T292]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   14.125297][  T292]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   14.125300][  T292]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   14.125308][  T292]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   14.125312][  T292]  ____sys_sendmsg (net/socket.c:2713)
[   14.125316][  T292]  ? copy_msghdr_from_user (net/socket.c:2650)
[   14.125319][  T292]  ? sock_write_iter (net/socket.c:1269)
[   14.125322][  T292]  ? move_addr_to_kernel (net/socket.c:258)
[   14.125334][  T292]  ___sys_sendmsg (net/socket.c:2767)
[   14.125339][  T292]  ? copy_msghdr_from_user (net/socket.c:2619)
[   14.125366][  T292]  __sys_sendmsg (net/socket.c:2799)
[   14.125371][  T292]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   14.125382][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.125388][  T292]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   14.125391][  T292]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   14.125396][  T292]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   14.125399][  T292] RIP: 0033:0x7f21a4a3654e
[   14.125404][  T292] 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
[   14.125407][  T292] RSP: 002b:00007fffc0b7c230 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   14.125411][  T292] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f21a4a3654e
[   14.125413][  T292] RDX: 0000000000000000 RSI: 00007fffc0b7c2e0 RDI: 0000000000000005
[   14.125414][  T292] RBP: 00007fffc0b7c240 R08: 0000000000000000 R09: 0000000000000000
[   14.125416][  T292] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9186c7
[   14.125417][  T292] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fffc0b7c9a0
| [   21.228327][  T339] softirqs last disabled at (42766): br_stp_disable_bridge (./include/linux/spinlock.h:353 net/bridge/br_stp_if.c:73)
| [   21.228329][  T339] Preemption disabled at:
| [   21.228330][  T339] 0x0
| [   21.228340][  T339] Tainted: [W]=WARN
[   21.228341][  T339] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   21.228343][  T339] Call Trace:
[   21.228344][  T339]  <TASK>
[   21.228346][  T339]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   21.228353][  T339]  __might_resched.cold (kernel/sched/core.c:9234)
[   21.228358][  T339]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   21.228362][  T339]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   21.228367][  T339]  __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))
[   21.228369][  T339]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.228375][  T339]  ? 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)
[   21.228378][  T339]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.228382][  T339]  put_chars (drivers/char/virtio_console.c:1176)
[   21.228383][  T339]  ? prb_final_commit (kernel/printk/printk_ringbuffer.c:1842)
[   21.228386][  T339]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   21.228389][  T339]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   21.228392][  T339]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.228395][  T339]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   21.228399][  T339]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   21.228404][  T339]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   21.228406][  T339]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.228407][  T339]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.228411][  T339]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   21.228414][  T339]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   21.228417][  T339]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.228419][  T339]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.228424][  T339]  console_emit_next_record (kernel/printk/printk.c:3183)
[   21.228428][  T339]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   21.228430][  T339]  ? 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))
[   21.228433][  T339]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.228435][  T339]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.228439][  T339]  console_flush_one_record (kernel/printk/printk.c:3268)
[   21.228443][  T339]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   21.228445][  T339]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.228450][  T339]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   21.228453][  T339]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   21.228455][  T339]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.228457][  T339]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   21.228461][  T339]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   21.228462][  T339]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   21.228465][  T339]  vprintk_emit (kernel/printk/printk.c:2479)
[   21.228468][  T339]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   21.228471][  T339]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   21.228473][  T339]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.228476][  T339]  _printk (kernel/printk/printk.c:2504)
[   21.228480][  T339]  ? snapshot_read.cold (user.c:?)
[   21.228488][  T339]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   21.228492][  T339]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   21.228496][  T339]  br_stp_disable_bridge (net/bridge/br_stp_if.c:76)
[   21.228498][  T339]  br_dev_stop (net/bridge/br_device.c:193)
[   21.228501][  T339]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   21.228504][  T339]  __dev_close_many (net/core/dev.c:1798)
[   21.228509][  T339]  ? netif_open (net/core/dev.c:1755)
[   21.228511][  T339]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   21.228513][  T339]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   21.228518][  T339]  __dev_change_flags (net/core/dev.c:1811 net/core/dev.c:9810)
[   21.228521][  T339]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   21.228525][  T339]  ? synchronize_rcu_normal (kernel/rcu/tree.c:3360)
[   21.228529][  T339]  netif_change_flags (net/core/dev.c:9877)
[   21.228533][  T339]  dev_change_flags (net/core/dev_api.c:68)
[   21.228535][  T339]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   21.228539][  T339]  cycle_netdev (drivers/net/vrf.c:1001)
[   21.228544][  T339]  vrf_del_slave (drivers/net/vrf.c:1068 drivers/net/vrf.c:1075)
[   21.228546][  T339]  do_set_master (net/core/rtnetlink.c:3055)
[   21.228550][  T339]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   21.228554][  T339]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   21.228557][  T339]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   21.228559][  T339]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   21.228561][  T339]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   21.228564][  T339]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   21.228566][  T339]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.228568][  T339]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   21.228570][  T339]  ? kasan_save_stack (mm/kasan/common.c:58)
[   21.228573][  T339]  ? kasan_save_stack (mm/kasan/common.c:57)
[   21.228574][  T339]  ? kasan_save_track (mm/kasan/common.c:78)
[   21.228575][  T339]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   21.228578][  T339]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.228580][  T339]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   21.228582][  T339]  ? ___sys_sendmsg (net/socket.c:2758)
[   21.228586][  T339]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.228588][  T339]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   21.228591][  T339]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.228593][  T339]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.228594][  T339]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.228596][  T339]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.228597][  T339]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   21.228600][  T339]  ? __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)
[   21.228603][  T339]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   21.228604][  T339]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   21.228608][  T339]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   21.228609][  T339]  ? nla_get_range_signed (lib/nlattr.c:270)
[   21.228614][  T339]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.228616][  T339]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   21.228622][  T339]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   21.228627][  T339]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   21.228629][  T339]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.228634][  T339]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.228636][  T339]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   21.228638][  T339]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   21.228640][  T339]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   21.228644][  T339]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   21.228646][  T339]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   21.228649][  T339]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   21.228650][  T339]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.228655][  T339]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.228657][  T339]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   21.228661][  T339]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   21.228663][  T339]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   21.228666][  T339]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   21.228673][  T339]  ? 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))
[   21.228675][  T339]  ? 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))
[   21.228680][  T339]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   21.228684][  T339]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   21.228686][  T339]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   21.228691][  T339]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   21.228695][  T339]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   21.228699][  T339]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   21.228700][  T339]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   21.228706][  T339]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   21.228709][  T339]  ____sys_sendmsg (net/socket.c:2713)
[   21.228711][  T339]  ? copy_msghdr_from_user (net/socket.c:2650)
[   21.228713][  T339]  ? sock_write_iter (net/socket.c:1269)
[   21.228715][  T339]  ? move_addr_to_kernel (net/socket.c:258)
[   21.228723][  T339]  ___sys_sendmsg (net/socket.c:2767)
[   21.228726][  T339]  ? copy_msghdr_from_user (net/socket.c:2619)
[   21.228742][  T339]  __sys_sendmsg (net/socket.c:2799)
[   21.228745][  T339]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   21.228751][  T339]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.228754][  T339]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   21.228757][  T339]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   21.228760][  T339]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   21.228762][  T339] RIP: 0033:0x7fe8dead454e
[   21.228765][  T339] 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
[   21.228767][  T339] RSP: 002b:00007ffcd727f720 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   21.228772][  T339] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fe8dead454e
[   21.228774][  T339] RDX: 0000000000000000 RSI: 00007ffcd727f7d0 RDI: 0000000000000005
[   21.228775][  T339] RBP: 00007ffcd727f730 R08: 0000000000000000 R09: 0000000000000000
[   21.228776][  T339] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9186ce
[   21.228777][  T339] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffcd727fe90
| [   24.173701][  T397] softirqs last disabled at (34066): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   24.173703][  T397] Preemption disabled at:
| [   24.173704][  T397] vprintk_emit (kernel/printk/printk.c:2471)
| [   24.173712][  T397] Tainted: [W]=WARN
[   24.173713][  T397] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   24.173715][  T397] Call Trace:
[   24.173717][  T397]  <TASK>
[   24.173718][  T397]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   24.173724][  T397]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   24.173726][  T397]  __might_resched.cold (kernel/sched/core.c:9234)
[   24.173730][  T397]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   24.173734][  T397]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   24.173739][  T397]  __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))
[   24.173741][  T397]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.173747][  T397]  ? 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)
[   24.173750][  T397]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.173754][  T397]  put_chars (drivers/char/virtio_console.c:1176)
[   24.173756][  T397]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   24.173762][  T397]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   24.173774][  T397]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   24.173777][  T397]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.173782][  T397]  console_emit_next_record (kernel/printk/printk.c:3183)
[   24.173786][  T397]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   24.173788][  T397]  ? 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))
[   24.173791][  T397]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.173794][  T397]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.173798][  T397]  console_flush_one_record (kernel/printk/printk.c:3268)
[   24.173802][  T397]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   24.173804][  T397]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.173809][  T397]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   24.173812][  T397]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   24.173814][  T397]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.173816][  T397]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   24.173819][  T397]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   24.173821][  T397]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   24.173824][  T397]  vprintk_emit (kernel/printk/printk.c:2479)
[   24.173827][  T397]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   24.173828][  T397]  ? netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   24.173831][  T397]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   24.173833][  T397]  ? __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   24.173836][  T397]  ? ____sys_sendmsg (net/socket.c:2713)
[   24.173837][  T397]  ? ___sys_sendmsg (net/socket.c:2767)
[   24.173839][  T397]  ? __sys_sendmsg (net/socket.c:2799)
[   24.173840][  T397]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   24.173846][  T397]  _printk (kernel/printk/printk.c:2504)
[   24.173850][  T397]  ? snapshot_read.cold (user.c:?)
[   24.173857][  T397]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   24.173861][  T397]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   24.173865][  T397]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   24.173868][  T397]  ? netdev_notice (net/core/dev.c:13194)
[   24.173878][  T397]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.173880][  T397]  ? __up_read (kernel/locking/rwsem.c:1397 (discriminator 1))
[   24.173883][  T397]  ? down_write_nested (kernel/locking/rwsem.c:1759)
[   24.173885][  T397]  ? mutex_is_locked (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.h:48 kernel/locking/mutex.c:65)
[   24.173887][  T397]  netif_set_allmulti.cold (net/core/dev.c:9731 (discriminator 3))
[   24.173891][  T397]  dev_set_allmulti (net/core/dev_api.c:315)
[   24.173895][  T397]  del_nbp (net/bridge/br_if.c:253 net/bridge/br_if.c:341)
[   24.173899][  T397]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   24.173904][  T397]  br_dev_delete (net/bridge/br_if.c:387)
[   24.173908][  T397]  rtnl_dellink (net/core/rtnetlink.c:3651 net/core/rtnetlink.c:3694)
[   24.173909][  T397]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   24.173911][  T397]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.173913][  T397]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.173915][  T397]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   24.173937][  T397]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   24.173939][  T397]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.173942][  T397]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.173944][  T397]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   24.173946][  T397]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.173951][  T397]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   24.173952][  T397]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.173954][  T397]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   24.173956][  T397]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.173960][  T397]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   24.173962][  T397]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   24.173965][  T397]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   24.173967][  T397]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.173971][  T397]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   24.173973][  T397]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.173977][  T397]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   24.173979][  T397]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   24.173981][  T397]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   24.173988][  T397]  ? 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))
[   24.173990][  T397]  ? 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))
[   24.173994][  T397]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   24.173998][  T397]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   24.174001][  T397]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.174005][  T397]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   24.174009][  T397]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   24.174013][  T397]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.174015][  T397]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   24.174020][  T397]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   24.174023][  T397]  ____sys_sendmsg (net/socket.c:2713)
[   24.174025][  T397]  ? copy_msghdr_from_user (net/socket.c:2650)
[   24.174027][  T397]  ? sock_write_iter (net/socket.c:1269)
[   24.174029][  T397]  ? move_addr_to_kernel (net/socket.c:258)
[   24.174036][  T397]  ___sys_sendmsg (net/socket.c:2767)
[   24.174039][  T397]  ? copy_msghdr_from_user (net/socket.c:2619)
[   24.174055][  T397]  __sys_sendmsg (net/socket.c:2799)
[   24.174058][  T397]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   24.174064][  T397]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.174067][  T397]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   24.174069][  T397]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   24.174072][  T397]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   24.174074][  T397] RIP: 0033:0x7f9784da154e
[   24.174078][  T397] 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
[   24.174080][  T397] RSP: 002b:00007fff77e81160 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   24.174082][  T397] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f9784da154e
[   24.174084][  T397] RDX: 0000000000000000 RSI: 00007fff77e81210 RDI: 0000000000000005
[   24.174084][  T397] RBP: 00007fff77e81170 R08: 0000000000000000 R09: 0000000000000000
[   24.174085][  T397] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9186d1
[   24.174086][  T397] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fff77e818d0
| [   27.323506][  T487] softirqs last disabled at (28738): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   27.323509][  T487] Preemption disabled at:
| [   27.323509][  T487] vprintk_emit (kernel/printk/printk.c:2471)
| [   27.323518][  T487] Tainted: [W]=WARN
[   27.323519][  T487] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   27.323521][  T487] Call Trace:
[   27.323523][  T487]  <TASK>
[   27.323524][  T487]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   27.323531][  T487]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   27.323532][  T487]  __might_resched.cold (kernel/sched/core.c:9234)
[   27.323537][  T487]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   27.323541][  T487]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   27.323546][  T487]  __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))
[   27.323548][  T487]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.323554][  T487]  ? 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)
[   27.323557][  T487]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.323561][  T487]  put_chars (drivers/char/virtio_console.c:1176)
[   27.323563][  T487]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   27.323570][  T487]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   27.323578][  T487]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   27.323581][  T487]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.323586][  T487]  console_emit_next_record (kernel/printk/printk.c:3183)
[   27.323590][  T487]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   27.323592][  T487]  ? 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))
[   27.323595][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.323598][  T487]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.323602][  T487]  console_flush_one_record (kernel/printk/printk.c:3268)
[   27.323607][  T487]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   27.323608][  T487]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.323614][  T487]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   27.323617][  T487]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   27.323619][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.323621][  T487]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   27.323625][  T487]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   27.323627][  T487]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   27.323629][  T487]  vprintk_emit (kernel/printk/printk.c:2479)
[   27.323633][  T487]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   27.323635][  T487]  ? _mutex_trylock_nest_lock (kernel/locking/mutex.c:1227 (discriminator 6))
[   27.323641][  T487]  _printk (kernel/printk/printk.c:2504)
[   27.323645][  T487]  ? snapshot_read.cold (user.c:?)
[   27.323646][  T487]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   27.323649][  T487]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   27.323652][  T487]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   27.323654][  T487]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   27.323658][  T487]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   27.323661][  T487]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   27.323663][  T487]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   27.323666][  T487]  ? netdev_notice (net/core/dev.c:13194)
[   27.323669][  T487]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   27.323672][  T487]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.323675][  T487]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   27.323678][  T487]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   27.323681][  T487]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   27.323683][  T487]  ? register_netdev (net/core/dev.c:11618)
[   27.323684][  T487]  ? is_bpf_text_address (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) kernel/bpf/core.c:751 (discriminator 2))
[   27.323690][  T487]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   27.323692][  T487]  ? __kernel_text_address (kernel/extable.c:79)
[   27.323695][  T487]  ? write_profile (profile.c:?)
[   27.323699][  T487]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   27.323705][  T487]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   27.323708][  T487]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   27.323711][  T487]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   27.323712][  T487]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   27.323714][  T487]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   27.323717][  T487]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   27.323719][  T487]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   27.323721][  T487]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   27.323724][  T487]  ? kasan_save_stack (mm/kasan/common.c:58)
[   27.323726][  T487]  ? kasan_save_stack (mm/kasan/common.c:57)
[   27.323727][  T487]  ? kasan_save_track (mm/kasan/common.c:78)
[   27.323728][  T487]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   27.323731][  T487]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.323733][  T487]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   27.323736][  T487]  ? ___sys_sendmsg (net/socket.c:2758)
[   27.323740][  T487]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.323742][  T487]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   27.323745][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.323746][  T487]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.323748][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.323749][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.323751][  T487]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   27.323753][  T487]  ? __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)
[   27.323755][  T487]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   27.323757][  T487]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   27.323760][  T487]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   27.323761][  T487]  ? nla_get_range_signed (lib/nlattr.c:270)
[   27.323767][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.323769][  T487]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   27.323777][  T487]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   27.323782][  T487]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   27.323784][  T487]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.323789][  T487]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.323791][  T487]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   27.323793][  T487]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   27.323795][  T487]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.323799][  T487]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   27.323801][  T487]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   27.323804][  T487]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   27.323806][  T487]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.323810][  T487]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.323812][  T487]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   27.323816][  T487]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   27.323820][  T487]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   27.323823][  T487]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   27.323829][  T487]  ? 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))
[   27.323831][  T487]  ? 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))
[   27.323836][  T487]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   27.323840][  T487]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   27.323843][  T487]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   27.323847][  T487]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   27.323851][  T487]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   27.323855][  T487]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.323857][  T487]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   27.323862][  T487]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   27.323865][  T487]  ____sys_sendmsg (net/socket.c:2713)
[   27.323868][  T487]  ? copy_msghdr_from_user (net/socket.c:2650)
[   27.323870][  T487]  ? sock_write_iter (net/socket.c:1269)
[   27.323872][  T487]  ? move_addr_to_kernel (net/socket.c:258)
[   27.323879][  T487]  ___sys_sendmsg (net/socket.c:2767)
[   27.323885][  T487]  ? copy_msghdr_from_user (net/socket.c:2619)
[   27.323902][  T487]  __sys_sendmsg (net/socket.c:2799)
[   27.323905][  T487]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   27.323911][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.323915][  T487]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   27.323918][  T487]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   27.323921][  T487]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   27.323923][  T487] RIP: 0033:0x7fdf16cdc54e
[   27.323927][  T487] 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
[   27.323929][  T487] RSP: 002b:00007ffe78ee33b0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   27.323931][  T487] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fdf16cdc54e
[   27.323933][  T487] RDX: 0000000000000000 RSI: 00007ffe78ee3460 RDI: 0000000000000005
[   27.323934][  T487] RBP: 00007ffe78ee33c0 R08: 0000000000000000 R09: 0000000000000000
[   27.323935][  T487] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9186d4
[   27.323936][  T487] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe78ee3b30
| [   36.325394][  T677] softirqs last disabled at (17540): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   36.325397][  T677] Preemption disabled at:
| [   36.325398][  T677] vprintk_emit (kernel/printk/printk.c:2471)
| [   36.325406][  T677] Tainted: [W]=WARN
[   36.325407][  T677] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   36.325408][  T677] Call Trace:
[   36.325410][  T677]  <TASK>
[   36.325411][  T677]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   36.325418][  T677]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   36.325419][  T677]  __might_resched.cold (kernel/sched/core.c:9234)
[   36.325424][  T677]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   36.325428][  T677]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   36.325432][  T677]  __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))
[   36.325434][  T677]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   36.325441][  T677]  ? 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)
[   36.325444][  T677]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   36.325447][  T677]  put_chars (drivers/char/virtio_console.c:1176)
[   36.325450][  T677]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   36.325456][  T677]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   36.325464][  T677]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   36.325467][  T677]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   36.325471][  T677]  console_emit_next_record (kernel/printk/printk.c:3183)
[   36.325475][  T677]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   36.325477][  T677]  ? 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))
[   36.325480][  T677]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   36.325483][  T677]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   36.325487][  T677]  console_flush_one_record (kernel/printk/printk.c:3268)
[   36.325491][  T677]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   36.325493][  T677]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   36.325498][  T677]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   36.325501][  T677]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   36.325502][  T677]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   36.325504][  T677]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   36.325508][  T677]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   36.325509][  T677]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   36.325512][  T677]  vprintk_emit (kernel/printk/printk.c:2479)
[   36.325515][  T677]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   36.325518][  T677]  ? _mutex_trylock_nest_lock (kernel/locking/mutex.c:1227 (discriminator 6))
[   36.325523][  T677]  _printk (kernel/printk/printk.c:2504)
[   36.325527][  T677]  ? snapshot_read.cold (user.c:?)
[   36.325528][  T677]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   36.325531][  T677]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   36.325534][  T677]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   36.325536][  T677]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   36.325540][  T677]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   36.325543][  T677]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   36.325545][  T677]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   36.325548][  T677]  ? netdev_notice (net/core/dev.c:13194)
[   36.325550][  T677]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   36.325553][  T677]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   36.325556][  T677]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   36.325559][  T677]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   36.325561][  T677]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   36.325563][  T677]  ? register_netdev (net/core/dev.c:11618)
[   36.325565][  T677]  ? is_bpf_text_address (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) kernel/bpf/core.c:751 (discriminator 2))
[   36.325570][  T677]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   36.325573][  T677]  ? __kernel_text_address (kernel/extable.c:79)
[   36.325575][  T677]  ? write_profile (profile.c:?)
[   36.325579][  T677]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   36.325585][  T677]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   36.325588][  T677]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   36.325590][  T677]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   36.325592][  T677]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   36.325594][  T677]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   36.325597][  T677]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   36.325599][  T677]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   36.325601][  T677]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   36.325603][  T677]  ? kasan_save_stack (mm/kasan/common.c:58)
[   36.325605][  T677]  ? kasan_save_stack (mm/kasan/common.c:57)
[   36.325606][  T677]  ? kasan_save_track (mm/kasan/common.c:78)
[   36.325608][  T677]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   36.325610][  T677]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   36.325612][  T677]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   36.325615][  T677]  ? ___sys_sendmsg (net/socket.c:2758)
[   36.325619][  T677]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   36.325621][  T677]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   36.325623][  T677]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   36.325625][  T677]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   36.325627][  T677]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   36.325628][  T677]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   36.325629][  T677]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   36.325632][  T677]  ? __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)
[   36.325633][  T677]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   36.325635][  T677]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   36.325639][  T677]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   36.325640][  T677]  ? nla_get_range_signed (lib/nlattr.c:270)
[   36.325645][  T677]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   36.325647][  T677]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   36.325652][  T677]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   36.325657][  T677]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   36.325659][  T677]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   36.325664][  T677]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   36.325666][  T677]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   36.325667][  T677]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   36.325669][  T677]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   36.325673][  T677]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   36.325675][  T677]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   36.325678][  T677]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   36.325679][  T677]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   36.325684][  T677]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   36.325686][  T677]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   36.325689][  T677]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   36.325692][  T677]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   36.325695][  T677]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   36.325701][  T677]  ? 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))
[   36.325703][  T677]  ? 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))
[   36.325708][  T677]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   36.325712][  T677]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   36.325714][  T677]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   36.325719][  T677]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   36.325723][  T677]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   36.325726][  T677]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   36.325728][  T677]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   36.325733][  T677]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   36.325736][  T677]  ____sys_sendmsg (net/socket.c:2713)
[   36.325738][  T677]  ? copy_msghdr_from_user (net/socket.c:2650)
[   36.325741][  T677]  ? sock_write_iter (net/socket.c:1269)
[   36.325742][  T677]  ? move_addr_to_kernel (net/socket.c:258)
[   36.325749][  T677]  ___sys_sendmsg (net/socket.c:2767)
[   36.325752][  T677]  ? copy_msghdr_from_user (net/socket.c:2619)
[   36.325768][  T677]  __sys_sendmsg (net/socket.c:2799)
[   36.325774][  T677]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   36.325780][  T677]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   36.325783][  T677]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   36.325786][  T677]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   36.325789][  T677]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   36.325791][  T677] RIP: 0033:0x7f6f8886054e
[   36.325795][  T677] 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
[   36.325797][  T677] RSP: 002b:00007ffdc1a4ac70 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   36.325799][  T677] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f6f8886054e
[   36.325801][  T677] RDX: 0000000000000000 RSI: 00007ffdc1a4ad20 RDI: 0000000000000005
[   36.325802][  T677] RBP: 00007ffdc1a4ac80 R08: 0000000000000000 R09: 0000000000000000
[   36.325803][  T677] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9186dd


Finger prints:
__alloc_skb:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars
vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print
br_stp_disable_bridge:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print
netif_change_name:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars