======================================
| [   12.181177][  T245] softirqs last disabled at (20398): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   12.181179][  T245] Preemption disabled at:
| [   12.181180][  T245] vprintk_emit (kernel/printk/printk.c:2471)
| [   12.181189][  T245] Tainted: [W]=WARN
[   12.181190][  T245] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.181191][  T245] Call Trace:
[   12.181193][  T245]  <TASK>
[   12.181194][  T245]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.181200][  T245]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   12.181202][  T245]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.181206][  T245]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.181211][  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)
[   12.181215][  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))
[   12.181217][  T245]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.181224][  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)
[   12.181227][  T245]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.181230][  T245]  put_chars (drivers/char/virtio_console.c:1176)
[   12.181233][  T245]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.181239][  T245]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.181251][  T245]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.181254][  T245]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.181259][  T245]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.181262][  T245]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.181264][  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))
[   12.181267][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.181270][  T245]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.181274][  T245]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.181278][  T245]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.181280][  T245]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.181286][  T245]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.181288][  T245]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.181290][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.181292][  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)
[   12.181296][  T245]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.181297][  T245]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.181300][  T245]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.181303][  T245]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.181305][  T245]  ? save_trace (kernel/locking/lockdep.c:589)
[   12.181309][  T245]  _printk (kernel/printk/printk.c:2504)
[   12.181313][  T245]  ? snapshot_read.cold (user.c:?)
[   12.181316][  T245]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   12.181318][  T245]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   12.181322][  T245]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   12.181325][  T245]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   12.181327][  T245]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   12.181330][  T245]  ? netdev_notice (net/core/dev.c:13194)
[   12.181333][  T245]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.181336][  T245]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.181338][  T245]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   12.181341][  T245]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   12.181344][  T245]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   12.181345][  T245]  ? register_netdev (net/core/dev.c:11618)
[   12.181347][  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))
[   12.181352][  T245]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   12.181355][  T245]  ? __kernel_text_address (kernel/extable.c:79)
[   12.181357][  T245]  ? write_profile (profile.c:?)
[   12.181361][  T245]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   12.181367][  T245]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   12.181370][  T245]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   12.181372][  T245]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   12.181373][  T245]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   12.181376][  T245]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   12.181379][  T245]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.181381][  T245]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.181383][  T245]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.181386][  T245]  ? kasan_save_stack (mm/kasan/common.c:58)
[   12.181387][  T245]  ? kasan_save_stack (mm/kasan/common.c:57)
[   12.181389][  T245]  ? kasan_save_track (mm/kasan/common.c:78)
[   12.181390][  T245]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   12.181392][  T245]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.181394][  T245]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   12.181397][  T245]  ? ___sys_sendmsg (net/socket.c:2758)
[   12.181401][  T245]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.181403][  T245]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.181406][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.181407][  T245]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.181409][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.181410][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.181412][  T245]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   12.181414][  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)
[   12.181417][  T245]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   12.181419][  T245]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.181422][  T245]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   12.181423][  T245]  ? nla_get_range_signed (lib/nlattr.c:270)
[   12.181428][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.181431][  T245]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   12.181436][  T245]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   12.181441][  T245]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.181443][  T245]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.181447][  T245]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.181449][  T245]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.181451][  T245]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.181453][  T245]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.181457][  T245]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.181459][  T245]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   12.181462][  T245]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.181463][  T245]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.181468][  T245]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.181470][  T245]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.181473][  T245]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   12.181476][  T245]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.181479][  T245]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   12.181485][  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))
[   12.181488][  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))
[   12.181492][  T245]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   12.181496][  T245]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   12.181498][  T245]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.181503][  T245]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   12.181507][  T245]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   12.181510][  T245]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.181512][  T245]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   12.181517][  T245]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   12.181520][  T245]  ____sys_sendmsg (net/socket.c:2713)
[   12.181522][  T245]  ? copy_msghdr_from_user (net/socket.c:2650)
[   12.181525][  T245]  ? sock_write_iter (net/socket.c:1269)
[   12.181526][  T245]  ? move_addr_to_kernel (net/socket.c:258)
[   12.181534][  T245]  ___sys_sendmsg (net/socket.c:2767)
[   12.181536][  T245]  ? copy_msghdr_from_user (net/socket.c:2619)
[   12.181552][  T245]  __sys_sendmsg (net/socket.c:2799)
[   12.181555][  T245]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   12.181561][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.181564][  T245]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.181567][  T245]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.181570][  T245]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.181572][  T245] RIP: 0033:0x7f9c8b8ed54e
[   12.181576][  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
[   12.181578][  T245] RSP: 002b:00007ffefd712670 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   12.181580][  T245] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f9c8b8ed54e
[   12.181582][  T245] RDX: 0000000000000000 RSI: 00007ffefd712720 RDI: 0000000000000005
[   12.181583][  T245] RBP: 00007ffefd712680 R08: 0000000000000000 R09: 0000000000000000
[   12.181583][  T245] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9108b9
[   12.181584][  T245] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffefd712df0
| [   14.681152][  T293] softirqs last disabled at (32970): addrconf_ifdown.isra.0 (net/ipv6/addrconf.c:3946)
| [   14.681154][  T293] Preemption disabled at:
| [   14.681155][  T293] vprintk_emit (kernel/printk/printk.c:2471)
| [   14.681163][  T293] Tainted: [W]=WARN
[   14.681164][  T293] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.681166][  T293] Call Trace:
[   14.681167][  T293]  <TASK>
[   14.681169][  T293]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   14.681175][  T293]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   14.681176][  T293]  __might_resched.cold (kernel/sched/core.c:9234)
[   14.681181][  T293]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   14.681185][  T293]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   14.681189][  T293]  __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))
[   14.681191][  T293]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.681198][  T293]  ? 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)
[   14.681201][  T293]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.681204][  T293]  put_chars (drivers/char/virtio_console.c:1176)
[   14.681207][  T293]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   14.681208][  T293]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.681212][  T293]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.681217][  T293]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   14.681225][  T293]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   14.681228][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.681230][  T293]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.681234][  T293]  console_emit_next_record (kernel/printk/printk.c:3183)
[   14.681238][  T293]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   14.681240][  T293]  ? 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))
[   14.681243][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.681247][  T293]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.681251][  T293]  console_flush_one_record (kernel/printk/printk.c:3268)
[   14.681255][  T293]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   14.681257][  T293]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.681263][  T293]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   14.681266][  T293]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   14.681268][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.681269][  T293]  ? 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)
[   14.681273][  T293]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   14.681275][  T293]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   14.681278][  T293]  vprintk_emit (kernel/printk/printk.c:2479)
[   14.681281][  T293]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   14.681283][  T293]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   14.681284][  T293]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   14.681289][  T293]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   14.681292][  T293]  _printk (kernel/printk/printk.c:2504)
[   14.681296][  T293]  ? snapshot_read.cold (user.c:?)
[   14.681299][  T293]  ? br_multicast_flood (??:?)
[   14.681302][  T293]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   14.681304][  T293]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   14.681305][  T293]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   14.681309][  T293]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   14.681314][  T293]  br_init_port (net/bridge/br_stp_if.c:39)
[   14.681316][  T293]  new_nbp (net/bridge/br_if.c:449)
[   14.681320][  T293]  br_add_if (net/bridge/br_if.c:592)
[   14.681322][  T293]  ? sync_rcu_exp_select_cpus (./include/linux/list.h:54 (discriminator 2))
[   14.681324][  T293]  ? __netdev_upper_dev_unlink (net/core/dev.c:9096)
[   14.681328][  T293]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   14.681331][  T293]  ? 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)
[   14.681336][  T293]  ? vrf_del_slave (drivers/net/vrf.c:1068 drivers/net/vrf.c:1075)
[   14.681338][  T293]  do_set_master (net/core/rtnetlink.c:3071)
[   14.681341][  T293]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   14.681344][  T293]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   14.681348][  T293]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   14.681349][  T293]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   14.681352][  T293]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   14.681355][  T293]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.681357][  T293]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.681359][  T293]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.681361][  T293]  ? kasan_save_stack (mm/kasan/common.c:58)
[   14.681364][  T293]  ? kasan_save_stack (mm/kasan/common.c:57)
[   14.681365][  T293]  ? kasan_save_track (mm/kasan/common.c:78)
[   14.681366][  T293]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   14.681368][  T293]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.681370][  T293]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   14.681373][  T293]  ? ___sys_sendmsg (net/socket.c:2758)
[   14.681377][  T293]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.681379][  T293]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   14.681382][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.681383][  T293]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.681385][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.681386][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.681388][  T293]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   14.681390][  T293]  ? __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)
[   14.681391][  T293]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   14.681393][  T293]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   14.681397][  T293]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   14.681398][  T293]  ? nla_get_range_signed (lib/nlattr.c:270)
[   14.681403][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.681405][  T293]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   14.681410][  T293]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   14.681416][  T293]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.681418][  T293]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.681422][  T293]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.681424][  T293]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.681426][  T293]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.681428][  T293]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   14.681432][  T293]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.681434][  T293]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   14.681437][  T293]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   14.681438][  T293]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.681443][  T293]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.681445][  T293]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.681448][  T293]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   14.681451][  T293]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   14.681454][  T293]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   14.681461][  T293]  ? 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))
[   14.681463][  T293]  ? 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))
[   14.681467][  T293]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   14.681471][  T293]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   14.681474][  T293]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.681478][  T293]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   14.681482][  T293]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   14.681486][  T293]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   14.681488][  T293]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   14.681494][  T293]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   14.681496][  T293]  ____sys_sendmsg (net/socket.c:2713)
[   14.681499][  T293]  ? copy_msghdr_from_user (net/socket.c:2650)
[   14.681501][  T293]  ? sock_write_iter (net/socket.c:1269)
[   14.681502][  T293]  ? move_addr_to_kernel (net/socket.c:258)
[   14.681510][  T293]  ___sys_sendmsg (net/socket.c:2767)
[   14.681513][  T293]  ? copy_msghdr_from_user (net/socket.c:2619)
[   14.681529][  T293]  __sys_sendmsg (net/socket.c:2799)
[   14.681532][  T293]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   14.681538][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.681541][  T293]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   14.681544][  T293]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   14.681547][  T293]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   14.681550][  T293] RIP: 0033:0x7fabff30854e
[   14.681554][  T293] 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
[   14.681555][  T293] RSP: 002b:00007ffdd1295160 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   14.681558][  T293] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fabff30854e
[   14.681559][  T293] RDX: 0000000000000000 RSI: 00007ffdd1295210 RDI: 0000000000000005
[   14.681560][  T293] RBP: 00007ffdd1295170 R08: 0000000000000000 R09: 0000000000000000
[   14.681561][  T293] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9108bb
[   14.681562][  T293] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffdd12958d0
| [   21.619603][  T341] softirqs last disabled at (39100): br_stp_disable_bridge (./include/linux/spinlock.h:353 net/bridge/br_stp_if.c:73)
| [   21.619605][  T341] Preemption disabled at:
| [   21.619606][  T341] 0x0
| [   21.619616][  T341] Tainted: [W]=WARN
[   21.619617][  T341] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   21.619619][  T341] Call Trace:
[   21.619621][  T341]  <TASK>
[   21.619622][  T341]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   21.619629][  T341]  __might_resched.cold (kernel/sched/core.c:9234)
[   21.619633][  T341]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   21.619638][  T341]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   21.619642][  T341]  __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))
[   21.619644][  T341]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.619651][  T341]  ? 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)
[   21.619654][  T341]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.619657][  T341]  put_chars (drivers/char/virtio_console.c:1176)
[   21.619659][  T341]  ? prb_final_commit (kernel/printk/printk_ringbuffer.c:1842)
[   21.619661][  T341]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   21.619664][  T341]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   21.619667][  T341]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.619670][  T341]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   21.619674][  T341]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   21.619678][  T341]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   21.619680][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.619682][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.619686][  T341]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   21.619688][  T341]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   21.619692][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.619694][  T341]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.619698][  T341]  console_emit_next_record (kernel/printk/printk.c:3183)
[   21.619702][  T341]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   21.619704][  T341]  ? 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))
[   21.619707][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.619709][  T341]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.619712][  T341]  console_flush_one_record (kernel/printk/printk.c:3268)
[   21.619717][  T341]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   21.619718][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.619724][  T341]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   21.619727][  T341]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   21.619728][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.619730][  T341]  ? 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)
[   21.619734][  T341]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   21.619736][  T341]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   21.619738][  T341]  vprintk_emit (kernel/printk/printk.c:2479)
[   21.619742][  T341]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   21.619744][  T341]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   21.619746][  T341]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.619749][  T341]  _printk (kernel/printk/printk.c:2504)
[   21.619753][  T341]  ? snapshot_read.cold (user.c:?)
[   21.619760][  T341]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   21.619765][  T341]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   21.619768][  T341]  br_stp_disable_bridge (net/bridge/br_stp_if.c:76)
[   21.619771][  T341]  br_dev_stop (net/bridge/br_device.c:193)
[   21.619774][  T341]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   21.619776][  T341]  __dev_close_many (net/core/dev.c:1798)
[   21.619781][  T341]  ? netif_open (net/core/dev.c:1755)
[   21.619783][  T341]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   21.619785][  T341]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   21.619789][  T341]  __dev_change_flags (net/core/dev.c:1811 net/core/dev.c:9810)
[   21.619793][  T341]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   21.619796][  T341]  ? synchronize_rcu_normal (kernel/rcu/tree.c:3360)
[   21.619801][  T341]  netif_change_flags (net/core/dev.c:9877)
[   21.619804][  T341]  dev_change_flags (net/core/dev_api.c:68)
[   21.619806][  T341]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   21.619810][  T341]  cycle_netdev (drivers/net/vrf.c:1001)
[   21.619815][  T341]  vrf_del_slave (drivers/net/vrf.c:1068 drivers/net/vrf.c:1075)
[   21.619817][  T341]  do_set_master (net/core/rtnetlink.c:3055)
[   21.619822][  T341]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   21.619825][  T341]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   21.619829][  T341]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   21.619830][  T341]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   21.619832][  T341]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   21.619835][  T341]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   21.619837][  T341]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   21.619839][  T341]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   21.619841][  T341]  ? kasan_save_stack (mm/kasan/common.c:58)
[   21.619844][  T341]  ? kasan_save_stack (mm/kasan/common.c:57)
[   21.619845][  T341]  ? kasan_save_track (mm/kasan/common.c:78)
[   21.619846][  T341]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   21.619848][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.619850][  T341]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   21.619854][  T341]  ? ___sys_sendmsg (net/socket.c:2758)
[   21.619857][  T341]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.619859][  T341]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   21.619868][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.619870][  T341]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.619871][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.619873][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.619874][  T341]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   21.619877][  T341]  ? __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)
[   21.619879][  T341]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   21.619881][  T341]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   21.619885][  T341]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   21.619886][  T341]  ? nla_get_range_signed (lib/nlattr.c:270)
[   21.619891][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.619894][  T341]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   21.619899][  T341]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   21.619904][  T341]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   21.619906][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.619910][  T341]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.619912][  T341]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   21.619915][  T341]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   21.619916][  T341]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   21.619920][  T341]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   21.619922][  T341]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   21.619926][  T341]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   21.619927][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.619931][  T341]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   21.619933][  T341]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   21.619937][  T341]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   21.619940][  T341]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   21.619943][  T341]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   21.619949][  T341]  ? 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))
[   21.619951][  T341]  ? 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))
[   21.619956][  T341]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   21.619960][  T341]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   21.619962][  T341]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   21.619966][  T341]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   21.619970][  T341]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   21.619974][  T341]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   21.619976][  T341]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   21.619981][  T341]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   21.619984][  T341]  ____sys_sendmsg (net/socket.c:2713)
[   21.619986][  T341]  ? copy_msghdr_from_user (net/socket.c:2650)
[   21.619989][  T341]  ? sock_write_iter (net/socket.c:1269)
[   21.619990][  T341]  ? move_addr_to_kernel (net/socket.c:258)
[   21.619998][  T341]  ___sys_sendmsg (net/socket.c:2767)
[   21.620000][  T341]  ? copy_msghdr_from_user (net/socket.c:2619)
[   21.620016][  T341]  __sys_sendmsg (net/socket.c:2799)
[   21.620019][  T341]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   21.620025][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.620028][  T341]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   21.620031][  T341]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   21.620034][  T341]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   21.620036][  T341] RIP: 0033:0x7f873cd6454e
[   21.620039][  T341] 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
[   21.620041][  T341] RSP: 002b:00007ffc3919fec0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   21.620043][  T341] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f873cd6454e
[   21.620045][  T341] RDX: 0000000000000000 RSI: 00007ffc3919ff70 RDI: 0000000000000005
[   21.620046][  T341] RBP: 00007ffc3919fed0 R08: 0000000000000000 R09: 0000000000000000
[   21.620047][  T341] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9108c2
[   21.620047][  T341] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffc391a0630
| [   24.858688][  T399] softirqs last disabled at (37908): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   24.858691][  T399] Preemption disabled at:
| [   24.858691][  T399] vprintk_emit (kernel/printk/printk.c:2471)
| [   24.858700][  T399] Tainted: [W]=WARN
[   24.858701][  T399] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   24.858703][  T399] Call Trace:
[   24.858705][  T399]  <TASK>
[   24.858706][  T399]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   24.858712][  T399]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   24.858714][  T399]  __might_resched.cold (kernel/sched/core.c:9234)
[   24.858718][  T399]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   24.858722][  T399]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   24.858727][  T399]  __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))
[   24.858729][  T399]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.858735][  T399]  ? 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)
[   24.858738][  T399]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.858742][  T399]  put_chars (drivers/char/virtio_console.c:1176)
[   24.858745][  T399]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   24.858751][  T399]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   24.858759][  T399]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   24.858762][  T399]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.858766][  T399]  console_emit_next_record (kernel/printk/printk.c:3183)
[   24.858770][  T399]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   24.858772][  T399]  ? 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))
[   24.858776][  T399]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.858778][  T399]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.858782][  T399]  console_flush_one_record (kernel/printk/printk.c:3268)
[   24.858787][  T399]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   24.858789][  T399]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.858794][  T399]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   24.858797][  T399]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   24.858799][  T399]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.858800][  T399]  ? 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)
[   24.858804][  T399]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   24.858806][  T399]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   24.858809][  T399]  vprintk_emit (kernel/printk/printk.c:2479)
[   24.858812][  T399]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   24.858813][  T399]  ? netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   24.858816][  T399]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   24.858818][  T399]  ? __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   24.858821][  T399]  ? ____sys_sendmsg (net/socket.c:2713)
[   24.858822][  T399]  ? ___sys_sendmsg (net/socket.c:2767)
[   24.858824][  T399]  ? __sys_sendmsg (net/socket.c:2799)
[   24.858826][  T399]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   24.858832][  T399]  _printk (kernel/printk/printk.c:2504)
[   24.858835][  T399]  ? snapshot_read.cold (user.c:?)
[   24.858840][  T399]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   24.858844][  T399]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   24.858847][  T399]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   24.858850][  T399]  ? netdev_notice (net/core/dev.c:13194)
[   24.858855][  T399]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.858856][  T399]  ? __up_read (kernel/locking/rwsem.c:1397 (discriminator 1))
[   24.858859][  T399]  ? down_write_nested (kernel/locking/rwsem.c:1759)
[   24.858861][  T399]  ? 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)
[   24.858863][  T399]  netif_set_allmulti.cold (net/core/dev.c:9731 (discriminator 3))
[   24.858867][  T399]  dev_set_allmulti (net/core/dev_api.c:315)
[   24.858874][  T399]  del_nbp (net/bridge/br_if.c:253 net/bridge/br_if.c:341)
[   24.858878][  T399]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   24.858884][  T399]  br_dev_delete (net/bridge/br_if.c:387)
[   24.858887][  T399]  rtnl_dellink (net/core/rtnetlink.c:3651 net/core/rtnetlink.c:3694)
[   24.858889][  T399]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   24.858891][  T399]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.858892][  T399]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.858895][  T399]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   24.858916][  T399]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   24.858918][  T399]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.858921][  T399]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.858923][  T399]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   24.858925][  T399]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.858929][  T399]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   24.858931][  T399]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.858933][  T399]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   24.858935][  T399]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.858939][  T399]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   24.858941][  T399]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   24.858944][  T399]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   24.858946][  T399]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.858950][  T399]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   24.858952][  T399]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.858956][  T399]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   24.858958][  T399]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   24.858960][  T399]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   24.858967][  T399]  ? 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))
[   24.858969][  T399]  ? 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))
[   24.858973][  T399]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   24.858977][  T399]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   24.858980][  T399]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.858984][  T399]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   24.858988][  T399]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   24.858992][  T399]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.858993][  T399]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   24.858999][  T399]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   24.859001][  T399]  ____sys_sendmsg (net/socket.c:2713)
[   24.859004][  T399]  ? copy_msghdr_from_user (net/socket.c:2650)
[   24.859006][  T399]  ? sock_write_iter (net/socket.c:1269)
[   24.859007][  T399]  ? move_addr_to_kernel (net/socket.c:258)
[   24.859015][  T399]  ___sys_sendmsg (net/socket.c:2767)
[   24.859018][  T399]  ? copy_msghdr_from_user (net/socket.c:2619)
[   24.859033][  T399]  __sys_sendmsg (net/socket.c:2799)
[   24.859036][  T399]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   24.859042][  T399]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.859045][  T399]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   24.859047][  T399]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   24.859050][  T399]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   24.859052][  T399] RIP: 0033:0x7f103c03a54e
[   24.859056][  T399] 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
[   24.859058][  T399] RSP: 002b:00007ffef31365b0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   24.859060][  T399] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f103c03a54e
[   24.859062][  T399] RDX: 0000000000000000 RSI: 00007ffef3136660 RDI: 0000000000000005
[   24.859063][  T399] RBP: 00007ffef31365c0 R08: 0000000000000000 R09: 0000000000000000
[   24.859063][  T399] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9108c6
[   24.859064][  T399] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffef3136d20
| [   27.578942][  T488] softirqs last disabled at (25392): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   27.578945][  T488] Preemption disabled at:
| [   27.578945][  T488] vprintk_emit (kernel/printk/printk.c:2471)
| [   27.578954][  T488] Tainted: [W]=WARN
[   27.578955][  T488] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   27.578956][  T488] Call Trace:
[   27.578958][  T488]  <TASK>
[   27.578959][  T488]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   27.578965][  T488]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   27.578967][  T488]  __might_resched.cold (kernel/sched/core.c:9234)
[   27.578971][  T488]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   27.578976][  T488]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   27.578980][  T488]  __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))
[   27.578982][  T488]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.578988][  T488]  ? 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)
[   27.578991][  T488]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.578995][  T488]  put_chars (drivers/char/virtio_console.c:1176)
[   27.578997][  T488]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   27.579004][  T488]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   27.579011][  T488]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   27.579014][  T488]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.579019][  T488]  console_emit_next_record (kernel/printk/printk.c:3183)
[   27.579023][  T488]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   27.579025][  T488]  ? 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))
[   27.579028][  T488]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.579031][  T488]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.579035][  T488]  console_flush_one_record (kernel/printk/printk.c:3268)
[   27.579039][  T488]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   27.579041][  T488]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.579046][  T488]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   27.579049][  T488]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   27.579051][  T488]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.579053][  T488]  ? 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)
[   27.579056][  T488]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   27.579058][  T488]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   27.579061][  T488]  vprintk_emit (kernel/printk/printk.c:2479)
[   27.579064][  T488]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   27.579066][  T488]  ? _mutex_trylock_nest_lock (kernel/locking/mutex.c:1227 (discriminator 6))
[   27.579072][  T488]  _printk (kernel/printk/printk.c:2504)
[   27.579075][  T488]  ? snapshot_read.cold (user.c:?)
[   27.579077][  T488]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   27.579080][  T488]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   27.579083][  T488]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   27.579085][  T488]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   27.579089][  T488]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   27.579091][  T488]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   27.579094][  T488]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   27.579096][  T488]  ? netdev_notice (net/core/dev.c:13194)
[   27.579099][  T488]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   27.579102][  T488]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.579105][  T488]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   27.579108][  T488]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   27.579110][  T488]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   27.579113][  T488]  ? register_netdev (net/core/dev.c:11618)
[   27.579114][  T488]  ? 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))
[   27.579120][  T488]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   27.579122][  T488]  ? __kernel_text_address (kernel/extable.c:79)
[   27.579125][  T488]  ? write_profile (profile.c:?)
[   27.579129][  T488]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   27.579135][  T488]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   27.579138][  T488]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   27.579140][  T488]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   27.579142][  T488]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   27.579144][  T488]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   27.579147][  T488]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   27.579149][  T488]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   27.579151][  T488]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   27.579153][  T488]  ? kasan_save_stack (mm/kasan/common.c:58)
[   27.579155][  T488]  ? kasan_save_stack (mm/kasan/common.c:57)
[   27.579156][  T488]  ? kasan_save_track (mm/kasan/common.c:78)
[   27.579158][  T488]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   27.579160][  T488]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.579162][  T488]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   27.579165][  T488]  ? ___sys_sendmsg (net/socket.c:2758)
[   27.579169][  T488]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.579171][  T488]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   27.579173][  T488]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.579175][  T488]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.579177][  T488]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.579178][  T488]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.579180][  T488]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   27.579182][  T488]  ? __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)
[   27.579183][  T488]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   27.579185][  T488]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   27.579188][  T488]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   27.579190][  T488]  ? nla_get_range_signed (lib/nlattr.c:270)
[   27.579195][  T488]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.579197][  T488]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   27.579202][  T488]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   27.579207][  T488]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   27.579209][  T488]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.579214][  T488]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.579216][  T488]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   27.579218][  T488]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   27.579219][  T488]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.579223][  T488]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   27.579225][  T488]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   27.579228][  T488]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   27.579230][  T488]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.579234][  T488]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.579236][  T488]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   27.579240][  T488]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   27.579246][  T488]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   27.579250][  T488]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   27.579256][  T488]  ? 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))
[   27.579258][  T488]  ? 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))
[   27.579263][  T488]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   27.579267][  T488]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   27.579269][  T488]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   27.579273][  T488]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   27.579277][  T488]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   27.579281][  T488]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.579283][  T488]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   27.579288][  T488]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   27.579291][  T488]  ____sys_sendmsg (net/socket.c:2713)
[   27.579293][  T488]  ? copy_msghdr_from_user (net/socket.c:2650)
[   27.579295][  T488]  ? sock_write_iter (net/socket.c:1269)
[   27.579297][  T488]  ? move_addr_to_kernel (net/socket.c:258)
[   27.579304][  T488]  ___sys_sendmsg (net/socket.c:2767)
[   27.579307][  T488]  ? copy_msghdr_from_user (net/socket.c:2619)
[   27.579323][  T488]  __sys_sendmsg (net/socket.c:2799)
[   27.579325][  T488]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   27.579332][  T488]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.579335][  T488]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   27.579338][  T488]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   27.579341][  T488]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   27.579343][  T488] RIP: 0033:0x7f7b7843554e
[   27.579347][  T488] 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
[   27.579349][  T488] RSP: 002b:00007ffcaf1e6da0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   27.579351][  T488] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f7b7843554e
[   27.579353][  T488] RDX: 0000000000000000 RSI: 00007ffcaf1e6e50 RDI: 0000000000000005
[   27.579354][  T488] RBP: 00007ffcaf1e6db0 R08: 0000000000000000 R09: 0000000000000000
[   27.579354][  T488] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9108c8
[   27.579355][  T488] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffcaf1e7520
| [   36.916287][  T678] softirqs last disabled at (24874): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   36.916290][  T678] Preemption disabled at:
| [   36.916290][  T678] vprintk_emit (kernel/printk/printk.c:2471)
| [   36.916299][  T678] Tainted: [W]=WARN
[   36.916300][  T678] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   36.916302][  T678] Call Trace:
[   36.916303][  T678]  <TASK>
[   36.916305][  T678]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   36.916311][  T678]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   36.916312][  T678]  __might_resched.cold (kernel/sched/core.c:9234)
[   36.916317][  T678]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   36.916321][  T678]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   36.916325][  T678]  __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))
[   36.916327][  T678]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   36.916333][  T678]  ? 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)
[   36.916336][  T678]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   36.916340][  T678]  put_chars (drivers/char/virtio_console.c:1176)
[   36.916342][  T678]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   36.916349][  T678]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   36.916356][  T678]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   36.916359][  T678]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   36.916363][  T678]  console_emit_next_record (kernel/printk/printk.c:3183)
[   36.916367][  T678]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   36.916369][  T678]  ? 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))
[   36.916373][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   36.916375][  T678]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   36.916379][  T678]  console_flush_one_record (kernel/printk/printk.c:3268)
[   36.916383][  T678]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   36.916385][  T678]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   36.916390][  T678]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   36.916393][  T678]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   36.916395][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   36.916397][  T678]  ? 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)
[   36.916400][  T678]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   36.916402][  T678]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   36.916405][  T678]  vprintk_emit (kernel/printk/printk.c:2479)
[   36.916408][  T678]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   36.916411][  T678]  ? _mutex_trylock_nest_lock (kernel/locking/mutex.c:1227 (discriminator 6))
[   36.916416][  T678]  _printk (kernel/printk/printk.c:2504)
[   36.916419][  T678]  ? snapshot_read.cold (user.c:?)
[   36.916421][  T678]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   36.916424][  T678]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   36.916426][  T678]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   36.916429][  T678]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   36.916432][  T678]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   36.916435][  T678]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   36.916437][  T678]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   36.916440][  T678]  ? netdev_notice (net/core/dev.c:13194)
[   36.916443][  T678]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   36.916446][  T678]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   36.916448][  T678]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   36.916452][  T678]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   36.916454][  T678]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   36.916456][  T678]  ? register_netdev (net/core/dev.c:11618)
[   36.916457][  T678]  ? 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))
[   36.916463][  T678]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   36.916465][  T678]  ? __kernel_text_address (kernel/extable.c:79)
[   36.916468][  T678]  ? write_profile (profile.c:?)
[   36.916472][  T678]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   36.916477][  T678]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   36.916481][  T678]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   36.916483][  T678]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   36.916484][  T678]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   36.916486][  T678]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   36.916489][  T678]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   36.916491][  T678]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   36.916493][  T678]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   36.916495][  T678]  ? kasan_save_stack (mm/kasan/common.c:58)
[   36.916497][  T678]  ? kasan_save_stack (mm/kasan/common.c:57)
[   36.916499][  T678]  ? kasan_save_track (mm/kasan/common.c:78)
[   36.916500][  T678]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   36.916502][  T678]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   36.916504][  T678]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   36.916507][  T678]  ? ___sys_sendmsg (net/socket.c:2758)
[   36.916511][  T678]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   36.916513][  T678]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   36.916515][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   36.916517][  T678]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   36.916519][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   36.916520][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   36.916522][  T678]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   36.916524][  T678]  ? __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)
[   36.916525][  T678]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   36.916527][  T678]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   36.916530][  T678]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   36.916532][  T678]  ? nla_get_range_signed (lib/nlattr.c:270)
[   36.916536][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   36.916538][  T678]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   36.916544][  T678]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   36.916549][  T678]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   36.916551][  T678]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   36.916555][  T678]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   36.916557][  T678]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   36.916559][  T678]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   36.916561][  T678]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   36.916564][  T678]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   36.916566][  T678]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   36.916570][  T678]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   36.916571][  T678]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   36.916575][  T678]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   36.916577][  T678]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   36.916581][  T678]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   36.916584][  T678]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   36.916587][  T678]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   36.916593][  T678]  ? 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))
[   36.916595][  T678]  ? 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))
[   36.916600][  T678]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   36.916603][  T678]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   36.916606][  T678]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   36.916610][  T678]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   36.916614][  T678]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   36.916618][  T678]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   36.916620][  T678]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   36.916625][  T678]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   36.916628][  T678]  ____sys_sendmsg (net/socket.c:2713)
[   36.916630][  T678]  ? copy_msghdr_from_user (net/socket.c:2650)
[   36.916632][  T678]  ? sock_write_iter (net/socket.c:1269)
[   36.916634][  T678]  ? move_addr_to_kernel (net/socket.c:258)
[   36.916641][  T678]  ___sys_sendmsg (net/socket.c:2767)
[   36.916644][  T678]  ? copy_msghdr_from_user (net/socket.c:2619)
[   36.916660][  T678]  __sys_sendmsg (net/socket.c:2799)
[   36.916662][  T678]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   36.916669][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   36.916672][  T678]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   36.916675][  T678]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   36.916678][  T678]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   36.916680][  T678] RIP: 0033:0x7f433b61e54e
[   36.916684][  T678] 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
[   36.916686][  T678] RSP: 002b:00007ffddf112730 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   36.916689][  T678] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f433b61e54e
[   36.916690][  T678] RDX: 0000000000000000 RSI: 00007ffddf1127e0 RDI: 0000000000000005
[   36.916691][  T678] RBP: 00007ffddf112740 R08: 0000000000000000 R09: 0000000000000000
[   36.916692][  T678] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9108d2


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