======================================
| [    9.764997][  T187] softirqs last disabled at (51477): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [    9.765000][  T187] Preemption disabled at:
| [    9.765000][  T187] 0x0
| [    9.765011][  T187] Tainted: [W]=WARN
[    9.765012][  T187] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.765013][  T187] Call Trace:
[    9.765015][  T187]  <TASK>
[    9.765017][  T187]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    9.765023][  T187]  __might_resched.cold (kernel/sched/core.c:9234)
[    9.765028][  T187]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    9.765032][  T187]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[    9.765037][  T187]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[    9.765040][  T187]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.765045][  T187]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[    9.765048][  T187]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.765051][  T187]  put_chars (drivers/char/virtio_console.c:1176)
[    9.765054][  T187]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    9.765056][  T187]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[    9.765061][  T187]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[    9.765066][  T187]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    9.765073][  T187]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    9.765075][  T187]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.765077][  T187]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.765081][  T187]  console_emit_next_record (kernel/printk/printk.c:3183)
[    9.765085][  T187]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    9.765087][  T187]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[    9.765090][  T187]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.765093][  T187]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.765096][  T187]  console_flush_one_record (kernel/printk/printk.c:3268)
[    9.765101][  T187]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    9.765103][  T187]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.765108][  T187]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    9.765111][  T187]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    9.765115][  T187]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.765117][  T187]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[    9.765121][  T187]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    9.765123][  T187]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    9.765126][  T187]  vprintk_emit (kernel/printk/printk.c:2479)
[    9.765130][  T187]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    9.765134][  T187]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.765137][  T187]  _printk (kernel/printk/printk.c:2504)
[    9.765147][  T187]  ? snapshot_read.cold (user.c:?)
[    9.765150][  T187]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116)
[    9.765153][  T187]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    9.765156][  T187]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116)
[    9.765159][  T187]  do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4))
[    9.765163][  T187]  ? exit_notify (kernel/exit.c:780)
[    9.765165][  T187]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    9.765168][  T187]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.765172][  T187]  do_group_exit (kernel/exit.c:1151)
[    9.765175][  T187]  __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160)
[    9.765177][  T187]  x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232)
[    9.765179][  T187]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    9.765182][  T187]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[    9.765185][  T187]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.765188][  T187] RIP: 0033:0x7f19b25c21b8
[    9.765190][  T187] Code: Unable to access opcode bytes at 0x7f19b25c218e.

Code starting with the faulting instruction
===========================================
[    9.765191][  T187] RSP: 002b:00007ffd5a9065f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[    9.765193][  T187] RAX: ffffffffffffffda RBX: 00007f19b26f2f88 RCX: 00007f19b25c21b8
[    9.765195][  T187] RDX: 00007f19b230cfc8 RSI: fffffffffffffeb8 RDI: 0000000000000000
[    9.765196][  T187] RBP: 00007ffd5a906650 R08: 0000000000000000 R09: 0000000000008010
[    9.765196][  T187] R10: 00007ffd5a906410 R11: 0000000000000246 R12: 0000000000000001
[    9.765197][  T187] R13: 0000000000000000 R14: 00007f19b26f1680 R15: 00007f19b26f2fa0
| [   11.945408][  T264] softirqs last disabled at (12364): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   11.945411][  T264] Preemption disabled at:
| [   11.945411][  T264] vprintk_emit (kernel/printk/printk.c:2471)
| [   11.945421][  T264] Tainted: [W]=WARN
[   11.945422][  T264] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.945423][  T264] Call Trace:
[   11.945425][  T264]  <TASK>
[   11.945427][  T264]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   11.945432][  T264]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   11.945435][  T264]  __might_resched.cold (kernel/sched/core.c:9234)
[   11.945439][  T264]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   11.945443][  T264]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   11.945448][  T264]  __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))
[   11.945451][  T264]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.945456][  T264]  ? 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)
[   11.945459][  T264]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.945462][  T264]  put_chars (drivers/char/virtio_console.c:1176)
[   11.945465][  T264]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   11.945469][  T264]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   11.945472][  T264]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   11.945475][  T264]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   11.945477][  T264]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.945478][  T264]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.945482][  T264]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   11.945484][  T264]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   11.945487][  T264]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.945491][  T264]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.945495][  T264]  console_emit_next_record (kernel/printk/printk.c:3183)
[   11.945499][  T264]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   11.945500][  T264]  ? 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))
[   11.945504][  T264]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.945506][  T264]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.945510][  T264]  console_flush_one_record (kernel/printk/printk.c:3268)
[   11.945514][  T264]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   11.945516][  T264]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.945521][  T264]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   11.945523][  T264]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   11.945525][  T264]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.945527][  T264]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   11.945531][  T264]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   11.945533][  T264]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   11.945536][  T264]  vprintk_emit (kernel/printk/printk.c:2479)
[   11.945540][  T264]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   11.945542][  T264]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.945544][  T264]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   11.945548][  T264]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   11.945552][  T264]  _printk (kernel/printk/printk.c:2504)
[   11.945555][  T264]  ? snapshot_read.cold (user.c:?)
[   11.945559][  T264]  ? br_multicast_flood (??:?) bridge
[   11.945572][  T264]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   11.945573][  T264]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   11.945575][  T264]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   11.945579][  T264] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   11.945589][  T264] br_init_port (net/bridge/br_stp_if.c:39) bridge
[   11.945597][  T264] new_nbp (net/bridge/br_if.c:449) bridge
[   11.945606][  T264] br_add_if (net/bridge/br_if.c:592) bridge
[   11.945613][  T264]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   11.945617][  T264]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   11.945620][  T264]  ? __kernel_text_address (kernel/extable.c:79)
[   11.945623][  T264]  do_set_master (net/core/rtnetlink.c:3071)
[   11.945628][  T264]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   11.945631][  T264]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   11.945634][  T264]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   11.945635][  T264]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   11.945638][  T264]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   11.945641][  T264]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   11.945644][  T264]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   11.945646][  T264]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   11.945648][  T264]  ? kasan_save_stack (mm/kasan/common.c:58)
[   11.945651][  T264]  ? kasan_save_stack (mm/kasan/common.c:57)
[   11.945652][  T264]  ? kasan_save_track (mm/kasan/common.c:78)
[   11.945655][  T264]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.945657][  T264]  ? netlink_seq_next (net/netlink/af_netlink.c:2684)
[   11.945660][  T264]  ? ___sys_sendmsg (net/socket.c:2757)
[   11.945665][  T264]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.945666][  T264]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   11.945669][  T264]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.945671][  T264]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.945673][  T264]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.945674][  T264]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.945677][  T264]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   11.945680][  T264]  ? __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)
[   11.945682][  T264]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   11.945684][  T264]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   11.945687][  T264]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   11.945689][  T264]  ? nla_get_range_signed (lib/nlattr.c:270)
[   11.945694][  T264]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   11.945699][  T264]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   11.945704][  T264]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.945706][  T264]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.945710][  T264]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.945712][  T264]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.945714][  T264]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.945716][  T264]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.945719][  T264]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.945721][  T264]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   11.945724][  T264]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   11.945725][  T264]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.945730][  T264]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.945732][  T264]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.945735][  T264]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   11.945737][  T264]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   11.945739][  T264]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   11.945745][  T264]  ? 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))
[   11.945747][  T264]  ? 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))
[   11.945751][  T264]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   11.945755][  T264]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   11.945757][  T264]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.945761][  T264]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   11.945765][  T264]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   11.945768][  T264]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[   11.945774][  T264]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   11.945776][  T264]  ? copy_msghdr_from_user (net/socket.c:2650)
[   11.945778][  T264]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   11.945780][  T264]  ? move_addr_to_kernel (net/socket.c:258)
[   11.945787][  T264]  ___sys_sendmsg (net/socket.c:2767)
[   11.945790][  T264]  ? copy_msghdr_from_user (net/socket.c:2619)
[   11.945805][  T264]  __sys_sendmsg (net/socket.c:2799)
[   11.945808][  T264]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   11.945814][  T264]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.945818][  T264]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   11.945820][  T264]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   11.945823][  T264]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   11.945825][  T264] RIP: 0033:0x7ff042d7854e
[   11.945828][  T264] 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
[   11.945830][  T264] RSP: 002b:00007ffcc95d4050 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   11.945833][  T264] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007ff042d7854e
[   11.945834][  T264] RDX: 0000000000000000 RSI: 00007ffcc95d4100 RDI: 0000000000000005
[   11.945835][  T264] RBP: 00007ffcc95d4060 R08: 0000000000000000 R09: 0000000000000000
[   11.945836][  T264] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91834a
[   11.945837][  T264] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffcc95d47c0
| [   15.347456][  T368] softirqs last disabled at (12964): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   15.347458][  T368] Preemption disabled at:
| [   15.347459][  T368] vprintk_emit (kernel/printk/printk.c:2471)
| [   15.347468][  T368] Tainted: [W]=WARN
[   15.347469][  T368] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.347471][  T368] Call Trace:
[   15.347472][  T368]  <TASK>
[   15.347474][  T368]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   15.347480][  T368]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   15.347482][  T368]  __might_resched.cold (kernel/sched/core.c:9234)
[   15.347487][  T368]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   15.347491][  T368]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   15.347496][  T368]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   15.347498][  T368]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.347503][  T368]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   15.347506][  T368]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.347509][  T368]  put_chars (drivers/char/virtio_console.c:1176)
[   15.347511][  T368]  ? prb_final_commit (kernel/printk/printk_ringbuffer.c:1842)
[   15.347513][  T368]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   15.347516][  T368]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   15.347520][  T368]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.347523][  T368]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   15.347526][  T368]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   15.347529][  T368]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   15.347531][  T368]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.347532][  T368]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.347536][  T368]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   15.347538][  T368]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   15.347541][  T368]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.347544][  T368]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.347548][  T368]  console_emit_next_record (kernel/printk/printk.c:3183)
[   15.347551][  T368]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   15.347553][  T368]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   15.347556][  T368]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.347558][  T368]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.347562][  T368]  console_flush_one_record (kernel/printk/printk.c:3268)
[   15.347566][  T368]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   15.347568][  T368]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.347573][  T368]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   15.347576][  T368]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   15.347577][  T368]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.347580][  T368]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   15.347583][  T368]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   15.347585][  T368]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   15.347588][  T368]  vprintk_emit (kernel/printk/printk.c:2479)
[   15.347593][  T368]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   15.347595][  T368]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   15.347598][  T368]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   15.347601][  T368]  _printk (kernel/printk/printk.c:2504)
[   15.347605][  T368]  ? snapshot_read.cold (user.c:?)
[   15.347609][  T368]  ? br_multicast_flood (??:?) bridge
[   15.347622][  T368]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   15.347623][  T368]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   15.347625][  T368]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   15.347629][  T368] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   15.347639][  T368] br_init_port (net/bridge/br_stp_if.c:39) bridge
[   15.347648][  T368] new_nbp (net/bridge/br_if.c:449) bridge
[   15.347657][  T368] br_add_if (net/bridge/br_if.c:592) bridge
[   15.347664][  T368]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   15.347668][  T368]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   15.347671][  T368]  ? __kernel_text_address (kernel/extable.c:79)
[   15.347675][  T368]  do_set_master (net/core/rtnetlink.c:3071)
[   15.347679][  T368]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   15.347682][  T368]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   15.347685][  T368]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   15.347687][  T368]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   15.347688][  T368]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   15.347692][  T368]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   15.347694][  T368]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.347696][  T368]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   15.347698][  T368]  ? kasan_save_stack (mm/kasan/common.c:58)
[   15.347701][  T368]  ? kasan_save_stack (mm/kasan/common.c:57)
[   15.347703][  T368]  ? kasan_save_track (mm/kasan/common.c:78)
[   15.347706][  T368]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.347707][  T368]  ? netlink_seq_next (net/netlink/af_netlink.c:2684)
[   15.347710][  T368]  ? ___sys_sendmsg (net/socket.c:2757)
[   15.347715][  T368]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   15.347717][  T368]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   15.347719][  T368]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.347721][  T368]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.347723][  T368]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.347725][  T368]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.347727][  T368]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   15.347731][  T368]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   15.347734][  T368]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   15.347736][  T368]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   15.347739][  T368]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   15.347741][  T368]  ? nla_get_range_signed (lib/nlattr.c:270)
[   15.347746][  T368]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   15.347751][  T368]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   15.347756][  T368]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   15.347758][  T368]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.347762][  T368]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   15.347764][  T368]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   15.347766][  T368]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   15.347768][  T368]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   15.347771][  T368]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   15.347773][  T368]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   15.347776][  T368]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   15.347777][  T368]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.347781][  T368]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   15.347783][  T368]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   15.347787][  T368]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   15.347788][  T368]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   15.347791][  T368]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   15.347797][  T368]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   15.347798][  T368]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   15.347802][  T368]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   15.347806][  T368]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   15.347809][  T368]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.347812][  T368]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   15.347816][  T368]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   15.347820][  T368]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[   15.347825][  T368]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   15.347827][  T368]  ? copy_msghdr_from_user (net/socket.c:2650)
[   15.347829][  T368]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   15.347831][  T368]  ? move_addr_to_kernel (net/socket.c:258)
[   15.347838][  T368]  ___sys_sendmsg (net/socket.c:2767)
[   15.347841][  T368]  ? copy_msghdr_from_user (net/socket.c:2619)
[   15.347856][  T368]  __sys_sendmsg (net/socket.c:2799)
[   15.347858][  T368]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   15.347864][  T368]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.347868][  T368]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   15.347870][  T368]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   15.347873][  T368]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   15.347876][  T368] RIP: 0033:0x7fd29c13f54e
[   15.347879][  T368] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   15.347880][  T368] RSP: 002b:00007ffca4afb1c0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   15.347883][  T368] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fd29c13f54e
[   15.347885][  T368] RDX: 0000000000000000 RSI: 00007ffca4afb270 RDI: 0000000000000005
[   15.347886][  T368] RBP: 00007ffca4afb1d0 R08: 0000000000000000 R09: 0000000000000000
[   15.347887][  T368] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91834d
[   15.347887][  T368] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffca4afb930
| [   17.268930][    C1]
| [   17.268930][    C1]
| [   17.268930][    C1] stack backtrace:
| [   17.268936][    C1] Tainted: [W]=WARN
[   17.268937][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.268938][    C1] Workqueue: events free_obj_work
[   17.268942][    C1] Call Trace:
[   17.268943][    C1]  <IRQ>
[   17.268944][    C1]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   17.268948][    C1]  print_irq_inversion_bug.part.0.cold (kernel/locking/lockdep.c:4141)
[   17.268950][    C1]  mark_lock_irq (kernel/locking/lockdep.c:4095 kernel/locking/lockdep.c:4174 kernel/locking/lockdep.c:4310)
[   17.268953][    C1]  mark_lock (kernel/locking/lockdep.c:4769)
[   17.268955][    C1]  mark_usage (kernel/locking/lockdep.c:4658)
[   17.268957][    C1]  __lock_acquire (kernel/locking/lockdep.c:5208)
[   17.268959][    C1]  lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   17.268960][    C1]  ? console_lock_spinning_enable (kernel/printk/printk.c:1902 (discriminator 2))
[   17.268962][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.268965][    C1]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.268967][    C1]  console_lock_spinning_enable (kernel/printk/printk.c:1902 (discriminator 2))
[   17.268969][    C1]  ? console_lock_spinning_enable (kernel/printk/printk.c:1902 (discriminator 2))
[   17.268971][    C1]  console_emit_next_record (kernel/printk/printk.c:3177)
[   17.268973][    C1]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   17.268974][    C1]  ? 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))
[   17.268976][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.268978][    C1]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.268980][    C1]  console_flush_one_record (kernel/printk/printk.c:3268)
[   17.268982][    C1]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   17.268984][    C1]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.268986][    C1]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   17.268987][    C1]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   17.268989][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.268991][    C1]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   17.268993][    C1]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   17.268994][    C1]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   17.268996][    C1]  vprintk_emit (kernel/printk/printk.c:2479)
[   17.268999][    C1]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   17.269001][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   17.269003][    C1]  _printk (kernel/printk/printk.c:2504)
[   17.269004][    C1]  ? snapshot_read.cold (user.c:?)
[   17.269006][    C1]  ? ___ratelimit (lib/ratelimit.c:97 (discriminator 3))
[   17.269009][    C1]  ? fdb_notify.isra.0 (net/bridge/br_fdb.c:181) bridge
[   17.269016][    C1]  ? idr_get_free (??:?)
[   17.269019][    C1] br_fdb_update.cold (net/bridge/br_fdb.c:987 (discriminator 1)) bridge
[   17.269025][    C1]  ? br_fdb_add_local (net/bridge/br_fdb.c:964) bridge
[   17.269032][    C1]  ? __allowed_ingress (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/bridge/br_private.h:771 net/bridge/br_vlan.c:612) bridge
[   17.269040][    C1]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   17.269042][    C1]  ? br_allowed_ingress (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/bridge/br_private.h:771 net/bridge/br_vlan.c:657) bridge
[   17.269049][    C1] br_handle_frame_finish (net/bridge/br_input.c:144 (discriminator 1)) bridge
[   17.269055][    C1]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.269057][    C1]  ? br_handle_local_finish (net/bridge/br_input.c:265) bridge
[   17.269063][    C1]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   17.269066][    C1] br_handle_frame (net/bridge/br_input.c:315 (discriminator 1) net/bridge/br_input.c:442 (discriminator 1)) bridge
[   17.269072][    C1]  ? br_handle_frame_finish (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) bridge
[   17.269078][    C1]  __netif_receive_skb_core.constprop.0 (net/core/dev.c:6151)
[   17.269081][    C1]  ? encap_bypass_if_local (drivers/net/vxlan/vxlan_core.c:2338) vxlan
[   17.269087][    C1]  ? do_xdp_generic (net/core/dev.c:5732)
[   17.269089][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   17.269091][    C1]  ? encap_bypass_if_local (drivers/net/vxlan/vxlan_core.c:2338) vxlan
[   17.269094][    C1]  ? udpv6_queue_rcv_one_skb (net/ipv6/udp.c:842)
[   17.269096][    C1]  ? udpv6_queue_rcv_one_skb (net/ipv6/udp.c:844)
[   17.269098][    C1]  ? udp6_unicast_rcv_skb (net/ipv6/udp.c:1029)
[   17.269099][    C1]  ? ip6_protocol_deliver_rcu (net/ipv6/ip6_input.c:498 (discriminator 54))
[   17.269102][    C1]  __netif_receive_skb_list_core (net/core/dev.c:6339)
[   17.269105][    C1]  ? __netif_receive_skb_core.constprop.0 (./include/linux/filter.h:885 (discriminator 1))
[   17.269107][    C1]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   17.269108][    C1]  ? netif_receive_skb_list_internal (./include/linux/rcupdate.h:309 (discriminator 2) ./include/linux/rcupdate.h:849 (discriminator 2) net/core/dev.c:6482 (discriminator 2))
[   17.269110][    C1]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.269115][    C1]  netif_receive_skb_list_internal (net/core/dev.c:6406 net/core/dev.c:6497)
[   17.269117][    C1]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   17.269119][    C1]  ? process_backlog (net/core/dev.c:6752 (discriminator 28))
[   17.269121][    C1]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.269123][    C1]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   17.269125][    C1]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.269127][    C1]  napi_complete_done (./include/net/gro.h:523 ./include/net/gro.h:519 ./include/net/gro.h:531 net/core/dev.c:6865)
[   17.269128][    C1]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   17.269130][    C1]  ? netif_receive_skb_list (net/core/dev.c:6551)
[   17.269132][    C1]  ? gro_cell_poll (./include/linux/local_lock_internal.h:62 (discriminator 2) net/core/gro_cells.c:68 (discriminator 2))
[   17.269134][    C1]  gro_cell_poll (net/core/gro_cells.c:76)
[   17.269136][    C1]  __napi_poll (net/core/dev.c:7787)
[   17.269138][    C1]  net_rx_action (net/core/dev.c:7850 net/core/dev.c:8007)
[   17.269141][    C1]  ? __napi_poll (./include/net/gro.h:507)
[   17.269142][    C1]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.269144][    C1]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:2102)
[   17.269148][    C1]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116)
[   17.269149][    C1]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   17.269151][    C1]  handle_softirqs (kernel/softirq.c:645)
[   17.269153][    C1]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[   17.269155][    C1]  ? 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)
[   17.269157][    C1]  __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
[   17.269158][    C1]  irq_exit_rcu (kernel/softirq.c:784)
[   17.269159][    C1]  common_interrupt (arch/x86/kernel/irq.c:273 (discriminator 39))
[   17.269165][    C1]  </IRQ>
[   17.269165][    C1]  <TASK>
[   17.269166][    C1]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:665)
[   17.269168][    C1] RIP: 0010:lock_acquire.part.0 (./arch/x86/include/asm/irqflags.h:158 (discriminator 1) kernel/locking/lockdep.c:5912 (discriminator 1))
[   17.269170][    C1] Code: ff 65 0f c1 05 ff a7 38 04 83 f8 01 4c 8b 14 24 0f 85 35 01 00 00 9c 58 f6 c4 02 0f 85 52 01 00 00 4d 85 d2 0f 85 1b 01 00 00 <48> 8b 44 24 30 65 48 2b 05 d1 62 38 04 0f 85 48 01 00 00 48 83 c4
All code
========
   0:	ff 65 0f             	jmp    *0xf(%rbp)
   3:	c1 05 ff a7 38 04 83 	roll   $0x83,0x438a7ff(%rip)        # 0x438a809
   a:	f8                   	clc
   b:	01 4c 8b 14          	add    %ecx,0x14(%rbx,%rcx,4)
   f:	24 0f                	and    $0xf,%al
  11:	85 35 01 00 00 9c    	test   %esi,-0x63ffffff(%rip)        # 0xffffffff9c000018
  17:	58                   	pop    %rax
  18:	f6 c4 02             	test   $0x2,%ah
  1b:	0f 85 52 01 00 00    	jne    0x173
  21:	4d 85 d2             	test   %r10,%r10
  24:	0f 85 1b 01 00 00    	jne    0x145
  2a:*	48 8b 44 24 30       	mov    0x30(%rsp),%rax		<-- trapping instruction
  2f:	65 48 2b 05 d1 62 38 	sub    %gs:0x43862d1(%rip),%rax        # 0x4386308
  36:	04 
  37:	0f 85 48 01 00 00    	jne    0x185
  3d:	48                   	rex.W
  3e:	83                   	.byte 0x83
  3f:	c4                   	.byte 0xc4

Code starting with the faulting instruction
===========================================
   0:	48 8b 44 24 30       	mov    0x30(%rsp),%rax
   5:	65 48 2b 05 d1 62 38 	sub    %gs:0x43862d1(%rip),%rax        # 0x43862de
   c:	04 
   d:	0f 85 48 01 00 00    	jne    0x15b
  13:	48                   	rex.W
  14:	83                   	.byte 0x83
  15:	c4                   	.byte 0xc4
[   17.269171][    C1] RSP: 0018:ffa000000036f600 EFLAGS: 00000206
[   17.269173][    C1] RAX: 0000000000000046 RBX: 0000000000000000 RCX: 702f4e1af48e4a35
[   17.269175][    C1] RDX: 0000000000000000 RSI: ffffffffba021b15 RDI: ffffffffb9a8d8e0
[   17.269176][    C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ff1100000249aee0
[   17.269176][    C1] R10: 0000000000000200 R11: 0000000000000001 R12: ffffffffba580b00
[   17.269177][    C1] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
[   17.269179][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.269181][    C1]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.269183][    C1]  ? free_object_list.isra.0 (lib/debugobjects.c:326)
[   17.269185][    C1]  unwind_next_frame (./include/linux/rcupdate.h:309 (discriminator 2) ./include/linux/rcupdate.h:849 (discriminator 2) ./include/linux/rcupdate.h:1216 (discriminator 2) arch/x86/kernel/unwind_orc.c:495 (discriminator 2))
[   17.269186][    C1]  ? unwind_next_frame (./include/linux/rcupdate.h:309 (discriminator 2) ./include/linux/rcupdate.h:849 (discriminator 2) ./include/linux/rcupdate.h:1216 (discriminator 2) arch/x86/kernel/unwind_orc.c:495 (discriminator 2))
[   17.269187][    C1]  ? ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
[   17.269189][    C1]  ? stack_access_ok (./arch/x86/include/asm/stacktrace.h:55)
[   17.269191][    C1]  ? __unwind_start (arch/x86/kernel/unwind_orc.c:787)
[   17.269192][    C1]  ? write_profile (profile.c:?)
[   17.269194][    C1]  arch_stack_walk (arch/x86/kernel/stacktrace.c:25)
[   17.269196][    C1]  ? ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
[   17.269198][    C1]  stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   17.269199][    C1]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   17.269200][    C1]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   17.269202][    C1]  kasan_save_stack (mm/kasan/common.c:57)
[   17.269204][    C1]  ? kasan_save_stack (mm/kasan/common.c:57)
[   17.269206][    C1]  ? kasan_save_track (mm/kasan/common.c:78)
[   17.269207][    C1]  ? kasan_save_free_info (mm/kasan/generic.c:584)
[   17.269209][    C1]  ? __kasan_slab_free (mm/kasan/common.c:253 mm/kasan/common.c:285)
[   17.269210][    C1]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6626)
[   17.269212][    C1]  ? free_object_list.isra.0 (lib/debugobjects.c:326)
[   17.269213][    C1]  ? free_obj_work (lib/debugobjects.c:530)
[   17.269215][    C1]  ? process_one_work (kernel/workqueue.c:3387)
[   17.269216][    C1]  ? worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   17.269217][    C1]  ? kthread (kernel/kthread.c:436)
[   17.269219][    C1]  ? ret_from_fork (arch/x86/kernel/process.c:158)
[   17.269220][    C1]  ? ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
[   17.269224][    C1]  kasan_save_track (mm/kasan/common.c:78)
[   17.269226][    C1]  kasan_save_free_info (mm/kasan/generic.c:584)
[   17.269228][    C1]  __kasan_slab_free (mm/kasan/common.c:253 mm/kasan/common.c:285)
[   17.269230][    C1]  kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6626)
[   17.269232][    C1]  free_object_list.isra.0 (lib/debugobjects.c:326)
[   17.269233][    C1]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   17.269235][    C1]  free_obj_work (lib/debugobjects.c:530)
[   17.269237][    C1]  ? object_cpu_offline (./include/linux/list.h:1043)
[   17.269239][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.269240][    C1]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.269242][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.269244][    C1]  ? trace_workqueue_execute_start (./include/trace/events/workqueue.h:84 (discriminator 22))
[   17.269246][    C1]  process_one_work (kernel/workqueue.c:3387)
[   17.269248][    C1]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   17.269250][    C1]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   17.269253][    C1]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   17.269255][    C1]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   17.269257][    C1]  ? __kthread_parkme (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/kthread.c:272)
[   17.269258][    C1]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   17.269260][    C1]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   17.269262][    C1]  kthread (kernel/kthread.c:436)
[   17.269263][    C1]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   17.269265][    C1]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   17.269267][    C1]  ret_from_fork (arch/x86/kernel/process.c:158)
[   17.269269][    C1]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   17.269270][    C1]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   17.269273][    C1]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   17.269274][    C1]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   17.269291][    C1] softirqs last disabled at (912311): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   17.269293][    C1] Preemption disabled at:
| [   17.269293][    C1] handle_softirqs (kernel/softirq.c:486 (discriminator 1) kernel/softirq.c:621 (discriminator 1))
| [   17.269298][    C1] Tainted: [W]=WARN
[   17.269298][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.269299][    C1] Workqueue: events free_obj_work
[   17.269301][    C1] Call Trace:
[   17.269302][    C1]  <IRQ>
[   17.269302][    C1]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   17.269304][    C1]  ? handle_softirqs (kernel/softirq.c:486 (discriminator 1) kernel/softirq.c:621 (discriminator 1))
[   17.269306][    C1]  __might_resched.cold (kernel/sched/core.c:9234)
[   17.269308][    C1]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   17.269311][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.269313][    C1]  __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))
[   17.269315][    C1]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   17.269316][    C1]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.269318][    C1]  ? 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)
[   17.269319][    C1]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.269321][    C1]  put_chars (drivers/char/virtio_console.c:1176)
[   17.269323][    C1]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   17.269326][    C1]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   17.269327][    C1]  ? __lock_acquire (kernel/locking/lockdep.c:5208)
[   17.269329][    C1]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   17.269331][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.269332][    C1]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.269334][    C1]  console_emit_next_record (kernel/printk/printk.c:3183)
[   17.269336][    C1]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   17.269338][    C1]  ? 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))
[   17.269340][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.269341][    C1]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.269343][    C1]  console_flush_one_record (kernel/printk/printk.c:3268)
[   17.269345][    C1]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   17.269347][    C1]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.269349][    C1]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   17.269351][    C1]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   17.269353][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.269354][    C1]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   17.269356][    C1]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   17.269357][    C1]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   17.269359][    C1]  vprintk_emit (kernel/printk/printk.c:2479)
[   17.269361][    C1]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   17.269363][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   17.269365][    C1]  _printk (kernel/printk/printk.c:2504)
[   17.269367][    C1]  ? snapshot_read.cold (user.c:?)
[   17.269369][    C1]  ? ___ratelimit (lib/ratelimit.c:97 (discriminator 3))
[   17.269371][    C1]  ? fdb_notify.isra.0 (net/bridge/br_fdb.c:181) bridge
[   17.269377][    C1]  ? idr_get_free (??:?)
[   17.269380][    C1] br_fdb_update.cold (net/bridge/br_fdb.c:987 (discriminator 1)) bridge
[   17.269387][    C1]  ? br_fdb_add_local (net/bridge/br_fdb.c:964) bridge
[   17.269393][    C1]  ? __allowed_ingress (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/bridge/br_private.h:771 net/bridge/br_vlan.c:612) bridge
[   17.269399][    C1]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   17.269401][    C1]  ? br_allowed_ingress (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/bridge/br_private.h:771 net/bridge/br_vlan.c:657) bridge
[   17.269407][    C1] br_handle_frame_finish (net/bridge/br_input.c:144 (discriminator 1)) bridge
[   17.269413][    C1]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.269415][    C1]  ? br_handle_local_finish (net/bridge/br_input.c:265) bridge
[   17.269421][    C1]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   17.269424][    C1] br_handle_frame (net/bridge/br_input.c:315 (discriminator 1) net/bridge/br_input.c:442 (discriminator 1)) bridge
[   17.269430][    C1]  ? br_handle_frame_finish (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) bridge
[   17.269436][    C1]  __netif_receive_skb_core.constprop.0 (net/core/dev.c:6151)
[   17.269438][    C1]  ? encap_bypass_if_local (drivers/net/vxlan/vxlan_core.c:2338) vxlan
[   17.269442][    C1]  ? do_xdp_generic (net/core/dev.c:5732)
[   17.269444][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   17.269446][    C1]  ? encap_bypass_if_local (drivers/net/vxlan/vxlan_core.c:2338) vxlan
[   17.269449][    C1]  ? udpv6_queue_rcv_one_skb (net/ipv6/udp.c:842)
[   17.269450][    C1]  ? udpv6_queue_rcv_one_skb (net/ipv6/udp.c:844)
[   17.269452][    C1]  ? udp6_unicast_rcv_skb (net/ipv6/udp.c:1029)
[   17.269453][    C1]  ? ip6_protocol_deliver_rcu (net/ipv6/ip6_input.c:498 (discriminator 54))
[   17.269455][    C1]  __netif_receive_skb_list_core (net/core/dev.c:6339)
[   17.269458][    C1]  ? __netif_receive_skb_core.constprop.0 (./include/linux/filter.h:885 (discriminator 1))
[   17.269459][    C1]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   17.269461][    C1]  ? netif_receive_skb_list_internal (./include/linux/rcupdate.h:309 (discriminator 2) ./include/linux/rcupdate.h:849 (discriminator 2) net/core/dev.c:6482 (discriminator 2))
[   17.269463][    C1]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.269465][    C1]  netif_receive_skb_list_internal (net/core/dev.c:6406 net/core/dev.c:6497)
[   17.269466][    C1]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   17.269468][    C1]  ? process_backlog (net/core/dev.c:6752 (discriminator 28))
[   17.269470][    C1]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.269471][    C1]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   17.269473][    C1]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.269475][    C1]  napi_complete_done (./include/net/gro.h:523 ./include/net/gro.h:519 ./include/net/gro.h:531 net/core/dev.c:6865)
[   17.269477][    C1]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   17.269478][    C1]  ? netif_receive_skb_list (net/core/dev.c:6551)
[   17.269480][    C1]  ? gro_cell_poll (./include/linux/local_lock_internal.h:62 (discriminator 2) net/core/gro_cells.c:68 (discriminator 2))
[   17.269482][    C1]  gro_cell_poll (net/core/gro_cells.c:76)
[   17.269485][    C1]  __napi_poll (net/core/dev.c:7787)
[   17.269487][    C1]  net_rx_action (net/core/dev.c:7850 net/core/dev.c:8007)
[   17.269489][    C1]  ? __napi_poll (./include/net/gro.h:507)
[   17.269491][    C1]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.269492][    C1]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:2102)
[   17.269495][    C1]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116)
[   17.269497][    C1]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   17.269499][    C1]  handle_softirqs (kernel/softirq.c:645)
[   17.269501][    C1]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[   17.269502][    C1]  ? 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)
[   17.269504][    C1]  __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
[   17.269505][    C1]  irq_exit_rcu (kernel/softirq.c:784)
[   17.269507][    C1]  common_interrupt (arch/x86/kernel/irq.c:273 (discriminator 39))
[   17.269508][    C1]  </IRQ>
[   17.269508][    C1]  <TASK>
[   17.269509][    C1]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:665)
[   17.269510][    C1] RIP: 0010:lock_acquire.part.0 (./arch/x86/include/asm/irqflags.h:158 (discriminator 1) kernel/locking/lockdep.c:5912 (discriminator 1))
[   17.269512][    C1] Code: ff 65 0f c1 05 ff a7 38 04 83 f8 01 4c 8b 14 24 0f 85 35 01 00 00 9c 58 f6 c4 02 0f 85 52 01 00 00 4d 85 d2 0f 85 1b 01 00 00 <48> 8b 44 24 30 65 48 2b 05 d1 62 38 04 0f 85 48 01 00 00 48 83 c4
All code
========
   0:	ff 65 0f             	jmp    *0xf(%rbp)
   3:	c1 05 ff a7 38 04 83 	roll   $0x83,0x438a7ff(%rip)        # 0x438a809
   a:	f8                   	clc
   b:	01 4c 8b 14          	add    %ecx,0x14(%rbx,%rcx,4)
   f:	24 0f                	and    $0xf,%al
  11:	85 35 01 00 00 9c    	test   %esi,-0x63ffffff(%rip)        # 0xffffffff9c000018
  17:	58                   	pop    %rax
  18:	f6 c4 02             	test   $0x2,%ah
  1b:	0f 85 52 01 00 00    	jne    0x173
  21:	4d 85 d2             	test   %r10,%r10
  24:	0f 85 1b 01 00 00    	jne    0x145
  2a:*	48 8b 44 24 30       	mov    0x30(%rsp),%rax		<-- trapping instruction
  2f:	65 48 2b 05 d1 62 38 	sub    %gs:0x43862d1(%rip),%rax        # 0x4386308
  36:	04 
  37:	0f 85 48 01 00 00    	jne    0x185
  3d:	48                   	rex.W
  3e:	83                   	.byte 0x83
  3f:	c4                   	.byte 0xc4

Code starting with the faulting instruction
===========================================
   0:	48 8b 44 24 30       	mov    0x30(%rsp),%rax
   5:	65 48 2b 05 d1 62 38 	sub    %gs:0x43862d1(%rip),%rax        # 0x43862de
   c:	04 
   d:	0f 85 48 01 00 00    	jne    0x15b
  13:	48                   	rex.W
  14:	83                   	.byte 0x83
  15:	c4                   	.byte 0xc4
[   17.269513][    C1] RSP: 0018:ffa000000036f600 EFLAGS: 00000206
[   17.269514][    C1] RAX: 0000000000000046 RBX: 0000000000000000 RCX: 702f4e1af48e4a35
[   17.269515][    C1] RDX: 0000000000000000 RSI: ffffffffba021b15 RDI: ffffffffb9a8d8e0
[   17.269516][    C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ff1100000249aee0
[   17.269517][    C1] R10: 0000000000000200 R11: 0000000000000001 R12: ffffffffba580b00
[   17.269517][    C1] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
[   17.269519][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.269521][    C1]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.269523][    C1]  ? free_object_list.isra.0 (lib/debugobjects.c:326)
[   17.269524][    C1]  unwind_next_frame (./include/linux/rcupdate.h:309 (discriminator 2) ./include/linux/rcupdate.h:849 (discriminator 2) ./include/linux/rcupdate.h:1216 (discriminator 2) arch/x86/kernel/unwind_orc.c:495 (discriminator 2))
[   17.269526][    C1]  ? unwind_next_frame (./include/linux/rcupdate.h:309 (discriminator 2) ./include/linux/rcupdate.h:849 (discriminator 2) ./include/linux/rcupdate.h:1216 (discriminator 2) arch/x86/kernel/unwind_orc.c:495 (discriminator 2))
[   17.269527][    C1]  ? ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
[   17.269529][    C1]  ? stack_access_ok (./arch/x86/include/asm/stacktrace.h:55)
[   17.269530][    C1]  ? __unwind_start (arch/x86/kernel/unwind_orc.c:787)
[   17.269532][    C1]  ? write_profile (profile.c:?)
[   17.269533][    C1]  arch_stack_walk (arch/x86/kernel/stacktrace.c:25)
[   17.269536][    C1]  ? ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
[   17.269537][    C1]  stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   17.269539][    C1]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   17.269540][    C1]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   17.269542][    C1]  kasan_save_stack (mm/kasan/common.c:57)
[   17.269544][    C1]  ? kasan_save_stack (mm/kasan/common.c:57)
[   17.269545][    C1]  ? kasan_save_track (mm/kasan/common.c:78)
[   17.269546][    C1]  ? kasan_save_free_info (mm/kasan/generic.c:584)
[   17.269548][    C1]  ? __kasan_slab_free (mm/kasan/common.c:253 mm/kasan/common.c:285)
[   17.269549][    C1]  ? kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6626)
[   17.269551][    C1]  ? free_object_list.isra.0 (lib/debugobjects.c:326)
[   17.269552][    C1]  ? free_obj_work (lib/debugobjects.c:530)
[   17.269554][    C1]  ? process_one_work (kernel/workqueue.c:3387)
[   17.269555][    C1]  ? worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   17.269557][    C1]  ? kthread (kernel/kthread.c:436)
[   17.269558][    C1]  ? ret_from_fork (arch/x86/kernel/process.c:158)
[   17.269559][    C1]  ? ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
[   17.269563][    C1]  kasan_save_track (mm/kasan/common.c:78)
[   17.269565][    C1]  kasan_save_free_info (mm/kasan/generic.c:584)
[   17.269567][    C1]  __kasan_slab_free (mm/kasan/common.c:253 mm/kasan/common.c:285)
[   17.269569][    C1]  kmem_cache_free (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6626)
[   17.269571][    C1]  free_object_list.isra.0 (lib/debugobjects.c:326)
[   17.269572][    C1]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   17.269574][    C1]  free_obj_work (lib/debugobjects.c:530)
[   17.269576][    C1]  ? object_cpu_offline (./include/linux/list.h:1043)
[   17.269578][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.269579][    C1]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.269581][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.269583][    C1]  ? trace_workqueue_execute_start (./include/trace/events/workqueue.h:84 (discriminator 22))
[   17.269584][    C1]  process_one_work (kernel/workqueue.c:3387)
[   17.269587][    C1]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   17.269589][    C1]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   17.269591][    C1]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   17.269593][    C1]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   17.269595][    C1]  ? __kthread_parkme (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/kthread.c:272)
[   17.269596][    C1]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   17.269598][    C1]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   17.269600][    C1]  kthread (kernel/kthread.c:436)
[   17.269601][    C1]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   17.269602][    C1]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   17.269604][    C1]  ret_from_fork (arch/x86/kernel/process.c:158)
[   17.269605][    C1]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   17.269607][    C1]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   17.269609][    C1]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   17.269610][    C1]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   28.372705][   T70] softirqs last disabled at (47202): __fib6_clean_all (./include/linux/spinlock.h:353 net/ipv6/ip6_fib.c:2323)
| [   28.372707][   T70] Preemption disabled at:
| [   28.372708][   T70] vprintk_emit (kernel/printk/printk.c:2471)
| [   28.372719][   T70] Tainted: [W]=WARN
[   28.372720][   T70] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   28.372722][   T70] Workqueue: netns cleanup_net
[   28.372728][   T70] Call Trace:
[   28.372729][   T70]  <TASK>
[   28.372730][   T70]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   28.372736][   T70]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   28.372738][   T70]  __might_resched.cold (kernel/sched/core.c:9234)
[   28.372741][   T70]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   28.372745][   T70]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.372748][   T70]  __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))
[   28.372752][   T70]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   28.372754][   T70]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.372758][   T70]  ? 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)
[   28.372760][   T70]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.372761][   T70]  put_chars (drivers/char/virtio_console.c:1176)
[   28.372763][   T70]  ? desc_read_finalized_seq (kernel/printk/printk_ringbuffer.c:1934)
[   28.372765][   T70]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   28.372767][   T70]  ? console_prepend_replay (kernel/printk/printk.c:3005)
[   28.372769][   T70]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   28.372773][   T70]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   28.372774][   T70]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116)
[   28.372775][   T70]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   28.372777][   T70]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.372779][   T70]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.372780][   T70]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.372782][   T70]  console_emit_next_record (kernel/printk/printk.c:3183)
[   28.372785][   T70]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   28.372787][   T70]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.372788][   T70]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.372790][   T70]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.372792][   T70]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.372794][   T70]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[   28.372795][   T70]  console_flush_one_record (kernel/printk/printk.c:3268)
[   28.372798][   T70]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   28.372800][   T70]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   28.372802][   T70]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.372803][   T70]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   28.372805][   T70]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.372807][   T70]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   28.372808][   T70]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   28.372810][   T70]  ? __rcu_read_lock (kernel/rcu/tree_plugin.h:391 (discriminator 6) kernel/rcu/tree_plugin.h:414 (discriminator 6))
[   28.372812][   T70]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   28.372813][   T70]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   28.372815][   T70]  vprintk_emit (kernel/printk/printk.c:2479)
[   28.372818][   T70]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   28.372819][   T70]  ? process_one_work (kernel/workqueue.c:3387)
[   28.372822][   T70]  ? kthread (kernel/kthread.c:436)
[   28.372824][   T70]  ? ret_from_fork (arch/x86/kernel/process.c:158)
[   28.372826][   T70]  ? ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
[   28.372828][   T70]  _printk (kernel/printk/printk.c:2504)
[   28.372831][   T70]  ? snapshot_read.cold (user.c:?)
[   28.372834][   T70]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   28.372836][   T70]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   28.372838][   T70]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   28.372840][   T70]  ? netdev_notice (net/core/dev.c:13194)
[   28.372842][   T70]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.372843][   T70]  ? __up_read (kernel/locking/rwsem.c:1397 (discriminator 1))
[   28.372845][   T70]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:78)
[   28.372847][   T70]  ? down_write_nested (kernel/locking/rwsem.c:1759)
[   28.372849][   T70]  ? 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)
[   28.372851][   T70]  netif_set_allmulti.cold (net/core/dev.c:9731 (discriminator 3))
[   28.372854][   T70]  dev_set_allmulti (net/core/dev_api.c:315)
[   28.372857][   T70] del_nbp (net/bridge/br_if.c:253 net/bridge/br_if.c:341) bridge
[   28.372870][   T70] br_dev_delete (net/bridge/br_if.c:387) bridge
[   28.372877][   T70] br_net_exit_rtnl (net/bridge/br.c:414) bridge
[   28.372884][   T70]  ops_undo_list (net/core/net_namespace.c:181 net/core/net_namespace.c:249)
[   28.372886][   T70]  ? rtnl_net_dumpid_one (net/core/net_namespace.c:1098)
[   28.372888][   T70]  ? idr_destroy (lib/radix-tree.c:310 lib/radix-tree.c:674 lib/radix-tree.c:1563)
[   28.372891][   T70]  cleanup_net (net/core/net_namespace.c:706)
[   28.372893][   T70]  ? net_passive_dec (./include/linux/llist.h:241)
[   28.372895][   T70]  ? update_load_avg (kernel/sched/fair.c:5864)
[   28.372897][   T70]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.372899][   T70]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.372901][   T70]  process_one_work (kernel/workqueue.c:3387)
[   28.372904][   T70]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   28.372906][   T70]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   28.372908][   T70]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   28.372910][   T70]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   28.372912][   T70]  ? __kthread_parkme (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/kthread.c:272)
[   28.372914][   T70]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   28.372916][   T70]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   28.372917][   T70]  kthread (kernel/kthread.c:436)
[   28.372919][   T70]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   28.372920][   T70]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   28.372922][   T70]  ret_from_fork (arch/x86/kernel/process.c:158)
[   28.372923][   T70]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   28.372925][   T70]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   28.372928][   T70]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   28.372929][   T70]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   29.375809][  T620] softirqs last disabled at (0): 0x0
| [   29.375812][  T620] Preemption disabled at:
| [   29.375813][  T620] vprintk_emit (kernel/printk/printk.c:2471)
| [   29.375827][  T620] Tainted: [W]=WARN
[   29.375828][  T620] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   29.375830][  T620] Call Trace:
[   29.375832][  T620]  <TASK>
[   29.375834][  T620]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   29.375841][  T620]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   29.375843][  T620]  __might_resched.cold (kernel/sched/core.c:9234)
[   29.375848][  T620]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   29.375852][  T620]  ? __asan_memcpy (mm/kasan/shadow.c:106 (discriminator 1))
[   29.375856][  T620]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.375861][  T620]  __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))
[   29.375865][  T620]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   29.375869][  T620]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   29.375874][  T620]  ? 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)
[   29.375876][  T620]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   29.375879][  T620]  put_chars (drivers/char/virtio_console.c:1176)
[   29.375882][  T620]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   29.375885][  T620]  ? console_prepend_replay (kernel/printk/printk.c:3005)
[   29.375889][  T620]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   29.375893][  T620]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   29.375896][  T620]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.375898][  T620]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   29.375902][  T620]  console_emit_next_record (kernel/printk/printk.c:3183)
[   29.375905][  T620]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   29.375908][  T620]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.375910][  T620]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.375913][  T620]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.375915][  T620]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   29.375918][  T620]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[   29.375920][  T620]  console_flush_one_record (kernel/printk/printk.c:3268)
[   29.375924][  T620]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   29.375928][  T620]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   29.375930][  T620]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   29.375933][  T620]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   29.375935][  T620]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.375937][  T620]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   29.375940][  T620]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   29.375942][  T620]  ? __rcu_read_lock (kernel/rcu/tree_plugin.h:391 (discriminator 6) kernel/rcu/tree_plugin.h:414 (discriminator 6))
[   29.375945][  T620]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   29.375947][  T620]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   29.375950][  T620]  vprintk_emit (kernel/printk/printk.c:2479)
[   29.375954][  T620]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   29.375956][  T620]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   29.375960][  T620]  ? netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   29.375964][  T620]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   29.375966][  T620]  ? ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   29.375969][  T620]  ? ___sys_sendmsg (net/socket.c:2767)
[   29.375971][  T620]  ? __sys_sendmsg (net/socket.c:2799)
[   29.375974][  T620]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   29.375978][  T620]  _printk (kernel/printk/printk.c:2504)
[   29.375982][  T620]  ? snapshot_read.cold (user.c:?)
[   29.375986][  T620]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   29.375989][  T620]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   29.375992][  T620]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   29.375995][  T620]  ? netdev_notice (net/core/dev.c:13194)
[   29.375998][  T620]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.376001][  T620]  ? __up_read (kernel/locking/rwsem.c:1397 (discriminator 1))
[   29.376003][  T620]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:78)
[   29.376007][  T620]  ? down_write_nested (kernel/locking/rwsem.c:1759)
[   29.376009][  T620]  ? 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)
[   29.376013][  T620]  netif_set_allmulti.cold (net/core/dev.c:9731 (discriminator 3))
[   29.376017][  T620]  dev_set_allmulti (net/core/dev_api.c:315)
[   29.376021][  T620] del_nbp (net/bridge/br_if.c:253 net/bridge/br_if.c:341) bridge
[   29.376040][  T620]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   29.376044][  T620]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   29.376048][  T620] br_del_if (net/bridge/br_if.c:732) bridge
[   29.376060][  T620]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   29.376064][  T620]  do_set_master (net/core/rtnetlink.c:3055)
[   29.376067][  T620]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   29.376071][  T620]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   29.376074][  T620]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   29.376076][  T620]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.376079][  T620]  ? stack_depot_save_flags (lib/stackdepot.c:609 lib/stackdepot.c:676)
[   29.376084][  T620]  ? kasan_save_stack (mm/kasan/common.c:58)
[   29.376087][  T620]  ? kasan_save_stack (mm/kasan/common.c:57)
[   29.376090][  T620]  ? kasan_save_track (mm/kasan/common.c:78)
[   29.376092][  T620]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   29.376094][  T620]  ? __kmalloc_cache_noprof (./include/linux/kasan.h:263 mm/slub.c:5563)
[   29.376097][  T620]  ? rtnl_newlink (./include/linux/slab.h:991 (discriminator 1) net/core/rtnetlink.c:4113 (discriminator 1))
[   29.376098][  T620]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   29.376100][  T620]  ? netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   29.376102][  T620]  ? netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   29.376104][  T620]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   29.376106][  T620]  ? ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   29.376108][  T620]  ? ___sys_sendmsg (net/socket.c:2767)
[   29.376110][  T620]  ? __sys_sendmsg (net/socket.c:2799)
[   29.376116][  T620]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   29.376118][  T620]  ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   29.376123][  T620]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.376125][  T620]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   29.376127][  T620]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.376130][  T620]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.376132][  T620]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   29.376135][  T620]  ? __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)
[   29.376138][  T620]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   29.376140][  T620]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   29.376143][  T620]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   29.376145][  T620]  ? nla_get_range_signed (lib/nlattr.c:270)
[   29.376148][  T620]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   29.376152][  T620]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   29.376155][  T620]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.376157][  T620]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   29.376159][  T620]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   29.376161][  T620]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.376164][  T620]  ? is_bpf_text_address (./include/linux/rcupdate.h:850 kernel/bpf/core.c:749)
[   29.376167][  T620]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   29.376169][  T620]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   29.376172][  T620]  ? __kernel_text_address (kernel/extable.c:79)
[   29.376174][  T620]  ? write_profile (profile.c:?)
[   29.376175][  T620]  ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380)
[   29.376179][  T620]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.376181][  T620]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.376184][  T620]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   29.376188][  T620]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   29.376190][  T620]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.376193][  T620]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   29.376201][  T620]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   29.376203][  T620]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   29.376205][  T620]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   29.376208][  T620]  ? stack_depot_save_flags (lib/stackdepot.c:609 lib/stackdepot.c:676)
[   29.376211][  T620]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   29.376214][  T620]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   29.376216][  T620]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   29.376218][  T620]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   29.376220][  T620]  ? __netlink_lookup (./include/linux/rcupdate.h:850 ./include/linux/rhashtable.h:709 net/netlink/af_netlink.c:499)
[   29.376224][  T620]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.376226][  T620]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   29.376229][  T620]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   29.376232][  T620]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   29.376235][  T620]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.376237][  T620]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.376240][  T620]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   29.376243][  T620]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   29.376246][  T620]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   29.376249][  T620]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.376252][  T620]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   29.376254][  T620]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   29.376257][  T620]  ? copy_msghdr_from_user (net/socket.c:2650)
[   29.376259][  T620]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   29.376262][  T620]  ? move_addr_to_kernel (net/socket.c:258)
[   29.376264][  T620]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   29.376268][  T620]  ___sys_sendmsg (net/socket.c:2767)
[   29.376270][  T620]  ? copy_msghdr_from_user (net/socket.c:2619)
[   29.376279][  T620]  __sys_sendmsg (net/socket.c:2799)
[   29.376281][  T620]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   29.376286][  T620]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.376289][  T620]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   29.376291][  T620]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   29.376294][  T620]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   29.376296][  T620] RIP: 0033:0x7f2aa1fd254e
[   29.376299][  T620] 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
[   29.376302][  T620] RSP: 002b:00007ffdddbbce70 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   29.376306][  T620] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f2aa1fd254e
[   29.376309][  T620] RDX: 0000000000000000 RSI: 00007ffdddbbcf20 RDI: 0000000000000005
[   29.376310][  T620] RBP: 00007ffdddbbce80 R08: 0000000000000000 R09: 0000000000000000
[   29.376312][  T620] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91835b


Finger prints:
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:console_lock_spinning_enable
__irq_exit_rcu:handle_softirqs:dump_stack_lvl:__kmalloc_noprof:put_chars
__irq_exit_rcu:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print
vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print
__alloc_skb:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars
__fib6_clean_all:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars