======================================
| [ 1301.182307][    C0]  #1: ffffffff8eb77d20 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame (./include/linux/rcupdate.h:300 (discriminator 2) ./include/linux/rcupdate.h:838 (discriminator 2) ./include/linux/rcupdate.h:1181 (discriminator 2) arch/x86/kernel/unwind_orc.c:495 (discriminator 2))
| [ 1301.182489][    C0]  #2: ffffffff8eb77c00 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:300 (discriminator 2) kernel/rcu/tree.c:2611 (discriminator 2))
| [ 1301.182734][    C0]
| [ 1301.182734][    C0] stack backtrace:
[ 1301.182864][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1301.182866][    C0] Call Trace:
[ 1301.182867][    C0]  <IRQ>
[ 1301.182869][    C0]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[ 1301.182873][    C0]  print_usage_bug.part.0.cold (kernel/locking/lockdep.c:4042)
[ 1301.182876][    C0]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[ 1301.182880][    C0]  mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4056 kernel/locking/lockdep.c:4267)
[ 1301.182882][    C0]  ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[ 1301.182884][    C0]  ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[ 1301.182886][    C0]  ? save_trace (kernel/locking/lockdep.c:589)
[ 1301.182887][    C0]  ? virtqueue_add_packed_in_order (drivers/virtio/virtio_ring.c:1891)
[ 1301.182894][    C0]  mark_lock (kernel/locking/lockdep.c:4753)
[ 1301.182896][    C0]  mark_usage (kernel/locking/lockdep.c:4642)
[ 1301.182897][    C0]  __lock_acquire (kernel/locking/lockdep.c:5191)
[ 1301.182899][    C0]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[ 1301.182900][    C0]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[ 1301.182903][    C0]  lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[ 1301.182905][    C0]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[ 1301.182907][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[ 1301.182909][    C0]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[ 1301.182911][    C0]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:158 (discriminator 1) kernel/locking/spinlock.c:158 (discriminator 1))
[ 1301.182912][    C0]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[ 1301.182914][    C0] tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[ 1301.182916][    C0]  tcf_action_rcu_free (net/sched/act_api.c:367 net/sched/act_api.c:378)
[ 1301.182917][    C0]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[ 1301.182919][    C0]  rcu_do_batch (kernel/rcu/tree.c:2617)
[ 1301.182921][    C0]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[ 1301.182923][    C0]  ? sched_balance_softirq (kernel/sched/fair.c:13350)
[ 1301.182926][    C0]  ? trace_rcu_batch_end (./include/trace/events/rcu.h:714 (discriminator 19))
[ 1301.182933][    C0]  ? sched_balance_domains (kernel/sched/fair.c:12634)
[ 1301.182935][    C0]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[ 1301.182937][    C0]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[ 1301.182938][    C0]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[ 1301.182940][    C0]  rcu_core (kernel/rcu/tree.c:2869)
[ 1301.182942][    C0]  handle_softirqs (kernel/softirq.c:622)
[ 1301.182944][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[ 1301.182947][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[ 1301.182948][    C0]  ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[ 1301.182951][    C0]  __irq_exit_rcu (kernel/softirq.c:656 kernel/softirq.c:496 kernel/softirq.c:735)
[ 1301.182952][    C0]  irq_exit_rcu (kernel/softirq.c:752)
[ 1301.182954][    C0]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[ 1301.182956][    C0]  </IRQ>
[ 1301.182956][    C0]  <TASK>
[ 1301.182957][    C0]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[ 1301.182959][    C0] RIP: 0010:lock_acquire.part.0 (./arch/x86/include/asm/irqflags.h:158 (discriminator 1) kernel/locking/lockdep.c:5871 (discriminator 1))
[ 1301.182961][    C0] Code: ff 65 0f c1 05 37 d9 33 04 83 f8 01 4c 8b 14 24 0f 85 30 01 00 00 9c 58 f6 c4 02 0f 85 4d 01 00 00 4d 85 d2 0f 85 16 01 00 00 <48> 8b 44 24 30 65 48 2b 05 a9 92 33 04 0f 85 43 01 00 00 48 83 c4
All code
========
   0:	ff 65 0f             	jmp    *0xf(%rbp)
   3:	c1 05 37 d9 33 04 83 	roll   $0x83,0x433d937(%rip)        # 0x433d941
   a:	f8                   	clc
   b:	01 4c 8b 14          	add    %ecx,0x14(%rbx,%rcx,4)
   f:	24 0f                	and    $0xf,%al
  11:	85 30                	test   %esi,(%rax)
  13:	01 00                	add    %eax,(%rax)
  15:	00 9c 58 f6 c4 02 0f 	add    %bl,0xf02c4f6(%rax,%rbx,2)
  1c:	85 4d 01             	test   %ecx,0x1(%rbp)
  1f:	00 00                	add    %al,(%rax)
  21:	4d 85 d2             	test   %r10,%r10
  24:	0f 85 16 01 00 00    	jne    0x140
  2a:*	48 8b 44 24 30       	mov    0x30(%rsp),%rax		<-- trapping instruction
  2f:	65 48 2b 05 a9 92 33 	sub    %gs:0x43392a9(%rip),%rax        # 0x43392e0
  36:	04 
  37:	0f 85 43 01 00 00    	jne    0x180
  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 a9 92 33 	sub    %gs:0x43392a9(%rip),%rax        # 0x43392b6
   c:	04 
   d:	0f 85 43 01 00 00    	jne    0x156
  13:	48                   	rex.W
  14:	83                   	.byte 0x83
  15:	c4                   	.byte 0xc4
[ 1301.182963][    C0] RSP: 0018:ffa00000006c6d00 EFLAGS: 00000206
[ 1301.182965][    C0] RAX: 0000000000000046 RBX: 0000000000000000 RCX: 4a8286ea93efaeeb
[ 1301.182967][    C0] RDX: 0000000000000001 RSI: ffffffff8e5ebde8 RDI: ffffffff8e06f6c0
[ 1301.182968][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ff1100000d608b58
[ 1301.182968][    C0] R10: 0000000000000200 R11: 0000000000000001 R12: ffffffff8eb77d20
[ 1301.182969][    C0] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
[ 1301.182972][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[ 1301.182973][    C0]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[ 1301.182975][    C0]  unwind_next_frame (./include/linux/rcupdate.h:300 (discriminator 2) ./include/linux/rcupdate.h:838 (discriminator 2) ./include/linux/rcupdate.h:1181 (discriminator 2) arch/x86/kernel/unwind_orc.c:495 (discriminator 2))
[ 1301.182977][    C0]  ? unwind_next_frame (./include/linux/rcupdate.h:300 (discriminator 2) ./include/linux/rcupdate.h:838 (discriminator 2) ./include/linux/rcupdate.h:1181 (discriminator 2) arch/x86/kernel/unwind_orc.c:495 (discriminator 2))
[ 1301.182978][    C0]  ? virtio_fs_send_req (fs/fuse/virtio_fs.c:1517)
[ 1301.182980][    C0]  ? mark_usage (kernel/locking/lockdep.c:4674)
[ 1301.182981][    C0]  ? stack_access_ok (./arch/x86/include/asm/stacktrace.h:55)
[ 1301.182983][    C0]  ? __unwind_start (arch/x86/kernel/unwind_orc.c:787)
[ 1301.182985][    C0]  ? write_profile (profile.c:?)
[ 1301.182987][    C0]  arch_stack_walk (arch/x86/kernel/stacktrace.c:25)
[ 1301.182991][    C0]  ? virtio_fs_send_req (fs/fuse/virtio_fs.c:1517)
[ 1301.182993][    C0]  ? virtqueue_add_split (./include/linux/slab.h:954 drivers/virtio/virtio_ring.c:561 drivers/virtio/virtio_ring.c:636)
[ 1301.182995][    C0]  stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[ 1301.182997][    C0]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[ 1301.182999][    C0]  ? virtqueue_add_split (./include/linux/slab.h:954 drivers/virtio/virtio_ring.c:561 drivers/virtio/virtio_ring.c:636)
[ 1301.183001][    C0]  ? __unwind_start (arch/x86/kernel/unwind_orc.c:787)
[ 1301.183002][    C0]  kasan_save_stack (mm/kasan/common.c:57)
[ 1301.183006][    C0]  ? kasan_save_stack (mm/kasan/common.c:57)
[ 1301.183008][    C0]  ? kasan_save_track (mm/kasan/common.c:78)
[ 1301.183009][    C0]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[ 1301.183011][    C0]  ? __kmalloc_noprof (./include/linux/kasan.h:263 mm/slub.c:5296 mm/slub.c:5308)
[ 1301.183014][    C0]  ? virtqueue_add_split (./include/linux/slab.h:954 drivers/virtio/virtio_ring.c:561 drivers/virtio/virtio_ring.c:636)
[ 1301.183015][    C0]  ? virtqueue_add_sgs (drivers/virtio/virtio_ring.c:2796 (discriminator 7) drivers/virtio/virtio_ring.c:2835 (discriminator 7))
[ 1301.183017][    C0]  ? virtio_fs_enqueue_req (fs/fuse/virtio_fs.c:1458)
[ 1301.183018][    C0]  ? virtio_fs_send_req (fs/fuse/virtio_fs.c:1517)
[ 1301.183024][    C0]  kasan_save_track (mm/kasan/common.c:78)
[ 1301.183026][    C0]  __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[ 1301.183028][    C0]  __kmalloc_noprof (./include/linux/kasan.h:263 mm/slub.c:5296 mm/slub.c:5308)
[ 1301.183030][    C0]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[ 1301.183032][    C0]  virtqueue_add_split (./include/linux/slab.h:954 drivers/virtio/virtio_ring.c:561 drivers/virtio/virtio_ring.c:636)
[ 1301.183034][    C0]  ? fuse_request_alloc (fs/fuse/dev.c:142 (discriminator 7))
[ 1301.183036][    C0]  ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[ 1301.183038][    C0]  ? write_profile (profile.c:?)
[ 1301.183039][    C0]  ? __kernel_text_address (kernel/extable.c:79)
[ 1301.183042][    C0]  ? virtqueue_add_packed (drivers/virtio/virtio_ring.c:1677)
[ 1301.183044][    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[ 1301.183046][    C0]  virtqueue_add_sgs (drivers/virtio/virtio_ring.c:2796 (discriminator 7) drivers/virtio/virtio_ring.c:2835 (discriminator 7))
[ 1301.183049][    C0]  virtio_fs_enqueue_req (fs/fuse/virtio_fs.c:1458)
[ 1301.183051][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[ 1301.183052][    C0]  ? ovl_get_link (fs/overlayfs/inode.c:332 (discriminator 1) fs/overlayfs/inode.c:324 (discriminator 1))
[ 1301.183055][    C0]  ? virtio_fs_probe (./include/linux/virtio_config.h:371)
[ 1301.183056][    C0]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4040 (discriminator 3) kernel/rcu/tree.c:4032 (discriminator 3))
[ 1301.183059][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[ 1301.183061][    C0]  ? __create_object (mm/kmemleak.c:785 (discriminator 3))
[ 1301.183063][    C0]  ? trace_kmem_cache_alloc (./include/trace/events/kmem.h:12 (discriminator 22))
[ 1301.183067][    C0]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[ 1301.183069][    C0]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[ 1301.183071][    C0]  virtio_fs_send_req (fs/fuse/virtio_fs.c:1517)
[ 1301.183073][    C0]  __fuse_simple_request (fs/fuse/dev.c:602 fs/fuse/dev.c:699)
[ 1301.183075][    C0]  fuse_readlink_folio (fs/fuse/fuse_i.h:1262 fs/fuse/dir.c:1838)
[ 1301.183077][    C0]  ? fuse_invalidate_attr_mask (fs/fuse/dir.c:307)
[ 1301.183079][    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[ 1301.183082][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[ 1301.183084][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[ 1301.183087][    C0]  fuse_get_link (fs/fuse/dir.c:1877)
[ 1301.183088][    C0]  ovl_get_link (fs/overlayfs/inode.c:332 (discriminator 1) fs/overlayfs/inode.c:324 (discriminator 1))
[ 1301.183090][    C0]  pick_link (fs/namei.c:2064)
[ 1301.183093][    C0]  ? ovl_check_rename_whiteout (fs/overlayfs/ovl_entry.h:105)
[ 1301.183095][    C0]  step_into_slowpath (fs/namei.c:2123)
[ 1301.183097][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[ 1301.183099][    C0]  ? pick_link (fs/namei.c:793 (discriminator 12))
[ 1301.183101][    C0]  ? ovl_dentry_revalidate_common (fs/overlayfs/super.c:150)
[ 1301.183103][    C0]  ? lookup_fast (fs/namei.c:1030 fs/namei.c:1026 fs/namei.c:1876)
[ 1301.183105][    C0]  open_last_lookups (fs/namei.c:2148 fs/namei.c:4646)
[ 1301.183108][    C0]  ? lookup_open.isra.0 (fs/namei.c:4504)
[ 1301.183110][    C0]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[ 1301.183112][    C0]  ? init_file.isra.0 (./include/linux/instrumented.h:97 ./include/linux/atomic/atomic-instrumented.h:3223 ./include/linux/file_ref.h:61 fs/file_table.c:229)
[ 1301.183114][    C0]  path_openat (fs/namei.c:4855)
[ 1301.183116][    C0]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4040 (discriminator 3) kernel/rcu/tree.c:4032 (discriminator 3))
[ 1301.183118][    C0]  ? kernel_tmpfile_open (fs/namei.c:4800)
[ 1301.183120][    C0]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[ 1301.183121][    C0]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4040 (discriminator 3) kernel/rcu/tree.c:4032 (discriminator 3))
[ 1301.183123][    C0]  do_file_open (fs/namei.c:4887)
[ 1301.183125][    C0]  ? path_openat (./include/linux/mount.h:68 (discriminator 3))
[ 1301.183129][    C0]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[ 1301.183131][    C0]  ? _raw_spin_unlock (./include/linux/spinlock_api_smp.h:169 (discriminator 1) kernel/locking/spinlock.c:190 (discriminator 1))
[ 1301.183132][    C0]  ? alloc_fd (./include/linux/spinlock.h:390 fs/file.c:611)
[ 1301.183135][    C0]  do_sys_openat2 (fs/open.c:1364 (discriminator 5))
[ 1301.183138][    C0]  ? build_open_flags (fs/open.c:1212)
[ 1301.183141][    C0]  __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[ 1301.183143][    C0]  ? __ia32_sys_open (fs/open.c:1374)
[ 1301.183145][    C0]  ? fpregs_restore_userregs (./include/linux/instrumented.h:97 ./include/asm-generic/bitops/instrumented-atomic.h:41 ./include/linux/thread_info.h:109 arch/x86/kernel/fpu/context.h:79)
[ 1301.183147][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[ 1301.183149][    C0]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[ 1301.183152][    C0]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[ 1301.183153][    C0]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[ 1301.183155][    C0]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[ 1301.183156][    C0]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[ 1301.183158][    C0] RIP: 0033:0x7f519c00b625
[ 1301.183160][    C0] Code: 48 89 e5 48 89 55 e0 41 83 e2 40 75 28 89 f2 f7 d2 81 e2 00 00 41 00 74 1c 89 f2 bf 9c ff ff ff 48 89 c6 b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 23 5d c3 90 48 8d 4d 10 c7 45 b8 10 00 00 00
All code
========
   0:	48 89 e5             	mov    %rsp,%rbp
   3:	48 89 55 e0          	mov    %rdx,-0x20(%rbp)
   7:	41 83 e2 40          	and    $0x40,%r10d
   b:	75 28                	jne    0x35
   d:	89 f2                	mov    %esi,%edx
   f:	f7 d2                	not    %edx
  11:	81 e2 00 00 41 00    	and    $0x410000,%edx
  17:	74 1c                	je     0x35
  19:	89 f2                	mov    %esi,%edx
  1b:	bf 9c ff ff ff       	mov    $0xffffff9c,%edi
  20:	48 89 c6             	mov    %rax,%rsi
  23:	b8 01 01 00 00       	mov    $0x101,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 23                	ja     0x55
  32:	5d                   	pop    %rbp
  33:	c3                   	ret
  34:	90                   	nop
  35:	48 8d 4d 10          	lea    0x10(%rbp),%rcx
  39:	c7 45 b8 10 00 00 00 	movl   $0x10,-0x48(%rbp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 23                	ja     0x2b
   8:	5d                   	pop    %rbp
   9:	c3                   	ret
   a:	90                   	nop
   b:	48 8d 4d 10          	lea    0x10(%rbp),%rcx
   f:	c7 45 b8 10 00 00 00 	movl   $0x10,-0x48(%rbp)
[ 1301.183161][    C0] RSP: 002b:00007ffcb1994ed0 EFLAGS: 00000206 ORIG_RAX: 0000000000000101
[ 1301.183163][    C0] RAX: ffffffffffffffda RBX: 00007ffcb1995160 RCX: 00007f519c00b625
[ 1301.183164][    C0] RDX: 0000000000080000 RSI: 00007ffcb1994f50 RDI: 00000000ffffff9c
[ 1301.183164][    C0] RBP: 00007ffcb1994ed0 R08: 00007ffcb1995147 R09: 0000000000000000
[ 1301.183165][    C0] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffcb1994f50


Finger prints:
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock