======================================
| [ 14.997283][ C2] #5: ffffffffb1d745a0 (rcu_read_lock){....}-{1:3}, at: page_ref_add_unless.constprop.0 (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 ./include/linux/page_ref.h:235) 
| [ 14.997648][ C2] #6: ffffffffb1d74480 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   14.997970][    C2]
| [   14.997970][    C2] stack backtrace:
[   14.998202][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.998204][    C2] Call Trace:
[   14.998205][    C2]  <IRQ>
[ 14.998207][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.998212][ C2] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 14.998217][ C2] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 14.998222][ C2] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 14.998226][ C2] ? save_trace (kernel/locking/lockdep.c:594) 
[ 14.998230][ C2] mark_lock (kernel/locking/lockdep.c:4754) 
[ 14.998234][ C2] mark_usage (kernel/locking/lockdep.c:4643) 
[ 14.998238][ C2] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 14.998243][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 14.998247][ C2] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.998251][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 14.998256][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 14.998259][ C2] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.998263][ C2] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 14.998266][ C2] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.998269][ C2] simple_pin_fs (fs/libfs.c:1066) 
[ 14.998273][ C2] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 14.998276][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 14.998281][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 14.998284][ C2] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 14.998290][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.998293][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 14.998296][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 14.998298][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 14.998302][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.998306][ C2] ? page_ref_add_unless.constprop.0 (./include/linux/atomic/atomic-arch-fallback.h:2429 ./include/linux/atomic/atomic-arch-fallback.h:2456 ./include/linux/atomic/atomic-instrumented.h:1518 ./include/linux/page_ref.h:238) 
[ 14.998309][ C2] ? next_uptodate_folio (mm/filemap.c:3563) 
[ 14.998311][ C2] ? filemap_map_pages (mm/filemap.c:3746) 
[ 14.998314][ C2] ? do_fault_around (mm/memory.c:5476) 
[ 14.998317][ C2] ? do_pte_missing (mm/memory.c:5509 mm/memory.c:5652 mm/memory.c:4160) 
[ 14.998320][ C2] ? handle_pte_fault (mm/memory.c:5997) 
[ 14.998324][ C2] ? __handle_mm_fault (mm/memory.c:6140) 
[ 14.998327][ C2] ? handle_mm_fault (mm/memory.c:6321) 
[ 14.998332][ C2] __put_net (net/core/net_namespace.c:732) 
[ 14.998336][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 14.998339][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.998342][ C2] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.998346][ C2] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 14.998349][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 14.998353][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4326) 
[ 14.998356][ C2] ? note_gp_changes (kernel/rcu/tree.c:1324 (discriminator 1)) 
[ 14.998359][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 14.998364][ C2] rcu_core (kernel/rcu/tree.c:2826) 
[ 14.998367][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 14.998372][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 14.998374][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 14.998376][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   14.998380][    C2]  </IRQ>
[   14.998381][    C2]  <TASK>
[ 14.998382][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.998385][ C2] RIP: 0010:page_ref_add_unless.constprop.0 (./include/linux/atomic/atomic-arch-fallback.h:2429 ./include/linux/atomic/atomic-arch-fallback.h:2456 ./include/linux/atomic/atomic-instrumented.h:1518 ./include/linux/page_ref.h:238) 
[ 14.998389][ C2] Code: 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 14 02 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 cb 01 00 00 8b 45 34 <85> c0 0f 84 02 01 00 00 8d 50 01 f0 0f b1 13 41 0f 94 c4 45 84 e4
All code
========
   0:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   7:	fc ff df 
   a:	48 c1 ea 03          	shr    $0x3,%rdx
   e:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
  12:	48 89 d8             	mov    %rbx,%rax
  15:	83 e0 07             	and    $0x7,%eax
  18:	83 c0 03             	add    $0x3,%eax
  1b:	38 d0                	cmp    %dl,%al
  1d:	7c 08                	jl     0x27
  1f:	84 d2                	test   %dl,%dl
  21:	0f 85 cb 01 00 00    	jne    0x1f2
  27:	8b 45 34             	mov    0x34(%rbp),%eax
  2a:*	85 c0                	test   %eax,%eax		<-- trapping instruction
  2c:	0f 84 02 01 00 00    	je     0x134
  32:	8d 50 01             	lea    0x1(%rax),%edx
  35:	f0 0f b1 13          	lock cmpxchg %edx,(%rbx)
  39:	41 0f 94 c4          	sete   %r12b
  3d:	45 84 e4             	test   %r12b,%r12b

Code starting with the faulting instruction
===========================================
   0:	85 c0                	test   %eax,%eax
   2:	0f 84 02 01 00 00    	je     0x10a
   8:	8d 50 01             	lea    0x1(%rax),%edx
   b:	f0 0f b1 13          	lock cmpxchg %edx,(%rbx)
   f:	41 0f 94 c4          	sete   %r12b
  13:	45 84 e4             	test   %r12b,%r12b
[   14.998392][    C2] RSP: 0000:ffffc90000707998 EFLAGS: 00000246
[   14.998395][    C2] RAX: 0000000000000002 RBX: ffffea0000331234 RCX: ffffffffaeaf9043
[   14.998397][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffea0000331234
[   14.998398][    C2] RBP: ffffea0000331200 R08: 0000000000000001 R09: fffff94000066246
[   14.998400][    C2] R10: ffffea0000331237 R11: ffffffffb1d745a0 R12: dffffc0000000000
[   14.998402][    C2] R13: ffffea0000331200 R14: 1ffff920000e0f5f R15: ffffc90000707af8
[ 14.998406][ C2] ? page_ref_add_unless.constprop.0 (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-arch-fallback.h:2426 ./include/linux/atomic/atomic-arch-fallback.h:2456 ./include/linux/atomic/atomic-instrumented.h:1518 ./include/linux/page_ref.h:238) 
[ 14.998410][ C2] ? page_ref_add_unless.constprop.0 (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-arch-fallback.h:2426 ./include/linux/atomic/atomic-arch-fallback.h:2456 ./include/linux/atomic/atomic-instrumented.h:1518 ./include/linux/page_ref.h:238) 
[ 14.998413][ C2] next_uptodate_folio (mm/filemap.c:3563) 
[ 14.998417][ C2] filemap_map_pages (mm/filemap.c:3746) 
[ 14.998425][ C2] ? __pfx_filemap_map_pages (mm/filemap.c:3692) 
[ 14.998430][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 14.998433][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 14.998436][ C2] ? do_fault_around (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 mm/memory.c:5475) 
[ 14.998440][ C2] ? __pfx_filemap_map_pages (mm/filemap.c:3692) 
[ 14.998443][ C2] do_fault_around (mm/memory.c:5476) 
[ 14.998447][ C2] do_pte_missing (mm/memory.c:5509 mm/memory.c:5652 mm/memory.c:4160) 
[ 14.998450][ C2] ? rcu_read_unlock (./include/linux/rcupdate.h:341 (discriminator 9) ./include/linux/rcupdate.h:871 (discriminator 9)) 
[ 14.998454][ C2] handle_pte_fault (mm/memory.c:5997) 
[ 14.998458][ C2] ? __pfx_handle_pte_fault (mm/memory.c:5954) 
[ 14.998462][ C2] ? reacquire_held_locks (kernel/locking/lockdep.c:5383) 
[ 14.998465][ C2] ? do_user_addr_fault (arch/x86/mm/fault.c:1328) 
[ 14.998470][ C2] __handle_mm_fault (mm/memory.c:6140) 
[ 14.998474][ C2] ? __pfx___handle_mm_fault (mm/memory.c:6049) 
[ 14.998477][ C2] ? __lock_release (kernel/locking/lockdep.c:5580) 
[ 14.998483][ C2] ? __pfx_lock_vma_under_rcu (mm/memory.c:6547) 
[ 14.998488][ C2] handle_mm_fault (mm/memory.c:6321) 
[ 14.998492][ C2] ? __pfx_handle_mm_fault (mm/memory.c:6276) 
[ 14.998495][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1488 arch/x86/mm/fault.c:1538) 
[ 14.998498][ C2] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 14.998503][ C2] do_user_addr_fault (arch/x86/mm/fault.c:1338) 
[ 14.998507][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 14.998511][ C2] exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1488 arch/x86/mm/fault.c:1538) 
[ 14.998515][ C2] asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:623) 
[   14.998517][    C2] RIP: 0033:0x55a4b27cfac0
[ 14.998523][ C2] Code: Unable to access opcode bytes at 0x55a4b27cfa96.

Code starting with the faulting instruction
===========================================
[   14.998525][    C2] RSP: 002b:00007ffd8274bc58 EFLAGS: 00010246
[   14.998527][    C2] RAX: 000000000000000c RBX: 000055a4d5824a50 RCX: 000055a4b2835b3d
[   14.998529][    C2] RDX: 000055a4b2835b31 RSI: 000055a4d580b4d9 RDI: 000055a4d580b4d0
[   14.998530][    C2] RBP: 00007ffd8274bcf0 R08: 0000000000000000 R09: 0000000000000020
[   14.998532][    C2] R10: 000000008c2e5f44 R11: 74d50067157dbaa2 R12: 0000000000000000
[   14.998534][    C2] R13: 0000000000000001 R14: 000055a4d580b4d0 R15: 000055a4b2863780
| [   15.019256][    C2] RCU nest depth: 4, expected: 0
| [   15.019440][    C2] INFO: lockdep is turned off.
| [   15.019624][    C2] Preemption disabled at:
| [ 15.019625][ C2] 0x0 
[   15.019961][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.019962][    C2] Call Trace:
[   15.019963][    C2]  <IRQ>
[ 15.019965][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.019972][ C2] __might_resched (kernel/sched/core.c:8819) 
[ 15.019978][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 15.019981][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 15.019983][ C2] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 15.019988][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.019994][ C2] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 15.019998][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 15.020001][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 15.020005][ C2] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 15.020009][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 15.020012][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 15.020016][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 15.020019][ C2] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 15.020024][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.020028][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 15.020031][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.020034][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 15.020038][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.020042][ C2] ? page_ref_add_unless.constprop.0 (./include/linux/atomic/atomic-arch-fallback.h:2429 ./include/linux/atomic/atomic-arch-fallback.h:2456 ./include/linux/atomic/atomic-instrumented.h:1518 ./include/linux/page_ref.h:238) 
[ 15.020047][ C2] ? next_uptodate_folio (mm/filemap.c:3563) 
[ 15.020049][ C2] ? filemap_map_pages (mm/filemap.c:3746) 
[ 15.020052][ C2] ? do_fault_around (mm/memory.c:5476) 
[ 15.020056][ C2] ? do_pte_missing (mm/memory.c:5509 mm/memory.c:5652 mm/memory.c:4160) 
[ 15.020059][ C2] ? handle_pte_fault (mm/memory.c:5997) 
[ 15.020062][ C2] ? __handle_mm_fault (mm/memory.c:6140) 
[ 15.020065][ C2] ? handle_mm_fault (mm/memory.c:6321) 
[ 15.020071][ C2] __put_net (net/core/net_namespace.c:732) 
[ 15.020074][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 15.020078][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.020081][ C2] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.020085][ C2] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 15.020089][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 15.020093][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4326) 
[ 15.020097][ C2] ? note_gp_changes (kernel/rcu/tree.c:1324 (discriminator 1)) 
[ 15.020100][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 15.020105][ C2] rcu_core (kernel/rcu/tree.c:2826) 
[ 15.020108][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 15.020112][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.020114][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.020116][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   15.020120][    C2]  </IRQ>
[   15.020121][    C2]  <TASK>
[ 15.020122][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.020125][ C2] RIP: 0010:page_ref_add_unless.constprop.0 (./include/linux/atomic/atomic-arch-fallback.h:2429 ./include/linux/atomic/atomic-arch-fallback.h:2456 ./include/linux/atomic/atomic-instrumented.h:1518 ./include/linux/page_ref.h:238) 
[ 15.020128][ C2] Code: 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 14 02 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 cb 01 00 00 8b 45 34 <85> c0 0f 84 02 01 00 00 8d 50 01 f0 0f b1 13 41 0f 94 c4 45 84 e4
All code
========
   0:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   7:	fc ff df 
   a:	48 c1 ea 03          	shr    $0x3,%rdx
   e:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
  12:	48 89 d8             	mov    %rbx,%rax
  15:	83 e0 07             	and    $0x7,%eax
  18:	83 c0 03             	add    $0x3,%eax
  1b:	38 d0                	cmp    %dl,%al
  1d:	7c 08                	jl     0x27
  1f:	84 d2                	test   %dl,%dl
  21:	0f 85 cb 01 00 00    	jne    0x1f2
  27:	8b 45 34             	mov    0x34(%rbp),%eax
  2a:*	85 c0                	test   %eax,%eax		<-- trapping instruction
  2c:	0f 84 02 01 00 00    	je     0x134
  32:	8d 50 01             	lea    0x1(%rax),%edx
  35:	f0 0f b1 13          	lock cmpxchg %edx,(%rbx)
  39:	41 0f 94 c4          	sete   %r12b
  3d:	45 84 e4             	test   %r12b,%r12b

Code starting with the faulting instruction
===========================================
   0:	85 c0                	test   %eax,%eax
   2:	0f 84 02 01 00 00    	je     0x10a
   8:	8d 50 01             	lea    0x1(%rax),%edx
   b:	f0 0f b1 13          	lock cmpxchg %edx,(%rbx)
   f:	41 0f 94 c4          	sete   %r12b
  13:	45 84 e4             	test   %r12b,%r12b
[   15.020131][    C2] RSP: 0000:ffffc90000707998 EFLAGS: 00000246
[   15.020134][    C2] RAX: 0000000000000002 RBX: ffffea0000331234 RCX: ffffffffaeaf9043
[   15.020136][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffea0000331234
[   15.020138][    C2] RBP: ffffea0000331200 R08: 0000000000000001 R09: fffff94000066246
[   15.020140][    C2] R10: ffffea0000331237 R11: ffffffffb1d745a0 R12: dffffc0000000000
[   15.020144][    C2] R13: ffffea0000331200 R14: 1ffff920000e0f5f R15: ffffc90000707af8
[ 15.020147][ C2] ? page_ref_add_unless.constprop.0 (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-arch-fallback.h:2426 ./include/linux/atomic/atomic-arch-fallback.h:2456 ./include/linux/atomic/atomic-instrumented.h:1518 ./include/linux/page_ref.h:238) 
[ 15.020152][ C2] ? page_ref_add_unless.constprop.0 (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-arch-fallback.h:2426 ./include/linux/atomic/atomic-arch-fallback.h:2456 ./include/linux/atomic/atomic-instrumented.h:1518 ./include/linux/page_ref.h:238) 
[ 15.020155][ C2] next_uptodate_folio (mm/filemap.c:3563) 
[ 15.020159][ C2] filemap_map_pages (mm/filemap.c:3746) 
[ 15.020167][ C2] ? __pfx_filemap_map_pages (mm/filemap.c:3692) 
[ 15.020172][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.020175][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 15.020178][ C2] ? do_fault_around (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 mm/memory.c:5475) 
[ 15.020182][ C2] ? __pfx_filemap_map_pages (mm/filemap.c:3692) 
[ 15.020185][ C2] do_fault_around (mm/memory.c:5476) 
[ 15.020189][ C2] do_pte_missing (mm/memory.c:5509 mm/memory.c:5652 mm/memory.c:4160) 
[ 15.020193][ C2] ? rcu_read_unlock (./include/linux/rcupdate.h:341 (discriminator 9) ./include/linux/rcupdate.h:871 (discriminator 9)) 
[ 15.020196][ C2] handle_pte_fault (mm/memory.c:5997) 
[ 15.020201][ C2] ? __pfx_handle_pte_fault (mm/memory.c:5954) 
[ 15.020204][ C2] ? reacquire_held_locks (kernel/locking/lockdep.c:5383) 
[ 15.020208][ C2] ? do_user_addr_fault (arch/x86/mm/fault.c:1328) 
[ 15.020213][ C2] __handle_mm_fault (mm/memory.c:6140) 
[ 15.020217][ C2] ? __pfx___handle_mm_fault (mm/memory.c:6049) 
[ 15.020220][ C2] ? __lock_release (kernel/locking/lockdep.c:5580) 
[ 15.020228][ C2] ? __pfx_lock_vma_under_rcu (mm/memory.c:6547) 
[ 15.020232][ C2] handle_mm_fault (mm/memory.c:6321) 
[ 15.020236][ C2] ? __pfx_handle_mm_fault (mm/memory.c:6276) 
[ 15.020239][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1488 arch/x86/mm/fault.c:1538) 
[ 15.020242][ C2] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 15.020247][ C2] do_user_addr_fault (arch/x86/mm/fault.c:1338) 
[ 15.020251][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.020255][ C2] exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1488 arch/x86/mm/fault.c:1538) 
[ 15.020259][ C2] asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:623) 
[   15.020261][    C2] RIP: 0033:0x55a4b27cfac0
[ 15.020266][ C2] Code: Unable to access opcode bytes at 0x55a4b27cfa96.

Code starting with the faulting instruction
===========================================
[   15.020267][    C2] RSP: 002b:00007ffd8274bc58 EFLAGS: 00010246
[   15.020269][    C2] RAX: 000000000000000c RBX: 000055a4d5824a50 RCX: 000055a4b2835b3d
[   15.020271][    C2] RDX: 000055a4b2835b31 RSI: 000055a4d580b4d9 RDI: 000055a4d580b4d0
[   15.020272][    C2] RBP: 00007ffd8274bcf0 R08: 0000000000000000 R09: 0000000000000020
[   15.020274][    C2] R10: 000000008c2e5f44 R11: 74d50067157dbaa2 R12: 0000000000000000
[   15.020275][    C2] R13: 0000000000000001 R14: 000055a4d580b4d0 R15: 000055a4b2863780
| [   17.146883][    C3] INFO: lockdep is turned off.
| [   17.147084][    C3] Preemption disabled at:
| [ 17.147086][ C3] 0x0 
| [   17.147457][    C3] Tainted: [W]=WARN
[   17.147458][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.147460][    C3] Call Trace:
[   17.147462][    C3]  <IRQ>
[ 17.147464][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.147472][ C3] __might_resched (kernel/sched/core.c:8819) 
[ 17.147478][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 17.147482][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 17.147484][ C3] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 17.147489][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.147495][ C3] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 17.147499][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 17.147502][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 17.147507][ C3] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 17.147511][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 17.147513][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 17.147518][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 17.147521][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 17.147527][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.147531][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 17.147534][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.147537][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 17.147542][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.147545][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.147548][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 17.147552][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5879) 
[ 17.147556][ C3] ? folio_mark_accessed (mm/swap.c:378 mm/swap.c:476 mm/swap.c:449) 
[ 17.147561][ C3] ? zap_present_ptes.constprop.0 (mm/memory.c:1510 mm/memory.c:1586) 
[ 17.147566][ C3] ? zap_pte_range (mm/memory.c:1733) 
[ 17.147569][ C3] ? zap_p4d_range (mm/memory.c:1824 mm/memory.c:1852 mm/memory.c:1873) 
[ 17.147572][ C3] ? unmap_page_range (mm/memory.c:1894) 
[ 17.147575][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 17.147579][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.147583][ C3] __put_net (net/core/net_namespace.c:732) 
[ 17.147586][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 17.147590][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.147593][ C3] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.147598][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 17.147602][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.147605][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 17.147611][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 17.147614][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 17.147619][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.147621][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.147623][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   17.147627][    C3]  </IRQ>
[   17.147628][    C3]  <TASK>
[ 17.147629][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.147632][ C3] RIP: 0010:rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.147636][ C3] Code: 89 c5 83 f8 3f 0f 87 82 00 00 00 48 8d 3c ed c0 ed 8d b1 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 5c <48> 03 1c ed c0 ed 8d b1 48 b8 00 00 00 00 00 fc ff df 48 89 da 48
All code
========
   0:	89 c5                	mov    %eax,%ebp
   2:	83 f8 3f             	cmp    $0x3f,%eax
   5:	0f 87 82 00 00 00    	ja     0x8d
   b:	48 8d 3c ed c0 ed 8d 	lea    -0x4e721240(,%rbp,8),%rdi
  12:	b1 
  13:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  1a:	fc ff df 
  1d:	48 89 fa             	mov    %rdi,%rdx
  20:	48 c1 ea 03          	shr    $0x3,%rdx
  24:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  28:	75 5c                	jne    0x86
  2a:*	48 03 1c ed c0 ed 8d 	add    -0x4e721240(,%rbp,8),%rbx		<-- trapping instruction
  31:	b1 
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	48 89 da             	mov    %rbx,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 03 1c ed c0 ed 8d 	add    -0x4e721240(,%rbp,8),%rbx
   7:	b1 
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	48 89 da             	mov    %rbx,%rdx
  15:	48                   	rex.W
[   17.147638][    C3] RSP: 0018:ffffc900007c7778 EFLAGS: 00000246
[   17.147642][    C3] RAX: dffffc0000000000 RBX: ffffffffb371a3d0 RCX: dffffc0000000000
[   17.147644][    C3] RDX: 1ffffffff631bdbb RSI: ffffffffb1050c60 RDI: ffffffffb18dedd8
[   17.147646][    C3] RBP: 0000000000000003 R08: 0000000000000001 R09: 0000000000000000
[   17.147647][    C3] R10: ffffffffaeb3125f R11: dffffc0000000000 R12: ffffffffaeb31492
[   17.147649][    C3] R13: 0000000000000000 R14: ffff8880361b3460 R15: 0000000000000000
[ 17.147652][ C3] ? folio_mark_accessed (./include/linux/local_lock_internal.h:54 mm/swap.c:378 mm/swap.c:476 mm/swap.c:449) 
[ 17.147655][ C3] ? folio_mark_accessed (./include/linux/local_lock_internal.h:38 mm/swap.c:356 mm/swap.c:476 mm/swap.c:449) 
[ 17.147661][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.147664][ C3] trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 17.147667][ C3] lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5879) 
[ 17.147671][ C3] folio_mark_accessed (mm/swap.c:378 mm/swap.c:476 mm/swap.c:449) 
[ 17.147674][ C3] ? folio_remove_rmap_ptes (mm/internal.h:1024 mm/rmap.c:1787 mm/rmap.c:1804) 
[ 17.147679][ C3] zap_present_ptes.constprop.0 (mm/memory.c:1510 mm/memory.c:1586) 
[ 17.147685][ C3] zap_pte_range (mm/memory.c:1733) 
[ 17.147691][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 17.147694][ C3] ? __pfx_zap_pte_range (mm/memory.c:1701) 
[ 17.147700][ C3] ? mas_next_node (lib/maple_tree.c:800 lib/maple_tree.c:833 lib/maple_tree.c:4599) 
[ 17.147707][ C3] zap_p4d_range (mm/memory.c:1824 mm/memory.c:1852 mm/memory.c:1873) 
[ 17.147713][ C3] unmap_page_range (mm/memory.c:1894) 
[ 17.147717][ C3] unmap_vmas (./include/linux/hugetlb_inline.h:11 ./include/linux/hugetlb.h:261 mm/memory.c:1986) 
[ 17.147722][ C3] ? __pfx_unmap_vmas (mm/memory.c:1969) 
[ 17.147725][ C3] ? __pfx_free_ldt_pgtables (arch/x86/kernel/ldt.c:394) 
[ 17.147729][ C3] ? mtree_range_walk (lib/maple_tree.c:800 lib/maple_tree.c:2787) 
[ 17.147733][ C3] ? mas_next_slot (lib/maple_tree.c:800 lib/maple_tree.c:4712) 
[ 17.147740][ C3] exit_mmap (./arch/x86/include/asm/jump_label.h:36 ./include/linux/mmap_lock.h:41 ./include/linux/mmap_lock.h:210 mm/mmap.c:1285) 
[ 17.147744][ C3] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 17.147748][ C3] ? __pfx_exit_mmap (mm/mmap.c:1259) 
[ 17.147751][ C3] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:727 kernel/locking/mutex.c:746) 
[ 17.147755][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5879) 
[ 17.147758][ C3] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:924) 
[ 17.147768][ C3] mmput (kernel/fork.c:1446 kernel/fork.c:1381 kernel/fork.c:1401) 
[ 17.147773][ C3] exit_mm (kernel/exit.c:590) 
[ 17.147778][ C3] do_exit (kernel/exit.c:943) 
[ 17.147781][ C3] do_group_exit (kernel/exit.c:1083) 
[ 17.147785][ C3] __x64_sys_exit_group (kernel/exit.c:1111) 
[ 17.147788][ C3] x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 17.147793][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 17.147797][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   17.147800][    C3] RIP: 0033:0x7f5b3fa64abd
[ 17.147802][ C3] Code: Unable to access opcode bytes at 0x7f5b3fa64a93.

Code starting with the faulting instruction
===========================================
[   17.147803][    C3] RSP: 002b:00007ffd7a8f7ff8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   17.147806][    C3] RAX: ffffffffffffffda RBX: 00007f5b3fb419c0 RCX: 00007f5b3fa64abd
[   17.147808][    C3] RDX: 00000000000000e7 RSI: ffffffffffffff80 RDI: 0000000000000000
[   17.147810][    C3] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000030
[   17.147811][    C3] R10: 00007ffd7a8f7e80 R11: 0000000000000246 R12: 00007f5b3fb419c0


Finger prints:
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock
__might_resched:down_write:simple_recursive_removal:debugfs_remove:ref_tracker_dir_exit