======================================
| [  375.783953][ T5840] ==================================================================
| [ 375.784245][ T5840] BUG: KASAN: use-after-free in page_pool_item_uninit (net/core/page_pool.c:523)
| [  375.784497][ T5840] Read of size 8 at addr ffff88800240f008 by task tc-mq-visibilit/5840
| [  375.784742][ T5840]
[  375.785112][ T5840] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  375.785319][ T5840] Call Trace:
[  375.785444][ T5840]  <TASK>
[ 375.785529][ T5840] dump_stack_lvl (lib/dump_stack.c:123)
[ 375.785707][ T5840] print_address_description.constprop.0 (mm/kasan/report.c:379)
[ 375.785946][ T5840] ? page_pool_item_uninit (net/core/page_pool.c:523)
[ 375.786112][ T5840] print_report (mm/kasan/report.c:490)
[ 375.786290][ T5840] ? kasan_addr_to_slab (./include/linux/mm.h:1295 mm/kasan/../slab.h:211 mm/kasan/common.c:38)
[ 375.786459][ T5840] kasan_report (mm/kasan/report.c:604)
[ 375.786582][ T5840] ? page_pool_item_uninit (net/core/page_pool.c:523)
[ 375.786751][ T5840] page_pool_item_uninit (net/core/page_pool.c:523)
[ 375.786917][ T5840] page_pool_release (net/core/page_pool.c:1431 net/core/page_pool.c:1484)
[ 375.787080][ T5840] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:383)
[ 375.787284][ T5840] ? __pfx_page_pool_release (net/core/page_pool.c:1478)
[ 375.787445][ T5840] ? napi_disable (./arch/x86/include/asm/bitops.h:75 ./include/asm-generic/bitops/instrumented-atomic.h:42 net/core/dev.c:6832)
[ 375.787610][ T5840] page_pool_destroy (net/core/page_pool.c:1555)
[ 375.787772][ T5840] nsim_stop (drivers/net/netdevsim/netdev.c:469 drivers/net/netdevsim/netdev.c:483) netdevsim
[ 375.787958][ T5840] __dev_close_many (net/core/dev.c:1591)
[ 375.788122][ T5840] ? __pfx___dev_close_many (net/core/dev.c:1555)
[ 375.788285][ T5840] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860)
[ 375.788449][ T5840] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228)
[ 375.788610][ T5840] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3))
[ 375.788732][ T5840] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228)
[ 375.788896][ T5840] dev_close_many (net/core/dev.c:1618)
[ 375.789060][ T5840] ? __pfx_dev_close_many (net/core/dev.c:1608)
[ 375.789227][ T5840] unregister_netdevice_many_notify (net/core/dev.c:11562)
[ 375.789433][ T5840] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:104)
[ 375.789598][ T5840] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:79)
[ 375.789801][ T5840] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11529)
[ 375.790006][ T5840] ? lock_acquire (kernel/locking/lockdep.c:5822)
[ 375.790175][ T5840] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:595 kernel/locking/mutex.c:735)
[ 375.790339][ T5840] ? nsim_destroy (drivers/net/netdevsim/netdev.c:827) netdevsim
[ 375.790516][ T5840] ? __pfx___mutex_lock (kernel/locking/mutex.c:734)
[ 375.790678][ T5840] unregister_netdevice_queue (net/core/dev.c:11524)
[ 375.790843][ T5840] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114)
[ 375.791011][ T5840] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11513)
[ 375.791220][ T5840] nsim_destroy (drivers/net/netdevsim/netdev.c:832 (discriminator 2)) netdevsim
[ 375.791400][ T5840] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:426 drivers/net/netdevsim/dev.c:1429) netdevsim
[ 375.791612][ T5840] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1438 drivers/net/netdevsim/dev.c:1661) netdevsim
[ 375.791827][ T5840] nsim_drv_remove (drivers/net/netdevsim/dev.c:1678) netdevsim
[ 375.792006][ T5840] device_release_driver_internal (drivers/base/dd.c:1275 drivers/base/dd.c:1296)
[ 375.792210][ T5840] ? klist_put (lib/klist.c:220)
[ 375.792334][ T5840] bus_remove_device (./include/linux/kobject.h:193 drivers/base/base.h:73 drivers/base/bus.c:583)
[ 375.792508][ T5840] device_del (drivers/base/core.c:3855)
[ 375.792640][ T5840] ? __pfx_device_del (drivers/base/core.c:3809)
[ 375.792811][ T5840] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5851)
[ 375.792983][ T5840] ? kernfs_fop_write_iter (fs/kernfs/file.c:326)
[ 375.793151][ T5840] device_unregister (drivers/base/core.c:3772 drivers/base/core.c:3896)
[ 375.793322][ T5840] del_device_store (drivers/net/netdevsim/bus.c:230) netdevsim
[ 375.793542][ T5840] ? __pfx_del_device_store (drivers/net/netdevsim/bus.c:197) netdevsim
[ 375.793756][ T5840] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132)
[ 375.793921][ T5840] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1))
[ 375.794089][ T5840] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132)
[ 375.794254][ T5840] kernfs_fop_write_iter (fs/kernfs/file.c:334)
[ 375.794416][ T5840] vfs_write (fs/read_write.c:586 fs/read_write.c:679)
[ 375.794541][ T5840] ? __pfx_vfs_write (fs/read_write.c:660)
[ 375.794704][ T5840] ? __lock_release (kernel/locking/lockdep.c:5525)
[ 375.794869][ T5840] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1340)
[ 375.795046][ T5840] ? __pfx___up_read (kernel/locking/rwsem.c:1337)
[ 375.795209][ T5840] ksys_write (fs/read_write.c:731)
[ 375.795335][ T5840] ? __pfx_ksys_write (fs/read_write.c:721)
[ 375.795496][ T5840] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1340)
[ 375.795662][ T5840] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)
[ 375.795824][ T5840] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  375.796058][ T5840] RIP: 0033:0x7f7255ce0b77
[ 375.796232][ T5840] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  375.796803][ T5840] RSP: 002b:00007ffe1ddb6388 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  375.797057][ T5840] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f7255ce0b77
[  375.797304][ T5840] RDX: 0000000000000004 RSI: 000055f06265f070 RDI: 0000000000000001
[  375.797545][ T5840] RBP: 000055f06265f070 R08: 0000000000000003 R09: 0000000000000000
[  375.797785][ T5840] R10: 0000000000000100 R11: 0000000000000246 R12: 0000000000000004
[  375.798032][ T5840] R13: 00007f7255d9c760 R14: 0000000000000004 R15: 00007f7255d979c0
| [  375.802154][ T5840] Disabling lock debugging due to kernel taint
| [  375.802481][ T5840] Oops: general protection fault, probably for non-canonical address 0xf99995999999999c: 0000 [#1] PREEMPT SMP KASAN NOPTI
| [  375.802882][ T5840] KASAN: maybe wild-memory-access in range [0xcccccccccccccce0-0xcccccccccccccce7]
| [  375.803588][ T5840] Tainted: [B]=BAD_PAGE
[  375.803708][ T5840] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 375.804017][ T5840] RIP: 0010:page_pool_item_uninit (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/linux/refcount.h:136 net/core/page_pool.c:524)
[ 375.804229][ T5840] Code: 95 48 bb 00 00 00 00 00 fc ff df 48 c1 ed 03 48 01 dd 4d 8d 75 1c be 04 00 00 00 4c 89 f7 e8 dd 9c 69 fe 4c 89 f0 48 c1 e8 03 <0f> b6 14 18 4c 89 f0 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 62 41
All code
========
   0:	95                   	xchg   %eax,%ebp
   1:	48 bb 00 00 00 00 00 	movabs $0xdffffc0000000000,%rbx
   8:	fc ff df 
   b:	48 c1 ed 03          	shr    $0x3,%rbp
   f:	48 01 dd             	add    %rbx,%rbp
  12:	4d 8d 75 1c          	lea    0x1c(%r13),%r14
  16:	be 04 00 00 00       	mov    $0x4,%esi
  1b:	4c 89 f7             	mov    %r14,%rdi
  1e:	e8 dd 9c 69 fe       	call   0xfffffffffe699d00
  23:	4c 89 f0             	mov    %r14,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
  2a:*	0f b6 14 18          	movzbl (%rax,%rbx,1),%edx		<-- trapping instruction
  2e:	4c 89 f0             	mov    %r14,%rax
  31:	83 e0 07             	and    $0x7,%eax
  34:	83 c0 03             	add    $0x3,%eax
  37:	38 d0                	cmp    %dl,%al
  39:	7c 04                	jl     0x3f
  3b:	84 d2                	test   %dl,%dl
  3d:	75 62                	jne    0xa1
  3f:	41                   	rex.B

Code starting with the faulting instruction
===========================================
   0:	0f b6 14 18          	movzbl (%rax,%rbx,1),%edx
   4:	4c 89 f0             	mov    %r14,%rax
   7:	83 e0 07             	and    $0x7,%eax
   a:	83 c0 03             	add    $0x3,%eax
   d:	38 d0                	cmp    %dl,%al
   f:	7c 04                	jl     0x15
  11:	84 d2                	test   %dl,%dl
  13:	75 62                	jne    0x77
  15:	41                   	rex.B
[  375.804887][ T5840] RSP: 0018:ffffc90000b174f0 EFLAGS: 00010a06
[  375.805086][ T5840] RAX: 199999999999999c RBX: dffffc0000000000 RCX: ffffffff94029ac3
[  375.805333][ T5840] RDX: 0000000000000000 RSI: 0000000000000004 RDI: cccccccccccccce0
[  375.805665][ T5840] RBP: fffffbfff2a98a78 R08: 0000000000000000 R09: fffffbfff2e5a088
[  375.805901][ T5840] R10: ffffffff972d0447 R11: 205d303438355420 R12: ffff88800ef8b620
[  375.806238][ T5840] R13: ccccccccccccccc4 R14: cccccccccccccce0 R15: 0000000000000000
[  375.806497][ T5840] FS:  00007f7255b9f740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  375.806802][ T5840] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  375.807002][ T5840] CR2: 000055f062660078 CR3: 0000000005276006 CR4: 0000000000772ef0
[  375.807239][ T5840] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  375.807471][ T5840] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  375.807712][ T5840] PKRU: 55555554
[  375.807834][ T5840] Call Trace:
[  375.807954][ T5840]  <TASK>
[ 375.808038][ T5840] ? die_addr (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:460)
[ 375.808164][ T5840] ? exc_general_protection (arch/x86/kernel/traps.c:751 arch/x86/kernel/traps.c:693)
[ 375.808327][ T5840] ? asm_exc_general_protection (./arch/x86/include/asm/idtentry.h:617)
[ 375.808488][ T5840] ? page_pool_item_uninit (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/linux/refcount.h:136 net/core/page_pool.c:524)
[ 375.808649][ T5840] ? page_pool_item_uninit (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/linux/refcount.h:136 net/core/page_pool.c:524)
[ 375.808805][ T5840] page_pool_release (net/core/page_pool.c:1431 net/core/page_pool.c:1484)
[ 375.808966][ T5840] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:383)
[ 375.809163][ T5840] ? __pfx_page_pool_release (net/core/page_pool.c:1478)
[ 375.809327][ T5840] ? napi_disable (./arch/x86/include/asm/bitops.h:75 ./include/asm-generic/bitops/instrumented-atomic.h:42 net/core/dev.c:6832)
[ 375.809488][ T5840] page_pool_destroy (net/core/page_pool.c:1555)
[ 375.809648][ T5840] nsim_stop (drivers/net/netdevsim/netdev.c:469 drivers/net/netdevsim/netdev.c:483) netdevsim
[ 375.809825][ T5840] __dev_close_many (net/core/dev.c:1591)
[ 375.809979][ T5840] ? __pfx___dev_close_many (net/core/dev.c:1555)
[ 375.810137][ T5840] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860)
[ 375.810297][ T5840] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228)
[ 375.810456][ T5840] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3))
[ 375.810577][ T5840] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228)
[ 375.810831][ T5840] dev_close_many (net/core/dev.c:1618)
[ 375.810989][ T5840] ? __pfx_dev_close_many (net/core/dev.c:1608)
[ 375.811155][ T5840] unregister_netdevice_many_notify (net/core/dev.c:11562)
[ 375.811351][ T5840] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:104)
[ 375.811604][ T5840] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:79)
[ 375.811803][ T5840] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11529)
[ 375.811994][ T5840] ? lock_acquire (kernel/locking/lockdep.c:5822)
[ 375.812149][ T5840] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:595 kernel/locking/mutex.c:735)
[ 375.812405][ T5840] ? nsim_destroy (drivers/net/netdevsim/netdev.c:827) netdevsim
[ 375.812588][ T5840] ? __pfx___mutex_lock (kernel/locking/mutex.c:734)
[ 375.812744][ T5840] unregister_netdevice_queue (net/core/dev.c:11524)
[ 375.812901][ T5840] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114)
[ 375.813153][ T5840] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11513)
[ 375.813352][ T5840] nsim_destroy (drivers/net/netdevsim/netdev.c:832 (discriminator 2)) netdevsim
[ 375.813518][ T5840] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:426 drivers/net/netdevsim/dev.c:1429) netdevsim
[ 375.813825][ T5840] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1438 drivers/net/netdevsim/dev.c:1661) netdevsim
[ 375.814035][ T5840] nsim_drv_remove (drivers/net/netdevsim/dev.c:1678) netdevsim
[ 375.814202][ T5840] device_release_driver_internal (drivers/base/dd.c:1275 drivers/base/dd.c:1296)
[ 375.814405][ T5840] ? klist_put (lib/klist.c:220)
[ 375.814619][ T5840] bus_remove_device (./include/linux/kobject.h:193 drivers/base/base.h:73 drivers/base/bus.c:583)
[ 375.814777][ T5840] device_del (drivers/base/core.c:3855)
[ 375.814899][ T5840] ? __pfx_device_del (drivers/base/core.c:3809)
[ 375.815062][ T5840] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5851)
[ 375.815315][ T5840] ? kernfs_fop_write_iter (fs/kernfs/file.c:326)
[ 375.815473][ T5840] device_unregister (drivers/base/core.c:3772 drivers/base/core.c:3896)
[ 375.815628][ T5840] del_device_store (drivers/net/netdevsim/bus.c:230) netdevsim
[ 375.815859][ T5840] ? __pfx_del_device_store (drivers/net/netdevsim/bus.c:197) netdevsim
[ 375.816172][ T5840] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132)
[ 375.816336][ T5840] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1))
[ 375.816492][ T5840] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132)
[ 375.816648][ T5840] kernfs_fop_write_iter (fs/kernfs/file.c:334)
[ 375.816899][ T5840] vfs_write (fs/read_write.c:586 fs/read_write.c:679)
[ 375.817018][ T5840] ? __pfx_vfs_write (fs/read_write.c:660)
[ 375.817178][ T5840] ? __lock_release (kernel/locking/lockdep.c:5525)
[ 375.817332][ T5840] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1340)
[ 375.817584][ T5840] ? __pfx___up_read (kernel/locking/rwsem.c:1337)
[ 375.817748][ T5840] ksys_write (fs/read_write.c:731)
[ 375.817864][ T5840] ? __pfx_ksys_write (fs/read_write.c:721)
[ 375.818020][ T5840] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1340)
[ 375.818278][ T5840] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)
[ 375.818438][ T5840] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  375.818632][ T5840] RIP: 0033:0x7f7255ce0b77
[ 375.818796][ T5840] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  375.819456][ T5840] RSP: 002b:00007ffe1ddb6388 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  375.819794][ T5840] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f7255ce0b77
[  375.820038][ T5840] RDX: 0000000000000004 RSI: 000055f06265f070 RDI: 0000000000000001
[  375.820277][ T5840] RBP: 000055f06265f070 R08: 0000000000000003 R09: 0000000000000000
[  375.820615][ T5840] R10: 0000000000000100 R11: 0000000000000246 R12: 0000000000000004


Finger prints:
print_report:kasan_report:page_pool_item_uninit:page_pool_release:page_pool_destroy
page_pool_item_uninit:page_pool_release:page_pool_destroy:nsim_stop:__dev_close_many