BUG: spinlock bad magic on CPU#0, kbnepd bnep0/7377
 lock: 0xffff0000d923d708, .magic: ffff8000, .owner: hþCÓiz8h/-1860567040, .owner_cpu: -1965222728
CPU: 0 PID: 7377 Comm: kbnepd bnep0 Not tainted 6.9.0-rc4-syzkaller-g6a71d2909427 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114
 dump_stack+0x1c/0x28 lib/dump_stack.c:123
 spin_dump kernel/locking/spinlock_debug.c:70 [inline]
 spin_bug+0x124/0x240 kernel/locking/spinlock_debug.c:78
 debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline]
 do_raw_spin_lock+0x1f0/0x348 kernel/locking/spinlock_debug.c:115
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:120 [inline]
 _raw_spin_lock_irq+0x60/0x70 kernel/locking/spinlock.c:170
 spin_lock_irq include/linux/spinlock.h:376 [inline]
 pm_runtime_set_memalloc_noio+0x114/0x210 drivers/base/power/runtime.c:228
 netdev_unregister_kobject+0x148/0x208 net/core/net-sysfs.c:2106
 unregister_netdevice_many_notify+0x117c/0x1770 net/core/dev.c:11129
 unregister_netdevice_many net/core/dev.c:11157 [inline]
 unregister_netdevice_queue net/core/dev.c:11036 [inline]
 unregister_netdevice include/linux/netdevice.h:3115 [inline]
 unregister_netdev+0x180/0x1f8 net/core/dev.c:11175
 bnep_session+0x23bc/0x257c net/bluetooth/bnep/core.c:525
 kthread+0x288/0x310 kernel/kthread.c:388
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in kernel/locking/qspinlock.c:131:9
index 8229 is out of range for type 'unsigned long[8]'
CPU: 0 PID: 7377 Comm: kbnepd bnep0 Not tainted 6.9.0-rc4-syzkaller-g6a71d2909427 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114
 dump_stack+0x1c/0x28 lib/dump_stack.c:123
 ubsan_epilogue lib/ubsan.c:217 [inline]
 __ubsan_handle_out_of_bounds+0xf8/0x148 lib/ubsan.c:415
 decode_tail kernel/locking/qspinlock.c:131 [inline]
 queued_spin_lock_slowpath+0x984/0xd38 kernel/locking/qspinlock.c:471
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock+0x320/0x348 kernel/locking/spinlock_debug.c:116
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:120 [inline]
 _raw_spin_lock_irq+0x60/0x70 kernel/locking/spinlock.c:170
 spin_lock_irq include/linux/spinlock.h:376 [inline]
 pm_runtime_set_memalloc_noio+0x114/0x210 drivers/base/power/runtime.c:228
 netdev_unregister_kobject+0x148/0x208 net/core/net-sysfs.c:2106
 unregister_netdevice_many_notify+0x117c/0x1770 net/core/dev.c:11129
 unregister_netdevice_many net/core/dev.c:11157 [inline]
 unregister_netdevice_queue net/core/dev.c:11036 [inline]
 unregister_netdevice include/linux/netdevice.h:3115 [inline]
 unregister_netdev+0x180/0x1f8 net/core/dev.c:11175
 bnep_session+0x23bc/0x257c net/bluetooth/bnep/core.c:525
 kthread+0x288/0x310 kernel/kthread.c:388
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
---[ end trace ]---
Unable to handle kernel paging request at virtual address ffff80008ede8afc
KASAN: probably user-memory-access in range [0x0000000476f457e0-0x0000000476f457e7]
Mem abort info:
  ESR = 0x0000000096000047
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x07: level 3 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000047, ISS2 = 0x00000000
  CM = 0, WnR = 1, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000001ad5bd000
[ffff80008ede8afc] pgd=0000000000000000, p4d=10000001b26f7003, pud=10000001b26f8003, pmd=10000001b26fc003, pte=0000000000000000
Internal error: Oops: 0000000096000047 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 7377 Comm: kbnepd bnep0 Not tainted 6.9.0-rc4-syzkaller-g6a71d2909427 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
pstate: 804010c5 (Nzcv daIF +PAN -UAO -TCO -DIT +SSBS BTYPE=--)
pc : queued_spin_lock_slowpath+0x3d4/0xd38 kernel/locking/qspinlock.c:474
lr : decode_tail kernel/locking/qspinlock.c:131 [inline]
lr : queued_spin_lock_slowpath+0x984/0xd38 kernel/locking/qspinlock.c:471
sp : ffff80009e8c7680
x29: ffff80009e8c7720 x28: 000000000000809b x27: 1ffff00013d18edc
x26: dfff800000000000 x25: 1fffe0001b247ae1 x24: 0000000000040000
x23: ffff0001b3de1ac8 x22: ffff80008ede8afc x21: ffff0001b3de1ac0
x20: 1fffe000367bc358 x19: ffff0000d923d708 x18: 0000000000000008
x17: 0000000000000000 x16: ffff80008ae725bc x15: ffff7000124347f0
x14: 1ffff000124347f0 x13: 0000000000000004 x12: ffffffffffffffff
x11: ffff7000124347f0 x10: ffff80008ede8ac0 x9 : 0000000000000003
x8 : 0000000000000000 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80009e8c6db8 x4 : ffff80008ef650a0 x3 : ffff8000801ce878
x2 : 0000000000000001 x1 : 0000000000000004 x0 : ffff0001b3de1ac8
Call trace:
 queued_spin_lock_slowpath+0x3d4/0xd38 kernel/locking/qspinlock.c:477
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock+0x320/0x348 kernel/locking/spinlock_debug.c:116
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:120 [inline]
 _raw_spin_lock_irq+0x60/0x70 kernel/locking/spinlock.c:170
 spin_lock_irq include/linux/spinlock.h:376 [inline]
 pm_runtime_set_memalloc_noio+0x114/0x210 drivers/base/power/runtime.c:228
 netdev_unregister_kobject+0x148/0x208 net/core/net-sysfs.c:2106
 unregister_netdevice_many_notify+0x117c/0x1770 net/core/dev.c:11129
 unregister_netdevice_many net/core/dev.c:11157 [inline]
 unregister_netdevice_queue net/core/dev.c:11036 [inline]
 unregister_netdevice include/linux/netdevice.h:3115 [inline]
 unregister_netdev+0x180/0x1f8 net/core/dev.c:11175
 bnep_session+0x23bc/0x257c net/bluetooth/bnep/core.c:525
 kthread+0x288/0x310 kernel/kthread.c:388
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
Code: aa1603e0 973edfc5 aa1703e0 52800081 (f90002d5) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	aa1603e0 	mov	x0, x22
   4:	973edfc5 	bl	0xfffffffffcfb7f18
   8:	aa1703e0 	mov	x0, x23
   c:	52800081 	mov	w1, #0x4                   	// #4
* 10:	f90002d5 	str	x21, [x22] <-- trapping instruction