BUG: spinlock bad magic on CPU#0, kbnepd bnep0/13924 lock: 0xffff88806854d708, .magic: ffffffff, .owner: t_bit, nbits)/1651864367, .owner_cpu: 0 CPU: 0 PID: 13924 Comm: kbnepd bnep0 Not tainted 6.9.0-rc4-next-20240418-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline] do_raw_spin_lock+0x209/0x370 kernel/locking/spinlock_debug.c:115 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:120 [inline] _raw_spin_lock_irq+0xdf/0x120 kernel/locking/spinlock.c:170 spin_lock_irq include/linux/spinlock.h:376 [inline] pm_runtime_set_memalloc_noio+0x13d/0x260 drivers/base/power/runtime.c:228 netdev_unregister_kobject+0x178/0x250 net/core/net-sysfs.c:2106 unregister_netdevice_many_notify+0x11dd/0x16e0 net/core/dev.c:11208 unregister_netdevice_many net/core/dev.c:11236 [inline] unregister_netdevice_queue+0x303/0x370 net/core/dev.c:11115 unregister_netdevice include/linux/netdevice.h:3118 [inline] unregister_netdev+0x1c/0x30 net/core/dev.c:11254 bnep_session+0x2e09/0x3000 net/bluetooth/bnep/core.c:525 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 ------------[ cut here ]------------ UBSAN: array-index-out-of-bounds in kernel/locking/qspinlock.c:131:9 index 9394 is out of range for type 'unsigned long[8]' CPU: 0 PID: 13924 Comm: kbnepd bnep0 Not tainted 6.9.0-rc4-next-20240418-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 ubsan_epilogue lib/ubsan.c:231 [inline] __ubsan_handle_out_of_bounds+0x121/0x150 lib/ubsan.c:429 decode_tail kernel/locking/qspinlock.c:131 [inline] __pv_queued_spin_lock_slowpath+0xd5a/0xdc0 kernel/locking/qspinlock.c:468 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:584 [inline] queued_spin_lock_slowpath+0x42/0x50 arch/x86/include/asm/qspinlock.h:51 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x272/0x370 kernel/locking/spinlock_debug.c:116 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:120 [inline] _raw_spin_lock_irq+0xdf/0x120 kernel/locking/spinlock.c:170 spin_lock_irq include/linux/spinlock.h:376 [inline] pm_runtime_set_memalloc_noio+0x13d/0x260 drivers/base/power/runtime.c:228 netdev_unregister_kobject+0x178/0x250 net/core/net-sysfs.c:2106 unregister_netdevice_many_notify+0x11dd/0x16e0 net/core/dev.c:11208 unregister_netdevice_many net/core/dev.c:11236 [inline] unregister_netdevice_queue+0x303/0x370 net/core/dev.c:11115 unregister_netdevice include/linux/netdevice.h:3118 [inline] unregister_netdev+0x1c/0x30 net/core/dev.c:11254 bnep_session+0x2e09/0x3000 net/bluetooth/bnep/core.c:525 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 ---[ end trace ]---