------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(1) WARNING: CPU: 0 PID: 1692 at kernel/locking/lockdep.c:232 check_wait_context kernel/locking/lockdep.c:4773 [inline] WARNING: CPU: 0 PID: 1692 at kernel/locking/lockdep.c:232 __lock_acquire+0x78c/0x763c kernel/locking/lockdep.c:5087 Modules linked in: CPU: 0 PID: 1692 Comm: kworker/0:2 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: events rfkill_op_handler pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : check_wait_context kernel/locking/lockdep.c:4773 [inline] pc : __lock_acquire+0x78c/0x763c kernel/locking/lockdep.c:5087 lr : hlock_class kernel/locking/lockdep.c:232 [inline] lr : check_wait_context kernel/locking/lockdep.c:4773 [inline] lr : __lock_acquire+0x780/0x763c kernel/locking/lockdep.c:5087 sp : ffff80009adc7320 x29: ffff80009adc75e0 x28: ffff0000caf9da00 x27: ffff0000caf9e540 x26: 1fffe000195f3ca8 x25: ffff0000caf9e458 x24: 0000000000000001 x23: 0000000000000005 x22: 0000000000000d6d x21: ffff8000922364e8 x20: 0000000000000000 x19: ffff0000caf9e544 x18: ffff80009adc7440 x17: 0000000000000000 x16: ffff80008ad6b09c x15: 0000000000000001 x14: 1fffe00036800002 x13: 0000000000000000 x12: dfff800000000000 x11: 0000000000000002 x10: 0000000000ff0100 x9 : 959b21ca79dbfc00 x8 : 0000000000000000 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80009adc6c18 x4 : ffff80008ed822c0 x3 : ffff8000805ba130 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: check_wait_context kernel/locking/lockdep.c:4773 [inline] __lock_acquire+0x78c/0x763c kernel/locking/lockdep.c:5087 lock_acquire+0x23c/0x71c kernel/locking/lockdep.c:5754 __flush_workqueue+0x14c/0x11c4 kernel/workqueue.c:3146 nci_close_device+0x140/0x5b8 net/nfc/nci/core.c:567 nci_dev_down+0x40/0x54 net/nfc/nci/core.c:639 nfc_dev_down net/nfc/core.c:161 [inline] nfc_rfkill_set_block+0x14c/0x2d0 net/nfc/core.c:179 rfkill_set_block+0x18c/0x37c net/rfkill/core.c:346 rfkill_epo+0x8c/0x158 net/rfkill/core.c:466 __rfkill_handle_global_op net/rfkill/input.c:60 [inline] rfkill_op_handler+0x170/0x288 net/rfkill/input.c:108 process_one_work+0x694/0x1204 kernel/workqueue.c:2633 process_scheduled_works kernel/workqueue.c:2706 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:2787 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 irq event stamp: 546623 hardirqs last enabled at (546623): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1397 [inline] hardirqs last enabled at (546623): [] finish_lock_switch+0xbc/0x1e4 kernel/sched/core.c:5154 hardirqs last disabled at (546622): [] __schedule+0x2bc/0x24b4 kernel/sched/core.c:6625 softirqs last enabled at (546512): [] softirq_handle_end kernel/softirq.c:399 [inline] softirqs last enabled at (546512): [] __do_softirq+0xac8/0xce4 kernel/softirq.c:582 softirqs last disabled at (546373): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 ---[ end trace 0000000000000000 ]--- Unable to handle kernel paging request at virtual address dfff800000000018 KASAN: null-ptr-deref in range [0x00000000000000c0-0x00000000000000c7] Mem abort info: ESR = 0x0000000096000005 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x05: level 1 translation fault Data abort info: ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [dfff800000000018] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 1692 Comm: kworker/0:2 Tainted: G W 6.8.0-rc7-syzkaller-g707081b61156 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: events rfkill_op_handler pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : check_wait_context kernel/locking/lockdep.c:4773 [inline] pc : __lock_acquire+0x568/0x763c kernel/locking/lockdep.c:5087 lr : hlock_class kernel/locking/lockdep.c:232 [inline] lr : check_wait_context kernel/locking/lockdep.c:4773 [inline] lr : __lock_acquire+0x780/0x763c kernel/locking/lockdep.c:5087 sp : ffff80009adc7320 x29: ffff80009adc75e0 x28: ffff0000caf9da00 x27: ffff0000caf9e540 x26: 1fffe000195f3ca8 x25: ffff0000caf9e458 x24: 0000000000000001 x23: 0000000000000005 x22: 0000000000000d6d x21: ffff8000922364e8 x20: 0000000000000000 x19: 00000000000000c4 x18: ffff80009adc7440 x17: 0000000000000000 x16: ffff80008ad6b09c x15: 0000000000000001 x14: 1fffe00036800002 x13: 0000000000000000 x12: dfff800000000000 x11: 0000000000000002 x10: 0000000000ff0100 x9 : 959b21ca79dbfc00 x8 : 0000000000000018 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80009adc6c18 x4 : ffff80008ed822c0 x3 : ffff8000805ba130 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: check_wait_context kernel/locking/lockdep.c:4773 [inline] __lock_acquire+0x568/0x763c kernel/locking/lockdep.c:5087 lock_acquire+0x23c/0x71c kernel/locking/lockdep.c:5754 __flush_workqueue+0x14c/0x11c4 kernel/workqueue.c:3146 nci_close_device+0x140/0x5b8 net/nfc/nci/core.c:567 nci_dev_down+0x40/0x54 net/nfc/nci/core.c:639 nfc_dev_down net/nfc/core.c:161 [inline] nfc_rfkill_set_block+0x14c/0x2d0 net/nfc/core.c:179 rfkill_set_block+0x18c/0x37c net/rfkill/core.c:346 rfkill_epo+0x8c/0x158 net/rfkill/core.c:466 __rfkill_handle_global_op net/rfkill/input.c:60 [inline] rfkill_op_handler+0x170/0x288 net/rfkill/input.c:108 process_one_work+0x694/0x1204 kernel/workqueue.c:2633 process_scheduled_works kernel/workqueue.c:2706 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:2787 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 Code: 34000ee8 aa1f03e8 91031113 d343fe68 (38ec6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 34000ee8 cbz w8, 0x1dc 4: aa1f03e8 mov x8, xzr 8: 91031113 add x19, x8, #0xc4 c: d343fe68 lsr x8, x19, #3 * 10: 38ec6908 ldrsb w8, [x8, x12] <-- trapping instruction