Unable to handle kernel paging request at virtual address dfff80000000000e KASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077] Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 [dfff80000000000e] address between user and kernel address ranges Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 4256 Comm: kworker/u5:5 Not tainted 6.1.83-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 Workqueue: hci4 hci_power_on pstate: 00400005 (nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : btintel_read_version+0x90/0x194 drivers/bluetooth/btintel.c:414 lr : btintel_read_version+0x3c/0x194 drivers/bluetooth/btintel.c:407 sp : ffff80001def7420 x29: ffff80001def7420 x28: ffff80001def74c0 x27: ffff80001def7640 x26: 0000000000000000 x25: ffff700003bdee98 x24: ffff0000f0cd5fb8 x23: dfff800000000000 x22: ffff80001def7620 x21: ffff0000f0cd4000 x20: ffff80001def7620 x19: 0000000000000000 x18: 1fffe0003686b776 x17: ffff80001583d000 x16: ffff8000084f9258 x15: 0000000000000000 x14: 0000000000000002 x13: ffff0000c9e65340 x12: 0000000000ff0100 x11: 0000000000ff0100 x10: 0000000000000003 x9 : 000000000000000e x8 : 0000000000000070 x7 : ffff8000082db800 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000006 x1 : 0000000000000031 x0 : 0000000000000000 Call trace: btintel_read_version+0x90/0x194 drivers/bluetooth/btintel.c:414 ag6xx_setup+0x1a4/0xd0c drivers/bluetooth/hci_ag6xx.c:169 hci_uart_setup+0x330/0x7d8 drivers/bluetooth/hci_ldisc.c:423 hci_dev_setup_sync net/bluetooth/hci_sync.c:4678 [inline] hci_dev_init_sync net/bluetooth/hci_sync.c:4748 [inline] hci_dev_open_sync+0x35c/0x3078 net/bluetooth/hci_sync.c:4846 hci_dev_do_open net/bluetooth/hci_core.c:483 [inline] hci_power_on+0x150/0x68c net/bluetooth/hci_core.c:984 process_one_work+0x7ac/0x1404 kernel/workqueue.c:2292 worker_thread+0x8e4/0xfec kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864 Code: f2fbfff7 d343fd09 1200090a 11000d4a (38f76929) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: f2fbfff7 movk x23, #0xdfff, lsl #48 4: d343fd09 lsr x9, x8, #3 8: 1200090a and w10, w8, #0x7 c: 11000d4a add w10, w10, #0x3 * 10: 38f76929 ldrsb w9, [x9, x23] <-- trapping instruction