Bluetooth: hci0: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci0: Injecting HCI hardware error event Bluetooth: hci0: hardware error 0x00 Unable to handle kernel paging request at virtual address dfff80000000000f KASAN: null-ptr-deref in range [0x0000000000000078-0x000000000000007f] 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 [dfff80000000000f] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 6102 Comm: kworker/u5:2 Not tainted 6.7.0-rc6-syzkaller-00090-gaafe7ad77b91 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 Workqueue: hci0 hci_error_reset pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : generic_test_bit include/asm-generic/bitops/generic-non-atomic.h:128 [inline] pc : ida_free+0x16c/0x378 lib/idr.c:511 lr : xa_is_value include/linux/xarray.h:81 [inline] lr : ida_free+0x158/0x378 lib/idr.c:500 sp : ffff8000970278c0 x29: ffff800097027970 x28: 1ffff00012219344 x27: 1ffff00012e04f1c x26: dfff800000000000 x25: ffff700012e04f18 x24: 0000000000000078 x23: 00000000000003ff x22: 0000000000000000 x21: 0000000000000000 x20: 000000000000ffff x19: ffff8000970278e0 x18: ffff800097027560 x17: 0000000000018839 x16: ffff80008051bee8 x15: ffff700012e04efc x14: 1ffff00012e04efc x13: 0000000000000004 x12: ffffffffffffffff x11: ffff700012e04efc x10: 0000000000ff0100 x9 : 0000000000000000 x8 : 000000000000000f x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000020 x4 : 0000000000000000 x3 : ffff80008032faa0 x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: generic_test_bit include/asm-generic/bitops/generic-non-atomic.h:128 [inline] ida_free+0x16c/0x378 lib/idr.c:511 hci_conn_cleanup net/bluetooth/hci_conn.c:157 [inline] hci_conn_del+0x650/0xb0c net/bluetooth/hci_conn.c:1182 hci_conn_hash_flush+0x184/0x220 net/bluetooth/hci_conn.c:2615 hci_dev_close_sync+0x7e0/0xf30 net/bluetooth/hci_sync.c:5021 hci_dev_do_close net/bluetooth/hci_core.c:554 [inline] hci_error_reset+0xf4/0x248 net/bluetooth/hci_core.c:1059 process_one_work+0x694/0x1204 kernel/workqueue.c:2627 process_scheduled_works kernel/workqueue.c:2700 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:2781 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:857 Code: d343fee8 927d0d08 8b0802d8 d343ff08 (387a6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: d343fee8 lsr x8, x23, #3 4: 927d0d08 and x8, x8, #0x78 8: 8b0802d8 add x24, x22, x8 c: d343ff08 lsr x8, x24, #3 * 10: 387a6908 ldrb w8, [x8, x26] <-- trapping instruction