Unable to handle kernel paging request at virtual address dfff80000000000b KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f] 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 [dfff80000000000b] address between user and kernel address ranges Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 5957 Comm: syz-executor Not tainted 6.1.133-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 pstate: 00400005 (nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : klist_put lib/klist.c:212 [inline] pc : klist_del lib/klist.c:230 [inline] pc : klist_remove+0x190/0x38c lib/klist.c:249 lr : spin_unlock include/linux/spinlock.h:391 [inline] lr : klist_remove+0x16c/0x38c lib/klist.c:247 sp : ffff8000216776a0 x29: ffff800021677750 x28: 1fffe0001a208959 x27: 1fffe0001b3da8d8 x26: ffff0000fb529bc0 x25: dfff800000000000 x24: ffff7000042ceed4 x23: ffff8000184bc3e8 x22: 1fffe0001e0ebf0c x21: 0000000000000000 x20: ffff8000216776c0 x19: ffff0000f075f860 x18: ffff8000216773a0 x17: ffff800018c59000 x16: ffff80000825c040 x15: ffff800018739f80 x14: 0000000045755597 x13: dfff800000000000 x12: 0000000000000001 x11: 0000000000000001 x10: 0000000000000000 x9 : 1fffe0001f6a5379 x8 : 000000000000000b x7 : 0000000000000000 x6 : 0000000000000000 x5 : ffff800018ff3ed8 x4 : 0000000000000008 x3 : ffff80000831b478 x2 : 0000000000000001 x1 : 0000000000000001 x0 : 0000000000000058 Call trace: klist_put lib/klist.c:212 [inline] klist_del lib/klist.c:230 [inline] klist_remove+0x190/0x38c lib/klist.c:249 device_move+0x17c/0x5c8 drivers/base/core.c:4633 hci_conn_del_sysfs+0xa0/0x154 net/bluetooth/hci_sysfs.c:73 hci_conn_cleanup+0x4dc/0x69c net/bluetooth/hci_conn.c:172 hci_conn_del+0x3cc/0x5a8 net/bluetooth/hci_conn.c:1151 hci_conn_hash_flush+0x1e4/0x27c net/bluetooth/hci_conn.c:2510 hci_dev_close_sync+0x7e0/0xf1c net/bluetooth/hci_sync.c:5178 hci_dev_do_close net/bluetooth/hci_core.c:510 [inline] hci_unregister_dev+0x200/0x4c4 net/bluetooth/hci_core.c:2707 vhci_release+0x7c/0xcc drivers/bluetooth/hci_vhci.c:573 __fput+0x1c8/0x7c8 fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x240/0x2f0 kernel/task_work.c:203 exit_task_work include/linux/task_work.h:39 [inline] do_exit+0x550/0x1a84 kernel/exit.c:871 do_group_exit+0x194/0x22c kernel/exit.c:1021 __do_sys_exit_group kernel/exit.c:1032 [inline] __se_sys_exit_group kernel/exit.c:1030 [inline] __wake_up_parent+0x0/0x60 kernel/exit.c:1030 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Code: f9400268 927ff915 910162a0 d343fc08 (38796908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: f9400268 ldr x8, [x19] 4: 927ff915 and x21, x8, #0xfffffffffffffffe 8: 910162a0 add x0, x21, #0x58 c: d343fc08 lsr x8, x0, #3 * 10: 38796908 ldrb w8, [x8, x25] <-- trapping instruction