Unable to handle kernel paging request at virtual address dfff80000000000b KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f] 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 [dfff80000000000b] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] SMP Modules linked in: CPU: 1 UID: 0 PID: 7175 Comm: syz.2.95 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 03400005 (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+0x12c/0x334 lib/klist.c:249 lr : spin_unlock include/linux/spinlock.h:391 [inline] lr : klist_remove+0x108/0x334 lib/klist.c:247 sp : ffff8000a3ac7380 x29: ffff8000a3ac7410 x28: 1ffff00012538770 x27: 1fffe0001a9b0ce2 x26: dfff800000000000 x25: ffff0000cc8b1ec0 x24: dfff800000000000 x23: ffff700014758e70 x22: ffff800092bc3780 x21: 1fffe0001a30820c x20: 0000000000000000 x19: ffff0000d1841060 x18: 00000000ffffffff x17: ffff800093305000 x16: ffff800080536230 x15: 0000000000000001 x14: 1ffff000125786f4 x13: 0000000000000000 x12: 0000000000000000 x11: ffff7000125786f5 x10: 0000000000000001 x9 : dfff800000000000 x8 : 000000000000000b x7 : ffff80008ad77b38 x6 : 0000000000000000 x5 : ffff8000935c6120 x4 : 0000000000000008 x3 : ffff800080536338 x2 : 0000000000000001 x1 : 0000000000000001 x0 : 0000000000000058 Call trace: klist_put lib/klist.c:212 [inline] (P) klist_del lib/klist.c:230 [inline] (P) klist_remove+0x12c/0x334 lib/klist.c:249 (P) device_move+0x16c/0x5b0 drivers/base/core.c:4615 hci_conn_del_sysfs+0xb4/0x170 net/bluetooth/hci_sysfs.c:75 hci_conn_cleanup net/bluetooth/hci_conn.c:173 [inline] hci_conn_del+0xa40/0xf3c net/bluetooth/hci_conn.c:1210 hci_conn_hash_flush+0x17c/0x218 net/bluetooth/hci_conn.c:2603 hci_dev_close_sync+0x89c/0x1154 net/bluetooth/hci_sync.c:5303 hci_dev_do_close net/bluetooth/hci_core.c:501 [inline] hci_unregister_dev+0x204/0x4c0 net/bluetooth/hci_core.c:2715 vhci_release+0x12c/0x17c drivers/bluetooth/hci_vhci.c:690 __fput+0x340/0x75c fs/file_table.c:468 ____fput+0x20/0x58 fs/file_table.c:496 task_work_run+0x1dc/0x260 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x524/0x1a14 kernel/exit.c:966 do_group_exit+0x194/0x22c kernel/exit.c:1107 get_signal+0x11dc/0x12f8 kernel/signal.c:3034 arch_do_signal_or_restart+0x274/0x4414 arch/arm64/kernel/signal.c:1619 exit_to_user_mode_loop+0x7c/0x178 kernel/entry/common.c:40 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline] arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:103 [inline] el0_svc+0x170/0x254 arch/arm64/kernel/entry-common.c:747 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Code: f9400268 927ff914 91016280 d343fc08 (38786908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: f9400268 ldr x8, [x19] 4: 927ff914 and x20, x8, #0xfffffffffffffffe 8: 91016280 add x0, x20, #0x58 c: d343fc08 lsr x8, x0, #3 * 10: 38786908 ldrb w8, [x8, x24] <-- trapping instruction