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: 0 UID: 0 PID: 8359 Comm: syz-executor Not tainted 6.15.0-rc5-syzkaller-gc32f8dc5aaf9 #0 PREEMPT 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+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 : ffff80009c627680 x29: ffff80009c627720 x28: 1ffff000124bc2e8 x27: 1fffe0001af0f8e4 x26: dfff800000000000 x25: ffff0000cbe90000 x24: dfff800000000000 x23: ffff7000138c4ed0 x22: ffff8000927e0fe0 x21: 1fffe0001e11d10c x20: 0000000000000000 x19: ffff0000f08e8860 x18: 00000000ffffffff x17: ffff800092f27000 x16: ffff800080525898 x15: 0000000000000001 x14: 1ffff000124fc200 x13: 0000000000000000 x12: 0000000000000000 x11: ffff7000124fc201 x10: 0000000000000001 x9 : dfff800000000000 x8 : 000000000000000b x7 : ffff80008ad3a250 x6 : 0000000000000000 x5 : ffff8000932de268 x4 : 0000000000000008 x3 : ffff8000805259a0 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:4618 hci_conn_del_sysfs+0xb4/0x170 net/bluetooth/hci_sysfs.c:75 hci_conn_cleanup net/bluetooth/hci_conn.c:175 [inline] hci_conn_del+0x744/0xab0 net/bluetooth/hci_conn.c:1167 hci_conn_hash_flush+0x178/0x214 net/bluetooth/hci_conn.c:2535 hci_dev_close_sync+0x89c/0x1154 net/bluetooth/hci_sync.c:5225 hci_dev_do_close net/bluetooth/hci_core.c:483 [inline] hci_unregister_dev+0x1f0/0x4a8 net/bluetooth/hci_core.c:2678 vhci_release+0x7c/0xd0 drivers/bluetooth/hci_vhci.c:665 __fput+0x340/0x75c fs/file_table.c:465 ____fput+0x20/0x58 fs/file_table.c:493 task_work_run+0x1dc/0x260 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x4e8/0x1998 kernel/exit.c:953 do_group_exit+0x194/0x22c kernel/exit.c:1102 __do_sys_exit_group kernel/exit.c:1113 [inline] __se_sys_exit_group kernel/exit.c:1111 [inline] pid_child_should_wake+0x0/0x1dc kernel/exit.c:1111 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 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