Unable to handle kernel paging request at virtual address dfff80000000004b KASAN: null-ptr-deref in range [0x0000000000000258-0x000000000000025f] 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 [dfff80000000004b] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 6351 Comm: kworker/1:5 Not tainted 6.9.0-rc7-syzkaller-gfda5695d692c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: events l2cap_info_timeout pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __lock_acquire+0x104/0x763c kernel/locking/lockdep.c:5005 lr : lock_acquire+0x248/0x73c kernel/locking/lockdep.c:5754 sp : ffff8000a1017400 x29: ffff8000a10176c0 x28: ffff80008a080b10 x27: ffff700014202ef0 x26: 1ffff00011dd60cc x25: 0000000000000000 x24: 0000000000000000 x23: ffff700014202ea8 x22: 0000000000000000 x21: 0000000000000000 x20: 0000000000000000 x19: 0000000000000258 x18: ffff8000a1017240 x17: 000000000001c3b0 x16: ffff80008ae89f60 x15: 0000000000000001 x14: 1fffe0001c7b5c1f x13: ffff8000a1017540 x12: dfff800000000000 x11: ffff80008033724c x10: ffff80008eeb0664 x9 : 00000000000000f3 x8 : 000000000000004b x7 : ffff80008a080b10 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000258 Call trace: __lock_acquire+0x104/0x763c kernel/locking/lockdep.c:5005 lock_acquire+0x248/0x73c kernel/locking/lockdep.c:5754 lock_sock_nested+0x5c/0x11c net/core/sock.c:3535 lock_sock include/net/sock.h:1673 [inline] l2cap_sock_ready_cb+0x4c/0x130 net/bluetooth/l2cap_sock.c:1604 l2cap_chan_ready net/bluetooth/l2cap_core.c:1229 [inline] l2cap_conn_start+0x6e0/0xe10 net/bluetooth/l2cap_core.c:1479 l2cap_info_timeout+0x68/0xb8 net/bluetooth/l2cap_core.c:1641 process_one_work+0x7b8/0x15d4 kernel/workqueue.c:3267 process_scheduled_works kernel/workqueue.c:3348 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:3429 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 Code: d00760e8 b9430108 34000208 d343fe68 (386c6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: d00760e8 adrp x8, 0xec1e000 4: b9430108 ldr w8, [x8, #768] 8: 34000208 cbz w8, 0x48 c: d343fe68 lsr x8, x19, #3 * 10: 386c6908 ldrb w8, [x8, x12] <-- trapping instruction