Unable to handle kernel paging request at virtual address dfff800000000097 KASAN: null-ptr-deref in range [0x00000000000004b8-0x00000000000004bf] 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 [dfff800000000097] address between user and kernel address ranges Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 51 Comm: kworker/1:1H Not tainted 6.1.87-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: glock_workqueue glock_work_func pstate: 80401005 (Nzcv daif +PAN -UAO -TCO -DIT +SSBS BTYPE=--) pc : is_system_glock fs/gfs2/glock.c:725 [inline] pc : do_xmote+0xb58/0x11d8 fs/gfs2/glock.c:835 lr : do_xmote+0xb24/0x11d8 fs/gfs2/glock.c:832 sp : ffff80001b387a40 x29: ffff80001b387a60 x28: dfff800000000000 x27: dfff800000000000 x26: ffff0000da5b5ac8 x25: ffff0000da5b5a88 x24: 0000000000000013 x23: 00000000000004b8 x22: 0000000000000000 x21: 0000000000000000 x20: ffff0000d15e4000 x19: ffff0000da5b5a68 x18: 1fffe0003686f176 x17: ffff80001584d000 x16: ffff80000825f5e8 x15: 0000000000000000 x14: 1ffff00002b0a0b0 x13: dfff800000000000 x12: 0000000000000001 x11: 0000000000ff0100 x10: 0000000000000000 x9 : ffff80000a38eafc x8 : 0000000000000097 x7 : ffff80000aa70568 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff80000831e9d0 x2 : 0000000000000001 x1 : 0000000000004000 x0 : 0000000000000000 Call trace: is_system_glock fs/gfs2/glock.c:725 [inline] do_xmote+0xb58/0x11d8 fs/gfs2/glock.c:835 run_queue+0x400/0x688 fs/gfs2/glock.c:914 glock_work_func+0x270/0x440 fs/gfs2/glock.c:1084 process_one_work+0x7ac/0x1404 kernel/workqueue.c:2292 worker_thread+0x8e4/0xfec kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864 Code: d2d0001b f2fbfffb 9112e117 d343fee8 (387c6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: d2d0001b mov x27, #0x800000000000 // #140737488355328 4: f2fbfffb movk x27, #0xdfff, lsl #48 8: 9112e117 add x23, x8, #0x4b8 c: d343fee8 lsr x8, x23, #3 * 10: 387c6908 ldrb w8, [x8, x28] <-- trapping instruction