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: 0 PID: 3083 Comm: kworker/0:1H Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 Workqueue: glock_workqueue glock_work_func pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : is_system_glock fs/gfs2/glock.c:724 [inline] pc : do_xmote+0xb20/0x1198 fs/gfs2/glock.c:833 lr : do_xmote+0xafc/0x1198 fs/gfs2/glock.c:830 sp : ffff800020857a40 x29: ffff800020857a60 x28: dfff800000000000 x27: 1fffe0001a7cb8b5 x26: ffff0000d7a14000 x25: ffff0000d3e5c5a8 x24: 0000000000000022 x23: 00000000000004b8 x22: 0000000000000000 x21: 0000000000000000 x20: ffff0000d7a14000 x19: ffff0000d3e5c548 x18: 0000000000000000 x17: ffff8000181fa000 x16: ffff8000082e7b1c x15: ffff800017cdafc0 x14: ffff0000d4925dd8 x13: 1ffff00002a180b1 x12: 0000000000ff0100 x11: ff0080000a19e260 x10: 0000000000000000 x9 : ffff80000a19e260 x8 : 0000000000000097 x7 : ffff80000a825e08 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082e7c30 x2 : 0000000000000001 x1 : 0000000000004000 x0 : 0000000000000000 Call trace: is_system_glock fs/gfs2/glock.c:724 [inline] do_xmote+0xb20/0x1198 fs/gfs2/glock.c:833 run_queue+0x3b4/0x690 fs/gfs2/glock.c:905 glock_work_func+0x1fc/0x428 fs/gfs2/glock.c:1089 process_one_work+0x7f4/0x13a8 kernel/workqueue.c:2292 worker_thread+0x8c8/0xfbc kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 Code: 979ce31a f94002e8 9112e117 d343fee8 (387c6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 979ce31a bl 0xfffffffffe738c68 4: f94002e8 ldr x8, [x23] 8: 9112e117 add x23, x8, #0x4b8 c: d343fee8 lsr x8, x23, #3 * 10: 387c6908 ldrb w8, [x8, x28] <-- trapping instruction