Unable to handle kernel paging request at virtual address dfff80000000000a KASAN: null-ptr-deref in range [0x0000000000000050-0x0000000000000057] 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 [dfff80000000000a] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] SMP Modules linked in: CPU: 1 UID: 0 PID: 4993 Comm: kworker/1:5 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: md_misc md_start_sync pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : remove_spares+0x100/0x3c8 drivers/md/md.c:10182 lr : remove_spares+0xe0/0x3c8 drivers/md/md.c:10181 sp : ffff800097277900 x29: ffff8000972779a0 x28: ffff0000f4c1c070 x27: 1fffe0001e98380c x26: dfff800000000000 x25: ffff700012e4ef24 x24: 0000000000000050 x23: 0000000000000000 x22: ffff0000f4c1d108 x21: 0000000000000000 x20: ffff0000f4c1c058 x19: ffff0000f4c1c060 x18: 00000000ffffffff x17: ffff80012364b000 x16: ffff80008f920000 x15: ffff80008b586000 x14: 00000000001b18f8 x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff60001e983a48 x9 : 0000000000000000 x8 : 000000000000000a x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000008 x3 : ffff8000841063ac x2 : 0000000000000000 x1 : ffff0000c4d55880 x0 : 0000000000000001 Call trace: remove_spares+0x100/0x3c8 drivers/md/md.c:10182 (P) remove_and_add_spares+0xf4/0x580 drivers/md/md.c:10207 md_start_sync+0x1f8/0xc80 drivers/md/md.c:10323 process_one_work kernel/workqueue.c:3495 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3578 worker_thread+0x798/0xbd0 kernel/workqueue.c:3659 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 Code: 972be018 f9400268 91014118 d343ff08 (387a6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 972be018 bl 0xfffffffffcaf8060 4: f9400268 ldr x8, [x19] 8: 91014118 add x24, x8, #0x50 c: d343ff08 lsr x8, x24, #3 * 10: 387a6908 ldrb w8, [x8, x26] <-- trapping instruction