Unable to handle kernel paging request at virtual address dfff800000000001 KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] 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, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [dfff800000000001] address between user and kernel address ranges Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 10438 Comm: syz-executor.5 Not tainted 6.4.0-rc5-syzkaller-g177239177378 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : _compound_head include/linux/page-flags.h:245 [inline] pc : unlock_page+0x28/0x74 mm/folio-compat.c:21 lr : unlock_page+0x18/0x74 mm/folio-compat.c:20 sp : ffff8000984876e0 x29: ffff8000984876e0 x28: 0000000000000007 x27: 00000000fffffff4 x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000 x23: ffff0000ccc88508 x22: 0000000000000001 x21: dfff800000000000 x20: 0000000000000008 x19: 0000000000000000 x18: 1fffe000368447c6 x17: 0000000000000000 x16: ffff80008050c16c x15: 0000000000000001 x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000001 x11: 0000000000040000 x10: 0000000000011f90 x9 : 0000000000000001 x8 : dfff800000000000 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800098486a18 x4 : ffff80008df9ee80 x3 : ffff8000816c3fe8 x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: _compound_head include/linux/page-flags.h:245 [inline] unlock_page+0x28/0x74 mm/folio-compat.c:21 ni_readpage_cmpr+0x474/0x798 fs/ntfs3/frecord.c:2149 ntfs_read_folio+0x14c/0x1c0 fs/ntfs3/inode.c:716 filemap_read_folio+0x14c/0x39c mm/filemap.c:2421 filemap_fault+0xa40/0x1154 mm/filemap.c:3364 __do_fault+0x11c/0x3d8 mm/memory.c:4176 do_read_fault mm/memory.c:4530 [inline] do_fault mm/memory.c:4659 [inline] do_pte_missing mm/memory.c:3647 [inline] handle_pte_fault mm/memory.c:4947 [inline] __handle_mm_fault mm/memory.c:5089 [inline] handle_mm_fault+0x32cc/0x48ec mm/memory.c:5243 __do_page_fault arch/arm64/mm/fault.c:523 [inline] do_page_fault+0x81c/0xcbc arch/arm64/mm/fault.c:655 do_translation_fault+0x94/0xc8 arch/arm64/mm/fault.c:741 do_mem_abort+0x74/0x200 arch/arm64/mm/fault.c:877 el0_da+0x64/0x17c arch/arm64/kernel/entry-common.c:517 el0t_64_sync_handler+0xcc/0xfc arch/arm64/kernel/entry-common.c:668 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 Code: d2d00008 91002274 f2fbffe8 d343fe89 (38686928) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: d2d00008 mov x8, #0x800000000000 // #140737488355328 4: 91002274 add x20, x19, #0x8 8: f2fbffe8 movk x8, #0xdfff, lsl #48 c: d343fe89 lsr x9, x20, #3 * 10: 38686928 ldrb w8, [x9, x8] <-- trapping instruction