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 CM = 0, WnR = 0 [dfff800000000001] address between user and kernel address ranges Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 9235 Comm: syz-executor.3 Not tainted 6.2.0-syzkaller-18300-g2ebd1fbb946d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : _compound_head include/linux/page-flags.h:251 [inline] pc : unlock_page+0x28/0x74 mm/folio-compat.c:20 lr : unlock_page+0x18/0x74 mm/folio-compat.c:19 sp : ffff80002f0972c0 x29: ffff80002f0972c0 x28: 0000000000000007 x27: 00000000fffffff4 x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000 x23: ffff0000d035d208 x22: 0000000000000001 x21: dfff800000000000 x20: 0000000000000008 x19: 0000000000000000 x18: 1fffe0003689f976 x17: 0000000000000000 x16: ffff80000850a534 x15: 0000000000000000 x14: 0000000000000002 x13: 0000000000000001 x12: 0000000000040000 x11: 0000000000016778 x10: ffff8000264bc000 x9 : 0000000000000001 x8 : dfff800000000000 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80002f096498 x4 : ffff800015c74760 x3 : ffff8000096b5d00 x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: _compound_head include/linux/page-flags.h:251 [inline] unlock_page+0x28/0x74 mm/folio-compat.c:20 ni_readpage_cmpr+0x474/0x798 fs/ntfs3/frecord.c:2149 ntfs_read_folio+0x14c/0x1c0 fs/ntfs3/inode.c:703 filemap_read_folio+0x14c/0x39c mm/filemap.c:2426 filemap_create_folio mm/filemap.c:2555 [inline] filemap_get_pages mm/filemap.c:2608 [inline] filemap_read+0xd78/0x2260 mm/filemap.c:2695 generic_file_read_iter+0xa0/0x450 mm/filemap.c:2841 ntfs_file_read_iter+0x184/0x1e0 fs/ntfs3/file.c:758 call_read_iter include/linux/fs.h:2183 [inline] generic_file_splice_read+0x1e0/0x508 fs/splice.c:309 do_splice_to fs/splice.c:793 [inline] splice_file_to_pipe+0x314/0x56c fs/splice.c:1013 do_sendfile+0x460/0xc70 fs/read_write.c:1262 __do_sys_sendfile64 fs/read_write.c:1323 [inline] __se_sys_sendfile64 fs/read_write.c:1309 [inline] __arm64_sys_sendfile64+0x160/0x3b4 fs/read_write.c:1309 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 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