Unable to handle kernel paging request at virtual address dfff800000000001 KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] 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, Xs = 0 [dfff800000000001] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 26525 Comm: syz-executor.2 Not tainted 6.6.0-rc6-syzkaller-g78124b0c1d10 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : _compound_head include/linux/page-flags.h:247 [inline] pc : unlock_page+0x28/0x74 mm/folio-compat.c:21 lr : unlock_page+0x18/0x74 mm/folio-compat.c:20 sp : ffff80009d856ae0 x29: ffff80009d856ae0 x28: 0000000000000007 x27: 00000000fffffff4 x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000 x23: ffff0000c60ec108 x22: 0000000000000001 x21: dfff800000000000 x20: 0000000000000008 x19: 0000000000000000 x18: 1fffe0003683bdce x17: 0000000000000000 x16: ffff8000805164e0 x15: 0000000000000001 x14: 1fffff8000a56390 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000040000 x10: 0000000000019d85 x9 : 0000000000000001 x8 : dfff800000000000 x7 : 0000000000059370 x6 : 0000000000059330 x5 : ffff80009d855db8 x4 : ffff80008e260d78 x3 : ffff80008170ff94 x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: _compound_head include/linux/page-flags.h:247 [inline] unlock_page+0x28/0x74 mm/folio-compat.c:21 ni_readpage_cmpr+0x474/0x798 fs/ntfs3/frecord.c:2153 ntfs_read_folio+0x14c/0x1c0 fs/ntfs3/inode.c:718 filemap_read_folio+0x14c/0x39c mm/filemap.c:2382 filemap_fault+0x9bc/0xff4 mm/filemap.c:3376 __do_fault+0x11c/0x3d8 mm/memory.c:4204 do_read_fault mm/memory.c:4568 [inline] do_fault mm/memory.c:4705 [inline] do_pte_missing mm/memory.c:3669 [inline] handle_pte_fault mm/memory.c:4978 [inline] __handle_mm_fault mm/memory.c:5119 [inline] handle_mm_fault+0x1fa4/0x49fc mm/memory.c:5284 __do_page_fault arch/arm64/mm/fault.c:513 [inline] do_page_fault+0x4e8/0xa54 arch/arm64/mm/fault.c:626 do_translation_fault+0x94/0xc8 arch/arm64/mm/fault.c:710 do_mem_abort+0x74/0x200 arch/arm64/mm/fault.c:846 el1_abort+0x3c/0x5c arch/arm64/kernel/entry-common.c:398 el1h_64_sync_handler+0x60/0xac arch/arm64/kernel/entry-common.c:458 el1h_64_sync+0x64/0x68 arch/arm64/kernel/entry.S:590 __arch_copy_from_user+0xc8/0x230 arch/arm64/lib/copy_template.S:114 ipv6_setsockopt+0x68/0x1a4 net/ipv6/ipv6_sockglue.c:1012 udpv6_setsockopt+0xb8/0xd0 net/ipv6/udp.c:1690 sock_common_setsockopt+0xb0/0xcc net/core/sock.c:3699 __sys_setsockopt+0x388/0x654 net/socket.c:2325 __do_sys_setsockopt net/socket.c:2336 [inline] __se_sys_setsockopt net/socket.c:2333 [inline] __arm64_sys_setsockopt+0xb8/0xd4 net/socket.c:2333 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 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