RDX: 00000000000000a9 RSI: 0000000020000240 RDI: 0000000000000004 RBP: 00007f2e87e861d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffd28e3694f R14: 00007f2e87e86300 R15: 0000000000022000 general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 1 PID: 32394 Comm: syz-executor.1 Not tainted 6.2.0-next-20230303-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 RIP: 0010:_compound_head include/linux/page-flags.h:251 [inline] RIP: 0010:unlock_page+0x25/0x130 mm/folio-compat.c:21 Code: 00 00 00 00 00 f3 0f 1e fa 41 54 55 48 89 fd 53 e8 70 69 d1 ff 48 8d 7d 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 e4 00 00 00 4c 8b 65 08 31 ff 4c 89 e3 83 e3 01 RSP: 0018:ffffc9000ba7f888 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000008 RCX: ffffc9000504b000 RDX: 0000000000000001 RSI: ffffffff81b34e80 RDI: 0000000000000008 RBP: 0000000000000000 R08: 0000000000000004 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff888027f51888 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f2e87e86700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3332e000 CR3: 000000005b24d000 CR4: 00000000003506e0 Call Trace: ni_readpage_cmpr+0x44a/0xcd0 fs/ntfs3/frecord.c:2149 ntfs_read_folio+0x101/0x1e0 fs/ntfs3/inode.c:716 filemap_read_folio+0xdb/0x2c0 mm/filemap.c:2424 filemap_create_folio mm/filemap.c:2552 [inline] filemap_get_pages+0x42a/0x1620 mm/filemap.c:2605 filemap_read+0x35e/0xc70 mm/filemap.c:2693 generic_file_read_iter+0x3ad/0x5b0 mm/filemap.c:2840 ntfs_file_read_iter+0x1b8/0x270 fs/ntfs3/file.c:744 call_read_iter include/linux/fs.h:1845 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x681/0x930 fs/read_write.c:470 ksys_read+0x12b/0x250 fs/read_write.c:613 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f2e8708c0f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2e87e86168 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007f2e871abf80 RCX: 00007f2e8708c0f9 RDX: 00000000000000a9 RSI: 0000000020000240 RDI: 0000000000000004 RBP: 00007f2e87e861d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffd28e3694f R14: 00007f2e87e86300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:_compound_head include/linux/page-flags.h:251 [inline] RIP: 0010:unlock_page+0x25/0x130 mm/folio-compat.c:21 Code: 00 00 00 00 00 f3 0f 1e fa 41 54 55 48 89 fd 53 e8 70 69 d1 ff 48 8d 7d 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 e4 00 00 00 4c 8b 65 08 31 ff 4c 89 e3 83 e3 01 RSP: 0018:ffffc9000ba7f888 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000008 RCX: ffffc9000504b000 RDX: 0000000000000001 RSI: ffffffff81b34e80 RDI: 0000000000000008 RBP: 0000000000000000 R08: 0000000000000004 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff888027f51888 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f2e87e86700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbf25d85058 CR3: 000000005b24d000 CR4: 00000000003506f0 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 00 add %al,(%rax) 4: 00 f3 add %dh,%bl 6: 0f 1e fa nop %edx 9: 41 54 push %r12 b: 55 push %rbp c: 48 89 fd mov %rdi,%rbp f: 53 push %rbx 10: e8 70 69 d1 ff callq 0xffd16985 15: 48 8d 7d 08 lea 0x8(%rbp),%rdi 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 e4 00 00 00 jne 0x118 34: 4c 8b 65 08 mov 0x8(%rbp),%r12 38: 31 ff xor %edi,%edi 3a: 4c 89 e3 mov %r12,%rbx 3d: 83 e3 01 and $0x1,%ebx