RBP: 00007fc88b77d120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000246 R12: 0000000000000005 R13: 0000000020003480 R14: 00007fc88ab9bf80 R15: 00007ffdc1fd0988 general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 PID: 17363 Comm: syz-executor.5 Not tainted 6.5.0-rc1-syzkaller-00259-g831fe284d827 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 RIP: 0010:_compound_head include/linux/page-flags.h:245 [inline] RIP: 0010:unlock_page+0x25/0x130 mm/folio-compat.c:21 Code: 00 eb b9 66 90 f3 0f 1e fa 41 54 55 53 48 89 fb e8 a0 f6 cf ff 48 8d 7b 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 63 08 31 ff 4c 89 e5 83 e5 01 RSP: 0018:ffffc90016e77868 EFLAGS: 00010212 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000bd73000 RDX: 0000000000000001 RSI: ffffffff81b67840 RDI: 0000000000000008 RBP: 0000000000000001 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000000001 R11: fffffffffffcc848 R12: 0000000000000000 R13: ffff888023cc7e88 R14: ffffea0002550d80 R15: 0000000000000000 FS: 00007fc88b77d6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200e4030 CR3: 0000000023ae2000 CR4: 0000000000350ef0 Call Trace: ni_readpage_cmpr+0x334/0xc80 fs/ntfs3/frecord.c:2153 ntfs_read_folio+0x107/0x1e0 fs/ntfs3/inode.c:716 filemap_read_folio+0xe5/0x2b0 mm/filemap.c:2389 filemap_create_folio mm/filemap.c:2517 [inline] filemap_get_pages+0xdd7/0x1820 mm/filemap.c:2570 filemap_read+0x373/0xd00 mm/filemap.c:2658 generic_file_read_iter+0x346/0x450 mm/filemap.c:2837 ntfs_file_read_iter+0x1b8/0x270 fs/ntfs3/file.c:744 call_read_iter include/linux/fs.h:1865 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x4e0/0x930 fs/read_write.c:470 ksys_read+0x12f/0x250 fs/read_write.c:613 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc88aa7b7cc Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 59 81 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 af 81 02 00 48 RSP: 002b:00007fc88b77d040 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000020000ac0 RCX: 00007fc88aa7b7cc RDX: 0000000000002000 RSI: 0000000020000ac0 RDI: 0000000000000005 RBP: 00007fc88b77d120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000246 R12: 0000000000000005 R13: 0000000020003480 R14: 00007fc88ab9bf80 R15: 00007ffdc1fd0988 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:_compound_head include/linux/page-flags.h:245 [inline] RIP: 0010:unlock_page+0x25/0x130 mm/folio-compat.c:21 Code: 00 eb b9 66 90 f3 0f 1e fa 41 54 55 53 48 89 fb e8 a0 f6 cf ff 48 8d 7b 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 63 08 31 ff 4c 89 e5 83 e5 01 RSP: 0018:ffffc90016e77868 EFLAGS: 00010212 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000bd73000 RDX: 0000000000000001 RSI: ffffffff81b67840 RDI: 0000000000000008 RBP: 0000000000000001 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000000001 R11: fffffffffffcc848 R12: 0000000000000000 R13: ffff888023cc7e88 R14: ffffea0002550d80 R15: 0000000000000000 FS: 00007fc88b77d6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2ed2e000 CR3: 0000000023ae2000 CR4: 0000000000350ee0 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: eb b9 jmp 0xffffffbb 2: 66 90 xchg %ax,%ax 4: f3 0f 1e fa endbr64 8: 41 54 push %r12 a: 55 push %rbp b: 53 push %rbx c: 48 89 fb mov %rdi,%rbx f: e8 a0 f6 cf ff call 0xffcff6b4 14: 48 8d 7b 08 lea 0x8(%rbx),%rdi 18: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1f: fc ff df 22: 48 89 fa mov %rdi,%rdx 25: 48 c1 ea 03 shr $0x3,%rdx * 29: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2d: 0f 85 e4 00 00 00 jne 0x117 33: 4c 8b 63 08 mov 0x8(%rbx),%r12 37: 31 ff xor %edi,%edi 39: 4c 89 e5 mov %r12,%rbp 3c: 83 e5 01 and $0x1,%ebp