------------[ cut here ]------------
err = 556
WARNING: lib/errseq.c:76 at errseq_set+0xdd/0x110 lib/errseq.c:75, CPU#1: syz.7.846/13456
Modules linked in:
CPU: 1 UID: 0 PID: 13456 Comm: syz.7.846 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
RIP: 0010:errseq_set+0xdf/0x110 lib/errseq.c:75
Code: fd 44 89 e0 5b 41 5c 41 5e 41 5f 5d e9 da 46 84 06 cc e8 84 c0 02 fd 41 89 ec eb e5 e8 7a c0 02 fd 48 8d 3d a3 54 f7 0a 89 de <67> 48 0f b9 3a 41 89 ec eb cd 44 89 f1 80 e1 07 80 c1 03 38 c1 0f
RSP: 0018:ffffc9000713f6a0 EFLAGS: 00010287
RAX: ffffffff84c30816 RBX: 000000000000022c RCX: 0000000000080000
RDX: ffffc9000e841000 RSI: 000000000000022c RDI: ffffffff8fba5cc0
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1f5f267 R12: ffff88805ecac4f0
R13: ffffea000197ae40 R14: ffff88805ecaca30 R15: ffff88805ecaca28
FS:  00007f7cf7d256c0(0000) GS:ffff888125d42000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7cf9b3b580 CR3: 000000001fbaa000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __filemap_set_wb_err+0x24/0x1e0 mm/filemap.c:703
 mapping_set_error include/linux/pagemap.h:244 [inline]
 ntfs_writepages+0x2c6/0x480 fs/ntfs3/inode.c:1022
 do_writepages+0x338/0x560 mm/page-writeback.c:2571
 __writeback_single_inode+0x12e/0xf90 fs/fs-writeback.c:1787
 writeback_single_inode+0x4dd/0xe10 fs/fs-writeback.c:1906
 write_inode_now+0x1c2/0x290 fs/fs-writeback.c:3060
 ntfs_file_fsync+0x136/0x260 fs/ntfs3/file.c:1508
 generic_write_sync+0x1b5/0x270 include/linux/fs.h:2666
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7cf9aede99
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7cf7d25028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f7cf9d76090 RCX: 00007f7cf9aede99
RDX: 0000000000000078 RSI: 0000200000006880 RDI: 0000000000000004
RBP: 00007f7cf9b83eaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7cf9d76128 R14: 00007f7cf9d76090 R15: 00007fffedb2e838
 </TASK>
----------------
Code disassembly (best guess):
   0:	fd                   	std
   1:	44 89 e0             	mov    %r12d,%eax
   4:	5b                   	pop    %rbx
   5:	41 5c                	pop    %r12
   7:	41 5e                	pop    %r14
   9:	41 5f                	pop    %r15
   b:	5d                   	pop    %rbp
   c:	e9 da 46 84 06       	jmp    0x68446eb
  11:	cc                   	int3
  12:	e8 84 c0 02 fd       	call   0xfd02c09b
  17:	41 89 ec             	mov    %ebp,%r12d
  1a:	eb e5                	jmp    0x1
  1c:	e8 7a c0 02 fd       	call   0xfd02c09b
  21:	48 8d 3d a3 54 f7 0a 	lea    0xaf754a3(%rip),%rdi        # 0xaf754cb
  28:	89 de                	mov    %ebx,%esi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	41 89 ec             	mov    %ebp,%r12d
  32:	eb cd                	jmp    0x1
  34:	44 89 f1             	mov    %r14d,%ecx
  37:	80 e1 07             	and    $0x7,%cl
  3a:	80 c1 03             	add    $0x3,%cl
  3d:	38 c1                	cmp    %al,%cl
  3f:	0f                   	.byte 0xf