------------[ cut here ]------------
err = 556
WARNING: lib/errseq.c:76 at errseq_set+0xe4/0x110 lib/errseq.c:75, CPU#0: syz.0.0/5330
Modules linked in:
CPU: 0 UID: 0 PID: 5330 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:errseq_set+0xe6/0x110 lib/errseq.c:75
Code: 11 fd 44 89 e5 89 e8 5b 41 5c 41 5e 41 5f 5d e9 c0 50 fa 06 cc e8 4a bd 11 fd eb e9 e8 43 bd 11 fd 48 8d 3d 9c de 87 0b 89 de <67> 48 0f b9 3a eb d4 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 35 ff
RSP: 0018:ffffc9000370f240 EFLAGS: 00010283
RAX: ffffffff84b4082d RBX: 000000000000022c RCX: 0000000000100000
RDX: ffffc90021003000 RSI: 000000000000022c RDI: ffffffff903be6d0
RBP: 0000000000000000 R08: ffffc9000370f227 R09: 1ffff920006e1e44
R10: dffffc0000000000 R11: fffff520006e1e45 R12: ffffea0001545d00
R13: ffff888054cabc98 R14: ffff888054cabdc0 R15: 000000000000022c
FS:  00007f9df224b6c0(0000) GS:ffff88808c87b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056308b5313c8 CR3: 00000000335f6000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __filemap_set_wb_err+0x24/0x1e0 mm/filemap.c:704
 mapping_set_error include/linux/pagemap.h:244 [inline]
 ntfs_resident_writepage fs/ntfs3/inode.c:1016 [inline]
 ntfs_writepages+0x3dd/0x5e0 fs/ntfs3/inode.c:1043
 do_writepages+0x32e/0x550 mm/page-writeback.c:2571
 __writeback_single_inode+0x133/0x10e0 fs/fs-writeback.c:1764
 writeback_single_inode+0x4ac/0xdc0 fs/fs-writeback.c:1883
 write_inode_now+0x1c2/0x290 fs/fs-writeback.c:2974
 ntfs_file_fsync+0x133/0x250 fs/ntfs3/file.c:1498
 generic_write_sync+0x1b3/0x290 include/linux/fs.h:2654
 iter_file_splice_write+0x9a1/0x10f0 fs/splice.c:736
 do_splice_from fs/splice.c:936 [inline]
 direct_splice_actor+0x101/0x160 fs/splice.c:1159
 splice_direct_to_actor+0x53a/0xc70 fs/splice.c:1103
 do_splice_direct_actor fs/splice.c:1202 [inline]
 do_splice_direct+0x195/0x290 fs/splice.c:1228
 do_sendfile+0x535/0x7d0 fs/read_write.c:1372
 __do_sys_sendfile64 fs/read_write.c:1433 [inline]
 __se_sys_sendfile64+0x144/0x1a0 fs/read_write.c:1419
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0x560 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9df139ce59
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:00007f9df224afe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f9df1616090 RCX: 00007f9df139ce59
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000006
RBP: 00007f9df1432d6f R08: 0000000000000000 R09: 0000000000000000
R10: 000000007ffff000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9df1616128 R14: 00007f9df1616090 R15: 00007ffd5aba2278
 </TASK>
----------------
Code disassembly (best guess):
   0:	11 fd                	adc    %edi,%ebp
   2:	44 89 e5             	mov    %r12d,%ebp
   5:	89 e8                	mov    %ebp,%eax
   7:	5b                   	pop    %rbx
   8:	41 5c                	pop    %r12
   a:	41 5e                	pop    %r14
   c:	41 5f                	pop    %r15
   e:	5d                   	pop    %rbp
   f:	e9 c0 50 fa 06       	jmp    0x6fa50d4
  14:	cc                   	int3
  15:	e8 4a bd 11 fd       	call   0xfd11bd64
  1a:	eb e9                	jmp    0x5
  1c:	e8 43 bd 11 fd       	call   0xfd11bd64
  21:	48 8d 3d 9c de 87 0b 	lea    0xb87de9c(%rip),%rdi        # 0xb87dec4
  28:	89 de                	mov    %ebx,%esi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	eb d4                	jmp    0x5
  31:	44 89 f1             	mov    %r14d,%ecx
  34:	80 e1 07             	and    $0x7,%cl
  37:	80 c1 03             	add    $0x3,%cl
  3a:	38 c1                	cmp    %al,%cl
  3c:	0f                   	.byte 0xf
  3d:	8c                   	.byte 0x8c
  3e:	35                   	.byte 0x35
  3f:	ff                   	.byte 0xff