------------[ cut here ]------------
err = 556
WARNING: lib/errseq.c:76 at errseq_set+0xdd/0x110 lib/errseq.c:75, CPU#1: syz.5.3239/19652
Modules linked in:
CPU: 1 UID: 0 PID: 19652 Comm: syz.5.3239 Tainted: G             L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:errseq_set+0xdf/0x110 lib/errseq.c:75
Code: fd 44 89 e0 5b 41 5c 41 5e 41 5f 5d e9 0a fe 85 06 cc e8 14 31 01 fd 41 89 ec eb e5 e8 0a 31 01 fd 48 8d 3d 23 c6 f5 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:ffffc900059b7700 EFLAGS: 00010287
RAX: ffffffff84c452a6 RBX: 000000000000022c RCX: 0000000000080000
RDX: ffffc90010c6c000 RSI: 000000000000022c RDI: ffffffff8fba18d0
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff940003e1251 R12: ffff888064b91ef8
R13: ffffea0001f09280 R14: ffff888064b92438 R15: ffff888064b92430
FS:  00007f0c6a7c56c0(0000) GS:ffff888125d3c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa0a7e1cc6b CR3: 000000003bcba000 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:2561
 filemap_writeback mm/filemap.c:387 [inline]
 filemap_fdatawrite_range mm/filemap.c:412 [inline]
 file_write_and_wait_range+0x374/0x440 mm/filemap.c:786
 ntfs_file_fsync+0xfc/0x260 fs/ntfs3/file.c:1504
 generic_write_sync+0x1b5/0x270 include/linux/fs.h:2664
 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:61 [inline]
 do_syscall_64+0x17b/0x530 arch/x86/entry/syscall_64.c:85
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0c6c58de99
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:00007f0c6a7c5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0c6c816090 RCX: 00007f0c6c58de99
RDX: 0000000000000012 RSI: 0000200000019300 RDI: 0000000000000004
RBP: 00007f0c6c623eaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0c6c816128 R14: 00007f0c6c816090 R15: 00007fffcbb07d68
 </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 0a fe 85 06       	jmp    0x685fe1b
  11:	cc                   	int3
  12:	e8 14 31 01 fd       	call   0xfd01312b
  17:	41 89 ec             	mov    %ebp,%r12d
  1a:	eb e5                	jmp    0x1
  1c:	e8 0a 31 01 fd       	call   0xfd01312b
  21:	48 8d 3d 23 c6 f5 0a 	lea    0xaf5c623(%rip),%rdi        # 0xaf5c64b
  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