syzbot

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err = 556
WARNING: lib/errseq.c:76 at errseq_set+0xe4/0x110 lib/errseq.c:75, CPU#0: syz.9.1389/17239
Modules linked in:
CPU: 0 UID: 0 PID: 17239 Comm: syz.9.1389 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:errseq_set+0xe6/0x110 lib/errseq.c:75
Code: 23 fd 44 89 e5 89 e8 5b 41 5c 41 5e 41 5f 5d e9 c0 b1 7e 06 cc e8 8a 09 23 fd eb e9 e8 83 09 23 fd 48 8d 3d 5c c9 f1 0a 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:ffffc9000f4ff6c0 EFLAGS: 00010287
RAX: ffffffff84a167ad RBX: 000000000000022c RCX: 0000000000080000
RDX: ffffc900100e2000 RSI: 000000000000022c RDI: ffffffff8f933110
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1f11c3f R12: ffffea0001392e00
R13: ffff888074c948d8 R14: ffff888074c94a30 R15: 000000000000022c
FS:  00007fef2a0e56c0(0000) GS:ffff888126179000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000010c0 CR3: 00000000941d8000 CR4: 00000000003526f0
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+0x488/0xd60 fs/fs-writeback.c:1883
 write_inode_now+0x1c2/0x290 fs/fs-writeback.c:2974
 ntfs_file_fsync+0x136/0x260 fs/ntfs3/file.c:1498
 generic_write_sync+0x1b5/0x2a0 include/linux/fs.h:2654
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x629/0xba0 fs/read_write.c:688
 ksys_write+0x156/0x270 fs/read_write.c:740
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fef2beacdd9
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:00007fef2a0e5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fef2c126090 RCX: 00007fef2beacdd9
RDX: 000000000000000d RSI: 00002000000010c0 RDI: 0000000000000004
RBP: 00007fef2bf42d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fef2c126128 R14: 00007fef2c126090 R15: 00007ffc9ff49e28
 </TASK>
----------------
Code disassembly (best guess):
   0:	23 fd                	and    %ebp,%edi
   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 b1 7e 06       	jmp    0x67eb1d4
  14:	cc                   	int3
  15:	e8 8a 09 23 fd       	call   0xfd2309a4
  1a:	eb e9                	jmp    0x5
  1c:	e8 83 09 23 fd       	call   0xfd2309a4
  21:	48 8d 3d 5c c9 f1 0a 	lea    0xaf1c95c(%rip),%rdi        # 0xaf1c984
  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