list_add double add: new=ffff888044232900, prev=ffff888044232900, next=ffffc9000df4f1c0.
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:37!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5320 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:__list_add_valid_or_report+0xa5/0x130 lib/list_debug.c:35
Code: 74 12 b0 01 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 c7 c7 60 9f 2a 8c 4c 89 fe 4c 89 f2 48 89 d9 e8 7c 57 63 fc 90 <0f> 0b 48 c7 c7 40 9d 2a 8c e8 6d 57 63 fc 90 0f 0b 48 c7 c7 00 9e
RSP: 0018:ffffc9000df4ed48 EFLAGS: 00010246
RAX: 0000000000000058 RBX: ffffc9000df4f1c0 RCX: 9e05eee35a04df00
RDX: ffffc90021003000 RSI: 0000000000001476 RDI: 0000000000001477
RBP: 1ffff92001be9e39 R08: ffffc9000df4eac7 R09: 1ffff92001be9d58
R10: dffffc0000000000 R11: fffff52001be9d59 R12: 1ffff11008846520
R13: dffffc0000000000 R14: ffff888044232900 R15: ffff888044232900
FS:  00007f28066756c0(0000) GS:ffff88808c821000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f742a1d8e9c CR3: 00000000125a3000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __list_add_valid include/linux/list.h:96 [inline]
 __list_add include/linux/list.h:158 [inline]
 list_add_tail include/linux/list.h:191 [inline]
 nilfs_lookup_dirty_data_buffers+0x468/0x7b0 fs/nilfs2/segment.c:745
 nilfs_segctor_scan_file+0x26a/0xf70 fs/nilfs2/segment.c:1046
 nilfs_segctor_collect_blocks fs/nilfs2/segment.c:1198 [inline]
 nilfs_segctor_collect fs/nilfs2/segment.c:1547 [inline]
 nilfs_segctor_do_construct+0x1c8d/0x7bb0 fs/nilfs2/segment.c:2122
 nilfs_segctor_construct+0x170/0x690 fs/nilfs2/segment.c:2462
 nilfs_clean_segments+0x4ec/0xbb0 fs/nilfs2/segment.c:2557
 nilfs_ioctl_clean_segments fs/nilfs2/ioctl.c:922 [inline]
 nilfs_ioctl+0x2619/0x2780 fs/nilfs2/ioctl.c:1352
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 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: 0033:0x7f280579ce59
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:00007f2806674fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f2805a16090 RCX: 00007f280579ce59
RDX: 0000200000000040 RSI: 0000000040786e88 RDI: 0000000000000004
RBP: 00007f2805832e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2805a16128 R14: 00007f2805a16090 R15: 00007ffe0f801f08
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_add_valid_or_report+0xa5/0x130 lib/list_debug.c:35
Code: 74 12 b0 01 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 c7 c7 60 9f 2a 8c 4c 89 fe 4c 89 f2 48 89 d9 e8 7c 57 63 fc 90 <0f> 0b 48 c7 c7 40 9d 2a 8c e8 6d 57 63 fc 90 0f 0b 48 c7 c7 00 9e
RSP: 0018:ffffc9000df4ed48 EFLAGS: 00010246
RAX: 0000000000000058 RBX: ffffc9000df4f1c0 RCX: 9e05eee35a04df00
RDX: ffffc90021003000 RSI: 0000000000001476 RDI: 0000000000001477
RBP: 1ffff92001be9e39 R08: ffffc9000df4eac7 R09: 1ffff92001be9d58
R10: dffffc0000000000 R11: fffff52001be9d59 R12: 1ffff11008846520
R13: dffffc0000000000 R14: ffff888044232900 R15: ffff888044232900
FS:  00007f28066756c0(0000) GS:ffff88808c821000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffa678bee9c CR3: 00000000125a3000 CR4: 0000000000352ef0