------------[ cut here ]------------
WARNING: CPU: 1 PID: 20350 at include/linux/backing-dev.h:283 inode_to_wb include/linux/backing-dev.h:283 [inline]
WARNING: CPU: 1 PID: 20350 at include/linux/backing-dev.h:283 account_page_dirtied+0x767/0xa00 mm/page-writeback.c:2430
Modules linked in:
CPU: 1 PID: 20350 Comm: segctord Not tainted 5.12.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:inode_to_wb include/linux/backing-dev.h:283 [inline]
RIP: 0010:account_page_dirtied+0x767/0xa00 mm/page-writeback.c:2430
Code: a8 01 00 00 be ff ff ff ff 48 8d 78 70 e8 01 78 6c 07 31 ff 89 c3 89 c6 e8 e6 16 da ff 85 db 0f 85 bc fa ff ff e8 89 10 da ff <0f> 0b e9 b0 fa ff ff e8 7d 10 da ff 48 89 ee 4c 89 ef e8 02 df 34
RSP: 0018:ffffc9000286f880 EFLAGS: 00010093
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88802fa26040 RSI: ffffffff81990c37 RDI: 0000000000000003
RBP: ffffea000058d800 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff81990c2a R11: 0000000000000000 R12: ffff888085998490
R13: ffff8880859982e8 R14: ffff888085998138 R15: ffffea000058d808
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1b787c0d70 CR3: 0000000031fdc000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __set_page_dirty+0x7f/0x400 fs/buffer.c:608
 mark_buffer_dirty+0x448/0x5d0 fs/buffer.c:1137
 nilfs_btree_propagate_p fs/nilfs2/btree.c:1890 [inline]
 nilfs_btree_propagate+0x4ae/0xea0 fs/nilfs2/btree.c:2086
 nilfs_bmap_propagate+0x73/0x170 fs/nilfs2/bmap.c:337
 nilfs_collect_dat_data+0x45/0xd0 fs/nilfs2/segment.c:625
 nilfs_segctor_apply_buffers+0x14a/0x470 fs/nilfs2/segment.c:1009
 nilfs_segctor_scan_file+0x3e4/0x700 fs/nilfs2/segment.c:1058
 nilfs_segctor_collect_blocks fs/nilfs2/segment.c:1224 [inline]
 nilfs_segctor_collect fs/nilfs2/segment.c:1494 [inline]
 nilfs_segctor_do_construct+0x16ee/0x6b20 fs/nilfs2/segment.c:2036
 nilfs_segctor_construct+0x7a7/0xb30 fs/nilfs2/segment.c:2372
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2480 [inline]
 nilfs_segctor_thread+0x3c3/0xf90 fs/nilfs2/segment.c:2563
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294