------------[ cut here ]------------
WARNING: CPU: 1 PID: 12545 at include/linux/backing-dev.h:283 inode_to_wb include/linux/backing-dev.h:283 [inline]
WARNING: CPU: 1 PID: 12545 at include/linux/backing-dev.h:283 account_page_dirtied+0x763/0x9d0 mm/page-writeback.c:2430
Modules linked in:
CPU: 1 PID: 12545 Comm: segctord Not tainted 5.10.0-rc4-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
RIP: 0010:inode_to_wb include/linux/backing-dev.h:283 [inline]
RIP: 0010:account_page_dirtied+0x763/0x9d0 mm/page-writeback.c:2430
Code: a8 01 00 00 be ff ff ff ff 48 8d 78 70 e8 f5 10 51 07 31 ff 89 c3 89 c6 e8 1a cc da ff 85 db 0f 85 be fa ff ff e8 bd d3 da ff <0f> 0b e9 b2 fa ff ff e8 b1 d3 da ff 48 89 ee 4c 89 ef e8 e6 fe 32
RSP: 0018:ffffc90001c57888 EFLAGS: 00010093
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81955da6
RDX: ffff888070c39c40 RSI: ffffffff81955db3 RDI: 0000000000000005
RBP: ffffea0001ba9e40 R08: 0000000000000000 R09: ffffffff8cecdb8f
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880679c44d0
R13: ffff8880679c4328 R14: ffff8880679c4178 R15: ffffea0001ba9e48
FS:  0000000000000000(0000) GS:ffff88802cb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000072f678 CR3: 0000000067059000 CR4: 0000000000350ee0
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:630
 nilfs_segctor_apply_buffers+0x14a/0x470 fs/nilfs2/segment.c:1014
 nilfs_segctor_scan_file+0x3e4/0x700 fs/nilfs2/segment.c:1063
 nilfs_segctor_collect_blocks fs/nilfs2/segment.c:1229 [inline]
 nilfs_segctor_collect fs/nilfs2/segment.c:1499 [inline]
 nilfs_segctor_do_construct+0x16ee/0x6b10 fs/nilfs2/segment.c:2041
 nilfs_segctor_construct+0x7a7/0xb30 fs/nilfs2/segment.c:2377
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2485 [inline]
 nilfs_segctor_thread+0x3c3/0xf90 fs/nilfs2/segment.c:2568
 kthread+0x3af/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296