------------[ cut here ]------------
WARNING: CPU: 1 PID: 8415 at include/linux/backing-dev.h:283 inode_to_wb include/linux/backing-dev.h:283 [inline]
WARNING: CPU: 1 PID: 8415 at include/linux/backing-dev.h:283 account_page_dirtied+0x750/0x9d0 mm/page-writeback.c:2430
Modules linked in:
CPU: 1 PID: 8415 Comm: segctord Not tainted 5.11.0-rc6-syzkaller-00274-g825b5991a46e #0
Hardware name: linux,dummy-virt (DT)
pstate: 10000085 (nzcV daIf -PAN -UAO -TCO BTYPE=--)
pc : inode_to_wb include/linux/backing-dev.h:283 [inline]
pc : account_page_dirtied+0x750/0x9d0 mm/page-writeback.c:2430
lr : lock_is_held include/linux/lockdep.h:271 [inline]
lr : inode_to_wb include/linux/backing-dev.h:283 [inline]
lr : account_page_dirtied+0x74c/0x9d0 mm/page-writeback.c:2430
sp : ffff000030dcf600
x29: ffff000030dcf600 x28: 0000000000000002 
x27: ffff000019a64000 x26: ffff80001180bd60 
x25: 1fffe00006584a55 x24: ffff000032c25460 
x23: ffff8000511d3000 x22: ffff000032c25608 
x21: 1fffe00006584ac1 x20: ffff800019180000 
x19: fffffc0000397b40 x18: ffff00006a29eb48 
x17: 0000000000000000 x16: 00000000f1f1f1f1 
x15: ffff80001b00a010 x14: 1fffe000061b9e88 
x13: 0000000000000000 x12: ffff6000061b9ebd 
x11: 1fffe000061b9ebc x10: ffff6000061b9ebc 
x9 : dfff800000000000 x8 : 0000000000000003 
x7 : 0000000000000001 x6 : 0000000000000004 
x5 : ffff000030dcf5e0 x4 : 0000000000000001 
x3 : 1fffe00001d1b671 x2 : 0000000000000003 
x1 : 0000000000000000 x0 : 0000000000000000 
Call trace:
 inode_to_wb include/linux/backing-dev.h:283 [inline]
 account_page_dirtied+0x750/0x9d0 mm/page-writeback.c:2430
 __set_page_dirty+0x68/0x230 fs/buffer.c:608
 mark_buffer_dirty+0x214/0x61c fs/buffer.c:1137
 nilfs_btree_propagate_p fs/nilfs2/btree.c:1890 [inline]
 nilfs_btree_propagate+0x424/0x9b0 fs/nilfs2/btree.c:2086
 nilfs_bmap_propagate+0x6c/0x130 fs/nilfs2/bmap.c:337
 nilfs_collect_dat_data+0x48/0xc0 fs/nilfs2/segment.c:625
 nilfs_segctor_apply_buffers+0x114/0x310 fs/nilfs2/segment.c:1009
 nilfs_segctor_scan_file+0x2e0/0x4d0 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+0xeb0/0x49f4 fs/nilfs2/segment.c:2036
 nilfs_segctor_construct+0x4e4/0x750 fs/nilfs2/segment.c:2372
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2480 [inline]
 nilfs_segctor_thread+0x2a4/0xa34 fs/nilfs2/segment.c:2563
 kthread+0x320/0x3c0 kernel/kthread.c:292
 ret_from_fork+0x10/0x3c arch/arm64/kernel/entry.S:958