NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds ------------[ cut here ]------------ WARNING: CPU: 0 PID: 8481 at include/linux/backing-dev.h:283 inode_to_wb include/linux/backing-dev.h:283 [inline] WARNING: CPU: 0 PID: 8481 at include/linux/backing-dev.h:283 account_page_dirtied+0x773/0xc00 mm/page-writeback.c:2430 Modules linked in: CPU: 0 PID: 8481 Comm: segctord Not tainted 5.12.0-rc6-next-20210409-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+0x773/0xc00 mm/page-writeback.c:2430 Code: a8 01 00 00 be ff ff ff ff 48 8d 78 70 e8 75 89 74 07 31 ff 89 c3 89 c6 e8 2a 3f d9 ff 85 db 0f 85 b0 fa ff ff e8 6d 37 d9 ff <0f> 0b e9 a4 fa ff ff e8 61 37 d9 ff 48 8d 7d 08 48 b8 00 00 00 00 RSP: 0018:ffffc9000100f880 EFLAGS: 00010093 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88801b963900 RSI: ffffffff819af8c3 RDI: 0000000000000003 RBP: ffffea00004cfb40 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff819af8b6 R11: 0000000000000000 R12: ffff888035250488 R13: ffff8880352502e0 R14: ffff888035250138 R15: ffffea00004cfb48 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000557036e36bc8 CR3: 0000000014a68000 CR4: 00000000001506f0 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+0x496/0x5e0 fs/buffer.c:1170 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