NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds ------------[ cut here ]------------ WARNING: CPU: 0 PID: 12017 at include/linux/backing-dev.h:286 inode_to_wb include/linux/backing-dev.h:283 [inline] WARNING: CPU: 0 PID: 12017 at include/linux/backing-dev.h:286 account_page_dirtied+0x3c2/0x480 mm/page-writeback.c:2430 Modules linked in: CPU: 0 PID: 12017 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+0x3c2/0x480 mm/page-writeback.c:2430 Code: 5d 41 5e 41 5f 5d c3 e8 7c cd d6 ff 4c 89 f7 4c 89 fe 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d e9 a3 cf 22 00 e8 5e cd d6 ff <0f> 0b 43 80 3c 2c 00 0f 85 87 fe ff ff e9 8a fe ff ff 89 d9 80 e1 RSP: 0018:ffffc90002b47380 EFLAGS: 00010093 RAX: ffffffff81a80a02 RBX: ffff88807f340490 RCX: ffff888017d50000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff81a80882 R09: fffffbfff1c2cd1e R10: fffffbfff1c2cd1e R11: 0000000000000000 R12: 1ffff1100fe68092 R13: dffffc0000000000 R14: ffffea000076d4c0 R15: ffff88807f340318 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30f27000 CR3: 000000007a665000 CR4: 00000000001526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __set_page_dirty+0x12a/0x380 fs/buffer.c:608 mark_buffer_dirty+0x227/0x2d0 fs/buffer.c:1137 nilfs_btree_propagate_p fs/nilfs2/btree.c:1890 [inline] nilfs_btree_propagate+0x4e1/0xd60 fs/nilfs2/btree.c:2086 nilfs_bmap_propagate+0x6d/0x120 fs/nilfs2/bmap.c:337 nilfs_collect_dat_data+0x49/0xc0 fs/nilfs2/segment.c:625 nilfs_segctor_apply_buffers fs/nilfs2/segment.c:1009 [inline] nilfs_segctor_scan_file+0xaa0/0x1fd0 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+0x245e/0x80b0 fs/nilfs2/segment.c:2036 nilfs_segctor_construct+0x143/0x8d0 fs/nilfs2/segment.c:2372 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2480 [inline] nilfs_segctor_thread+0x4ff/0x11c0 fs/nilfs2/segment.c:2563 kthread+0x39a/0x3c0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294