Warning: Permanently added '10.128.1.68' (ECDSA) to the list of known hosts.
syzkaller login: [   66.487573] IPVS: ftp: loaded support on port[0] = 21
executing program
[   66.606765] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds
[   66.611309] NILFS (loop0): nilfs_palloc_commit_free_entry (ino=6): entry number 13 already freed
[   66.631841] ------------[ cut here ]------------
[   66.636714] WARNING: CPU: 0 PID: 8002 at include/linux/backing-dev.h:335 account_page_dirtied+0x8df/0xbb0
[   66.646404] Kernel panic - not syncing: panic_on_warn set ...
[   66.646404] 
[   66.653745] CPU: 0 PID: 8002 Comm: segctord Not tainted 4.14.295-syzkaller #0
[   66.660994] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
[   66.670332] Call Trace:
[   66.672905]  dump_stack+0x1b2/0x281
[   66.676513]  panic+0x1f9/0x42d
[   66.679715]  ? add_taint.cold+0x16/0x16
[   66.683671]  ? account_page_dirtied+0x8df/0xbb0
[   66.688323]  ? account_page_dirtied+0x8df/0xbb0
[   66.692972]  __warn.cold+0x20/0x44
[   66.696492]  ? ist_end_non_atomic+0x10/0x10
[   66.700792]  ? account_page_dirtied+0x8df/0xbb0
[   66.705438]  report_bug+0x208/0x250
[   66.709046]  do_error_trap+0x195/0x2d0
[   66.712914]  ? math_error+0x2d0/0x2d0
[   66.716695]  ? trace_hardirqs_on+0x10/0x10
[   66.720912]  ? trace_hardirqs_on+0x10/0x10
[   66.725127]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   66.729952]  invalid_op+0x1b/0x40
[   66.733385] RIP: 0010:account_page_dirtied+0x8df/0xbb0
[   66.738639] RSP: 0018:ffff88809d40f908 EFLAGS: 00010097
[   66.743984] RAX: ffff8880b45a6500 RBX: ffff8880af3b62c0 RCX: 1ffffffff127a5d4
[   66.751232] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000086
[   66.758480] RBP: ffff88808df2cb58 R08: ffffffff8ba5eb0c R09: 0000000000001d02
[   66.765729] R10: 0000000000000001 R11: ffff8880b45a6500 R12: ffffea0002a7e580
[   66.772978] R13: ffff88808df2c9c8 R14: ffff88808df2c9c8 R15: ffffea0002a7e5a0
[   66.780238]  ? account_page_dirtied+0x8df/0xbb0
[   66.784889]  __set_page_dirty+0x77/0x2a0
[   66.788932]  ? rcu_lockdep_current_cpu_online+0xed/0x140
[   66.794363]  mark_buffer_dirty+0x307/0x480
[   66.798584]  nilfs_btree_propagate+0x3a3/0xc20
[   66.803148]  nilfs_bmap_propagate+0x73/0x160
[   66.807533]  nilfs_collect_dat_data+0x41/0xb0
[   66.812006]  nilfs_segctor_apply_buffers+0x191/0x450
[   66.817088]  ? nilfs_collect_file_bmap+0x70/0x70
[   66.821824]  nilfs_segctor_scan_file+0x3dd/0x630
[   66.826558]  ? nilfs_collect_file_data+0xb0/0xb0
[   66.831293]  ? rcu_lockdep_current_cpu_online+0xed/0x140
[   66.836722]  nilfs_segctor_do_construct+0x1420/0x78d0
[   66.841899]  ? nilfs_segctor_scan_file+0x630/0x630
[   66.846810]  ? lock_acquire+0x170/0x3f0
[   66.850800]  ? lock_downgrade+0x740/0x740
[   66.855019]  ? do_raw_spin_unlock+0x164/0x220
[   66.859491]  ? _raw_spin_unlock+0x29/0x40
[   66.863617]  nilfs_segctor_construct+0x6db/0x8e0
[   66.868353]  nilfs_segctor_thread+0x3ad/0xdb0
[   66.872831]  ? nilfs_segctor_construct+0x8e0/0x8e0
[   66.877738]  ? __schedule+0x1450/0x1de0
[   66.881692]  ? wait_woken+0x230/0x230
[   66.885469]  ? nilfs_segctor_construct+0x8e0/0x8e0
[   66.890376]  kthread+0x30d/0x420
[   66.893720]  ? kthread_create_on_node+0xd0/0xd0
[   66.898451]  ret_from_fork+0x24/0x30
[   66.902489] Kernel Offset: disabled
[   66.906166] Rebooting in 86400 seconds..