[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.2' (ECDSA) to the list of known hosts. syzkaller login: [ 52.900618] IPVS: ftp: loaded support on port[0] = 21 executing program [ 52.964143] attempt to access beyond end of device [ 52.969186] loop0: rw=0, want=15744656570680999972, limit=2048 [ 52.982327] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 52.993597] attempt to access beyond end of device [ 52.998571] loop0: rw=0, want=15744656570680999972, limit=2048 [ 53.021896] ------------[ cut here ]------------ [ 53.026736] WARNING: CPU: 1 PID: 8007 at include/linux/backing-dev.h:335 account_page_dirtied+0x8df/0xbb0 [ 53.036415] Kernel panic - not syncing: panic_on_warn set ... [ 53.036415] [ 53.043753] CPU: 1 PID: 8007 Comm: segctord Not tainted 4.14.295-syzkaller #0 [ 53.051081] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 53.060405] Call Trace: [ 53.062969] dump_stack+0x1b2/0x281 [ 53.066572] panic+0x1f9/0x42d [ 53.069740] ? add_taint.cold+0x16/0x16 [ 53.073691] ? account_page_dirtied+0x8df/0xbb0 [ 53.078334] ? account_page_dirtied+0x8df/0xbb0 [ 53.082974] __warn.cold+0x20/0x44 [ 53.086487] ? ist_end_non_atomic+0x10/0x10 [ 53.090780] ? account_page_dirtied+0x8df/0xbb0 [ 53.095436] report_bug+0x208/0x250 [ 53.099038] do_error_trap+0x195/0x2d0 [ 53.102903] ? math_error+0x2d0/0x2d0 [ 53.106680] ? trace_hardirqs_on+0x10/0x10 [ 53.110886] ? trace_hardirqs_on+0x10/0x10 [ 53.115093] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 53.119910] invalid_op+0x1b/0x40 [ 53.123336] RIP: 0010:account_page_dirtied+0x8df/0xbb0 [ 53.128585] RSP: 0018:ffff8880b4a17908 EFLAGS: 00010097 [ 53.133921] RAX: ffff8880b2d8a680 RBX: ffff8880aec10380 RCX: 1ffffffff127a5d4 [ 53.141162] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000086 [ 53.148405] RBP: ffff88808e34db58 R08: ffffffff8ba5e5cc R09: 0000000000001d14 [ 53.155651] R10: 0000000000000001 R11: ffff8880b2d8a680 R12: ffffea0002cded40 [ 53.162897] R13: ffff88808e34d9c8 R14: ffff88808e34d9c8 R15: ffffea0002cded60 [ 53.170150] ? account_page_dirtied+0x8df/0xbb0 [ 53.174794] __set_page_dirty+0x77/0x2a0 [ 53.178827] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 53.184251] mark_buffer_dirty+0x307/0x480 [ 53.188460] nilfs_btree_propagate+0x3a3/0xc20 [ 53.193112] nilfs_bmap_propagate+0x73/0x160 [ 53.197497] nilfs_collect_dat_data+0x41/0xb0 [ 53.201964] nilfs_segctor_apply_buffers+0x191/0x450 [ 53.207038] ? nilfs_collect_file_bmap+0x70/0x70 [ 53.211769] nilfs_segctor_scan_file+0x366/0x630 [ 53.216497] ? nilfs_collect_file_data+0xb0/0xb0 [ 53.221227] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 53.226650] nilfs_segctor_do_construct+0x1420/0x78d0 [ 53.231818] ? nilfs_segctor_scan_file+0x630/0x630 [ 53.236718] ? lock_acquire+0x170/0x3f0 [ 53.240666] ? lock_downgrade+0x740/0x740 [ 53.244789] ? do_raw_spin_unlock+0x164/0x220 [ 53.249270] ? _raw_spin_unlock+0x29/0x40 [ 53.253402] nilfs_segctor_construct+0x6db/0x8e0 [ 53.258145] nilfs_segctor_thread+0x3ad/0xdb0 [ 53.262631] ? nilfs_segctor_construct+0x8e0/0x8e0 [ 53.267543] ? __schedule+0x1450/0x1de0 [ 53.271507] ? wait_woken+0x230/0x230 [ 53.275298] ? nilfs_segctor_construct+0x8e0/0x8e0 [ 53.280221] kthread+0x30d/0x420 [ 53.283569] ? kthread_create_on_node+0xd0/0xd0 [ 53.288217] ret_from_fork+0x24/0x30 [ 53.292248] Kernel Offset: disabled [ 53.296007] Rebooting in 86400 seconds..