[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.125' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 28.235415] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 28.246642] NILFS error (device loop0): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=0, inode=0, rec_len=0, name_len=0 [ 28.262235] Remounting filesystem read-only [ 28.268702] ------------[ cut here ]------------ [ 28.273527] WARNING: CPU: 1 PID: 7986 at include/linux/backing-dev.h:335 account_page_dirtied+0x8df/0xbb0 [ 28.283207] Kernel panic - not syncing: panic_on_warn set ... [ 28.283207] [ 28.290549] CPU: 1 PID: 7986 Comm: syz-executor142 Not tainted 4.14.295-syzkaller #0 [ 28.300401] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 [ 28.309731] Call Trace: [ 28.312315] dump_stack+0x1b2/0x281 [ 28.316875] panic+0x1f9/0x42d [ 28.320041] ? add_taint.cold+0x16/0x16 [ 28.323993] ? account_page_dirtied+0x8df/0xbb0 [ 28.328639] ? account_page_dirtied+0x8df/0xbb0 [ 28.333283] __warn.cold+0x20/0x44 [ 28.336798] ? ist_end_non_atomic+0x10/0x10 [ 28.341094] ? account_page_dirtied+0x8df/0xbb0 [ 28.345739] report_bug+0x208/0x250 [ 28.349343] do_error_trap+0x195/0x2d0 [ 28.353206] ? math_error+0x2d0/0x2d0 [ 28.356983] ? trace_hardirqs_on+0x10/0x10 [ 28.361195] ? trace_hardirqs_on+0x10/0x10 [ 28.365404] ? trace_hardirqs_on+0x10/0x10 [ 28.369617] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.374444] invalid_op+0x1b/0x40 [ 28.377874] RIP: 0010:account_page_dirtied+0x8df/0xbb0 [ 28.383134] RSP: 0018:ffff88808ca3f2e0 EFLAGS: 00010097 [ 28.388471] RAX: ffff888096324480 RBX: ffff8880aec4e280 RCX: 1ffffffff127a5d4 [ 28.395716] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000086 [ 28.402984] RBP: ffff88808dbcf4b8 R08: ffffffff8b9c5098 R09: 00000000000c023a [ 28.410229] R10: ffff888096324df8 R11: ffff888096324480 R12: ffffea0002cc8100 [ 28.417474] R13: ffff88808dbcf328 R14: ffff88808dbcf328 R15: ffffea0002cc8120 [ 28.424733] __set_page_dirty+0x77/0x2a0 [ 28.428773] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.434203] mark_buffer_dirty+0x307/0x480 [ 28.438416] nilfs_btree_convert_and_insert+0xd33/0x1070 [ 28.443846] ? up_read+0x17/0x30 [ 28.447186] ? nilfs_btree_last_key+0x560/0x560 [ 28.451834] ? lock_acquire+0x170/0x3f0 [ 28.455785] ? nilfs_bmap_insert+0x81/0x380 [ 28.460085] nilfs_bmap_insert+0x242/0x380 [ 28.464298] ? nilfs_bmap_lookup_contig+0x170/0x170 [ 28.469296] ? nilfs_ifile_read+0x170/0x170 [ 28.473593] nilfs_mdt_get_block+0x4a1/0xb90 [ 28.477981] ? nilfs_ifile_read+0x170/0x170 [ 28.482281] ? nilfs_mdt_read_block+0x320/0x320 [ 28.486926] ? lock_downgrade+0x740/0x740 [ 28.491053] ? nilfs_ifile_read+0x170/0x170 [ 28.495354] nilfs_palloc_get_block+0xb2/0x250 [ 28.499917] nilfs_palloc_prepare_alloc_entry+0x235/0x950 [ 28.505440] ? nilfs_palloc_count_max_entries+0x240/0x240 [ 28.510966] ? new_inode+0xc7/0xf0 [ 28.514483] nilfs_ifile_create_inode+0x74/0x1e0 [ 28.519215] ? nilfs_sufile_read+0x530/0x530 [ 28.523604] ? _raw_spin_unlock+0x29/0x40 [ 28.527728] nilfs_new_inode+0x1c4/0x6f0 [ 28.531782] ? nilfs_transaction_begin+0x221/0xa00 [ 28.536690] ? nilfs_set_inode_flags+0xb0/0xb0 [ 28.541446] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.547656] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.552685] ? nilfs_transaction_begin+0x274/0xa00 [ 28.557602] nilfs_create+0xd2/0x2a0 [ 28.561297] ? nilfs_get_dentry+0x160/0x160 [ 28.565602] ? nilfs_get_dentry+0x160/0x160 [ 28.569912] lookup_open+0x77a/0x1750 [ 28.573708] ? vfs_mkdir+0x6e0/0x6e0 [ 28.577413] path_openat+0xe08/0x2970 [ 28.581203] ? path_lookupat+0x780/0x780 [ 28.585239] ? trace_hardirqs_on+0x10/0x10 [ 28.589450] ? __lock_acquire+0x5fc/0x3f20 [ 28.593676] do_filp_open+0x179/0x3c0 [ 28.597452] ? may_open_dev+0xe0/0xe0 [ 28.601230] ? lock_downgrade+0x740/0x740 [ 28.605354] ? do_raw_spin_unlock+0x164/0x220 [ 28.610346] ? _raw_spin_unlock+0x29/0x40 [ 28.614472] ? __alloc_fd+0x1be/0x490 [ 28.620246] do_sys_open+0x296/0x410 [ 28.623938] ? filp_open+0x60/0x60 [ 28.627455] ? __close_fd+0x159/0x230 [ 28.631240] ? do_syscall_64+0x4c/0x640 [ 28.635190] ? compat_SyS_openat+0x30/0x30 [ 28.639401] do_syscall_64+0x1d5/0x640 [ 28.643270] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.648529] RIP: 0033:0x7fde09840309 [ 28.652216] RSP: 002b:00007ffe1a7b9ca8 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 [ 28.659898] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fde09840309 [ 28.667144] RDX: 00007fde097fe8a3 RSI: 0000000000000000 RDI: 0000000020000040 [ 28.674389] RBP: 00007fde097ffb70 R08: 0000555555ad22c0 R09: 0000000000000000 [ 28.681807] R10: 00007ffe1a7b9b70 R11: 0000000000000246 R12: 00007fde097ffc00 [ 28.689054] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 28.696716] Kernel Offset: disabled [ 28.700380] Rebooting in 86400 seconds..