[ 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 '10.128.1.228' (ECDSA) to the list of known hosts. syzkaller login: [ 31.402644] IPVS: ftp: loaded support on port[0] = 21 executing program [ 31.520842] audit: type=1800 audit(1677681286.338:2): pid=8103 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor335" name="bus" dev="loop0" ino=18 res=0 [ 31.531994] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 31.555854] WARNING: CPU: 0 PID: 8128 at include/linux/backing-dev.h:340 account_page_dirtied+0x8cc/0xbb0 [ 31.565614] Kernel panic - not syncing: panic_on_warn set ... [ 31.565614] [ 31.572960] CPU: 0 PID: 8128 Comm: segctord Not tainted 4.19.211-syzkaller #0 [ 31.580204] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 [ 31.589530] Call Trace: [ 31.592093] dump_stack+0x1fc/0x2ef [ 31.595699] panic+0x26a/0x50e [ 31.598867] ? __warn_printk+0xf3/0xf3 [ 31.602733] ? account_page_dirtied+0x8cc/0xbb0 [ 31.607378] ? __probe_kernel_read+0x130/0x1b0 [ 31.611936] ? __warn.cold+0x5/0x5a [ 31.615537] ? __warn+0xe4/0x200 [ 31.618878] ? account_page_dirtied+0x8cc/0xbb0 [ 31.623524] __warn.cold+0x20/0x5a [ 31.627052] ? account_page_dirtied+0x8cc/0xbb0 [ 31.631712] report_bug+0x262/0x2b0 [ 31.635316] do_error_trap+0x1d7/0x310 [ 31.639176] ? math_error+0x310/0x310 [ 31.642951] ? nilfs_segctor_construct+0x764/0xae0 [ 31.647865] ? nilfs_segctor_thread+0x3cb/0xf50 [ 31.652512] ? mark_held_locks+0xf0/0xf0 [ 31.656546] ? error_entry+0x72/0xd0 [ 31.660232] ? trace_hardirqs_off_caller+0x2c/0x210 [ 31.665236] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.670059] invalid_op+0x14/0x20 [ 31.673489] RIP: 0010:account_page_dirtied+0x8cc/0xbb0 [ 31.678742] Code: 88 01 00 00 be ff ff ff ff 48 8d 78 70 e8 ec e1 ca ff 31 ff 89 c3 89 c6 e8 f1 b3 e2 ff 85 db 0f 85 39 f9 ff ff e8 74 b2 e2 ff <0f> 0b e9 2d f9 ff ff e8 68 b2 e2 ff 4c 89 e6 4c 89 ef e8 9d b3 2d [ 31.697622] RSP: 0018:ffff88809b057868 EFLAGS: 00010093 [ 31.702964] RAX: ffff888095aae0c0 RBX: 0000000000000000 RCX: ffffffff817fd2ef [ 31.710211] RDX: 0000000000000000 RSI: ffffffff817fd2fc RDI: 0000000000000005 [ 31.717456] RBP: ffff88808a412b48 R08: 0000000000000000 R09: 0000000000000000 [ 31.724704] R10: 0000000000000005 R11: 0000000000000000 R12: ffffea0002ab8800 [ 31.731949] R13: ffff88808a4129c0 R14: ffff88808a412838 R15: ffffea0002ab8808 [ 31.739203] ? account_page_dirtied+0x8bf/0xbb0 [ 31.743849] ? account_page_dirtied+0x8cc/0xbb0 [ 31.748496] ? account_page_dirtied+0x8cc/0xbb0 [ 31.753146] __set_page_dirty+0x7f/0x3e0 [ 31.757183] ? lock_page_memcg+0xa7/0x220 [ 31.761306] mark_buffer_dirty+0x424/0x5c0 [ 31.765519] nilfs_btree_propagate+0x728/0xd80 [ 31.770080] nilfs_bmap_propagate+0x73/0x170 [ 31.774469] nilfs_collect_dat_data+0x45/0xd0 [ 31.778954] nilfs_segctor_apply_buffers+0x14a/0x490 [ 31.784042] ? nilfs_collect_file_bmap+0x70/0x70 [ 31.788776] nilfs_segctor_scan_file+0x475/0x6f0 [ 31.793509] ? nilfs_collect_file_data+0xd0/0xd0 [ 31.798245] ? check_preemption_disabled+0x41/0x280 [ 31.803241] nilfs_segctor_do_construct+0x1562/0x8360 [ 31.808418] ? nilfs_segctor_scan_file+0x6f0/0x6f0 [ 31.813327] ? lock_downgrade+0x720/0x720 [ 31.817450] ? lock_acquire+0x170/0x3c0 [ 31.821398] ? nilfs_segctor_confirm+0xe1/0x180 [ 31.826043] ? do_raw_spin_unlock+0x171/0x230 [ 31.830517] ? _raw_spin_unlock+0x29/0x40 [ 31.834645] nilfs_segctor_construct+0x764/0xae0 [ 31.839385] nilfs_segctor_thread+0x3cb/0xf50 [ 31.843875] ? nilfs_segctor_construct+0xae0/0xae0 [ 31.848782] ? __kthread_parkme+0x5d/0x1e0 [ 31.852995] ? wait_woken+0x250/0x250 [ 31.856789] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 31.861346] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 31.866443] ? __kthread_parkme+0x133/0x1e0 [ 31.870753] ? nilfs_segctor_construct+0xae0/0xae0 [ 31.875670] kthread+0x33f/0x460 [ 31.879010] ? kthread_park+0x180/0x180 [ 31.882959] ret_from_fork+0x24/0x30 [ 31.887058] Kernel Offset: disabled [ 31.890735] Rebooting in 86400 seconds..