[ 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 '10.128.15.219' (ECDSA) to the list of known hosts. syzkaller login: [ 34.770106] IPVS: ftp: loaded support on port[0] = 21 executing program [ 34.861792] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 34.871911] audit: type=1800 audit(1672694904.248:2): pid=8133 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor135" name="bus" dev="loop0" ino=18 res=0 [ 34.899490] WARNING: CPU: 0 PID: 8158 at include/linux/backing-dev.h:340 account_page_dirtied+0x8cc/0xbb0 [ 34.909268] Kernel panic - not syncing: panic_on_warn set ... [ 34.909268] [ 34.916616] CPU: 0 PID: 8158 Comm: segctord Not tainted 4.19.211-syzkaller #0 [ 34.923872] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 34.933290] Call Trace: [ 34.935878] dump_stack+0x1fc/0x2ef [ 34.939499] panic+0x26a/0x50e [ 34.942681] ? __warn_printk+0xf3/0xf3 [ 34.946564] ? account_page_dirtied+0x8cc/0xbb0 [ 34.951256] ? __probe_kernel_read+0x130/0x1b0 [ 34.955818] ? __warn.cold+0x5/0x5a [ 34.959430] ? __warn+0xe4/0x200 [ 34.962777] ? account_page_dirtied+0x8cc/0xbb0 [ 34.967465] __warn.cold+0x20/0x5a [ 34.970992] ? account_page_dirtied+0x8cc/0xbb0 [ 34.975641] report_bug+0x262/0x2b0 [ 34.979254] do_error_trap+0x1d7/0x310 [ 34.983212] ? math_error+0x310/0x310 [ 34.986995] ? nilfs_segctor_construct+0x764/0xae0 [ 34.991916] ? nilfs_segctor_thread+0x3cb/0xf50 [ 34.996573] ? mark_held_locks+0xf0/0xf0 [ 35.000614] ? error_entry+0x72/0xd0 [ 35.004313] ? trace_hardirqs_off_caller+0x2c/0x210 [ 35.009312] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.014138] invalid_op+0x14/0x20 [ 35.017572] RIP: 0010:account_page_dirtied+0x8cc/0xbb0 [ 35.022826] 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 [ 35.041706] RSP: 0018:ffff8880b13cf868 EFLAGS: 00010093 [ 35.047048] RAX: ffff8880b1354540 RBX: 0000000000000000 RCX: ffffffff817fd2ef [ 35.054298] RDX: 0000000000000000 RSI: ffffffff817fd2fc RDI: 0000000000000005 [ 35.061553] RBP: ffff88808dffcb48 R08: 0000000000000000 R09: 0000000000000000 [ 35.068807] R10: 0000000000000005 R11: 0000000000000000 R12: ffffea00026caf40 [ 35.076061] R13: ffff88808dffc9c0 R14: ffff88808dffc838 R15: ffffea00026caf48 [ 35.083325] ? account_page_dirtied+0x8bf/0xbb0 [ 35.087977] ? account_page_dirtied+0x8cc/0xbb0 [ 35.092629] ? account_page_dirtied+0x8cc/0xbb0 [ 35.097282] __set_page_dirty+0x7f/0x3e0 [ 35.101325] ? lock_page_memcg+0xa7/0x220 [ 35.105454] mark_buffer_dirty+0x424/0x5c0 [ 35.109675] nilfs_btree_propagate+0x728/0xd80 [ 35.114243] nilfs_bmap_propagate+0x73/0x170 [ 35.118632] nilfs_collect_dat_data+0x45/0xd0 [ 35.123107] nilfs_segctor_apply_buffers+0x14a/0x490 [ 35.128191] ? nilfs_collect_file_bmap+0x70/0x70 [ 35.132935] nilfs_segctor_scan_file+0x475/0x6f0 [ 35.137679] ? nilfs_collect_file_data+0xd0/0xd0 [ 35.142426] ? check_preemption_disabled+0x41/0x280 [ 35.147428] nilfs_segctor_do_construct+0x1562/0x8360 [ 35.152607] ? nilfs_segctor_scan_file+0x6f0/0x6f0 [ 35.157521] ? lock_downgrade+0x720/0x720 [ 35.161649] ? lock_acquire+0x170/0x3c0 [ 35.165604] ? nilfs_segctor_confirm+0xe1/0x180 [ 35.170263] ? do_raw_spin_unlock+0x171/0x230 [ 35.174740] ? _raw_spin_unlock+0x29/0x40 [ 35.178869] nilfs_segctor_construct+0x764/0xae0 [ 35.183612] nilfs_segctor_thread+0x3cb/0xf50 [ 35.188093] ? nilfs_segctor_construct+0xae0/0xae0 [ 35.193004] ? __kthread_parkme+0x5d/0x1e0 [ 35.197229] ? wait_woken+0x250/0x250 [ 35.201016] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 35.205579] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 35.210665] ? __kthread_parkme+0x133/0x1e0 [ 35.214969] ? nilfs_segctor_construct+0xae0/0xae0 [ 35.219879] kthread+0x33f/0x460 [ 35.223230] ? kthread_park+0x180/0x180 [ 35.227193] ret_from_fork+0x24/0x30 [ 35.231245] Kernel Offset: disabled [ 35.234944] Rebooting in 86400 seconds..