[ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ 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 '10.128.0.229' (ECDSA) to the list of known hosts. syzkaller login: [ 33.320875] IPVS: ftp: loaded support on port[0] = 21 executing program [ 33.410970] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 33.443897] WARNING: CPU: 1 PID: 8143 at include/linux/backing-dev.h:340 account_page_dirtied+0x8cc/0xbb0 [ 33.453709] Kernel panic - not syncing: panic_on_warn set ... [ 33.453709] [ 33.461064] CPU: 1 PID: 8143 Comm: segctord Not tainted 4.19.211-syzkaller #0 [ 33.468329] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 33.477678] Call Trace: [ 33.480268] dump_stack+0x1fc/0x2ef [ 33.483883] panic+0x26a/0x50e [ 33.487065] ? __warn_printk+0xf3/0xf3 [ 33.490943] ? account_page_dirtied+0x8cc/0xbb0 [ 33.495601] ? __probe_kernel_read+0x130/0x1b0 [ 33.500173] ? __warn.cold+0x5/0x5a [ 33.503791] ? __warn+0xe4/0x200 [ 33.507165] ? account_page_dirtied+0x8cc/0xbb0 [ 33.511838] __warn.cold+0x20/0x5a [ 33.515370] ? account_page_dirtied+0x8cc/0xbb0 [ 33.520033] report_bug+0x262/0x2b0 [ 33.523660] do_error_trap+0x1d7/0x310 [ 33.527639] ? math_error+0x310/0x310 [ 33.531440] ? nilfs_segctor_construct+0x764/0xae0 [ 33.536379] ? nilfs_segctor_thread+0x3cb/0xf50 [ 33.541042] ? mark_held_locks+0xf0/0xf0 [ 33.545094] ? error_entry+0x72/0xd0 [ 33.548798] ? trace_hardirqs_off_caller+0x2c/0x210 [ 33.553804] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.558637] invalid_op+0x14/0x20 [ 33.562081] RIP: 0010:account_page_dirtied+0x8cc/0xbb0 [ 33.567345] 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 [ 33.586232] RSP: 0000:ffff88809ec1f868 EFLAGS: 00010093 [ 33.591582] RAX: ffff8880b07fc380 RBX: 0000000000000000 RCX: ffffffff817fd2ef [ 33.598843] RDX: 0000000000000000 RSI: ffffffff817fd2fc RDI: 0000000000000005 [ 33.606187] RBP: ffff88808db02b48 R08: 0000000000000000 R09: 0000000000000000 [ 33.613538] R10: 0000000000000005 R11: 0000000000000000 R12: ffffea00026bc680 [ 33.620878] R13: ffff88808db029c0 R14: ffff88808db02838 R15: ffffea00026bc688 [ 33.628159] ? account_page_dirtied+0x8bf/0xbb0 [ 33.632814] ? account_page_dirtied+0x8cc/0xbb0 [ 33.637470] ? account_page_dirtied+0x8cc/0xbb0 [ 33.642130] __set_page_dirty+0x7f/0x3e0 [ 33.646177] ? lock_page_memcg+0xa7/0x220 [ 33.650311] mark_buffer_dirty+0x424/0x5c0 [ 33.654536] nilfs_btree_propagate+0x728/0xd80 [ 33.659131] nilfs_bmap_propagate+0x73/0x170 [ 33.663558] nilfs_collect_dat_data+0x45/0xd0 [ 33.668055] nilfs_segctor_apply_buffers+0x14a/0x490 [ 33.673167] ? nilfs_collect_file_bmap+0x70/0x70 [ 33.677929] nilfs_segctor_scan_file+0x475/0x6f0 [ 33.682681] ? nilfs_collect_file_data+0xd0/0xd0 [ 33.687441] ? check_preemption_disabled+0x41/0x280 [ 33.692458] nilfs_segctor_do_construct+0x1562/0x8360 [ 33.697661] ? nilfs_segctor_scan_file+0x6f0/0x6f0 [ 33.702672] ? lock_downgrade+0x720/0x720 [ 33.706811] ? lock_acquire+0x170/0x3c0 [ 33.710776] ? nilfs_segctor_confirm+0xe1/0x180 [ 33.715433] ? do_raw_spin_unlock+0x171/0x230 [ 33.719915] ? _raw_spin_unlock+0x29/0x40 [ 33.724054] nilfs_segctor_construct+0x764/0xae0 [ 33.728816] nilfs_segctor_thread+0x3cb/0xf50 [ 33.733324] ? nilfs_segctor_construct+0xae0/0xae0 [ 33.738243] ? __kthread_parkme+0x5d/0x1e0 [ 33.742507] ? wait_woken+0x250/0x250 [ 33.746302] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 33.750874] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 33.755978] ? __kthread_parkme+0x133/0x1e0 [ 33.760313] ? nilfs_segctor_construct+0xae0/0xae0 [ 33.765239] kthread+0x33f/0x460 [ 33.768596] ? kthread_park+0x180/0x180 [ 33.772562] ret_from_fork+0x24/0x30 [ 33.776516] Kernel Offset: disabled [ 33.780194] Rebooting in 86400 seconds..