Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.168' (ECDSA) to the list of known hosts. syzkaller login: [ 27.947003] IPVS: ftp: loaded support on port[0] = 21 executing program [ 28.032746] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 28.042435] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 28.045038] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 28.062667] Remounting filesystem read-only [ 28.068405] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 28.078204] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 28.087045] NILFS (loop0): error -5 truncating bmap (ino=16) [ 28.106337] ------------[ cut here ]------------ [ 28.111219] WARNING: CPU: 0 PID: 7972 at include/linux/backing-dev.h:335 account_page_dirtied+0x8df/0xbb0 [ 28.120900] Kernel panic - not syncing: panic_on_warn set ... [ 28.120900] [ 28.128261] CPU: 0 PID: 7972 Comm: syz-executor398 Not tainted 4.14.295-syzkaller #0 [ 28.136118] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 28.145449] Call Trace: [ 28.148019] dump_stack+0x1b2/0x281 [ 28.151630] panic+0x1f9/0x42d [ 28.154804] ? add_taint.cold+0x16/0x16 [ 28.158758] ? account_page_dirtied+0x8df/0xbb0 [ 28.163423] ? account_page_dirtied+0x8df/0xbb0 [ 28.168072] __warn.cold+0x20/0x44 [ 28.171591] ? ist_end_non_atomic+0x10/0x10 [ 28.175894] ? account_page_dirtied+0x8df/0xbb0 [ 28.180543] report_bug+0x208/0x250 [ 28.184150] do_error_trap+0x195/0x2d0 [ 28.188016] ? math_error+0x2d0/0x2d0 [ 28.191797] ? deactivate_locked_super+0x6c/0xd0 [ 28.196532] ? deactivate_super+0x7f/0xa0 [ 28.200659] ? cleanup_mnt+0x186/0x2c0 [ 28.204529] ? trace_hardirqs_on+0x10/0x10 [ 28.208741] ? trace_hardirqs_on+0x10/0x10 [ 28.212954] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.217777] invalid_op+0x1b/0x40 [ 28.221207] RIP: 0010:account_page_dirtied+0x8df/0xbb0 [ 28.226458] RSP: 0018:ffff88809661f640 EFLAGS: 00010097 [ 28.231804] RAX: ffff888095b7e000 RBX: ffff8880aed43400 RCX: 1ffffffff127a5d4 [ 28.239051] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000086 [ 28.246298] RBP: ffff88808db40b58 R08: ffffffff8ba5d75c R09: 0000000000001cda [ 28.253544] R10: 0000000000000001 R11: ffff888095b7e000 R12: ffffea0002cb8180 [ 28.260790] R13: ffff88808db409c8 R14: ffff88808db409c8 R15: ffffea0002cb81a0 [ 28.268049] __set_page_dirty+0x77/0x2a0 [ 28.272089] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.277519] mark_buffer_dirty+0x307/0x480 [ 28.281735] nilfs_btree_propagate+0x3a3/0xc20 [ 28.286302] nilfs_bmap_propagate+0x73/0x160 [ 28.290688] nilfs_collect_dat_data+0x41/0xb0 [ 28.295251] nilfs_segctor_apply_buffers+0x191/0x450 [ 28.300339] ? nilfs_collect_file_bmap+0x70/0x70 [ 28.305597] nilfs_segctor_scan_file+0x366/0x630 [ 28.310334] ? nilfs_collect_file_data+0xb0/0xb0 [ 28.315070] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.320500] nilfs_segctor_do_construct+0x1420/0x78d0 [ 28.325679] ? nilfs_segctor_scan_file+0x630/0x630 [ 28.330588] ? lock_acquire+0x170/0x3f0 [ 28.334538] ? lock_downgrade+0x740/0x740 [ 28.338668] ? do_raw_spin_unlock+0x164/0x220 [ 28.343142] ? _raw_spin_unlock+0x29/0x40 [ 28.347269] nilfs_segctor_construct+0x6db/0x8e0 [ 28.352092] nilfs_detach_log_writer+0x398/0x980 [ 28.356828] ? nilfs_clean_segments+0x990/0x990 [ 28.361491] ? dispose_list+0x11c/0x1e0 [ 28.365452] ? wait_woken+0x230/0x230 [ 28.369273] ? dispose_list+0x1e0/0x1e0 [ 28.373261] nilfs_put_super+0x3f/0x190 [ 28.377211] ? nilfs_freeze+0xb0/0xb0 [ 28.380988] generic_shutdown_super+0x144/0x370 [ 28.385633] kill_block_super+0x95/0xe0 [ 28.389584] deactivate_locked_super+0x6c/0xd0 [ 28.394145] deactivate_super+0x7f/0xa0 [ 28.398097] cleanup_mnt+0x186/0x2c0 [ 28.401789] task_work_run+0x11f/0x190 [ 28.405655] do_exit+0xa44/0x2850 [ 28.409088] ? __do_page_fault+0x571/0xad0 [ 28.413300] ? mm_update_next_owner+0x5b0/0x5b0 [ 28.417948] ? lock_downgrade+0x740/0x740 [ 28.422075] do_group_exit+0x100/0x2e0 [ 28.425943] SyS_exit_group+0x19/0x20 [ 28.429721] ? do_group_exit+0x2e0/0x2e0 [ 28.433758] do_syscall_64+0x1d5/0x640 [ 28.437624] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.442792] RIP: 0033:0x7f131d79bb89 [ 28.446478] RSP: 002b:00007ffec92d8b38 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 28.454163] RAX: ffffffffffffffda RBX: 00007f131d813330 RCX: 00007f131d79bb89 [ 28.461421] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 28.468672] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007f131d80de40 [ 28.475920] R10: 00007ffec92d8a50 R11: 0000000000000246 R12: 00007f131d813330 [ 28.483175] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 28.490787] Kernel Offset: disabled [ 28.494467] Rebooting in 86400 seconds..