Warning: Permanently added '10.128.0.245' (ECDSA) to the list of known hosts. syzkaller login: [ 54.923297] IPVS: ftp: loaded support on port[0] = 21 executing program [ 55.021738] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 55.034847] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 55.049149] NILFS error (device loop0): nilfs_bmap_lookup_contig: broken bmap (inode number=16) [ 55.058906] Remounting filesystem read-only [ 55.063606] NILFS (loop0): bad btree node (ino=16, blocknr=15): level = 0, flags = 0x0, nchildren = 0 [ 55.073135] NILFS error (device loop0): nilfs_bmap_last_key: broken bmap (inode number=16) [ 55.082072] NILFS (loop0): error -5 truncating bmap (ino=16) [ 55.092685] ------------[ cut here ]------------ [ 55.097559] WARNING: CPU: 0 PID: 7983 at include/linux/backing-dev.h:335 account_page_dirtied+0x8df/0xbb0 [ 55.107250] Kernel panic - not syncing: panic_on_warn set ... [ 55.107250] [ 55.114594] CPU: 0 PID: 7983 Comm: syz-executor173 Not tainted 4.14.295-syzkaller #0 [ 55.122537] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 55.131868] Call Trace: [ 55.134437] dump_stack+0x1b2/0x281 [ 55.138047] panic+0x1f9/0x42d [ 55.141218] ? add_taint.cold+0x16/0x16 [ 55.145258] ? account_page_dirtied+0x8df/0xbb0 [ 55.149910] ? account_page_dirtied+0x8df/0xbb0 [ 55.154555] __warn.cold+0x20/0x44 [ 55.158082] ? ist_end_non_atomic+0x10/0x10 [ 55.162384] ? account_page_dirtied+0x8df/0xbb0 [ 55.167032] report_bug+0x208/0x250 [ 55.170640] do_error_trap+0x195/0x2d0 [ 55.174504] ? math_error+0x2d0/0x2d0 [ 55.178284] ? deactivate_locked_super+0x6c/0xd0 [ 55.183016] ? deactivate_super+0x7f/0xa0 [ 55.187142] ? cleanup_mnt+0x186/0x2c0 [ 55.191008] ? trace_hardirqs_on+0x10/0x10 [ 55.195218] ? trace_hardirqs_on+0x10/0x10 [ 55.199430] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 55.204253] invalid_op+0x1b/0x40 [ 55.207685] RIP: 0010:account_page_dirtied+0x8df/0xbb0 [ 55.212939] RSP: 0018:ffff8880b3797640 EFLAGS: 00010097 [ 55.218280] RAX: ffff8880b2d42500 RBX: ffff8880aeca7440 RCX: 1ffffffff127a5d4 [ 55.225528] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000086 [ 55.232780] RBP: ffff888094a64b58 R08: ffffffff8ba5e47c R09: 0000000000001cd8 [ 55.240027] R10: 0000000000000001 R11: ffff8880b2d42500 R12: ffffea0002c47800 [ 55.247275] R13: ffff888094a649c8 R14: ffff888094a649c8 R15: ffffea0002c47820 [ 55.254538] __set_page_dirty+0x77/0x2a0 [ 55.258578] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 55.264007] mark_buffer_dirty+0x307/0x480 [ 55.268220] nilfs_btree_propagate+0x3a3/0xc20 [ 55.272787] nilfs_bmap_propagate+0x73/0x160 [ 55.277171] nilfs_collect_dat_data+0x41/0xb0 [ 55.281646] nilfs_segctor_apply_buffers+0x191/0x450 [ 55.286730] ? nilfs_collect_file_bmap+0x70/0x70 [ 55.291465] nilfs_segctor_scan_file+0x366/0x630 [ 55.296199] ? nilfs_collect_file_data+0xb0/0xb0 [ 55.300935] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 55.306367] nilfs_segctor_do_construct+0x1420/0x78d0 [ 55.311545] ? nilfs_segctor_scan_file+0x630/0x630 [ 55.316469] ? lock_acquire+0x170/0x3f0 [ 55.320419] ? lock_downgrade+0x740/0x740 [ 55.324547] ? do_raw_spin_unlock+0x164/0x220 [ 55.329017] ? _raw_spin_unlock+0x29/0x40 [ 55.333141] nilfs_segctor_construct+0x6db/0x8e0 [ 55.337878] nilfs_detach_log_writer+0x398/0x980 [ 55.342633] ? nilfs_clean_segments+0x990/0x990 [ 55.347279] ? dispose_list+0x11c/0x1e0 [ 55.351233] ? wait_woken+0x230/0x230 [ 55.355012] ? dispose_list+0x1e0/0x1e0 [ 55.358966] nilfs_put_super+0x3f/0x190 [ 55.362928] ? nilfs_freeze+0xb0/0xb0 [ 55.366720] generic_shutdown_super+0x144/0x370 [ 55.371369] kill_block_super+0x95/0xe0 [ 55.375320] deactivate_locked_super+0x6c/0xd0 [ 55.379905] deactivate_super+0x7f/0xa0 [ 55.383858] cleanup_mnt+0x186/0x2c0 [ 55.387551] task_work_run+0x11f/0x190 [ 55.391421] do_exit+0xa44/0x2850 [ 55.394863] ? __do_page_fault+0x571/0xad0 [ 55.399162] ? mm_update_next_owner+0x5b0/0x5b0 [ 55.403806] ? lock_downgrade+0x740/0x740 [ 55.407943] do_group_exit+0x100/0x2e0 [ 55.411811] SyS_exit_group+0x19/0x20 [ 55.415593] ? do_group_exit+0x2e0/0x2e0 [ 55.419630] do_syscall_64+0x1d5/0x640 [ 55.423497] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 55.428675] RIP: 0033:0x7f2be2055bc9 [ 55.432364] RSP: 002b:00007ffd4f4c6da8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 55.440065] RAX: ffffffffffffffda RBX: 00007f2be20cd330 RCX: 00007f2be2055bc9 [ 55.447315] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 55.454650] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007f2be20c7e40 [ 55.461901] R10: 00007ffd4f4c6cc0 R11: 0000000000000246 R12: 00007f2be20cd330 [ 55.469148] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 55.476683] Kernel Offset: disabled [ 55.480357] Rebooting in 86400 seconds..