[ 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... Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.29' (ECDSA) to the list of known hosts. syzkaller login: [ 477.448426][ T8522] ntfs: (device loop0): is_boot_sector_ntfs(): Invalid end of sector marker. [ 477.461231][ T8522] ntfs: (device loop0): map_mft_record_page(): Mft record 0x1 is corrupt. Run chkdsk. [ 477.470979][ T8522] ntfs: (device loop0): map_mft_record(): Failed with error code 5. [ 477.479077][ T8522] ntfs: (device loop0): ntfs_read_locked_inode(): Failed with error code -5. Marking corrupt inode 0x1 as bad. Run chkdsk. [ 477.492187][ T8522] ntfs: (device loop0): load_system_files(): Failed to load $MFTMirr. Mounting read-only. Run ntfsfix and/or chkdsk. [ 477.505969][ T8522] ntfs: (device loop0): map_mft_record_page(): Mft record 0xa is corrupt. Run chkdsk. [ 477.515705][ T8522] ntfs: (device loop0): map_mft_record(): Failed with error code 5. [ 477.523852][ T8522] ntfs: (device loop0): ntfs_read_locked_inode(): Failed with error code -5. Marking corrupt inode 0xa as bad. Run chkdsk. [ 477.537046][ T8522] ntfs: (device loop0): load_and_init_upcase(): Failed to load $UpCase from the volume. Using default. [ 477.549434][ T8522] ntfs: volume version 3.1. [ 477.554003][ T8522] ntfs: (device loop0): map_mft_record_page(): Mft record 0x2 is corrupt. Run chkdsk. [ 637.142562][ T1657] INFO: task syz-executor705:8522 can't die for more than 143 seconds. [ 637.151072][ T1657] task:syz-executor705 state:R running task stack:27448 pid: 8522 ppid: 8521 flags:0x00004006 [ 637.166445][ T1657] Call Trace: [ 637.169936][ T1657] ? kvm_sched_clock_read+0x14/0x40 [ 637.177332][ T1657] ? sched_clock+0x2a/0x40 [ 637.181849][ T1657] ? sched_clock_cpu+0x18/0x1f0 [ 637.188024][ T1657] ? kvm_sched_clock_read+0x14/0x40 [ 637.194297][ T1657] ? kvm_sched_clock_read+0x14/0x40 [ 637.199500][ T1657] ? sched_clock+0x2a/0x40 [ 637.205248][ T1657] ? kvm_sched_clock_read+0x14/0x40 [ 637.210462][ T1657] ? sched_clock+0x2a/0x40 [ 637.216350][ T1657] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 637.223316][ T1657] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 637.229559][ T1657] ? ntfs_collate_names+0x285/0x3d0 [ 637.235951][ T1657] ? ntfs_collate_names+0x3f/0x3d0 [ 637.241072][ T1657] ? ntfs_collate_names+0x244/0x3d0 [ 637.247421][ T1657] ? ntfs_are_names_equal+0x7f/0x1a0 [ 637.253664][ T1657] ? ntfs_lookup_inode_by_name+0x5f0/0x33f0 [ 637.259587][ T1657] ? __ntfs_warning+0x116/0x160 [ 637.265590][ T1657] ? ntfs_read_compressed_block+0x3a80/0x3a80 [ 637.271669][ T1657] ? load_and_init_usnjrnl+0xda/0x1180 [ 637.278368][ T1657] ? load_and_init_quota+0x17a/0x3e0 [ 637.284423][ T1657] ? ntfs_remount+0x560/0x560 [ 637.289104][ T1657] ? ntfs_write_volume_flags+0x3b0/0x3b0 [ 637.297094][ T1657] ? ntfs_fill_super+0x7fd2/0x8560 [ 637.303478][ T1657] ? load_and_init_usnjrnl+0x1180/0x1180 [ 637.309255][ T1657] ? vsprintf+0x30/0x30 [ 637.314740][ T1657] ? wait_for_completion_io+0x260/0x260 [ 637.320393][ T1657] ? set_blocksize+0x1c1/0x400 [ 637.326460][ T1657] ? mount_bdev+0x32e/0x3f0 [ 637.330981][ T1657] ? load_and_init_usnjrnl+0x1180/0x1180 [ 637.338372][ T1657] ? ntfs_rl_punch_nolock+0x1d10/0x1d10 [ 637.344742][ T1657] ? legacy_get_tree+0x105/0x220 [ 637.349702][ T1657] ? vfs_get_tree+0x89/0x2f0 [ 637.355563][ T1657] ? path_mount+0x12ae/0x1e70 [ 637.360315][ T1657] ? strncpy_from_user+0x29e/0x3a0 [ 637.366616][ T1657] ? finish_automount+0xac0/0xac0 [ 637.371717][ T1657] ? getname_flags.part.0+0x1dd/0x4f0 [ 637.378330][ T1657] ? __x64_sys_mount+0x27f/0x300 [ 637.384172][ T1657] ? copy_mnt_ns+0xae0/0xae0 [ 637.388781][ T1657] ? syscall_enter_from_user_mode+0x1d/0x50 [ 637.395955][ T1657] ? do_syscall_64+0x2d/0x70 [ 637.400558][ T1657] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 637.408073][ T1657] [ 637.408073][ T1657] Showing all locks held in the system: [ 637.416907][ T1657] 1 lock held by khungtaskd/1657: [ 637.421940][ T1657] #0: ffffffff8b338160 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 [ 637.435825][ T1657] 1 lock held by in:imklog/8201: [ 637.440779][ T1657] #0: ffff88801b65a370 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 [ 637.451284][ T1657] 1 lock held by syz-executor705/8522: [ 637.457571][ T1657] [ 637.459909][ T1657] ============================================= [ 637.459909][ T1657] [ 637.469588][ T1657] Kernel panic - not syncing: hung_task: blocked tasks [ 637.476470][ T1657] CPU: 0 PID: 1657 Comm: khungtaskd Not tainted 5.10.0-rc1-next-20201102-syzkaller #0 [ 637.486360][ T1657] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 637.496418][ T1657] Call Trace: [ 637.499849][ T1657] dump_stack+0x107/0x163 [ 637.504239][ T1657] panic+0x306/0x73d [ 637.508133][ T1657] ? __warn_printk+0xf3/0xf3 [ 637.512739][ T1657] ? watchdog.cold+0x22d/0x248 [ 637.517564][ T1657] ? watchdog+0xc59/0xf30 [ 637.521900][ T1657] watchdog.cold+0x23e/0x248 [ 637.526492][ T1657] ? trace_sched_process_hang+0x280/0x280 [ 637.532260][ T1657] kthread+0x3af/0x4a0 [ 637.536356][ T1657] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 637.542302][ T1657] ret_from_fork+0x1f/0x30 [ 637.547626][ T1657] Kernel Offset: disabled [ 637.552071][ T1657] Rebooting in 86400 seconds..