Warning: Permanently added '10.128.0.202' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 478.739549] block nbd0: shutting down sockets [ 478.750279] print_req_error: I/O error, dev nbd0, sector 0 [ 478.756057] Buffer I/O error on dev nbd0, logical block 0, async page read [ 478.763228] print_req_error: I/O error, dev nbd0, sector 2 [ 478.768926] Buffer I/O error on dev nbd0, logical block 1, async page read [ 478.775948] Buffer I/O error on dev nbd0, logical block 2, async page read [ 478.783116] Buffer I/O error on dev nbd0, logical block 3, async page read [ 478.790604] print_req_error: I/O error, dev nbd0, sector 0 [ 478.796267] Buffer I/O error on dev nbd0, logical block 0, async page read [ 478.803432] print_req_error: I/O error, dev nbd0, sector 2 [ 478.809293] Buffer I/O error on dev nbd0, logical block 1, async page read [ 478.816434] Buffer I/O error on dev nbd0, logical block 2, async page read [ 478.823536] Buffer I/O error on dev nbd0, logical block 3, async page read [ 478.830743] print_req_error: I/O error, dev nbd0, sector 0 [ 478.836723] Buffer I/O error on dev nbd0, logical block 0, async page read [ 478.843761] print_req_error: I/O error, dev nbd0, sector 2 [ 478.849445] Buffer I/O error on dev nbd0, logical block 1, async page read [ 478.856838] print_req_error: I/O error, dev nbd0, sector 0 [ 478.862799] print_req_error: I/O error, dev nbd0, sector 0 [ 478.868555] print_req_error: I/O error, dev nbd0, sector 2 [ 478.874289] print_req_error: I/O error, dev nbd0, sector 0 [ 478.880495] ldm_validate_partition_table(): Disk read failed. executing program [ 478.887829] Dev nbd0: unable to read RDB block 0 [ 478.893537] nbd0: unable to read partition table [ 478.901327] ldm_validate_partition_table(): Disk read failed. [ 478.908455] Dev nbd0: unable to read RDB block 0 [ 478.914071] nbd0: unable to read partition table [ 478.921603] ldm_validate_partition_table(): Disk read failed. [ 478.928399] Dev nbd0: unable to read RDB block 0 [ 478.934119] nbd0: unable to read partition table [ 478.946030] ldm_validate_partition_table(): Disk read failed. [ 478.952850] Dev nbd0: unable to read RDB block 0 [ 478.959023] nbd0: unable to read partition table [ 717.615895] INFO: task syz-executor050:8120 blocked for more than 140 seconds. [ 717.623382] Not tainted 4.19.179-syzkaller #0 [ 717.629619] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 717.637673] syz-executor050 D26224 8120 8105 0x00000004 [ 717.643304] Call Trace: [ 717.645946] __schedule+0x887/0x2040 [ 717.649668] ? io_schedule_timeout+0x140/0x140 [ 717.654237] ? prepare_to_wait_exclusive+0x2d0/0x2d0 [ 717.659387] schedule+0x8d/0x1b0 [ 717.662786] blk_mq_freeze_queue_wait+0x119/0x270 [ 717.667685] ? blk_mq_poll_stats_fn+0x210/0x210 [ 717.672357] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 717.677502] ? wait_woken+0x250/0x250 [ 717.681307] ? blk_freeze_queue_start+0x124/0x200 [ 717.686218] nbd_add_socket+0x168/0x840 [ 717.690189] ? cap_capable+0x1eb/0x250 [ 717.694193] ? nbd_put+0x50/0x50 [ 717.697643] ? security_capable+0x8f/0xc0 [ 717.701810] nbd_ioctl+0x584/0xbe0 [ 717.705340] ? drop_futex_key_refs+0x6f/0xe0 [ 717.709816] ? nbd_disconnect_and_put+0x190/0x190 [ 717.714779] ? __lock_acquire+0x6de/0x3ff0 [ 717.719067] ? nbd_disconnect_and_put+0x190/0x190 [ 717.723926] blkdev_ioctl+0x5cb/0x1a80 [ 717.727871] ? blkpg_ioctl+0x9d0/0x9d0 [ 717.731821] ? do_futex+0x163/0x18a0 [ 717.735522] ? mark_held_locks+0xf0/0xf0 [ 717.739633] ? percpu_counter_add_batch+0x126/0x180 [ 717.744656] ? alloc_empty_file+0xd7/0x170 [ 717.749022] ? futex_exit_release+0x220/0x220 [ 717.753516] block_ioctl+0xe9/0x130 [ 717.757846] ? blkdev_fallocate+0x3f0/0x3f0 [ 717.762177] do_vfs_ioctl+0xcdb/0x12e0 [ 717.766721] ? lock_downgrade+0x720/0x720 [ 717.770866] ? check_preemption_disabled+0x41/0x280 [ 717.776500] ? ioctl_preallocate+0x200/0x200 [ 717.780905] ? __fget+0x356/0x510 [ 717.784341] ? do_dup2+0x450/0x450 [ 717.788730] ? __se_sys_futex+0x298/0x3b0 [ 717.792880] ksys_ioctl+0x9b/0xc0 [ 717.797610] __x64_sys_ioctl+0x6f/0xb0 [ 717.801492] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 717.806638] do_syscall_64+0xf9/0x620 [ 717.810436] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 717.815606] RIP: 0033:0x44a169 [ 717.819609] Code: Bad RIP value. [ 717.822966] RSP: 002b:00007fb1e4e15308 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 717.831291] RAX: ffffffffffffffda RBX: 00000000004cb508 RCX: 000000000044a169 [ 717.838995] RDX: 0000000000000004 RSI: 000000000000ab00 RDI: 0000000000000003 [ 717.846657] RBP: 00000000004cb500 R08: 0000000000000000 R09: 0000000000000000 [ 717.853918] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cb50c [ 717.861854] R13: 000000000049b08c R14: 64626e2f7665642f R15: 0000000000022000 [ 717.869599] INFO: task syz-executor050:8121 blocked for more than 140 seconds. [ 717.877393] Not tainted 4.19.179-syzkaller #0 [ 717.882402] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 717.891179] syz-executor050 D26960 8121 8105 0x00000004 [ 717.897251] Call Trace: [ 717.899837] __schedule+0x887/0x2040 [ 717.903551] ? io_schedule_timeout+0x140/0x140 [ 717.909081] ? prepare_to_wait_exclusive+0x2d0/0x2d0 [ 717.914191] schedule+0x8d/0x1b0 [ 717.918208] blk_queue_enter+0x66f/0xb70 [ 717.922273] ? blk_exit_rl+0x70/0x70 [ 717.926643] ? __lock_acquire+0x6de/0x3ff0 [ 717.930877] ? wait_woken+0x250/0x250 [ 717.934662] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 717.940801] ? kmem_cache_alloc+0x315/0x370 [ 717.945128] generic_make_request+0x3fe/0xdf0 [ 717.950347] ? blk_put_request+0x110/0x110 [ 717.954577] ? check_preemption_disabled+0x41/0x280 [ 717.960344] ? alloc_buffer_head+0x20/0x130 [ 717.964679] submit_bio+0xb1/0x430 [ 717.968906] ? generic_make_request+0xdf0/0xdf0 [ 717.973588] ? check_preemption_disabled+0x41/0x280 [ 717.979276] ? guard_bio_eod+0x2a0/0x650 [ 717.983358] submit_bh_wbc+0x5a7/0x760 [ 717.987914] block_read_full_page+0x7cf/0xd10 [ 717.992410] ? block_llseek+0xc0/0xc0 [ 717.996837] ? __bread_gfp+0x300/0x300 [ 718.000724] ? add_to_page_cache_locked+0x40/0x40 [ 718.005556] do_read_cache_page+0x533/0x1170 [ 718.011508] ? blkdev_writepages+0x20/0x20 [ 718.016169] read_dev_sector+0xbf/0x500 [ 718.020161] ? adfspart_check_ADFS+0x8e0/0x8e0 [ 718.024744] adfspart_check_ICS+0x114/0xe70 [ 718.029944] ? adfspart_check_ADFS+0x8e0/0x8e0 [ 718.034525] ? snprintf+0xbb/0xf0 [ 718.038612] ? vsprintf+0x30/0x30 [ 718.042065] ? _raw_spin_unlock+0x29/0x40 [ 718.046984] ? __get_vm_area_node+0x2e2/0x3a0 [ 718.051509] ? adfspart_check_ADFS+0x8e0/0x8e0 [ 718.056862] check_partition+0x390/0x690 [ 718.061079] rescan_partitions+0x1b5/0x970 [ 718.065306] ? nbd_open+0x4cc/0x6f0 [ 718.069865] ? nbd_add_socket+0x840/0x840 [ 718.074102] bdev_disk_changed+0x179/0x1b0 [ 718.079055] __blkdev_get+0x1282/0x1480 [ 718.083045] ? bdev_disk_changed+0x1b0/0x1b0 [ 718.088122] ? mark_held_locks+0xf0/0xf0 [ 718.092204] ? mark_held_locks+0xf0/0xf0 [ 718.097103] blkdev_get+0xb0/0x940 [ 718.100630] ? bd_acquire+0x245/0x440 [ 718.104456] ? __blkdev_get+0x1480/0x1480 [ 718.109543] ? lock_downgrade+0x720/0x720 [ 718.113696] ? lock_acquire+0x170/0x3c0 [ 718.118347] ? bd_acquire+0x21/0x440 [ 718.122178] ? do_raw_spin_unlock+0x171/0x230 [ 718.127389] blkdev_open+0x202/0x290 [ 718.131129] do_dentry_open+0x4aa/0x1160 [ 718.135174] ? blkdev_get_by_dev+0x70/0x70 [ 718.140365] ? chown_common+0x550/0x550 [ 718.144347] ? inode_permission+0x3d/0x140 [ 718.149274] path_openat+0x793/0x2df0 [ 718.153077] ? path_lookupat+0x8d0/0x8d0 [ 718.157813] ? do_anonymous_page+0x704/0x1be0 [ 718.162310] do_filp_open+0x18c/0x3f0 [ 718.166793] ? may_open_dev+0xf0/0xf0 [ 718.170595] ? lock_downgrade+0x720/0x720 [ 718.174723] ? __alloc_fd+0x7e/0x570 [ 718.179919] ? expand_files+0x1a/0x890 [ 718.183821] ? do_raw_spin_unlock+0x171/0x230 [ 718.188937] ? _raw_spin_unlock+0x29/0x40 [ 718.193131] ? __alloc_fd+0x28d/0x570 [ 718.197547] do_sys_open+0x3b3/0x520 [ 718.201257] ? filp_open+0x70/0x70 [ 718.204784] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 718.211005] ? trace_hardirqs_off_caller+0x6e/0x210 [ 718.216434] ? do_syscall_64+0x21/0x620 [ 718.220407] do_syscall_64+0xf9/0x620 [ 718.224191] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 718.230251] RIP: 0033:0x406994 [ 718.233592] Code: Bad RIP value. [ 718.237589] RSP: 002b:00007fb1e4df3e60 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 [ 718.245293] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000406994 [ 718.253213] RDX: 0000000000000000 RSI: 00007fb1e4df3ef0 RDI: 00000000ffffff9c [ 718.260956] RBP: 00007fb1e4df3ef0 R08: 0000000000000000 R09: 002364626e2f7665 [ 718.268656] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 718.276369] R13: 000000000049b08c R14: 64626e2f7665642f R15: 0000000000022000 [ 718.283684] INFO: task syz-executor050:8122 blocked for more than 140 seconds. [ 718.291763] Not tainted 4.19.179-syzkaller #0 [ 718.297204] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 718.305168] syz-executor050 D29160 8122 8105 0x00000004 [ 718.311628] Call Trace: [ 718.314210] __schedule+0x887/0x2040 [ 718.318561] ? io_schedule_timeout+0x140/0x140 [ 718.323144] ? lock_downgrade+0x720/0x720 [ 718.327941] ? __mutex_lock+0x458/0x1260 [ 718.331998] schedule+0x8d/0x1b0 [ 718.335345] schedule_preempt_disabled+0xf/0x20 [ 718.340882] __mutex_lock+0x647/0x1260 [ 718.344774] ? unwind_get_return_address+0x51/0x90 [ 718.350381] ? __blkdev_get+0x1d0/0x1480 [ 718.354467] ? __mutex_add_waiter+0x160/0x160 [ 718.359602] ? lock_downgrade+0x720/0x720 [ 718.363744] ? lock_acquire+0x170/0x3c0 [ 718.368324] ? get_gendisk+0x83/0x380 [ 718.372227] ? disk_block_events+0x1d/0x130 [ 718.377846] __blkdev_get+0x1d0/0x1480 [ 718.381733] ? bdev_disk_changed+0x1b0/0x1b0 [ 718.386717] ? mark_held_locks+0xf0/0xf0 [ 718.390774] ? mark_held_locks+0xf0/0xf0 [ 718.394818] blkdev_get+0xb0/0x940 [ 718.399156] ? bd_acquire+0x245/0x440 [ 718.402950] ? __blkdev_get+0x1480/0x1480 [ 718.407794] ? lock_downgrade+0x720/0x720 [ 718.411933] ? lock_acquire+0x170/0x3c0 [ 718.416713] ? bd_acquire+0x21/0x440 [ 718.420427] ? do_raw_spin_unlock+0x171/0x230 [ 718.424905] blkdev_open+0x202/0x290 [ 718.429470] do_dentry_open+0x4aa/0x1160 [ 718.433544] ? blkdev_get_by_dev+0x70/0x70 [ 718.438389] ? chown_common+0x550/0x550 [ 718.442362] ? inode_permission+0x3d/0x140 [ 718.447241] path_openat+0x793/0x2df0 [ 718.451069] ? path_lookupat+0x8d0/0x8d0 [ 718.455116] ? do_anonymous_page+0x704/0x1be0 [ 718.460461] ? mark_held_locks+0xf0/0xf0 [ 718.464522] do_filp_open+0x18c/0x3f0 [ 718.468922] ? may_open_dev+0xf0/0xf0 [ 718.472747] ? lock_downgrade+0x720/0x720 [ 718.477524] ? lock_acquire+0x170/0x3c0 [ 718.481491] ? __alloc_fd+0x34/0x570 [ 718.485208] ? do_raw_spin_unlock+0x171/0x230 [ 718.490516] ? _raw_spin_unlock+0x29/0x40 [ 718.494660] ? __alloc_fd+0x28d/0x570 [ 718.499084] do_sys_open+0x3b3/0x520 [ 718.502808] ? filp_open+0x70/0x70 [ 718.506946] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 718.512305] ? trace_hardirqs_off_caller+0x6e/0x210 [ 718.518028] ? do_syscall_64+0x21/0x620 [ 718.521990] do_syscall_64+0xf9/0x620 [ 718.526459] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 718.531638] RIP: 0033:0x406994 [ 718.534817] Code: Bad RIP value. [ 718.538976] RSP: 002b:00007fb1e4dd2e60 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 [ 718.547113] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000406994 [ 718.554389] RDX: 0000000000000000 RSI: 00007fb1e4dd2ef0 RDI: 00000000ffffff9c [ 718.562935] RBP: 00007fb1e4dd2ef0 R08: 0000000000000000 R09: 002364626e2f7665 [ 718.570604] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 718.578410] R13: 000000000049b08c R14: 64626e2f7665642f R15: 0000000000022000 [ 718.586147] [ 718.586147] Showing all locks held in the system: [ 718.592495] 1 lock held by khungtaskd/1567: [ 718.597835] #0: 0000000067ae6e13 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 [ 718.606865] 1 lock held by in:imklog/7792: [ 718.611090] #0: 0000000050b4f35e (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 [ 718.619693] 1 lock held by systemd-udevd/8114: [ 718.624263] #0: 00000000eb902899 (&bdev->bd_mutex){+.+.}, at: blkdev_put+0x30/0x520 [ 718.632766] 1 lock held by syz-executor050/8120: [ 718.637910] #0: 000000004f4c6e31 (&nbd->config_lock){+.+.}, at: nbd_ioctl+0x151/0xbe0 [ 718.646385] 1 lock held by syz-executor050/8121: [ 718.651126] #0: 00000000eb902899 (&bdev->bd_mutex){+.+.}, at: __blkdev_get+0x1d0/0x1480 [ 718.660061] 1 lock held by syz-executor050/8122: [ 718.664810] #0: 00000000eb902899 (&bdev->bd_mutex){+.+.}, at: __blkdev_get+0x1d0/0x1480 [ 718.673865] [ 718.675491] ============================================= [ 718.675491] [ 718.683293] NMI backtrace for cpu 0 [ 718.687032] CPU: 0 PID: 1567 Comm: khungtaskd Not tainted 4.19.179-syzkaller #0 [ 718.694470] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 718.703942] Call Trace: [ 718.706518] dump_stack+0x1fc/0x2ef [ 718.710129] nmi_cpu_backtrace.cold+0x63/0xa2 [ 718.714610] ? lapic_can_unplug_cpu+0x80/0x80 [ 718.719176] nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 [ 718.724444] watchdog+0x991/0xe60 [ 718.727885] ? reset_hung_task_detector+0x30/0x30 [ 718.732710] kthread+0x33f/0x460 [ 718.736058] ? kthread_park+0x180/0x180 [ 718.740109] ret_from_fork+0x24/0x30 [ 718.744016] Sending NMI from CPU 0 to CPUs 1: [ 718.748963] NMI backtrace for cpu 1 [ 718.748969] CPU: 1 PID: 10 Comm: rcu_preempt Not tainted 4.19.179-syzkaller #0 [ 718.748974] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 718.748979] RIP: 0010:_raw_spin_unlock_irqrestore+0x52/0xe0 [ 718.748988] Code: 48 c7 c0 48 82 f1 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 72 48 83 3d dd ee da 01 00 74 64 48 89 df 57 9d <0f> 1f 44 00 00 e8 b4 f9 50 f9 bf 01 00 00 00 e8 3a dc 2a f9 65 8b [ 718.748992] RSP: 0018:ffff8880b5a77a68 EFLAGS: 00000086 [ 718.748999] RAX: 1ffffffff13e3049 RBX: 0000000000000086 RCX: ffffffff814bc6c0 [ 718.749003] RDX: dffffc0000000000 RSI: 0000000000000004 RDI: 0000000000000086 [ 718.749007] RBP: ffffffff8d3ce7c8 R08: 0000000000000000 R09: fffffbfff1a79cf9 [ 718.749012] R10: ffffffff8d3ce7cb R11: 0000000000000000 R12: dffffc0000000000 [ 718.749016] R13: 1ffff11016b4ef52 R14: ffff8880b5a77cc0 R15: ffffffff8d3ce7c8 [ 718.749021] FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 718.749025] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 718.749029] CR2: 00007f86d11a6000 CR3: 00000000a2132000 CR4: 00000000001406e0 [ 718.749034] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 718.749038] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 718.749041] Call Trace: [ 718.749044] debug_object_deactivate+0x1f9/0x2e0 [ 718.749047] ? debug_stats_show+0xf0/0xf0 [ 718.749050] ? lock_acquire+0x170/0x3c0 [ 718.749053] ? lock_timer_base+0x55/0x1b0 [ 718.749056] ? do_raw_spin_lock+0xcb/0x220 [ 718.749060] detach_if_pending+0x82/0x460 [ 718.749063] try_to_del_timer_sync+0xaa/0x110 [ 718.749072] ? detach_if_pending+0x460/0x460 [ 718.749075] ? del_timer_sync+0x75/0x270 [ 718.749079] ? del_timer_sync+0x1cc/0x270 [ 718.749082] del_timer_sync+0x1a4/0x270 [ 718.749085] schedule_timeout+0x4d7/0xfe0 [ 718.749088] ? prepare_to_swait_event+0x5b/0x540 [ 718.749091] ? usleep_range+0x170/0x170 [ 718.749094] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 718.749098] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 718.749101] ? collect_expired_timers+0x2a0/0x2a0 [ 718.749104] ? swake_up_all+0x340/0x340 [ 718.749107] rcu_gp_kthread+0xdad/0x21c0 [ 718.749110] ? lock_acquire+0x170/0x3c0 [ 718.749113] ? __rcu_read_unlock+0x160/0x160 [ 718.749117] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 718.749120] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 718.749124] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 718.749127] ? __kthread_parkme+0x133/0x1e0 [ 718.749135] ? __rcu_read_unlock+0x160/0x160 [ 718.749138] kthread+0x33f/0x460 [ 718.749141] ? kthread_park+0x180/0x180 [ 718.749144] ret_from_fork+0x24/0x30 [ 718.767927] Kernel panic - not syncing: hung_task: blocked tasks [ 719.005294] CPU: 0 PID: 1567 Comm: khungtaskd Not tainted 4.19.179-syzkaller #0 [ 719.012845] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 719.022178] Call Trace: [ 719.024756] dump_stack+0x1fc/0x2ef [ 719.028370] panic+0x26a/0x50e [ 719.031543] ? __warn_printk+0xf3/0xf3 [ 719.035414] ? lapic_can_unplug_cpu+0x80/0x80 [ 719.039918] ? ___preempt_schedule+0x16/0x18 [ 719.044335] ? watchdog+0x991/0xe60 [ 719.047947] ? nmi_trigger_cpumask_backtrace+0x15e/0x1f0 [ 719.053381] watchdog+0x9a2/0xe60 [ 719.057255] ? reset_hung_task_detector+0x30/0x30 [ 719.062097] kthread+0x33f/0x460 [ 719.065452] ? kthread_park+0x180/0x180 [ 719.069414] ret_from_fork+0x24/0x30 [ 719.073815] Kernel Offset: disabled [ 719.077444] Rebooting in 86400 seconds..