Warning: Permanently added '10.128.1.47' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 484.283815] block nbd0: shutting down sockets [ 717.627104] INFO: task syz-executor122:8080 blocked for more than 140 seconds. [ 717.634575] Not tainted 4.19.211-syzkaller #0 [ 717.640782] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 717.649392] syz-executor122 D28088 8080 8079 0x80000006 [ 717.655015] Call Trace: [ 717.659114] __schedule+0x887/0x2040 [ 717.662827] ? io_schedule_timeout+0x140/0x140 [ 717.667759] ? lock_downgrade+0x720/0x720 [ 717.671915] ? __mutex_lock+0x418/0x1190 [ 717.675975] schedule+0x8d/0x1b0 [ 717.679664] schedule_preempt_disabled+0xf/0x20 [ 717.684339] __mutex_lock+0x5f0/0x1190 [ 717.688633] ? blkdev_put+0x30/0x520 [ 717.692346] ? mutex_trylock+0x1a0/0x1a0 [ 717.696389] ? lock_downgrade+0x720/0x720 [ 717.700871] ? locks_remove_file+0x286/0x450 [ 717.705283] ? locks_check_ctx_file_list+0x1d/0x110 [ 717.710603] ? _raw_spin_unlock+0x29/0x40 [ 717.714749] ? locks_remove_file+0x2cd/0x450 [ 717.719654] ? blkdev_put+0x520/0x520 [ 717.723454] blkdev_put+0x30/0x520 [ 717.727448] ? blkdev_put+0x520/0x520 [ 717.731286] blkdev_close+0x86/0xb0 [ 717.734902] __fput+0x2ce/0x890 [ 717.738534] task_work_run+0x148/0x1c0 [ 717.742440] do_exit+0xbf3/0x2be0 [ 717.745893] ? mm_update_next_owner+0x650/0x650 [ 717.750968] ? get_signal+0x388/0x1f70 [ 717.754860] ? lock_downgrade+0x720/0x720 [ 717.759297] ? lock_acquire+0x170/0x3c0 [ 717.763274] do_group_exit+0x125/0x310 [ 717.767416] get_signal+0x3f2/0x1f70 [ 717.771139] do_signal+0x8f/0x1670 [ 717.774662] ? block_ioctl+0xe9/0x130 [ 717.778756] ? blkdev_fallocate+0x3f0/0x3f0 [ 717.783085] ? do_vfs_ioctl+0x110/0x12e0 [ 717.787384] ? setup_sigcontext+0x820/0x820 [ 717.791703] ? debug_check_no_obj_freed+0x201/0x490 [ 717.796704] ? ioctl_preallocate+0x200/0x200 [ 717.801385] ? putname+0xe1/0x120 [ 717.804837] ? putname+0xe1/0x120 [ 717.808557] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 717.813572] ? kmem_cache_free+0x226/0x260 [ 717.818209] ? putname+0xe1/0x120 [ 717.821660] ? do_sys_open+0x2bf/0x520 [ 717.825539] ? filp_open+0x70/0x70 [ 717.829413] ? exit_to_usermode_loop+0x36/0x2a0 [ 717.834745] exit_to_usermode_loop+0x204/0x2a0 [ 717.839611] do_syscall_64+0x538/0x620 [ 717.843504] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 717.849026] RIP: 0033:0x7ff0365286f9 [ 717.852745] Code: Bad RIP value. [ 717.856095] RSP: 002b:00007ffd1f8c1b08 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 717.864115] RAX: fffffffffffffe00 RBX: 0000000000000000 RCX: 00007ff0365286f9 [ 717.871604] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000006 [ 717.879095] RBP: 0000000000000000 R08: 00007ffd1f8c1ca8 R09: 00007ffd1f8c1ca8 [ 717.886362] R10: 000000000000ffff R11: 0000000000000246 R12: 00007ff0364e7780 [ 717.893899] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 717.901415] INFO: task systemd-udevd:8084 blocked for more than 140 seconds. [ 717.908871] Not tainted 4.19.211-syzkaller #0 [ 717.913880] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 717.922066] systemd-udevd D26624 8084 4696 0x00000104 [ 717.927937] Call Trace: [ 717.930516] __schedule+0x887/0x2040 [ 717.934216] ? io_schedule_timeout+0x140/0x140 [ 717.939053] schedule+0x8d/0x1b0 [ 717.942422] io_schedule+0xb5/0x120 [ 717.946033] wait_on_page_bit+0x2c5/0x3f0 [ 717.950564] ? wake_page_function+0x1b0/0x1b0 [ 717.955062] ? __bread_gfp+0x300/0x300 [ 717.959273] ? add_to_page_cache_lru+0x680/0x680 [ 717.964032] do_read_cache_page+0x8ed/0x1170 [ 717.968692] ? blkdev_writepages+0x20/0x20 [ 717.972930] read_dev_sector+0xbf/0x500 [ 717.977156] ? adfspart_check_ADFS+0x8e0/0x8e0 [ 717.981743] adfspart_check_ICS+0x114/0xe70 [ 717.986068] ? adfspart_check_ADFS+0x8e0/0x8e0 [ 717.990689] ? snprintf+0xbb/0xf0 [ 717.994161] ? vsprintf+0x30/0x30 [ 717.997651] ? _raw_spin_unlock+0x29/0x40 [ 718.001795] ? __get_vm_area_node+0x2e2/0x3a0 [ 718.006293] ? adfspart_check_ADFS+0x8e0/0x8e0 [ 718.010920] check_partition+0x390/0x690 [ 718.014985] rescan_partitions+0x1b5/0x970 [ 718.019274] ? nbd_open+0x4cc/0x6f0 [ 718.022896] ? nbd_add_socket+0x840/0x840 [ 718.027610] bdev_disk_changed+0x179/0x1b0 [ 718.031846] __blkdev_get+0x1282/0x1480 [ 718.035807] ? bdev_disk_changed+0x1b0/0x1b0 [ 718.040258] ? mark_held_locks+0xf0/0xf0 [ 718.044321] ? mark_held_locks+0xf0/0xf0 [ 718.048427] blkdev_get+0xb0/0x940 [ 718.051980] ? bd_acquire+0x245/0x440 [ 718.055779] ? __blkdev_get+0x1480/0x1480 [ 718.059967] ? lock_downgrade+0x720/0x720 [ 718.064112] ? lock_acquire+0x170/0x3c0 [ 718.068140] ? bd_acquire+0x21/0x440 [ 718.071852] ? do_raw_spin_unlock+0x171/0x230 [ 718.076332] blkdev_open+0x202/0x290 [ 718.080087] do_dentry_open+0x4aa/0x1160 [ 718.084152] ? blkdev_get_by_dev+0x70/0x70 [ 718.088487] ? chown_common+0x550/0x550 [ 718.092490] ? inode_permission+0x3d/0x140 [ 718.096713] path_openat+0x793/0x2df0 [ 718.100603] ? path_lookupat+0x8d0/0x8d0 [ 718.104668] ? __put_seccomp_filter+0xa0/0xa0 [ 718.109211] ? mark_held_locks+0xf0/0xf0 [ 718.113277] ? mark_held_locks+0xf0/0xf0 [ 718.117389] do_filp_open+0x18c/0x3f0 [ 718.121209] ? may_open_dev+0xf0/0xf0 [ 718.124996] ? lock_downgrade+0x720/0x720 [ 718.129188] ? lock_acquire+0x170/0x3c0 [ 718.133209] ? __alloc_fd+0x34/0x570 [ 718.136972] ? do_raw_spin_unlock+0x171/0x230 [ 718.141483] ? _raw_spin_unlock+0x29/0x40 [ 718.145615] ? __alloc_fd+0x28d/0x570 [ 718.149480] do_sys_open+0x3b3/0x520 [ 718.153188] ? filp_open+0x70/0x70 [ 718.156712] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 718.162118] ? trace_hardirqs_off_caller+0x6e/0x210 [ 718.167189] ? do_syscall_64+0x21/0x620 [ 718.171164] do_syscall_64+0xf9/0x620 [ 718.174949] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 718.180171] RIP: 0033:0x7f63c5aaf840 [ 718.183883] Code: Bad RIP value. [ 718.187280] RSP: 002b:00007ffde2119388 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 718.194987] RAX: ffffffffffffffda RBX: 0000563301a6f6e0 RCX: 00007f63c5aaf840 [ 718.202293] RDX: 0000563300295fe3 RSI: 00000000000a0800 RDI: 0000563301a741b0 [ 718.209611] RBP: 00007ffde2119500 R08: 0000563300295670 R09: 0000000000000010 [ 718.216929] R10: 0000563300295d0c R11: 0000000000000246 R12: 00007ffde2119450 [ 718.224192] R13: 0000563301a72880 R14: 0000000000000003 R15: 000000000000000e [ 718.231524] [ 718.231524] Showing all locks held in the system: [ 718.238029] 1 lock held by khungtaskd/1570: [ 718.242327] #0: 0000000079e46030 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 [ 718.250995] 1 lock held by syz-executor122/8080: [ 718.255738] #0: 000000007a124771 (&bdev->bd_mutex){+.+.}, at: blkdev_put+0x30/0x520 [ 718.263720] 1 lock held by systemd-udevd/8084: [ 718.268340] #0: 000000007a124771 (&bdev->bd_mutex){+.+.}, at: __blkdev_get+0x1d0/0x1480 [ 718.276581] [ 718.278261] ============================================= [ 718.278261] [ 718.285272] NMI backtrace for cpu 0 [ 718.288942] CPU: 0 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 [ 718.296390] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 [ 718.305722] Call Trace: [ 718.308294] dump_stack+0x1fc/0x2ef [ 718.311928] nmi_cpu_backtrace.cold+0x63/0xa2 [ 718.316403] ? lapic_can_unplug_cpu+0x80/0x80 [ 718.320877] nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 [ 718.326136] watchdog+0x991/0xe60 [ 718.329571] ? reset_hung_task_detector+0x30/0x30 [ 718.334394] kthread+0x33f/0x460 [ 718.337739] ? kthread_park+0x180/0x180 [ 718.341695] ret_from_fork+0x24/0x30 [ 718.345479] Sending NMI from CPU 0 to CPUs 1: [ 718.350679] NMI backtrace for cpu 1 [ 718.350685] CPU: 1 PID: 4695 Comm: systemd-journal Not tainted 4.19.211-syzkaller #0 [ 718.350691] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 [ 718.350695] RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x8/0x20 [ 718.350706] Code: 00 00 48 8b 0c 24 0f b7 d6 0f b7 f7 bf 03 00 00 00 e9 ec fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 48 8b 0c 24 89 f2 89 fe 05 00 00 00 e9 ce fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f [ 718.350709] RSP: 0018:ffff8880a08f7550 EFLAGS: 00000057 [ 718.350717] RAX: ffff8880a08ea640 RBX: 0000000000000000 RCX: ffffffff87edb130 [ 718.350722] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000008 [ 718.350727] RBP: ffff8880b59e3720 R08: 0000000000000001 R09: ffff8880a08f7640 [ 718.350732] R10: ffff8880a08f768f R11: 0000000000000001 R12: ffff8880ba11e730 [ 718.350737] R13: 00000000ffffffff R14: dffffc0000000000 R15: ffff8880b59e3720 [ 718.350742] FS: 00007fdf560148c0(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 718.350746] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 718.350751] CR2: 00007fdf533ef000 CR3: 00000000a1007000 CR4: 00000000003406e0 [ 718.350756] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 718.350761] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 718.350764] Call Trace: [ 718.350767] cpumask_next_and+0x20/0x50 [ 718.350771] find_busiest_group+0x383/0x25f0 [ 718.350774] ? is_bpf_text_address+0x60/0x1b0 [ 718.350778] ? lock_downgrade+0x720/0x720 [ 718.350781] ? update_group_capacity+0xb50/0xb50 [ 718.350785] ? __lock_acquire+0x6de/0x3ff0 [ 718.350789] ? __lock_acquire+0x6de/0x3ff0 [ 718.350792] load_balance+0x36d/0x2080 [ 718.350795] ? mark_held_locks+0xf0/0xf0 [ 718.350799] ? find_busiest_group+0x25f0/0x25f0 [ 718.350803] ? kvm_sched_clock_read+0x14/0x40 [ 718.350806] ? sched_clock+0x2a/0x40 [ 718.350809] ? sched_clock_cpu+0x18/0x1b0 [ 718.350813] pick_next_task_fair+0x487/0x1570 [ 718.350817] ? run_rebalance_domains+0x2d0/0x2d0 [ 718.350820] __schedule+0x457/0x2040 [ 718.350823] ? io_schedule_timeout+0x140/0x140 [ 718.350827] ? __mutex_unlock_slowpath+0xea/0x610 [ 718.350831] ? wait_for_completion_io+0x10/0x10 [ 718.350834] schedule+0x8d/0x1b0 [ 718.350838] schedule_hrtimeout_range_clock+0x33e/0x390 [ 718.350842] ? hrtimer_nanosleep_restart+0x150/0x150 [ 718.350845] ? ep_poll+0xaaa/0xcb0 [ 718.350849] ? lock_downgrade+0x720/0x720 [ 718.350852] ? lock_acquire+0x170/0x3c0 [ 718.350855] ? ep_poll+0x224/0xcb0 [ 718.350859] ? _raw_spin_unlock_irq+0x24/0x80 [ 718.350862] ep_poll+0xabb/0xcb0 [ 718.350866] ? ep_send_events_proc+0xb50/0xb50 [ 718.350870] ? debug_object_init_on_stack+0x20/0x20 [ 718.350873] ? kfree+0x110/0x210 [ 718.350876] ? task_work_run+0x11c/0x1c0 [ 718.350880] ? __secure_computing+0x104/0x360 [ 718.350883] ? wake_up_q+0xe0/0xe0 [ 718.350887] ? syscall_slow_exit_work+0x630/0x630 [ 718.350890] do_epoll_wait+0x1aa/0x200 [ 718.350894] ? trace_hardirqs_off_caller+0x6e/0x210 [ 718.350898] __x64_sys_epoll_wait+0x93/0xf0 [ 718.350901] do_syscall_64+0xf9/0x620 [ 718.350905] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 718.350908] RIP: 0033:0x7fdf552dd2e3 [ 718.350919] Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 83 3d 29 54 2b 00 00 75 13 49 89 ca b8 e8 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 34 c3 48 83 ec 08 e8 0b c2 00 00 48 89 04 24 [ 718.350923] RSP: 002b:00007fffea2818c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 [ 718.350931] RAX: ffffffffffffffda RBX: 000055c2db54d1e0 RCX: 00007fdf552dd2e3 [ 718.350936] RDX: 0000000000000013 RSI: 00007fffea2818d0 RDI: 0000000000000008 [ 718.350941] RBP: 00007fffea281ac0 R08: 00007fffea293000 R09: 000000b8e12bdc33 [ 718.350946] R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fffea2818d0 [ 718.350951] R13: 0000000000000001 R14: ffffffffffffffff R15: 0005e2e5607c64de [ 718.351028] Kernel panic - not syncing: hung_task: blocked tasks [ 718.719573] CPU: 0 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 [ 718.726995] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 [ 718.736324] Call Trace: [ 718.738898] dump_stack+0x1fc/0x2ef [ 718.742619] panic+0x26a/0x50e [ 718.745802] ? __warn_printk+0xf3/0xf3 [ 718.749671] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 718.754754] ? cpumask_next+0x3c/0x40 [ 718.758533] ? printk_safe_flush+0xd6/0x120 [ 718.762832] ? watchdog+0x991/0xe60 [ 718.766438] ? nmi_trigger_cpumask_backtrace+0x15e/0x1f0 [ 718.771868] watchdog+0x9a2/0xe60 [ 718.775303] ? reset_hung_task_detector+0x30/0x30 [ 718.780138] kthread+0x33f/0x460 [ 718.783483] ? kthread_park+0x180/0x180 [ 718.787438] ret_from_fork+0x24/0x30 [ 718.791418] Kernel Offset: disabled [ 718.795035] Rebooting in 86400 seconds..