[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.62' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 1001.316173] INFO: task systemd-udevd:4631 blocked for more than 140 seconds. [ 1001.323425] Not tainted 4.14.288-syzkaller #0 [ 1001.329147] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1001.337168] systemd-udevd D25760 4631 1 0x00000304 [ 1001.342794] Call Trace: [ 1001.345378] __schedule+0x88b/0x1de0 [ 1001.349130] ? io_schedule_timeout+0x140/0x140 [ 1001.353704] ? lock_downgrade+0x740/0x740 [ 1001.357881] schedule+0x8d/0x1b0 [ 1001.361244] schedule_preempt_disabled+0xf/0x20 [ 1001.365899] __mutex_lock+0x669/0x1310 [ 1001.369813] ? __blkdev_get+0x191/0x1090 [ 1001.373869] ? __mutex_lock+0x2d0/0x1310 [ 1001.377961] ? lo_open+0x19/0xb0 [ 1001.381348] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1001.386938] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1001.392384] ? exact_match+0x9/0x20 [ 1001.396059] ? kobj_lookup+0x31e/0x400 [ 1001.399938] lo_open+0x19/0xb0 [ 1001.403108] ? loop_unregister_transfer+0x90/0x90 [ 1001.407979] __blkdev_get+0xa8c/0x1090 [ 1001.411879] ? lookup_fast+0x430/0xe30 [ 1001.415745] ? sb_min_blocksize+0x1d0/0x1d0 [ 1001.420101] ? fsnotify+0x974/0x11b0 [ 1001.423827] blkdev_get+0x88/0x890 [ 1001.427415] ? __blkdev_get+0x1090/0x1090 [ 1001.431565] ? lock_downgrade+0x740/0x740 [ 1001.435693] ? do_raw_spin_unlock+0x164/0x220 [ 1001.440221] ? _raw_spin_unlock+0x29/0x40 [ 1001.444368] blkdev_open+0x1cc/0x250 [ 1001.448122] ? security_file_open+0x82/0x190 [ 1001.452537] do_dentry_open+0x44b/0xec0 [ 1001.457095] ? blkdev_get_by_dev+0x70/0x70 [ 1001.461342] vfs_open+0x105/0x220 [ 1001.464784] path_openat+0x628/0x2970 [ 1001.468636] ? path_lookupat+0x780/0x780 [ 1001.472700] ? trace_hardirqs_on+0x10/0x10 [ 1001.476983] ? copyout+0xc0/0xc0 [ 1001.480370] do_filp_open+0x179/0x3c0 [ 1001.484153] ? may_open_dev+0xe0/0xe0 [ 1001.487990] ? lock_downgrade+0x740/0x740 [ 1001.492138] ? do_raw_spin_unlock+0x164/0x220 [ 1001.496664] ? _raw_spin_unlock+0x29/0x40 [ 1001.500805] ? __alloc_fd+0x1be/0x490 [ 1001.504588] do_sys_open+0x296/0x410 [ 1001.508333] ? filp_open+0x60/0x60 [ 1001.511866] ? do_syscall_64+0x4c/0x640 [ 1001.515818] ? do_sys_open+0x410/0x410 [ 1001.519733] do_syscall_64+0x1d5/0x640 [ 1001.523618] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 1001.528839] RIP: 0033:0x7fde4050a840 [ 1001.532537] RSP: 002b:00007fff813a82c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 1001.540273] RAX: ffffffffffffffda RBX: 00007fff813a8370 RCX: 00007fde4050a840 [ 1001.547589] RDX: 000055c54ce6ffe3 RSI: 00000000000a0800 RDI: 000055c54ed94590 [ 1001.554857] RBP: 00007fff813a8800 R08: 000055c54ce6f670 R09: 0000000000000010 [ 1001.562192] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff813a8470 [ 1001.569522] R13: 000055c54ed7f010 R14: 000055c54ed84bf0 R15: 00007fff813a8340 [ 1001.576897] INFO: task systemd-udevd:7980 blocked for more than 140 seconds. [ 1001.584073] Not tainted 4.14.288-syzkaller #0 [ 1001.589620] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1001.597780] systemd-udevd D28712 7980 4631 0x00000300 [ 1001.603413] Call Trace: [ 1001.606052] __schedule+0x88b/0x1de0 [ 1001.609767] ? io_schedule_timeout+0x140/0x140 [ 1001.614346] ? lock_downgrade+0x740/0x740 [ 1001.618564] schedule+0x8d/0x1b0 [ 1001.621941] schedule_preempt_disabled+0xf/0x20 [ 1001.626658] __mutex_lock+0x669/0x1310 [ 1001.630544] ? lo_release+0x1b/0x190 [ 1001.634247] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1001.639727] ? __blkdev_put+0x330/0x800 [ 1001.643717] ? lock_downgrade+0x740/0x740 [ 1001.647901] ? loop_clr_fd+0xc20/0xc20 [ 1001.651791] lo_release+0x1b/0x190 [ 1001.655311] ? loop_clr_fd+0xc20/0xc20 [ 1001.659242] __blkdev_put+0x5aa/0x800 [ 1001.663040] ? revalidate_disk+0x1f0/0x1f0 [ 1001.667307] ? locks_remove_file+0x2cd/0x420 [ 1001.671731] ? blkdev_put+0x75/0x4c0 [ 1001.675422] ? blkdev_put+0x4c0/0x4c0 [ 1001.679244] blkdev_close+0x86/0xb0 [ 1001.682881] __fput+0x25f/0x7a0 [ 1001.686192] task_work_run+0x11f/0x190 [ 1001.690073] exit_to_usermode_loop+0x1ad/0x200 [ 1001.694633] do_syscall_64+0x4a3/0x640 [ 1001.698553] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 1001.703732] RIP: 0033:0x7fde4050a270 [ 1001.707471] RSP: 002b:00007fff813a81d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ 1001.715170] RAX: 0000000000000000 RBX: 0000000000000007 RCX: 00007fde4050a270 [ 1001.722981] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000007 [ 1001.730302] RBP: 00007fde413c4710 R08: 000055c54ed92f70 R09: 000055c54ed92d00 [ 1001.737607] R10: 00007fde413c48c0 R11: 0000000000000246 R12: 0000000000000000 [ 1001.744869] R13: 000055c54ed91880 R14: 0000000000000003 R15: 000000000000000e [ 1001.752192] INFO: task syz-executor163:7981 blocked for more than 140 seconds. [ 1001.759615] Not tainted 4.14.288-syzkaller #0 [ 1001.764616] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1001.772608] syz-executor163 D28912 7981 7967 0x00000004 [ 1001.778289] Call Trace: [ 1001.780870] __schedule+0x88b/0x1de0 [ 1001.784583] ? io_schedule_timeout+0x140/0x140 [ 1001.789192] ? lock_downgrade+0x740/0x740 [ 1001.793338] schedule+0x8d/0x1b0 [ 1001.796744] schedule_preempt_disabled+0xf/0x20 [ 1001.801408] __mutex_lock+0x669/0x1310 [ 1001.805318] ? loop_control_ioctl+0x181/0x3f0 [ 1001.809840] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1001.815287] ? loop_queue_work+0x21e0/0x21e0 [ 1001.819728] loop_control_ioctl+0x181/0x3f0 [ 1001.824045] ? loop_lookup+0x190/0x190 [ 1001.827974] ? vm_insert_page+0x7c0/0x7c0 [ 1001.832205] ? loop_lookup+0x190/0x190 [ 1001.836127] do_vfs_ioctl+0x75a/0xff0 [ 1001.839923] ? ioctl_preallocate+0x1a0/0x1a0 [ 1001.844310] ? lock_downgrade+0x740/0x740 [ 1001.848999] ? security_file_ioctl+0x83/0xb0 [ 1001.853497] SyS_ioctl+0x7f/0xb0 [ 1001.856889] ? do_vfs_ioctl+0xff0/0xff0 [ 1001.860853] do_syscall_64+0x1d5/0x640 [ 1001.864741] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 1001.869955] RIP: 0033:0x7fb43c457149 [ 1001.873654] RSP: 002b:00007ffcca4b82d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 1001.881392] RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007fb43c457149 [ 1001.888697] RDX: 0000000000000002 RSI: 0000000000004c81 RDI: 0000000000000003 [ 1001.896002] RBP: 0000000000000000 R08: 000000000000000d R09: 000000000000000d [ 1001.903266] R10: 000000000000000d R11: 0000000000000246 R12: 00007fb43c41a890 [ 1001.910568] R13: 00007ffcca4b8300 R14: 00007ffcca4b82ec R15: 00007ffcca4b82f0 [ 1001.917922] INFO: task syz-executor163:8001 blocked for more than 140 seconds. [ 1001.925272] Not tainted 4.14.288-syzkaller #0 [ 1001.930311] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1001.938319] syz-executor163 D28888 8001 7968 0x00000004 [ 1001.943940] Call Trace: [ 1001.946548] __schedule+0x88b/0x1de0 [ 1001.950348] ? io_schedule_timeout+0x140/0x140 [ 1001.954916] ? lock_downgrade+0x740/0x740 [ 1001.959168] schedule+0x8d/0x1b0 [ 1001.962530] schedule_preempt_disabled+0xf/0x20 [ 1001.967240] __mutex_lock+0x669/0x1310 [ 1001.971117] ? lo_release+0x1b/0x190 [ 1001.974812] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1001.980795] ? __blkdev_put+0x330/0x800 [ 1001.984771] ? lock_downgrade+0x740/0x740 [ 1001.988946] ? loop_clr_fd+0xc20/0xc20 [ 1001.992826] lo_release+0x1b/0x190 [ 1001.996395] ? loop_clr_fd+0xc20/0xc20 [ 1002.000273] __blkdev_put+0x5aa/0x800 [ 1002.004161] ? revalidate_disk+0x1f0/0x1f0 [ 1002.008422] ? locks_remove_file+0x2cd/0x420 [ 1002.012821] ? blkdev_put+0x75/0x4c0 [ 1002.016559] ? blkdev_put+0x4c0/0x4c0 [ 1002.020351] blkdev_close+0x86/0xb0 [ 1002.023968] __fput+0x25f/0x7a0 [ 1002.027278] task_work_run+0x11f/0x190 [ 1002.031159] exit_to_usermode_loop+0x1ad/0x200 [ 1002.035718] do_syscall_64+0x4a3/0x640 [ 1002.039686] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 1002.044861] RIP: 0033:0x7fb43c4195e3 [ 1002.048597] RSP: 002b:00007ffcca4b8078 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ 1002.056352] RAX: 0000000000000000 RBX: 00007ffcca4b80a0 RCX: 00007fb43c4195e3 [ 1002.063616] RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000004 [ 1002.070907] RBP: 0000000000000004 R08: 0000000000000001 R09: 00007ffcca4b7f10 [ 1002.078231] R10: 00007ffcca4b7dc7 R11: 0000000000000246 R12: 0000000000000003 [ 1002.085488] R13: 00005555573ab2c0 R14: 00007ffcca4b8120 R15: 0000000000000008 [ 1002.092809] INFO: task syz-executor163:8002 blocked for more than 140 seconds. [ 1002.100213] Not tainted 4.14.288-syzkaller #0 [ 1002.105298] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1002.113787] syz-executor163 D28704 8002 7966 0x00000004 [ 1002.119517] Call Trace: [ 1002.122096] __schedule+0x88b/0x1de0 [ 1002.125791] ? io_schedule_timeout+0x140/0x140 [ 1002.130406] ? lock_downgrade+0x740/0x740 [ 1002.134554] schedule+0x8d/0x1b0 [ 1002.137952] schedule_preempt_disabled+0xf/0x20 [ 1002.142614] __mutex_lock+0x669/0x1310 [ 1002.146541] ? blkdev_reread_part+0x1b/0x40 [ 1002.150872] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1002.156360] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 1002.161455] ? __wake_up_common+0x5d0/0x5d0 [ 1002.165769] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 1002.171014] blkdev_reread_part+0x1b/0x40 [ 1002.175172] loop_set_status+0xeeb/0x12b0 [ 1002.179369] loop_set_status64+0x92/0xe0 [ 1002.183439] ? loop_set_status_old+0x200/0x200 [ 1002.188049] ? __mutex_lock+0x360/0x1310 [ 1002.192110] ? wait_for_completion_io+0x10/0x10 [ 1002.196807] ? set_blocksize+0x125/0x380 [ 1002.200856] lo_ioctl+0x587/0x1cd0 [ 1002.204379] ? loop_set_status64+0xe0/0xe0 [ 1002.208637] blkdev_ioctl+0x540/0x1830 [ 1002.212516] ? blkpg_ioctl+0x8d0/0x8d0 [ 1002.216437] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 1002.221528] ? debug_check_no_obj_freed+0x2c0/0x680 [ 1002.226577] block_ioctl+0xd9/0x120 [ 1002.230196] ? blkdev_fallocate+0x3a0/0x3a0 [ 1002.234494] do_vfs_ioctl+0x75a/0xff0 [ 1002.238862] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 1002.244312] ? ioctl_preallocate+0x1a0/0x1a0 [ 1002.248762] ? kmem_cache_free+0x23a/0x2b0 [ 1002.252990] ? putname+0xcd/0x110 [ 1002.256468] ? do_sys_open+0x208/0x410 [ 1002.260357] ? filp_open+0x60/0x60 [ 1002.263896] ? security_file_ioctl+0x83/0xb0 [ 1002.268328] SyS_ioctl+0x7f/0xb0 [ 1002.271689] ? do_vfs_ioctl+0xff0/0xff0 [ 1002.275640] do_syscall_64+0x1d5/0x640 [ 1002.279558] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 1002.284738] RIP: 0033:0x7fb43c456ff7 [ 1002.288480] RSP: 002b:00007ffcca4b8078 EFLAGS: 00000202 ORIG_RAX: 0000000000000010 [ 1002.296253] RAX: ffffffffffffffda RBX: 00007ffcca4b80a0 RCX: 00007fb43c456ff7 [ 1002.303513] RDX: 00007ffcca4b81b0 RSI: 0000000000004c04 RDI: 0000000000000004 [ 1002.310824] RBP: 0000000000000004 R08: 00007ffcca4b7f10 R09: 00000000fbad8001 [ 1002.318135] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003 [ 1002.325396] R13: 00005555573ab2c0 R14: 00007ffcca4b81b0 R15: 00007ffcca4b82f0 [ 1002.332721] INFO: task syz-executor163:8005 blocked for more than 140 seconds. [ 1002.340121] Not tainted 4.14.288-syzkaller #0 [ 1002.345123] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1002.353112] syz-executor163 D28912 8005 7958 0x00000004 [ 1002.358792] Call Trace: [ 1002.361372] __schedule+0x88b/0x1de0 [ 1002.365089] ? io_schedule_timeout+0x140/0x140 [ 1002.370184] ? lock_downgrade+0x740/0x740 [ 1002.374340] schedule+0x8d/0x1b0 [ 1002.377744] schedule_preempt_disabled+0xf/0x20 [ 1002.382418] __mutex_lock+0x669/0x1310 [ 1002.386345] ? loop_control_ioctl+0x67/0x3f0 [ 1002.390746] ? tlb_flush_mmu_free+0x1a0/0x1a0 [ 1002.395222] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1002.400720] ? do_wp_page+0x24d/0x1db0 [ 1002.404612] ? finish_mkwrite_fault+0x5e0/0x5e0 [ 1002.409314] loop_control_ioctl+0x67/0x3f0 [ 1002.413549] ? loop_lookup+0x190/0x190 [ 1002.417467] ? vm_insert_page+0x7c0/0x7c0 [ 1002.421610] ? loop_lookup+0x190/0x190 [ 1002.425481] do_vfs_ioctl+0x75a/0xff0 [ 1002.429310] ? ioctl_preallocate+0x1a0/0x1a0 [ 1002.433719] ? lock_downgrade+0x740/0x740 [ 1002.437899] ? security_file_ioctl+0x83/0xb0 [ 1002.442330] SyS_ioctl+0x7f/0xb0 [ 1002.445692] ? do_vfs_ioctl+0xff0/0xff0 [ 1002.449862] do_syscall_64+0x1d5/0x640 [ 1002.453754] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 1002.458981] RIP: 0033:0x7fb43c457149 [ 1002.462682] RSP: 002b:00007ffcca4b82d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 1002.470425] RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007fb43c457149 [ 1002.477736] RDX: 0000000000000000 RSI: 0000000000004c82 RDI: 0000000000000003 [ 1002.484998] RBP: 0000000000000000 R08: 000000000000000d R09: 000000000000000d [ 1002.492305] R10: 00000000fbad8001 R11: 0000000000000246 R12: 00000000000b9a8b [ 1002.499941] R13: 00007ffcca4b8300 R14: 00007ffcca4b82ec R15: 00007ffcca4b82f0 [ 1002.507255] INFO: task syz-executor163:8008 blocked for more than 140 seconds. [ 1002.514600] Not tainted 4.14.288-syzkaller #0 [ 1002.519648] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1002.527650] syz-executor163 D28912 8008 7959 0x00000004 [ 1002.533269] Call Trace: [ 1002.535888] __schedule+0x88b/0x1de0 [ 1002.539600] ? io_schedule_timeout+0x140/0x140 [ 1002.544162] ? lock_downgrade+0x740/0x740 [ 1002.548346] schedule+0x8d/0x1b0 [ 1002.551708] schedule_preempt_disabled+0xf/0x20 [ 1002.556431] __mutex_lock+0x669/0x1310 [ 1002.560316] ? loop_control_ioctl+0x67/0x3f0 [ 1002.564704] ? tlb_flush_mmu_free+0x1a0/0x1a0 [ 1002.569225] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1002.574689] ? do_wp_page+0x24d/0x1db0 [ 1002.578605] ? finish_mkwrite_fault+0x5e0/0x5e0 [ 1002.583265] loop_control_ioctl+0x67/0x3f0 [ 1002.587525] ? loop_lookup+0x190/0x190 [ 1002.591404] ? vm_insert_page+0x7c0/0x7c0 [ 1002.595533] ? loop_lookup+0x190/0x190 [ 1002.599458] do_vfs_ioctl+0x75a/0xff0 [ 1002.603255] ? ioctl_preallocate+0x1a0/0x1a0 [ 1002.607693] ? lock_downgrade+0x740/0x740 [ 1002.611835] ? security_file_ioctl+0x83/0xb0 [ 1002.616274] SyS_ioctl+0x7f/0xb0 [ 1002.619634] ? do_vfs_ioctl+0xff0/0xff0 [ 1002.623588] do_syscall_64+0x1d5/0x640 [ 1002.627992] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 1002.633186] RIP: 0033:0x7fb43c457149 [ 1002.636920] RSP: 002b:00007ffcca4b82d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 1002.644619] RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007fb43c457149 [ 1002.651933] RDX: 0000000000000000 RSI: 0000000000004c82 RDI: 0000000000000003 [ 1002.659243] RBP: 0000000000000000 R08: 000000000000000d R09: 000000000000000d [ 1002.666559] R10: 00000000fbad8001 R11: 0000000000000246 R12: 00000000000b9a8f [ 1002.673834] R13: 00007ffcca4b8300 R14: 00007ffcca4b82ec R15: 00007ffcca4b82f0 [ 1002.681166] INFO: task syz-executor163:8011 blocked for more than 140 seconds. [ 1002.688565] Not tainted 4.14.288-syzkaller #0 [ 1002.693566] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1002.701563] syz-executor163 D28704 8011 7969 0x00000004 [ 1002.707244] Call Trace: [ 1002.709850] __schedule+0x88b/0x1de0 [ 1002.713543] ? __lock_acquire+0x5fc/0x3f20 [ 1002.717809] ? io_schedule_timeout+0x140/0x140 [ 1002.722420] ? lock_downgrade+0x740/0x740 [ 1002.726608] schedule+0x8d/0x1b0 [ 1002.729968] schedule_preempt_disabled+0xf/0x20 [ 1002.734620] __mutex_lock+0x669/0x1310 [ 1002.738535] ? __blkdev_get+0x191/0x1090 [ 1002.742613] ? __mutex_lock+0x2d0/0x1310 [ 1002.746727] ? lo_open+0x19/0xb0 [ 1002.750095] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1002.755539] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1002.761529] ? disk_get_part+0x95/0x140 [ 1002.765518] ? loop_unregister_transfer+0x90/0x90 [ 1002.770398] lo_open+0x19/0xb0 [ 1002.773586] __blkdev_get+0x306/0x1090 [ 1002.777510] ? lookup_fast+0x430/0xe30 [ 1002.781394] ? sb_min_blocksize+0x1d0/0x1d0 [ 1002.785694] ? fsnotify+0x974/0x11b0 [ 1002.789440] blkdev_get+0x88/0x890 [ 1002.792970] ? __blkdev_get+0x1090/0x1090 [ 1002.797146] ? lock_downgrade+0x740/0x740 [ 1002.801291] ? do_raw_spin_unlock+0x164/0x220 [ 1002.805765] ? _raw_spin_unlock+0x29/0x40 [ 1002.809949] blkdev_open+0x1cc/0x250 [ 1002.813654] ? security_file_open+0x82/0x190 [ 1002.818090] do_dentry_open+0x44b/0xec0 [ 1002.822060] ? blkdev_get_by_dev+0x70/0x70 [ 1002.826329] vfs_open+0x105/0x220 [ 1002.829774] path_openat+0x628/0x2970 [ 1002.833556] ? path_lookupat+0x780/0x780 [ 1002.837687] ? trace_hardirqs_on+0x10/0x10 [ 1002.841920] ? fsnotify+0x974/0x11b0 [ 1002.845618] ? shmem_setattr+0x241/0xbf0 [ 1002.849716] do_filp_open+0x179/0x3c0 [ 1002.853530] ? may_open_dev+0xe0/0xe0 [ 1002.857380] ? lock_downgrade+0x740/0x740 [ 1002.861521] ? do_raw_spin_unlock+0x164/0x220 [ 1002.866040] ? _raw_spin_unlock+0x29/0x40 [ 1002.870176] ? __alloc_fd+0x1be/0x490 [ 1002.874073] do_sys_open+0x296/0x410 [ 1002.877851] ? filp_open+0x60/0x60 [ 1002.881396] ? do_syscall_64+0x4c/0x640 [ 1002.885351] ? SyS_open+0x30/0x30 [ 1002.889355] do_syscall_64+0x1d5/0x640 [ 1002.893248] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 1002.898479] RIP: 0033:0x7fb43c4196b7 [ 1002.902181] RSP: 002b:00007ffcca4b8000 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 1002.909923] RAX: ffffffffffffffda RBX: 00007ffcca4b80a0 RCX: 00007fb43c4196b7 [ 1002.917232] RDX: 0000000000000002 RSI: 00007ffcca4b80a0 RDI: 00000000ffffff9c [ 1002.924491] RBP: 00007ffcca4b80a0 R08: 00007ffcca4b7f10 R09: 00000000fbad8001 [ 1002.931789] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 1002.939093] R13: 00005555573ab2c0 R14: 00007ffcca4b82ec R15: 00007ffcca4b82f0 [ 1002.946428] [ 1002.946428] Showing all locks held in the system: [ 1002.952745] 1 lock held by khungtaskd/1533: [ 1002.957150] #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a [ 1002.966261] 2 locks held by systemd-udevd/4631: [ 1002.970922] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x191/0x1090 [ 1002.979625] #1: (loop_index_mutex){+.+.}, at: [] lo_open+0x19/0xb0 [ 1002.987773] 1 lock held by in:imklog/7687: [ 1002.991992] #0: (&f->f_pos_lock){+.+.}, at: [] __fdget_pos+0x1fb/0x2b0 [ 1003.000466] 2 locks held by systemd-udevd/7980: [ 1003.005119] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_put+0xd8/0x800 [ 1003.013691] #1: (loop_index_mutex){+.+.}, at: [] lo_release+0x1b/0x190 [ 1003.022168] 2 locks held by syz-executor163/7981: [ 1003.027042] #0: (loop_index_mutex){+.+.}, at: [] loop_control_ioctl+0x67/0x3f0 [ 1003.036218] #1: (&lo->lo_ctl_mutex){+.+.}, at: [] loop_control_ioctl+0x181/0x3f0 [ 1003.045502] 2 locks held by syz-executor163/8001: [ 1003.050369] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_put+0xd8/0x800 [ 1003.058920] #1: (loop_index_mutex){+.+.}, at: [] lo_release+0x1b/0x190 [ 1003.067575] 2 locks held by syz-executor163/8002: [ 1003.072403] #0: (&lo->lo_ctl_mutex/1){+.+.}, at: [] lo_ioctl+0x87/0x1cd0 [ 1003.081042] #1: (&bdev->bd_mutex){+.+.}, at: [] blkdev_reread_part+0x1b/0x40 [ 1003.090063] 1 lock held by syz-executor163/8005: [ 1003.094815] #0: (loop_index_mutex){+.+.}, at: [] loop_control_ioctl+0x67/0x3f0 [ 1003.103962] 1 lock held by syz-executor163/8008: [ 1003.108786] #0: (loop_index_mutex){+.+.}, at: [] loop_control_ioctl+0x67/0x3f0 [ 1003.117953] 2 locks held by syz-executor163/8011: [ 1003.122782] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x191/0x1090 [ 1003.131502] #1: (loop_index_mutex){+.+.}, at: [] lo_open+0x19/0xb0 [ 1003.139622] [ 1003.141233] ============================================= [ 1003.141233] [ 1003.149168] NMI backtrace for cpu 0 [ 1003.152800] CPU: 0 PID: 1533 Comm: khungtaskd Not tainted 4.14.288-syzkaller #0 [ 1003.160221] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 [ 1003.169550] Call Trace: [ 1003.172118] dump_stack+0x1b2/0x281 [ 1003.175723] nmi_cpu_backtrace.cold+0x57/0x93 [ 1003.180217] ? irq_force_complete_move+0x350/0x350 [ 1003.185135] nmi_trigger_cpumask_backtrace+0x13a/0x180 [ 1003.190390] watchdog+0x5b9/0xb40 [ 1003.193819] ? hungtask_pm_notify+0x50/0x50 [ 1003.198114] kthread+0x30d/0x420 [ 1003.201459] ? kthread_create_on_node+0xd0/0xd0 [ 1003.206106] ret_from_fork+0x24/0x30 [ 1003.209874] Sending NMI from CPU 0 to CPUs 1: [ 1003.214704] NMI backtrace for cpu 1 [ 1003.214708] CPU: 1 PID: 4618 Comm: systemd-journal Not tainted 4.14.288-syzkaller #0 [ 1003.214712] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 [ 1003.214715] task: ffff8880a1a826c0 task.stack: ffff8880a1a88000 [ 1003.214718] RIP: 0010:__lock_acquire+0x225/0x3f20 [ 1003.214721] RSP: 0018:ffff8880a1a8fb88 EFLAGS: 00000002 [ 1003.214726] RAX: ffffffff8b9f4840 RBX: 0000000000000000 RCX: 0000000000000000 [ 1003.214729] RDX: 1ffffffff11fb05d RSI: 0000000000000000 RDI: ffffffff88fd82e8 [ 1003.214733] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 [ 1003.214736] R10: 0000000000000001 R11: ffff8880a1a826c0 R12: ffffffff88fd82e0 [ 1003.214740] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8beccd80 [ 1003.214750] FS: 00007ff21a2448c0(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 1003.214753] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1003.214756] CR2: 00007ff217633000 CR3: 00000000a1e45000 CR4: 00000000003406e0 [ 1003.214760] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1003.214763] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1003.214765] Call Trace: [ 1003.214767] ? putname+0xcd/0x110 [ 1003.214770] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 1003.214772] ? seccomp_run_filters+0x151/0x540 [ 1003.214774] ? putname+0xcd/0x110 [ 1003.214776] ? trace_hardirqs_on+0x10/0x10 [ 1003.214778] ? getname+0x20/0x20 [ 1003.214781] ? __seccomp_filter+0xbd/0xdd0 [ 1003.214783] ? seccomp_send_sigsys+0x180/0x180 [ 1003.214785] lock_acquire+0x170/0x3f0 [ 1003.214788] ? fs_reclaim_acquire+0xd4/0x120 [ 1003.214790] fs_reclaim_acquire+0xf4/0x120 [ 1003.214793] ? fs_reclaim_acquire+0xd4/0x120 [ 1003.214795] kmem_cache_alloc+0x22/0x3c0 [ 1003.214797] getname_flags+0xc8/0x550 [ 1003.214799] do_sys_open+0x1ce/0x410 [ 1003.214801] ? filp_open+0x60/0x60 [ 1003.214803] ? do_syscall_64+0x4c/0x640 [ 1003.214806] ? do_sys_open+0x410/0x410 [ 1003.214808] do_syscall_64+0x1d5/0x640 [ 1003.214811] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 1003.214813] RIP: 0033:0x7ff2197d3840 [ 1003.214815] RSP: 002b:00007fffd47038f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 1003.214821] RAX: ffffffffffffffda RBX: 00007fffd4703c00 RCX: 00007ff2197d3840 [ 1003.214825] RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 0000560160bae7d0 [ 1003.214828] RBP: 000000000000000d R08: 000000000000ffc0 R09: 00000000ffffffff [ 1003.214831] R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff [ 1003.214835] R13: 0000560160baa040 R14: 00007fffd4703bc0 R15: 0000560160bb7490 [ 1003.214836] Code: 4b 8d 7c f4 08 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 5e 2a 00 00 4b 8b 44 f4 08 48 85 c0 0f 84 31 ff ff ff f0 ff 80 38 01 00 00 <49> 8d b3 80 08 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 f1 48 [ 1003.215385] Kernel panic - not syncing: hung_task: blocked tasks [ 1003.480846] CPU: 0 PID: 1533 Comm: khungtaskd Not tainted 4.14.288-syzkaller #0 [ 1003.488275] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 [ 1003.497604] Call Trace: [ 1003.500176] dump_stack+0x1b2/0x281 [ 1003.503779] panic+0x1f9/0x42d [ 1003.506947] ? add_taint.cold+0x16/0x16 [ 1003.510901] watchdog+0x5ca/0xb40 [ 1003.514339] ? hungtask_pm_notify+0x50/0x50 [ 1003.518638] kthread+0x30d/0x420 [ 1003.521994] ? kthread_create_on_node+0xd0/0xd0 [ 1003.526645] ret_from_fork+0x24/0x30 [ 1003.530618] Kernel Offset: disabled [ 1003.534244] Rebooting in 86400 seconds..