INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes INIT: Id "1" respawning too fast: disabled for 5 minutes [ 1005.674761] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.95' (ECDSA) to the list of known hosts. [ 1011.157486] random: sshd: uninitialized urandom read (32 bytes read) [ 1011.251077] audit: type=1400 audit(1556427717.056:7): avc: denied { map } for pid=1949 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2019/04/28 05:01:57 parsed 1 programs [ 1012.157535] audit: type=1400 audit(1556427717.956:8): avc: denied { map } for pid=1949 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=5011 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 [ 1012.967627] random: cc1: uninitialized urandom read (8 bytes read) 2019/04/28 05:02:00 executed programs: 0 [ 1014.692493] audit: type=1400 audit(1556427720.496:9): avc: denied { map } for pid=1949 comm="syz-execprog" path="/root/syzkaller-shm246406471" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 1288.160377] INFO: task syz-executor.3:1966 blocked for more than 140 seconds. [ 1288.167758] Not tainted 4.14.113+ #61 [ 1288.173055] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1288.181163] syz-executor.3 D25640 1966 1963 0x00000000 [ 1288.186792] Call Trace: [ 1288.189553] ? __schedule+0x91c/0x1f30 [ 1288.193804] ? __sched_text_start+0x8/0x8 [ 1288.197948] ? lock_downgrade+0x5d0/0x5d0 [ 1288.202295] ? lock_acquire+0x10f/0x380 [ 1288.206261] ? __mutex_lock+0x2c1/0x1430 [ 1288.210693] schedule+0x92/0x1c0 [ 1288.214072] schedule_preempt_disabled+0x13/0x20 [ 1288.218824] __mutex_lock+0x559/0x1430 [ 1288.223132] ? trace_hardirqs_on+0x10/0x10 [ 1288.227370] ? lo_release+0x78/0x190 [ 1288.231433] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1288.236899] ? lock_downgrade+0x5d0/0x5d0 [ 1288.241300] ? lock_acquire+0x10f/0x380 [ 1288.245268] ? __blkdev_put+0x1cb/0x6d0 [ 1288.249229] ? lo_compat_ioctl+0x130/0x130 [ 1288.253984] ? lo_release+0x78/0x190 [ 1288.257708] lo_release+0x78/0x190 [ 1288.261479] ? lo_compat_ioctl+0x130/0x130 [ 1288.265709] __blkdev_put+0x518/0x6d0 [ 1288.269564] ? bd_set_size+0xb0/0xb0 [ 1288.273662] ? blkdev_put+0x75/0x4c0 [ 1288.277381] ? blkdev_put+0x4c0/0x4c0 [ 1288.281451] blkdev_close+0x86/0xb0 [ 1288.285143] __fput+0x25e/0x700 [ 1288.288430] task_work_run+0x118/0x190 [ 1288.292743] exit_to_usermode_loop+0x13b/0x160 [ 1288.297330] do_syscall_64+0x372/0x4b0 [ 1288.301722] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1288.307146] INFO: task syz-executor.0:1974 blocked for more than 140 seconds. [ 1288.314642] Not tainted 4.14.113+ #61 [ 1288.319082] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1288.327364] syz-executor.0 D25640 1974 1970 0x00000000 [ 1288.333046] Call Trace: [ 1288.335689] ? __schedule+0x91c/0x1f30 [ 1288.339581] ? __sched_text_start+0x8/0x8 [ 1288.344177] ? lock_downgrade+0x5d0/0x5d0 [ 1288.348326] ? lock_acquire+0x10f/0x380 [ 1288.352613] ? __mutex_lock+0x2c1/0x1430 [ 1288.356680] schedule+0x92/0x1c0 [ 1288.360182] schedule_preempt_disabled+0x13/0x20 [ 1288.364955] __mutex_lock+0x559/0x1430 [ 1288.368859] ? blkdev_reread_part+0x1b/0x40 [ 1288.373291] ? mark_held_locks+0xa6/0xf0 [ 1288.377360] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1288.382879] ? trace_hardirqs_on_caller+0x37b/0x540 [ 1288.387890] ? _raw_spin_unlock_irqrestore+0x41/0x70 [ 1288.393263] ? __wake_up_common_lock+0xe0/0x170 [ 1288.397936] ? blk_mq_unfreeze_queue+0x38/0x70 [ 1288.402867] ? blkdev_reread_part+0x1b/0x40 [ 1288.407293] blkdev_reread_part+0x1b/0x40 [ 1288.411530] loop_reread_partitions+0x72/0x80 [ 1288.416035] loop_clr_fd+0x828/0xac0 [ 1288.419742] lo_ioctl+0x813/0x1970 [ 1288.423369] ? kasan_slab_free+0xb0/0x190 [ 1288.427526] ? kmem_cache_free+0xc4/0x330 [ 1288.431778] ? putname+0xcd/0x110 [ 1288.435230] ? do_sys_open+0x250/0x590 [ 1288.439102] ? do_syscall_64+0x19b/0x4b0 [ 1288.443239] ? loop_clr_fd+0xac0/0xac0 [ 1288.447259] blkdev_ioctl+0x4d9/0x1810 [ 1288.451597] ? blkpg_ioctl+0x910/0x910 [ 1288.455651] ? lock_downgrade+0x5d0/0x5d0 [ 1288.459791] ? lock_acquire+0x10f/0x380 [ 1288.463972] ? debug_check_no_obj_freed+0x148/0x5c0 [ 1288.469098] ? _raw_spin_unlock_irqrestore+0x54/0x70 [ 1288.474283] ? trace_hardirqs_on_caller+0x37b/0x540 [ 1288.479311] block_ioctl+0xd9/0x120 [ 1288.483014] ? blkdev_fallocate+0x3b0/0x3b0 [ 1288.487342] do_vfs_ioctl+0xabe/0x1040 [ 1288.491305] ? selinux_file_ioctl+0x426/0x590 [ 1288.495888] ? selinux_file_ioctl+0x116/0x590 [ 1288.500602] ? ioctl_preallocate+0x1e0/0x1e0 [ 1288.505006] ? selinux_parse_skb.constprop.0+0x16b0/0x16b0 [ 1288.510679] ? rcu_read_lock_sched_held+0x10a/0x130 [ 1288.515835] ? putname+0xcd/0x110 [ 1288.519274] ? do_sys_open+0x255/0x590 [ 1288.523275] ? filp_open+0x60/0x60 [ 1288.526840] ? security_file_ioctl+0x7c/0xb0 [ 1288.531348] SyS_ioctl+0x7f/0xb0 [ 1288.534713] ? do_vfs_ioctl+0x1040/0x1040 [ 1288.538873] do_syscall_64+0x19b/0x4b0 [ 1288.542873] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1288.548414] INFO: task blkid:2923 blocked for more than 140 seconds. [ 1288.554988] Not tainted 4.14.113+ #61 [ 1288.559306] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1288.567341] blkid D28664 2923 310 0x00000004 [ 1288.573005] Call Trace: [ 1288.575583] ? __schedule+0x91c/0x1f30 [ 1288.579451] ? __sched_text_start+0x8/0x8 [ 1288.583815] ? lock_downgrade+0x5d0/0x5d0 [ 1288.587974] ? lock_acquire+0x10f/0x380 [ 1288.592019] ? __mutex_lock+0x2c1/0x1430 [ 1288.596082] schedule+0x92/0x1c0 [ 1288.599434] schedule_preempt_disabled+0x13/0x20 [ 1288.604406] __mutex_lock+0x559/0x1430 [ 1288.608306] ? trace_hardirqs_on+0x10/0x10 [ 1288.612600] ? lo_release+0x19/0x190 [ 1288.616425] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1288.621980] ? lock_downgrade+0x5d0/0x5d0 [ 1288.626134] ? lock_acquire+0x10f/0x380 [ 1288.630240] ? __blkdev_put+0x1cb/0x6d0 [ 1288.634240] ? lo_compat_ioctl+0x130/0x130 [ 1288.638461] ? lo_release+0x19/0x190 [ 1288.642461] lo_release+0x19/0x190 [ 1288.646011] ? lo_compat_ioctl+0x130/0x130 [ 1288.650296] __blkdev_put+0x518/0x6d0 [ 1288.654105] ? bd_set_size+0xb0/0xb0 [ 1288.657916] ? blkdev_put+0x75/0x4c0 [ 1288.661804] ? blkdev_put+0x4c0/0x4c0 [ 1288.665625] blkdev_close+0x86/0xb0 [ 1288.669461] __fput+0x25e/0x700 [ 1288.672822] task_work_run+0x118/0x190 [ 1288.676705] exit_to_usermode_loop+0x13b/0x160 [ 1288.681403] do_syscall_64+0x372/0x4b0 [ 1288.685293] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1288.690740] INFO: task syz-executor.1:2925 blocked for more than 140 seconds. [ 1288.698023] Not tainted 4.14.113+ #61 [ 1288.702410] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1288.710418] syz-executor.1 D28808 2925 1977 0x00000004 [ 1288.716046] Call Trace: [ 1288.718625] ? __schedule+0x91c/0x1f30 [ 1288.722615] ? __sched_text_start+0x8/0x8 [ 1288.726771] ? lock_downgrade+0x5d0/0x5d0 [ 1288.730977] ? lock_acquire+0x10f/0x380 [ 1288.735097] ? __mutex_lock+0x2c1/0x1430 [ 1288.739266] schedule+0x92/0x1c0 [ 1288.742799] schedule_preempt_disabled+0x13/0x20 [ 1288.747587] __mutex_lock+0x559/0x1430 [ 1288.751542] ? __mutex_unlock_slowpath+0x9a/0x7d0 [ 1288.756381] ? trace_hardirqs_on+0x10/0x10 [ 1288.760668] ? __blkdev_get+0xf3/0xf90 [ 1288.764565] ? refcount_inc_not_zero+0x81/0xe0 [ 1288.769142] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1288.774682] ? kobject_get_unless_zero+0x27/0x40 [ 1288.779442] ? get_disk+0xd0/0xd0 [ 1288.782980] ? exact_match+0x9/0x20 [ 1288.786610] ? kobj_lookup+0x325/0x410 [ 1288.790564] ? blkdev_ioctl+0x1810/0x1810 [ 1288.794717] ? __blkdev_get+0xf3/0xf90 [ 1288.798603] __blkdev_get+0xf3/0xf90 [ 1288.802415] ? __blkdev_put+0x6d0/0x6d0 [ 1288.806397] ? fsnotify+0x8b0/0x1150 [ 1288.810178] blkdev_get+0x97/0x8b0 [ 1288.813723] ? bd_acquire+0x171/0x2c0 [ 1288.817517] ? bd_may_claim+0xd0/0xd0 [ 1288.821410] ? lock_downgrade+0x5d0/0x5d0 [ 1288.825557] ? lock_acquire+0x10f/0x380 [ 1288.829514] ? bd_acquire+0x21/0x2c0 [ 1288.833347] blkdev_open+0x1cc/0x250 [ 1288.837142] ? security_file_open+0x88/0x190 [ 1288.841627] do_dentry_open+0x44e/0xdf0 [ 1288.845595] ? bd_acquire+0x2c0/0x2c0 [ 1288.849381] vfs_open+0x105/0x230 [ 1288.852881] path_openat+0xb6b/0x2b70 [ 1288.856742] ? path_mountpoint+0x9a0/0x9a0 [ 1288.861050] ? trace_hardirqs_on+0x10/0x10 [ 1288.865284] do_filp_open+0x1a1/0x280 [ 1288.869068] ? may_open_dev+0xe0/0xe0 [ 1288.872917] ? lock_downgrade+0x5d0/0x5d0 [ 1288.877055] ? lock_acquire+0x10f/0x380 [ 1288.881247] ? __alloc_fd+0x3f/0x490 [ 1288.884965] ? _raw_spin_unlock+0x29/0x40 [ 1288.889100] ? __alloc_fd+0x1bf/0x490 [ 1288.892950] do_sys_open+0x2ca/0x590 [ 1288.896676] ? filp_open+0x60/0x60 [ 1288.900270] ? do_syscall_64+0x43/0x4b0 [ 1288.904342] ? do_sys_open+0x590/0x590 [ 1288.908208] do_syscall_64+0x19b/0x4b0 [ 1288.912152] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1288.917566] INFO: task syz-executor.4:2926 blocked for more than 140 seconds. [ 1288.924901] Not tainted 4.14.113+ #61 [ 1288.929487] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1288.937494] syz-executor.4 D28808 2926 1968 0x00000004 [ 1288.943254] Call Trace: [ 1288.945942] ? __schedule+0x91c/0x1f30 [ 1288.949815] ? __sched_text_start+0x8/0x8 [ 1288.954028] ? lock_downgrade+0x5d0/0x5d0 [ 1288.958181] ? lock_acquire+0x10f/0x380 [ 1288.962261] ? __mutex_lock+0x2c1/0x1430 [ 1288.966331] schedule+0x92/0x1c0 [ 1288.969678] schedule_preempt_disabled+0x13/0x20 [ 1288.974598] __mutex_lock+0x559/0x1430 [ 1288.978480] ? __mutex_lock+0x6aa/0x1430 [ 1288.982701] ? __mutex_unlock_slowpath+0x9a/0x7d0 [ 1288.987549] ? lo_open+0x19/0xb0 [ 1288.991102] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1288.996538] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1289.002133] ? kobject_get_unless_zero+0x27/0x40 [ 1289.006877] ? get_disk+0xd0/0xd0 [ 1289.010413] ? exact_match+0x9/0x20 [ 1289.014043] ? blkdev_ioctl+0x1810/0x1810 [ 1289.018182] ? loop_unregister_transfer+0x90/0x90 [ 1289.023077] ? lo_open+0x19/0xb0 [ 1289.026499] lo_open+0x19/0xb0 [ 1289.029690] __blkdev_get+0x963/0xf90 [ 1289.033672] ? __blkdev_put+0x6d0/0x6d0 [ 1289.037648] ? fsnotify+0x8b0/0x1150 [ 1289.041443] blkdev_get+0x97/0x8b0 [ 1289.044979] ? bd_acquire+0x171/0x2c0 [ 1289.048762] ? bd_may_claim+0xd0/0xd0 [ 1289.052762] ? lock_downgrade+0x5d0/0x5d0 [ 1289.057056] ? lock_acquire+0x10f/0x380 [ 1289.061105] ? bd_acquire+0x21/0x2c0 [ 1289.064826] blkdev_open+0x1cc/0x250 [ 1289.068528] ? security_file_open+0x88/0x190 [ 1289.073003] do_dentry_open+0x44e/0xdf0 [ 1289.076993] ? bd_acquire+0x2c0/0x2c0 [ 1289.080854] vfs_open+0x105/0x230 [ 1289.084307] path_openat+0xb6b/0x2b70 [ 1289.088094] ? path_mountpoint+0x9a0/0x9a0 [ 1289.092412] ? trace_hardirqs_on+0x10/0x10 [ 1289.096744] do_filp_open+0x1a1/0x280 [ 1289.100605] ? may_open_dev+0xe0/0xe0 [ 1289.104403] ? lock_downgrade+0x5d0/0x5d0 [ 1289.108552] ? lock_acquire+0x10f/0x380 [ 1289.112578] ? __alloc_fd+0x3f/0x490 [ 1289.116307] ? _raw_spin_unlock+0x29/0x40 [ 1289.120585] ? __alloc_fd+0x1bf/0x490 [ 1289.124392] do_sys_open+0x2ca/0x590 [ 1289.128212] ? filp_open+0x60/0x60 [ 1289.131853] ? do_syscall_64+0x43/0x4b0 [ 1289.135833] ? do_sys_open+0x590/0x590 [ 1289.139828] do_syscall_64+0x19b/0x4b0 [ 1289.143912] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1289.149285] INFO: task syz-executor.5:2928 blocked for more than 140 seconds. [ 1289.156629] Not tainted 4.14.113+ #61 [ 1289.160981] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1289.169278] syz-executor.5 D28808 2928 1971 0x00000004 [ 1289.175056] Call Trace: [ 1289.177722] ? __schedule+0x91c/0x1f30 [ 1289.181709] ? __sched_text_start+0x8/0x8 [ 1289.185866] ? lock_downgrade+0x5d0/0x5d0 [ 1289.190119] ? lock_acquire+0x10f/0x380 [ 1289.194108] ? __mutex_lock+0x2c1/0x1430 [ 1289.198254] schedule+0x92/0x1c0 [ 1289.201700] schedule_preempt_disabled+0x13/0x20 [ 1289.206458] __mutex_lock+0x559/0x1430 [ 1289.210426] ? __mutex_unlock_slowpath+0x9a/0x7d0 [ 1289.215270] ? trace_hardirqs_on+0x10/0x10 [ 1289.219492] ? __blkdev_get+0xf3/0xf90 [ 1289.223473] ? refcount_inc_not_zero+0x81/0xe0 [ 1289.228067] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1289.233742] ? kobject_get_unless_zero+0x27/0x40 [ 1289.238493] ? get_disk+0xd0/0xd0 [ 1289.242114] ? exact_match+0x9/0x20 [ 1289.245746] ? kobj_lookup+0x325/0x410 [ 1289.249618] ? blkdev_ioctl+0x1810/0x1810 [ 1289.253847] ? __blkdev_get+0xf3/0xf90 [ 1289.257729] __blkdev_get+0xf3/0xf90 [ 1289.261569] ? __blkdev_put+0x6d0/0x6d0 [ 1289.265565] ? fsnotify+0x8b0/0x1150 [ 1289.269267] blkdev_get+0x97/0x8b0 [ 1289.272885] ? bd_acquire+0x171/0x2c0 [ 1289.276860] ? bd_may_claim+0xd0/0xd0 [ 1289.280817] ? lock_downgrade+0x5d0/0x5d0 [ 1289.284973] ? lock_acquire+0x10f/0x380 [ 1289.289044] ? bd_acquire+0x21/0x2c0 [ 1289.292854] blkdev_open+0x1cc/0x250 [ 1289.296567] ? security_file_open+0x88/0x190 [ 1289.301068] do_dentry_open+0x44e/0xdf0 [ 1289.305044] ? bd_acquire+0x2c0/0x2c0 [ 1289.308845] vfs_open+0x105/0x230 [ 1289.312383] path_openat+0xb6b/0x2b70 [ 1289.316194] ? path_mountpoint+0x9a0/0x9a0 [ 1289.320586] ? trace_hardirqs_on+0x10/0x10 [ 1289.324835] do_filp_open+0x1a1/0x280 [ 1289.328680] ? may_open_dev+0xe0/0xe0 [ 1289.332573] ? lock_downgrade+0x5d0/0x5d0 [ 1289.336726] ? lock_acquire+0x10f/0x380 [ 1289.340788] ? __alloc_fd+0x3f/0x490 [ 1289.344505] ? _raw_spin_unlock+0x29/0x40 [ 1289.348738] ? __alloc_fd+0x1bf/0x490 [ 1289.352633] do_sys_open+0x2ca/0x590 [ 1289.356347] ? filp_open+0x60/0x60 [ 1289.359944] ? do_syscall_64+0x43/0x4b0 [ 1289.364278] ? do_sys_open+0x590/0x590 [ 1289.368167] do_syscall_64+0x19b/0x4b0 [ 1289.372124] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1289.377552] INFO: task blkid:2931 blocked for more than 140 seconds. [ 1289.384134] Not tainted 4.14.113+ #61 [ 1289.388448] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1289.396735] blkid D27232 2931 309 0x00000004 [ 1289.402408] Call Trace: [ 1289.405006] ? __schedule+0x91c/0x1f30 [ 1289.408876] ? __sched_text_start+0x8/0x8 [ 1289.413065] ? lock_downgrade+0x5d0/0x5d0 [ 1289.417208] ? lock_acquire+0x10f/0x380 [ 1289.421259] ? __mutex_lock+0x2c1/0x1430 [ 1289.425324] schedule+0x92/0x1c0 [ 1289.428689] schedule_preempt_disabled+0x13/0x20 [ 1289.433521] __mutex_lock+0x559/0x1430 [ 1289.437418] ? __mutex_unlock_slowpath+0x9a/0x7d0 [ 1289.442709] ? trace_hardirqs_on+0x10/0x10 [ 1289.446947] ? __blkdev_get+0xf3/0xf90 [ 1289.450923] ? refcount_inc_not_zero+0x81/0xe0 [ 1289.455915] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1289.461458] ? kobject_get_unless_zero+0x27/0x40 [ 1289.466271] ? get_disk+0xd0/0xd0 [ 1289.469726] ? exact_match+0x9/0x20 [ 1289.473501] ? kobj_lookup+0x325/0x410 [ 1289.477392] ? blkdev_ioctl+0x1810/0x1810 [ 1289.481617] ? __blkdev_get+0xf3/0xf90 [ 1289.485502] __blkdev_get+0xf3/0xf90 [ 1289.489215] ? __blkdev_put+0x6d0/0x6d0 [ 1289.493349] ? fsnotify+0x8b0/0x1150 [ 1289.497073] blkdev_get+0x97/0x8b0 [ 1289.500661] ? bd_acquire+0x171/0x2c0 [ 1289.504456] ? bd_may_claim+0xd0/0xd0 [ 1289.508238] ? lock_downgrade+0x5d0/0x5d0 [ 1289.512421] ? lock_acquire+0x10f/0x380 [ 1289.516386] ? bd_acquire+0x21/0x2c0 [ 1289.520151] blkdev_open+0x1cc/0x250 [ 1289.523863] ? security_file_open+0x88/0x190 [ 1289.528327] do_dentry_open+0x44e/0xdf0 [ 1289.532502] ? bd_acquire+0x2c0/0x2c0 [ 1289.536305] vfs_open+0x105/0x230 [ 1289.539760] path_openat+0xb6b/0x2b70 [ 1289.543642] ? path_mountpoint+0x9a0/0x9a0 [ 1289.547882] ? trace_hardirqs_on+0x10/0x10 [ 1289.552300] do_filp_open+0x1a1/0x280 [ 1289.556128] ? may_open_dev+0xe0/0xe0 [ 1289.559936] ? lock_downgrade+0x5d0/0x5d0 [ 1289.564174] ? lock_acquire+0x10f/0x380 [ 1289.568146] ? __alloc_fd+0x3f/0x490 [ 1289.571947] ? _raw_spin_unlock+0x29/0x40 [ 1289.576095] ? __alloc_fd+0x1bf/0x490 [ 1289.579887] do_sys_open+0x2ca/0x590 [ 1289.583653] ? filp_open+0x60/0x60 [ 1289.587193] ? do_syscall_64+0x43/0x4b0 [ 1289.591241] ? do_sys_open+0x590/0x590 [ 1289.595138] do_syscall_64+0x19b/0x4b0 [ 1289.599016] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1289.604484] INFO: task blkid:2932 blocked for more than 140 seconds. [ 1289.612653] Not tainted 4.14.113+ #61 [ 1289.617000] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1289.625252] blkid D29248 2932 2929 0x00000004 [ 1289.631069] Call Trace: [ 1289.633723] ? __schedule+0x91c/0x1f30 [ 1289.637693] ? __sched_text_start+0x8/0x8 [ 1289.641898] ? lock_downgrade+0x5d0/0x5d0 [ 1289.646148] ? lock_acquire+0x10f/0x380 [ 1289.650171] ? __mutex_lock+0x2c1/0x1430 [ 1289.654227] schedule+0x92/0x1c0 [ 1289.657583] schedule_preempt_disabled+0x13/0x20 [ 1289.662375] __mutex_lock+0x559/0x1430 [ 1289.666257] ? __mutex_lock+0x6aa/0x1430 [ 1289.670386] ? __mutex_unlock_slowpath+0x9a/0x7d0 [ 1289.675311] ? lo_open+0x19/0xb0 [ 1289.678673] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1289.684177] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1289.689620] ? kobject_get_unless_zero+0x27/0x40 [ 1289.694527] ? lock_downgrade+0x5d0/0x5d0 [ 1289.698685] ? refcount_inc_not_zero+0x81/0xe0 [ 1289.703325] ? check_preemption_disabled+0x35/0x1f0 [ 1289.708382] ? loop_unregister_transfer+0x90/0x90 [ 1289.713387] ? lo_open+0x19/0xb0 [ 1289.716760] lo_open+0x19/0xb0 [ 1289.719948] __blkdev_get+0x267/0xf90 [ 1289.723803] ? __blkdev_put+0x6d0/0x6d0 [ 1289.727785] ? fsnotify+0x8b0/0x1150 [ 1289.731542] blkdev_get+0x97/0x8b0 [ 1289.735087] ? bd_acquire+0x171/0x2c0 [ 1289.738881] ? bd_may_claim+0xd0/0xd0 [ 1289.742757] ? lock_downgrade+0x5d0/0x5d0 [ 1289.746897] ? lock_acquire+0x10f/0x380 [ 1289.750931] ? bd_acquire+0x21/0x2c0 [ 1289.754765] blkdev_open+0x1cc/0x250 [ 1289.758493] ? security_file_open+0x88/0x190 [ 1289.762971] do_dentry_open+0x44e/0xdf0 [ 1289.767079] ? bd_acquire+0x2c0/0x2c0 [ 1289.770925] vfs_open+0x105/0x230 [ 1289.774363] path_openat+0xb6b/0x2b70 [ 1289.778152] ? path_mountpoint+0x9a0/0x9a0 [ 1289.782413] ? trace_hardirqs_on+0x10/0x10 [ 1289.786639] do_filp_open+0x1a1/0x280 [ 1289.790473] ? may_open_dev+0xe0/0xe0 [ 1289.794379] ? lock_downgrade+0x5d0/0x5d0 [ 1289.798599] ? lock_acquire+0x10f/0x380 [ 1289.802701] ? __alloc_fd+0x3f/0x490 [ 1289.806545] ? _raw_spin_unlock+0x29/0x40 [ 1289.810863] ? __alloc_fd+0x1bf/0x490 [ 1289.814668] do_sys_open+0x2ca/0x590 [ 1289.818466] ? filp_open+0x60/0x60 [ 1289.822085] ? do_syscall_64+0x43/0x4b0 [ 1289.826055] ? do_sys_open+0x590/0x590 [ 1289.829940] do_syscall_64+0x19b/0x4b0 [ 1289.834005] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1289.839376] INFO: task blkid:2933 blocked for more than 140 seconds. [ 1289.846063] Not tainted 4.14.113+ #61 [ 1289.850436] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1289.858580] blkid D28448 2933 2930 0x00000004 [ 1289.864391] Call Trace: [ 1289.866993] ? __schedule+0x91c/0x1f30 [ 1289.870920] ? __sched_text_start+0x8/0x8 [ 1289.875076] ? lock_downgrade+0x5d0/0x5d0 [ 1289.879202] ? lock_acquire+0x10f/0x380 [ 1289.883233] ? __mutex_lock+0x2c1/0x1430 [ 1289.887306] schedule+0x92/0x1c0 [ 1289.890902] schedule_preempt_disabled+0x13/0x20 [ 1289.895663] __mutex_lock+0x559/0x1430 [ 1289.899543] ? __mutex_unlock_slowpath+0x9a/0x7d0 [ 1289.904472] ? trace_hardirqs_on+0x10/0x10 [ 1289.908704] ? __blkdev_get+0xf3/0xf90 [ 1289.912676] ? refcount_inc_not_zero+0x81/0xe0 [ 1289.917257] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1289.922883] ? kobject_get_unless_zero+0x27/0x40 [ 1289.927632] ? get_disk+0xd0/0xd0 [ 1289.931259] ? exact_match+0x9/0x20 [ 1289.934885] ? kobj_lookup+0x325/0x410 [ 1289.938766] ? blkdev_ioctl+0x1810/0x1810 [ 1289.942978] ? __blkdev_get+0xf3/0xf90 [ 1289.946881] __blkdev_get+0xf3/0xf90 [ 1289.950658] ? __blkdev_put+0x6d0/0x6d0 [ 1289.954642] ? fsnotify+0x8b0/0x1150 [ 1289.958344] blkdev_get+0x97/0x8b0 [ 1289.962007] ? bd_acquire+0x171/0x2c0 [ 1289.965813] ? bd_may_claim+0xd0/0xd0 [ 1289.969620] ? lock_downgrade+0x5d0/0x5d0 [ 1289.978139] ? lock_acquire+0x10f/0x380 [ 1289.984561] ? bd_acquire+0x21/0x2c0 [ 1289.988268] blkdev_open+0x1cc/0x250 [ 1289.992073] ? security_file_open+0x88/0x190 [ 1289.996490] do_dentry_open+0x44e/0xdf0 [ 1290.000664] ? bd_acquire+0x2c0/0x2c0 [ 1290.004576] vfs_open+0x105/0x230 [ 1290.008924] path_openat+0xb6b/0x2b70 [ 1290.012812] ? path_mountpoint+0x9a0/0x9a0 [ 1290.017053] ? trace_hardirqs_on+0x10/0x10 [ 1290.021374] do_filp_open+0x1a1/0x280 [ 1290.025176] ? may_open_dev+0xe0/0xe0 [ 1290.029161] ? lock_downgrade+0x5d0/0x5d0 [ 1290.033526] ? lock_acquire+0x10f/0x380 [ 1290.037557] ? __alloc_fd+0x3f/0x490 [ 1290.041353] ? _raw_spin_unlock+0x29/0x40 [ 1290.045495] ? __alloc_fd+0x1bf/0x490 [ 1290.049355] do_sys_open+0x2ca/0x590 [ 1290.053273] ? filp_open+0x60/0x60 [ 1290.056913] ? do_syscall_64+0x43/0x4b0 [ 1290.060967] ? do_sys_open+0x590/0x590 [ 1290.064853] do_syscall_64+0x19b/0x4b0 [ 1290.068839] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1290.074300] INFO: task blkid:2934 blocked for more than 140 seconds. [ 1290.080915] Not tainted 4.14.113+ #61 [ 1290.085327] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1290.093371] blkid D27216 2934 2927 0x00000004 [ 1290.099259] Call Trace: [ 1290.101936] ? __schedule+0x91c/0x1f30 [ 1290.106018] ? __sched_text_start+0x8/0x8 [ 1290.110251] ? lock_downgrade+0x5d0/0x5d0 [ 1290.114395] ? lock_acquire+0x10f/0x380 [ 1290.118362] ? __mutex_lock+0x2c1/0x1430 [ 1290.122538] schedule+0x92/0x1c0 [ 1290.125917] schedule_preempt_disabled+0x13/0x20 [ 1290.130854] __mutex_lock+0x559/0x1430 [ 1290.135015] ? __mutex_lock+0x6aa/0x1430 [ 1290.139066] ? __mutex_unlock_slowpath+0x9a/0x7d0 [ 1290.144002] ? lo_open+0x19/0xb0 [ 1290.147379] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1290.152936] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1290.158497] ? kobject_get_unless_zero+0x27/0x40 [ 1290.163466] ? lock_downgrade+0x5d0/0x5d0 [ 1290.167619] ? refcount_inc_not_zero+0x81/0xe0 [ 1290.172311] ? check_preemption_disabled+0x35/0x1f0 [ 1290.177337] ? loop_unregister_transfer+0x90/0x90 [ 1290.182336] ? lo_open+0x19/0xb0 [ 1290.185704] lo_open+0x19/0xb0 [ 1290.188893] __blkdev_get+0x267/0xf90 [ 1290.192780] ? __blkdev_put+0x6d0/0x6d0 [ 1290.196757] ? fsnotify+0x8b0/0x1150 [ 1290.200567] blkdev_get+0x97/0x8b0 [ 1290.205533] ? bd_acquire+0x171/0x2c0 [ 1290.209401] ? bd_may_claim+0xd0/0xd0 [ 1290.213289] ? lock_downgrade+0x5d0/0x5d0 [ 1290.217438] ? lock_acquire+0x10f/0x380 [ 1290.221611] ? bd_acquire+0x21/0x2c0 [ 1290.225407] blkdev_open+0x1cc/0x250 [ 1290.229119] ? security_file_open+0x88/0x190 [ 1290.233596] do_dentry_open+0x44e/0xdf0 [ 1290.237564] ? bd_acquire+0x2c0/0x2c0 [ 1290.241434] vfs_open+0x105/0x230 [ 1290.244888] path_openat+0xb6b/0x2b70 [ 1290.248686] ? path_mountpoint+0x9a0/0x9a0 [ 1290.253009] ? trace_hardirqs_on+0x10/0x10 [ 1290.257263] do_filp_open+0x1a1/0x280 [ 1290.261146] ? may_open_dev+0xe0/0xe0 [ 1290.264951] ? lock_downgrade+0x5d0/0x5d0 [ 1290.269087] ? lock_acquire+0x10f/0x380 [ 1290.273122] ? __alloc_fd+0x3f/0x490 [ 1290.276841] ? _raw_spin_unlock+0x29/0x40 [ 1290.281223] ? __alloc_fd+0x1bf/0x490 [ 1290.285037] do_sys_open+0x2ca/0x590 [ 1290.288837] ? filp_open+0x60/0x60 [ 1290.292587] ? do_syscall_64+0x43/0x4b0 [ 1290.296566] ? do_sys_open+0x590/0x590 [ 1290.300537] do_syscall_64+0x19b/0x4b0 [ 1290.304430] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1290.309914] [ 1290.309914] Showing all locks held in the system: [ 1290.316329] 1 lock held by khungtaskd/23: [ 1290.320558] #0: (tasklist_lock){.+.+}, at: [< (ptrval)>] debug_show_all_locks+0x7c/0x21a [ 1290.329652] 1 lock held by rsyslogd/1633: [ 1290.333894] #0: (&f->f_pos_lock){+.+.}, at: [< (ptrval)>] __fdget_pos+0xa6/0xc0 [ 1290.342217] 2 locks held by getty/1760: [ 1290.346176] #0: (&tty->ldisc_sem){++++}, at: [< (ptrval)>] tty_ldisc_ref_wait+0x22/0x80 [ 1290.355220] #1: (&ldata->atomic_read_lock){+.+.}, at: [< (ptrval)>] n_tty_read+0x1f7/0x1700 [ 1290.364563] 3 locks held by syz-executor.3/1966: [ 1290.369300] #0: (&bdev->bd_mutex){+.+.}, at: [< (ptrval)>] __blkdev_put+0xb1/0x6d0 [ 1290.377834] #1: (loop_index_mutex){+.+.}, at: [< (ptrval)>] lo_release+0x19/0x190 [ 1290.386481] #2: (loop_ctl_mutex#2){+.+.}, at: [< (ptrval)>] lo_release+0x78/0x190 [ 1290.396202] 2 locks held by syz-executor.0/1974: [ 1290.400999] #0: (loop_ctl_mutex/1){+.+.}, at: [< (ptrval)>] lo_ioctl+0x83/0x1970 [ 1290.410465] #1: (&bdev->bd_mutex){+.+.}, at: [< (ptrval)>] blkdev_reread_part+0x1b/0x40 [ 1290.419585] 2 locks held by blkid/2923: [ 1290.423627] #0: (&bdev->bd_mutex){+.+.}, at: [< (ptrval)>] __blkdev_put+0xb1/0x6d0 [ 1290.432156] #1: (loop_index_mutex){+.+.}, at: [< (ptrval)>] lo_release+0x19/0x190 [ 1290.440665] 1 lock held by syz-executor.1/2925: [ 1290.445429] #0: (&bdev->bd_mutex){+.+.}, at: [< (ptrval)>] __blkdev_get+0xf3/0xf90 [ 1290.453986] 2 locks held by syz-executor.4/2926: [ 1290.458769] #0: (&bdev->bd_mutex){+.+.}, at: [< (ptrval)>] __blkdev_get+0xf3/0xf90 [ 1290.467344] #1: (loop_index_mutex){+.+.}, at: [< (ptrval)>] lo_open+0x19/0xb0 [ 1290.475459] 1 lock held by syz-executor.5/2928: [ 1290.480151] #0: (&bdev->bd_mutex){+.+.}, at: [< (ptrval)>] __blkdev_get+0xf3/0xf90 [ 1290.488663] 1 lock held by blkid/2931: [ 1290.492593] #0: (&bdev->bd_mutex){+.+.}, at: [< (ptrval)>] __blkdev_get+0xf3/0xf90 [ 1290.501132] 2 locks held by blkid/2932: [ 1290.505083] #0: (&bdev->bd_mutex){+.+.}, at: [< (ptrval)>] __blkdev_get+0xf3/0xf90 [ 1290.513676] #1: (loop_index_mutex){+.+.}, at: [< (ptrval)>] lo_open+0x19/0xb0 [ 1290.521808] 1 lock held by blkid/2933: [ 1290.525675] #0: (&bdev->bd_mutex){+.+.}, at: [< (ptrval)>] __blkdev_get+0xf3/0xf90 [ 1290.534268] 2 locks held by blkid/2934: [ 1290.538234] #0: (&bdev->bd_mutex){+.+.}, at: [< (ptrval)>] __blkdev_get+0xf3/0xf90 [ 1290.546921] #1: (loop_index_mutex){+.+.}, at: [< (ptrval)>] lo_open+0x19/0xb0 [ 1290.555145] [ 1290.556755] ============================================= [ 1290.556755] [ 1290.563828] NMI backtrace for cpu 0 [ 1290.567586] CPU: 0 PID: 23 Comm: khungtaskd Not tainted 4.14.113+ #61 [ 1290.574195] Call Trace: [ 1290.576776] dump_stack+0xb9/0x10e [ 1290.580309] ? irq_force_complete_move.cold+0x2c/0x7b [ 1290.585567] nmi_cpu_backtrace.cold+0x47/0x86 [ 1290.590123] ? irq_force_complete_move.cold+0x7b/0x7b [ 1290.595374] ? nmi_trigger_cpumask_backtrace+0x119/0x147 [ 1290.600815] ? watchdog+0x5e2/0xb80 [ 1290.604465] ? hungtask_pm_notify+0x50/0x50 [ 1290.608780] ? kthread+0x310/0x420 [ 1290.612310] ? kthread_create_on_node+0xf0/0xf0 [ 1290.616978] ? ret_from_fork+0x3a/0x50 [ 1290.620962] Sending NMI from CPU 0 to CPUs 1: [ 1290.625496] NMI backtrace for cpu 1 skipped: idling at pc 0xffffffff9b64ece2 [ 1290.626456] Kernel panic - not syncing: hung_task: blocked tasks [ 1290.638827] CPU: 0 PID: 23 Comm: khungtaskd Not tainted 4.14.113+ #61 [ 1290.645447] Call Trace: [ 1290.648038] dump_stack+0xb9/0x10e [ 1290.651682] panic+0x1d9/0x3c2 [ 1290.654870] ? add_taint.cold+0x16/0x16 [ 1290.658828] ? _raw_spin_unlock_irqrestore+0x54/0x70 [ 1290.663923] ? cpumask_next+0x1f/0x30 [ 1290.667730] ? printk_safe_flush+0xac/0x110 [ 1290.672052] watchdog+0x5f3/0xb80 [ 1290.675502] ? hungtask_pm_notify+0x50/0x50 [ 1290.679944] kthread+0x310/0x420 [ 1290.683295] ? kthread_create_on_node+0xf0/0xf0 [ 1290.687947] ret_from_fork+0x3a/0x50 [ 1290.692033] Kernel Offset: 0x18e00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 1290.702967] Rebooting in 86400 seconds..