INIT: Id "6" respawning too fast: disabled for 5 minutes INIT: Id "1" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "4" respawning too fast: disabled for 5 minutes [ 986.192720] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.47' (ECDSA) to the list of known hosts. [ 991.697925] random: sshd: uninitialized urandom read (32 bytes read) [ 991.788962] audit: type=1400 audit(1551854368.736:8): avc: denied { map } for pid=2274 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 2019/03/06 06:39:29 parsed 1 programs [ 992.576433] audit: type=1400 audit(1551854369.526:9): avc: denied { map } for pid=2274 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=5005 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 [ 993.301270] random: cc1: uninitialized urandom read (8 bytes read) 2019/03/06 06:39:31 executed programs: 0 [ 994.623898] audit: type=1400 audit(1551854371.576:10): avc: denied { map } for pid=2274 comm="syz-execprog" path="/root/syzkaller-shm825296780" dev="sda1" ino=16512 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 1144.800130] INFO: task syz-executor.0:2298 blocked for more than 140 seconds. [ 1144.807517] Not tainted 4.14.105+ #24 [ 1144.812064] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1144.820143] syz-executor.0 D25600 2298 1 0x00000004 [ 1144.825767] Call Trace: [ 1144.828357] ? __schedule+0x91c/0x1f30 [ 1144.832453] ? __schedule+0x924/0x1f30 [ 1144.836341] ? __sched_text_start+0x8/0x8 [ 1144.840629] ? lock_downgrade+0x5d0/0x5d0 [ 1144.844774] ? lock_acquire+0x10f/0x380 [ 1144.848729] ? __mutex_lock+0x2c1/0x1430 [ 1144.852905] schedule+0x92/0x1c0 [ 1144.856287] schedule_preempt_disabled+0x13/0x20 [ 1144.861096] __mutex_lock+0x559/0x1430 [ 1144.864987] ? __mutex_lock+0x6aa/0x1430 [ 1144.869029] ? __mutex_unlock_slowpath+0x9a/0x7d0 [ 1144.873933] ? lo_open+0x19/0xb0 [ 1144.877301] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1144.882801] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1144.888249] ? kobject_get_unless_zero+0x27/0x40 [ 1144.893048] ? get_disk+0xd0/0xd0 [ 1144.896601] ? exact_match+0x9/0x20 [ 1144.900288] ? blkdev_ioctl+0x1810/0x1810 [ 1144.904461] ? loop_unregister_transfer+0x90/0x90 [ 1144.909283] ? lo_open+0x19/0xb0 [ 1144.912702] lo_open+0x19/0xb0 [ 1144.915891] __blkdev_get+0x963/0xf90 [ 1144.919678] ? __blkdev_put+0x6d0/0x6d0 [ 1144.923752] ? fsnotify+0x8b0/0x1150 [ 1144.927471] blkdev_get+0x97/0x8b0 [ 1144.931473] ? bd_acquire+0x171/0x2c0 [ 1144.935373] ? bd_may_claim+0xd0/0xd0 [ 1144.939153] ? lock_downgrade+0x5d0/0x5d0 [ 1144.943362] ? lock_acquire+0x10f/0x380 [ 1144.947338] ? bd_acquire+0x21/0x2c0 [ 1144.951107] blkdev_open+0x1cc/0x250 [ 1144.954821] ? security_file_open+0x88/0x190 [ 1144.959739] do_dentry_open+0x41b/0xd60 [ 1144.963765] ? bd_acquire+0x2c0/0x2c0 [ 1144.967567] vfs_open+0x105/0x230 [ 1144.971126] path_openat+0xb6b/0x2b70 [ 1144.974934] ? path_mountpoint+0x9a0/0x9a0 [ 1144.979153] ? trace_hardirqs_on+0x10/0x10 [ 1144.983450] do_filp_open+0x1a1/0x280 [ 1144.987248] ? may_open_dev+0xe0/0xe0 [ 1144.991082] ? lock_downgrade+0x5d0/0x5d0 [ 1144.995386] ? lock_acquire+0x10f/0x380 [ 1144.999372] ? __alloc_fd+0x3f/0x490 [ 1145.003153] ? _raw_spin_unlock+0x29/0x40 [ 1145.007301] ? __alloc_fd+0x1bf/0x490 [ 1145.011156] do_sys_open+0x2ca/0x590 [ 1145.014867] ? filp_open+0x60/0x60 [ 1145.018396] ? SyS_mkdirat+0x146/0x220 [ 1145.022353] ? _raw_spin_unlock_irq+0x35/0x50 [ 1145.026853] ? do_syscall_64+0x43/0x4b0 [ 1145.030879] ? do_sys_open+0x590/0x590 [ 1145.034876] do_syscall_64+0x19b/0x4b0 [ 1145.038867] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.044389] INFO: task syz-executor.1:2301 blocked for more than 140 seconds. [ 1145.051735] Not tainted 4.14.105+ #24 [ 1145.056049] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.064632] syz-executor.1 D25640 2301 1 0x00000004 [ 1145.070371] Call Trace: [ 1145.072960] ? __schedule+0x91c/0x1f30 [ 1145.076834] ? __sched_text_start+0x8/0x8 [ 1145.081058] ? lock_downgrade+0x5d0/0x5d0 [ 1145.085207] ? lock_acquire+0x10f/0x380 [ 1145.089165] ? __mutex_lock+0x2c1/0x1430 [ 1145.093298] schedule+0x92/0x1c0 [ 1145.096667] schedule_preempt_disabled+0x13/0x20 [ 1145.101478] __mutex_lock+0x559/0x1430 [ 1145.105365] ? __mutex_unlock_slowpath+0x9a/0x7d0 [ 1145.110262] ? trace_hardirqs_on+0x10/0x10 [ 1145.114496] ? __blkdev_get+0xf3/0xf90 [ 1145.118369] ? refcount_inc_not_zero+0x81/0xe0 [ 1145.123106] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1145.128564] ? kobject_get_unless_zero+0x27/0x40 [ 1145.133406] ? get_disk+0xd0/0xd0 [ 1145.136865] ? exact_match+0x9/0x20 [ 1145.140574] ? kobj_lookup+0x325/0x410 [ 1145.144577] ? blkdev_ioctl+0x1810/0x1810 [ 1145.148714] ? __blkdev_get+0xf3/0xf90 [ 1145.152680] __blkdev_get+0xf3/0xf90 [ 1145.156400] ? __blkdev_put+0x6d0/0x6d0 [ 1145.160739] ? fsnotify+0x8b0/0x1150 [ 1145.164467] blkdev_get+0x97/0x8b0 [ 1145.167989] ? bd_acquire+0x171/0x2c0 [ 1145.171866] ? bd_may_claim+0xd0/0xd0 [ 1145.175670] ? lock_downgrade+0x5d0/0x5d0 [ 1145.179798] ? lock_acquire+0x10f/0x380 [ 1145.183969] ? bd_acquire+0x21/0x2c0 [ 1145.187696] blkdev_open+0x1cc/0x250 [ 1145.191889] ? security_file_open+0x88/0x190 [ 1145.196401] do_dentry_open+0x41b/0xd60 [ 1145.200584] ? bd_acquire+0x2c0/0x2c0 [ 1145.204392] vfs_open+0x105/0x230 [ 1145.207841] path_openat+0xb6b/0x2b70 [ 1145.211722] ? path_mountpoint+0x9a0/0x9a0 [ 1145.215959] ? trace_hardirqs_on+0x10/0x10 [ 1145.220312] do_filp_open+0x1a1/0x280 [ 1145.224121] ? may_open_dev+0xe0/0xe0 [ 1145.227912] ? lock_downgrade+0x5d0/0x5d0 [ 1145.232116] ? lock_acquire+0x10f/0x380 [ 1145.236089] ? __alloc_fd+0x3f/0x490 [ 1145.239786] ? _raw_spin_unlock+0x29/0x40 [ 1145.244008] ? __alloc_fd+0x1bf/0x490 [ 1145.247849] do_sys_open+0x2ca/0x590 [ 1145.251611] ? filp_open+0x60/0x60 [ 1145.255153] ? SyS_mkdirat+0x146/0x220 [ 1145.259025] ? _raw_spin_unlock_irq+0x35/0x50 [ 1145.263597] ? do_syscall_64+0x43/0x4b0 [ 1145.267573] ? do_sys_open+0x590/0x590 [ 1145.271524] do_syscall_64+0x19b/0x4b0 [ 1145.275414] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.280861] INFO: task syz-executor.5:2305 blocked for more than 140 seconds. [ 1145.288135] Not tainted 4.14.105+ #24 [ 1145.292513] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.300515] syz-executor.5 D25480 2305 1 0x00000004 [ 1145.306215] Call Trace: [ 1145.308813] ? __schedule+0x91c/0x1f30 [ 1145.312801] ? __sched_text_start+0x8/0x8 [ 1145.316952] ? lock_downgrade+0x5d0/0x5d0 [ 1145.321581] ? lock_acquire+0x10f/0x380 [ 1145.325555] ? __mutex_lock+0x2c1/0x1430 [ 1145.329608] schedule+0x92/0x1c0 [ 1145.333052] schedule_preempt_disabled+0x13/0x20 [ 1145.337908] __mutex_lock+0x559/0x1430 [ 1145.341860] ? __mutex_lock+0x6aa/0x1430 [ 1145.345923] ? __mutex_unlock_slowpath+0x9a/0x7d0 [ 1145.350841] ? lo_open+0x19/0xb0 [ 1145.354303] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1145.359735] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1145.365253] ? kobject_get_unless_zero+0x27/0x40 [ 1145.370072] ? lock_downgrade+0x5d0/0x5d0 [ 1145.374217] ? refcount_inc_not_zero+0x81/0xe0 [ 1145.378783] ? check_preemption_disabled+0x35/0x1f0 [ 1145.383863] ? loop_unregister_transfer+0x90/0x90 [ 1145.388720] ? lo_open+0x19/0xb0 [ 1145.392164] lo_open+0x19/0xb0 [ 1145.395365] __blkdev_get+0x267/0xf90 [ 1145.399151] ? __blkdev_put+0x6d0/0x6d0 [ 1145.403189] ? fsnotify+0x8b0/0x1150 [ 1145.406918] blkdev_get+0x97/0x8b0 [ 1145.410550] ? bd_acquire+0x171/0x2c0 [ 1145.414351] ? bd_may_claim+0xd0/0xd0 [ 1145.418133] ? lock_downgrade+0x5d0/0x5d0 [ 1145.422403] ? lock_acquire+0x10f/0x380 [ 1145.426397] ? bd_acquire+0x21/0x2c0 [ 1145.430175] blkdev_open+0x1cc/0x250 [ 1145.433888] ? security_file_open+0x88/0x190 [ 1145.438352] do_dentry_open+0x41b/0xd60 [ 1145.442481] ? bd_acquire+0x2c0/0x2c0 [ 1145.446287] vfs_open+0x105/0x230 [ 1145.449735] path_openat+0xb6b/0x2b70 [ 1145.454063] ? path_mountpoint+0x9a0/0x9a0 [ 1145.458296] ? trace_hardirqs_on+0x10/0x10 [ 1145.462622] do_filp_open+0x1a1/0x280 [ 1145.466436] ? may_open_dev+0xe0/0xe0 [ 1145.470640] ? lock_downgrade+0x5d0/0x5d0 [ 1145.474784] ? lock_acquire+0x10f/0x380 [ 1145.478741] ? __alloc_fd+0x3f/0x490 [ 1145.482530] ? _raw_spin_unlock+0x29/0x40 [ 1145.486677] ? __alloc_fd+0x1bf/0x490 [ 1145.490538] do_sys_open+0x2ca/0x590 [ 1145.494248] ? filp_open+0x60/0x60 [ 1145.497861] ? SyS_mkdirat+0x146/0x220 [ 1145.501827] ? _raw_spin_unlock_irq+0x35/0x50 [ 1145.506327] ? do_syscall_64+0x43/0x4b0 [ 1145.510354] ? do_sys_open+0x590/0x590 [ 1145.514239] do_syscall_64+0x19b/0x4b0 [ 1145.518120] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.523562] INFO: task blkid:3273 blocked for more than 140 seconds. [ 1145.530090] Not tainted 4.14.105+ #24 [ 1145.534469] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.542520] blkid D28808 3273 294 0x00000004 [ 1145.548159] Call Trace: [ 1145.550811] ? __schedule+0x91c/0x1f30 [ 1145.554707] ? __sched_text_start+0x8/0x8 [ 1145.558852] ? lock_downgrade+0x5d0/0x5d0 [ 1145.563078] ? lock_acquire+0x10f/0x380 [ 1145.567056] ? __mutex_lock+0x2c1/0x1430 [ 1145.571197] schedule+0x92/0x1c0 [ 1145.574566] schedule_preempt_disabled+0x13/0x20 [ 1145.579556] __mutex_lock+0x559/0x1430 [ 1145.583967] ? trace_hardirqs_on+0x10/0x10 [ 1145.588256] ? lo_release+0x78/0x190 [ 1145.592103] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1145.597571] ? lock_downgrade+0x5d0/0x5d0 [ 1145.601796] ? lock_acquire+0x10f/0x380 [ 1145.605775] ? __blkdev_put+0x1cb/0x6d0 [ 1145.609736] ? lo_compat_ioctl+0x130/0x130 [ 1145.614038] ? lo_release+0x78/0x190 [ 1145.617755] lo_release+0x78/0x190 [ 1145.621368] ? lo_compat_ioctl+0x130/0x130 [ 1145.625608] __blkdev_put+0x518/0x6d0 [ 1145.629415] ? bd_set_size+0xb0/0xb0 [ 1145.633214] ? blkdev_put+0x75/0x4c0 [ 1145.636930] ? blkdev_put+0x4c0/0x4c0 [ 1145.640770] blkdev_close+0x86/0xb0 [ 1145.644395] __fput+0x25e/0x700 [ 1145.647673] task_work_run+0x118/0x190 [ 1145.651615] exit_to_usermode_loop+0x13b/0x160 [ 1145.656202] do_syscall_64+0x372/0x4b0 [ 1145.660145] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.665522] INFO: task blkid:3277 blocked for more than 140 seconds. [ 1145.672082] Not tainted 4.14.105+ #24 [ 1145.676397] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.684490] blkid D28328 3277 3276 0x00000004 [ 1145.690161] Call Trace: [ 1145.692745] ? __schedule+0x91c/0x1f30 [ 1145.696620] ? __schedule+0x924/0x1f30 [ 1145.700608] ? __sched_text_start+0x8/0x8 [ 1145.704811] ? lock_downgrade+0x5d0/0x5d0 [ 1145.708955] ? lock_acquire+0x10f/0x380 [ 1145.713547] ? __mutex_lock+0x2c1/0x1430 [ 1145.717613] schedule+0x92/0x1c0 [ 1145.721062] schedule_preempt_disabled+0x13/0x20 [ 1145.725817] __mutex_lock+0x559/0x1430 [ 1145.729689] ? __mutex_lock+0x6aa/0x1430 [ 1145.733806] ? __mutex_unlock_slowpath+0x9a/0x7d0 [ 1145.738654] ? lo_open+0x19/0xb0 [ 1145.742078] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1145.747527] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1145.753036] ? kobject_get_unless_zero+0x27/0x40 [ 1145.757798] ? lock_downgrade+0x5d0/0x5d0 [ 1145.762083] ? refcount_inc_not_zero+0x81/0xe0 [ 1145.766682] ? check_preemption_disabled+0x35/0x1f0 [ 1145.771759] ? loop_unregister_transfer+0x90/0x90 [ 1145.776607] ? lo_open+0x19/0xb0 [ 1145.779958] lo_open+0x19/0xb0 [ 1145.783333] __blkdev_get+0x267/0xf90 [ 1145.787256] ? __blkdev_put+0x6d0/0x6d0 [ 1145.791405] ? fsnotify+0x8b0/0x1150 [ 1145.795218] blkdev_get+0x97/0x8b0 [ 1145.798808] ? bd_acquire+0x171/0x2c0 [ 1145.802673] ? bd_may_claim+0xd0/0xd0 [ 1145.806485] ? lock_downgrade+0x5d0/0x5d0 [ 1145.810701] ? lock_acquire+0x10f/0x380 [ 1145.814682] ? bd_acquire+0x21/0x2c0 [ 1145.818394] blkdev_open+0x1cc/0x250 [ 1145.822184] ? security_file_open+0x88/0x190 [ 1145.826597] do_dentry_open+0x41b/0xd60 [ 1145.830654] ? bd_acquire+0x2c0/0x2c0 [ 1145.834463] vfs_open+0x105/0x230 [ 1145.837905] path_openat+0xb6b/0x2b70 [ 1145.842219] ? path_mountpoint+0x9a0/0x9a0 [ 1145.846458] ? trace_hardirqs_on+0x10/0x10 [ 1145.850761] do_filp_open+0x1a1/0x280 [ 1145.854565] ? may_open_dev+0xe0/0xe0 [ 1145.858355] ? lock_downgrade+0x5d0/0x5d0 [ 1145.862563] ? lock_acquire+0x10f/0x380 [ 1145.866537] ? __alloc_fd+0x3f/0x490 [ 1145.870308] ? _raw_spin_unlock+0x29/0x40 [ 1145.874459] ? __alloc_fd+0x1bf/0x490 [ 1145.878247] do_sys_open+0x2ca/0x590 [ 1145.882023] ? filp_open+0x60/0x60 [ 1145.885568] ? do_syscall_64+0x43/0x4b0 [ 1145.889522] ? do_sys_open+0x590/0x590 [ 1145.893504] do_syscall_64+0x19b/0x4b0 [ 1145.897397] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.902850] INFO: task syz-executor.2:3278 blocked for more than 140 seconds. [ 1145.910148] Not tainted 4.14.105+ #24 [ 1145.914458] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.922501] syz-executor.2 D28688 3278 2295 0x00000004 [ 1145.928199] Call Trace: [ 1145.930855] ? __schedule+0x91c/0x1f30 [ 1145.934743] ? __sched_text_start+0x8/0x8 [ 1145.938877] ? lock_downgrade+0x5d0/0x5d0 [ 1145.943075] ? lock_acquire+0x10f/0x380 [ 1145.947052] ? __mutex_lock+0x2c1/0x1430 [ 1145.951180] schedule+0x92/0x1c0 [ 1145.954546] schedule_preempt_disabled+0x13/0x20 [ 1145.959280] __mutex_lock+0x559/0x1430 [ 1145.963231] ? blkdev_reread_part+0x1b/0x40 [ 1145.967555] ? mark_lock+0xfa0/0xfa0 [ 1145.971714] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1145.977166] ? _raw_spin_unlock_irqrestore+0x41/0x70 [ 1145.982330] ? __wake_up_common_lock+0xe0/0x170 [ 1145.987005] ? blkdev_reread_part+0x1b/0x40 [ 1145.991357] blkdev_reread_part+0x1b/0x40 [ 1145.995504] loop_reread_partitions+0x72/0x80 [ 1145.999987] loop_set_status+0xbff/0x11f0 [ 1146.004207] ? loop_set_status64+0xa5/0x100 [ 1146.008529] ? loop_set_status_old+0x2f0/0x2f0 [ 1146.013184] ? security_capable+0x8e/0xc0 [ 1146.017335] ? lo_ioctl+0x50b/0x1970 [ 1146.021073] ? __lock_acquire+0x56a/0x3fa0 [ 1146.025435] ? loop_clr_fd+0xac0/0xac0 [ 1146.029312] ? blkdev_ioctl+0x4d9/0x1810 [ 1146.033444] ? blkpg_ioctl+0x910/0x910 [ 1146.037346] ? trace_hardirqs_on+0x10/0x10 [ 1146.041620] ? exit_robust_list+0x210/0x210 [ 1146.045945] ? block_ioctl+0xd9/0x120 [ 1146.049732] ? blkdev_fallocate+0x3b0/0x3b0 [ 1146.054152] ? do_vfs_ioctl+0xabe/0x1040 [ 1146.058218] ? selinux_file_ioctl+0x426/0x590 [ 1146.062759] ? selinux_file_ioctl+0x116/0x590 [ 1146.067252] ? ioctl_preallocate+0x1e0/0x1e0 [ 1146.071775] ? selinux_parse_skb.constprop.0+0x16b0/0x16b0 [ 1146.077402] ? __might_fault+0x177/0x1b0 [ 1146.081578] ? _copy_to_user+0x82/0xd0 [ 1146.085470] ? nsecs_to_jiffies+0x30/0x30 [ 1146.089611] ? security_file_ioctl+0x7c/0xb0 [ 1146.094094] ? SyS_ioctl+0x7f/0xb0 [ 1146.097635] ? do_vfs_ioctl+0x1040/0x1040 [ 1146.102215] ? do_syscall_64+0x19b/0x4b0 [ 1146.106346] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1146.111784] INFO: task syz-executor.4:3279 blocked for more than 140 seconds. [ 1146.119102] Not tainted 4.14.105+ #24 [ 1146.123487] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1146.131560] syz-executor.4 D27816 3279 2303 0x00000004 [ 1146.137185] Call Trace: [ 1146.139756] ? __schedule+0x91c/0x1f30 [ 1146.143791] ? __sched_text_start+0x8/0x8 [ 1146.147989] ? lock_downgrade+0x5d0/0x5d0 [ 1146.152183] ? lock_acquire+0x10f/0x380 [ 1146.156153] ? __mutex_lock+0x2c1/0x1430 [ 1146.160388] schedule+0x92/0x1c0 [ 1146.163761] schedule_preempt_disabled+0x13/0x20 [ 1146.168497] __mutex_lock+0x559/0x1430 [ 1146.172445] ? __mutex_unlock_slowpath+0x9a/0x7d0 [ 1146.177287] ? trace_hardirqs_on+0x10/0x10 [ 1146.181553] ? __blkdev_get+0xf3/0xf90 [ 1146.185446] ? refcount_inc_not_zero+0x81/0xe0 [ 1146.190065] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1146.195520] ? kobject_get_unless_zero+0x27/0x40 [ 1146.200338] ? get_disk+0xd0/0xd0 [ 1146.203792] ? exact_match+0x9/0x20 [ 1146.207405] ? kobj_lookup+0x325/0x410 [ 1146.211346] ? blkdev_ioctl+0x1810/0x1810 [ 1146.215499] ? __blkdev_get+0xf3/0xf90 [ 1146.219370] __blkdev_get+0xf3/0xf90 [ 1146.223150] ? __blkdev_put+0x6d0/0x6d0 [ 1146.227125] ? fsnotify+0x8b0/0x1150 [ 1146.231268] blkdev_get+0x97/0x8b0 [ 1146.234801] ? bd_acquire+0x171/0x2c0 [ 1146.238580] ? bd_may_claim+0xd0/0xd0 [ 1146.242418] ? lock_downgrade+0x5d0/0x5d0 [ 1146.246571] ? lock_acquire+0x10f/0x380 [ 1146.250751] ? bd_acquire+0x21/0x2c0 [ 1146.254596] blkdev_open+0x1cc/0x250 [ 1146.258294] ? security_file_open+0x88/0x190 [ 1146.262758] do_dentry_open+0x41b/0xd60 [ 1146.266730] ? bd_acquire+0x2c0/0x2c0 [ 1146.270570] vfs_open+0x105/0x230 [ 1146.274024] path_openat+0xb6b/0x2b70 [ 1146.277809] ? path_mountpoint+0x9a0/0x9a0 [ 1146.282084] ? trace_hardirqs_on+0x10/0x10 [ 1146.286321] do_filp_open+0x1a1/0x280 [ 1146.290256] ? may_open_dev+0xe0/0xe0 [ 1146.294059] ? lock_downgrade+0x5d0/0x5d0 [ 1146.298193] ? lock_acquire+0x10f/0x380 [ 1146.302225] ? __alloc_fd+0x3f/0x490 [ 1146.305941] ? _raw_spin_unlock+0x29/0x40 [ 1146.310122] ? __alloc_fd+0x1bf/0x490 [ 1146.313928] do_sys_open+0x2ca/0x590 [ 1146.317624] ? filp_open+0x60/0x60 [ 1146.321232] ? do_syscall_64+0x43/0x4b0 [ 1146.325204] ? do_sys_open+0x590/0x590 [ 1146.329072] do_syscall_64+0x19b/0x4b0 [ 1146.333032] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1146.338506] INFO: task blkid:3280 blocked for more than 140 seconds. [ 1146.345036] Not tainted 4.14.105+ #24 [ 1146.349354] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1146.357441] blkid D29152 3280 295 0x00000004 [ 1146.363423] Call Trace: [ 1146.366022] ? __schedule+0x91c/0x1f30 [ 1146.369895] ? __sched_text_start+0x8/0x8 [ 1146.374091] ? lock_downgrade+0x5d0/0x5d0 [ 1146.378232] ? lock_acquire+0x10f/0x380 [ 1146.382238] ? __mutex_lock+0x2c1/0x1430 [ 1146.386301] schedule+0x92/0x1c0 [ 1146.389651] schedule_preempt_disabled+0x13/0x20 [ 1146.394563] __mutex_lock+0x559/0x1430 [ 1146.398468] ? __mutex_unlock_slowpath+0x9a/0x7d0 [ 1146.403360] ? trace_hardirqs_on+0x10/0x10 [ 1146.407595] ? __blkdev_get+0xf3/0xf90 [ 1146.411518] ? refcount_inc_not_zero+0x81/0xe0 [ 1146.416097] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1146.421778] ? kobject_get_unless_zero+0x27/0x40 [ 1146.426535] ? get_disk+0xd0/0xd0 [ 1146.429970] ? exact_match+0x9/0x20 [ 1146.433640] ? kobj_lookup+0x325/0x410 [ 1146.437527] ? blkdev_ioctl+0x1810/0x1810 [ 1146.441711] ? __blkdev_get+0xf3/0xf90 [ 1146.445723] __blkdev_get+0xf3/0xf90 [ 1146.449457] ? __blkdev_put+0x6d0/0x6d0 [ 1146.453490] ? fsnotify+0x8b0/0x1150 [ 1146.457205] blkdev_get+0x97/0x8b0 [ 1146.460776] ? bd_acquire+0x171/0x2c0 [ 1146.464580] ? bd_may_claim+0xd0/0xd0 [ 1146.468361] ? lock_downgrade+0x5d0/0x5d0 [ 1146.472539] ? lock_acquire+0x10f/0x380 [ 1146.476510] ? bd_acquire+0x21/0x2c0 [ 1146.480294] blkdev_open+0x1cc/0x250 [ 1146.484010] ? security_file_open+0x88/0x190 [ 1146.488403] do_dentry_open+0x41b/0xd60 [ 1146.492899] ? bd_acquire+0x2c0/0x2c0 [ 1146.496707] vfs_open+0x105/0x230 [ 1146.500192] path_openat+0xb6b/0x2b70 [ 1146.503995] ? path_mountpoint+0x9a0/0x9a0 [ 1146.508214] ? trace_hardirqs_on+0x10/0x10 [ 1146.512505] do_filp_open+0x1a1/0x280 [ 1146.516309] ? may_open_dev+0xe0/0xe0 [ 1146.520168] ? lock_downgrade+0x5d0/0x5d0 [ 1146.524316] ? lock_acquire+0x10f/0x380 [ 1146.528275] ? __alloc_fd+0x3f/0x490 [ 1146.532048] ? _raw_spin_unlock+0x29/0x40 [ 1146.536193] ? __alloc_fd+0x1bf/0x490 [ 1146.539978] do_sys_open+0x2ca/0x590 [ 1146.543730] ? filp_open+0x60/0x60 [ 1146.547270] ? do_syscall_64+0x43/0x4b0 [ 1146.551317] ? do_sys_open+0x590/0x590 [ 1146.555233] do_syscall_64+0x19b/0x4b0 [ 1146.559107] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1146.564635] INFO: task syz-executor.3:3282 blocked for more than 140 seconds. [ 1146.571936] Not tainted 4.14.105+ #24 [ 1146.576458] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1146.584737] syz-executor.3 D28328 3282 2289 0x00000004 [ 1146.590409] Call Trace: [ 1146.592992] ? __schedule+0x91c/0x1f30 [ 1146.596915] ? __sched_text_start+0x8/0x8 [ 1146.601114] ? lock_downgrade+0x5d0/0x5d0 [ 1146.605256] ? lock_acquire+0x10f/0x380 [ 1146.609227] ? __mutex_lock+0x2c1/0x1430 [ 1146.613374] schedule+0x92/0x1c0 [ 1146.616745] schedule_preempt_disabled+0x13/0x20 [ 1146.622078] __mutex_lock+0x559/0x1430 [ 1146.625954] ? __mutex_unlock_slowpath+0x9a/0x7d0 [ 1146.630965] ? trace_hardirqs_on+0x10/0x10 [ 1146.635195] ? __blkdev_get+0xf3/0xf90 [ 1146.639184] ? refcount_inc_not_zero+0x81/0xe0 [ 1146.643908] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1146.649362] ? kobject_get_unless_zero+0x27/0x40 [ 1146.654155] ? get_disk+0xd0/0xd0 [ 1146.657604] ? exact_match+0x9/0x20 [ 1146.661274] ? kobj_lookup+0x325/0x410 [ 1146.665162] ? blkdev_ioctl+0x1810/0x1810 [ 1146.669409] ? __blkdev_get+0xf3/0xf90 [ 1146.673343] __blkdev_get+0xf3/0xf90 [ 1146.677089] ? __blkdev_put+0x6d0/0x6d0 [ 1146.681103] ? fsnotify+0x8b0/0x1150 [ 1146.684829] blkdev_get+0x97/0x8b0 [ 1146.688352] ? bd_acquire+0x171/0x2c0 [ 1146.692193] ? bd_may_claim+0xd0/0xd0 [ 1146.695993] ? lock_downgrade+0x5d0/0x5d0 [ 1146.700177] ? lock_acquire+0x10f/0x380 [ 1146.704168] ? bd_acquire+0x21/0x2c0 [ 1146.707881] blkdev_open+0x1cc/0x250 [ 1146.711637] ? security_file_open+0x88/0x190 [ 1146.716064] do_dentry_open+0x41b/0xd60 [ 1146.720085] ? bd_acquire+0x2c0/0x2c0 [ 1146.723890] vfs_open+0x105/0x230 [ 1146.727326] path_openat+0xb6b/0x2b70 [ 1146.731185] ? path_mountpoint+0x9a0/0x9a0 [ 1146.735431] ? trace_hardirqs_on+0x10/0x10 [ 1146.739657] do_filp_open+0x1a1/0x280 [ 1146.743539] ? may_open_dev+0xe0/0xe0 [ 1146.747344] ? lock_downgrade+0x5d0/0x5d0 [ 1146.751924] ? lock_acquire+0x10f/0x380 [ 1146.755889] ? __alloc_fd+0x3f/0x490 [ 1146.759595] ? _raw_spin_unlock+0x29/0x40 [ 1146.763908] ? __alloc_fd+0x1bf/0x490 [ 1146.767714] do_sys_open+0x2ca/0x590 [ 1146.771572] ? filp_open+0x60/0x60 [ 1146.775117] ? do_syscall_64+0x43/0x4b0 [ 1146.779071] ? do_sys_open+0x590/0x590 [ 1146.783011] do_syscall_64+0x19b/0x4b0 [ 1146.786901] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1146.792451] [ 1146.792451] Showing all locks held in the system: [ 1146.798870] 1 lock held by khungtaskd/23: [ 1146.803114] #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a [ 1146.812199] 1 lock held by rsyslogd/1626: [ 1146.816333] #0: (&f->f_pos_lock){+.+.}, at: [] __fdget_pos+0xa6/0xc0 [ 1146.824641] 2 locks held by getty/1754: [ 1146.828606] #0: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref_wait+0x22/0x80 [ 1146.837591] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1f7/0x1700 [ 1146.846940] 2 locks held by syz-executor.0/2298: [ 1146.851728] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0xf3/0xf90 [ 1146.860356] #1: (loop_index_mutex){+.+.}, at: [] lo_open+0x19/0xb0 [ 1146.868410] 1 lock held by syz-executor.1/2301: [ 1146.873154] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0xf3/0xf90 [ 1146.881720] 2 locks held by syz-executor.5/2305: [ 1146.886494] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0xf3/0xf90 [ 1146.895063] #1: (loop_index_mutex){+.+.}, at: [] lo_open+0x19/0xb0 [ 1146.903245] 3 locks held by blkid/3273: [ 1146.907215] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_put+0xb1/0x6d0 [ 1146.915793] #1: (loop_index_mutex){+.+.}, at: [] lo_release+0x19/0x190 [ 1146.924266] #2: (loop_ctl_mutex#2){+.+.}, at: [] lo_release+0x78/0x190 [ 1146.932768] 2 locks held by blkid/3277: [ 1146.936735] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0xf3/0xf90 [ 1146.945287] #1: (loop_index_mutex){+.+.}, at: [] lo_open+0x19/0xb0 [ 1146.953405] 2 locks held by syz-executor.2/3278: [ 1146.958187] #0: (loop_ctl_mutex/1){+.+.}, at: [] lo_ioctl+0x83/0x1970 [ 1146.966560] #1: (&bdev->bd_mutex){+.+.}, at: [] blkdev_reread_part+0x1b/0x40 [ 1146.975541] 1 lock held by syz-executor.4/3279: [ 1146.980249] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0xf3/0xf90 [ 1146.988763] 1 lock held by blkid/3280: [ 1146.992707] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0xf3/0xf90 [ 1147.001284] 1 lock held by syz-executor.3/3282: [ 1147.005964] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0xf3/0xf90 [ 1147.014531] [ 1147.016152] ============================================= [ 1147.016152] [ 1147.023781] NMI backtrace for cpu 1 [ 1147.027417] CPU: 1 PID: 23 Comm: khungtaskd Not tainted 4.14.105+ #24 [ 1147.033976] Call Trace: [ 1147.036546] dump_stack+0xb9/0x10e [ 1147.040065] ? irq_force_complete_move+0x2c1/0x2e5 [ 1147.044976] nmi_cpu_backtrace.cold+0x47/0x86 [ 1147.049456] ? irq_force_complete_move.cold+0x7b/0x7b [ 1147.054626] ? nmi_trigger_cpumask_backtrace+0x119/0x147 [ 1147.060056] ? watchdog+0x5d3/0xb60 [ 1147.063664] ? reset_hung_task_detector+0x10/0x10 [ 1147.068505] ? kthread+0x310/0x420 [ 1147.072048] ? kthread_create_on_node+0xf0/0xf0 [ 1147.076703] ? ret_from_fork+0x3a/0x50 [ 1147.080678] Sending NMI from CPU 1 to CPUs 0: [ 1147.085215] NMI backtrace for cpu 0 skipped: idling at pc 0xffffffff9b4430b2 [ 1147.086180] Kernel panic - not syncing: hung_task: blocked tasks [ 1147.098554] CPU: 1 PID: 23 Comm: khungtaskd Not tainted 4.14.105+ #24 [ 1147.105110] Call Trace: [ 1147.107680] dump_stack+0xb9/0x10e [ 1147.111211] panic+0x1d9/0x3c2 [ 1147.114387] ? add_taint.cold+0x16/0x16 [ 1147.118344] ? irq_force_complete_move.cold+0x7b/0x7b [ 1147.123516] ? ___preempt_schedule+0x16/0x18 [ 1147.127929] watchdog+0x5e4/0xb60 [ 1147.131384] ? reset_hung_task_detector+0x10/0x10 [ 1147.136213] kthread+0x310/0x420 [ 1147.139578] ? kthread_create_on_node+0xf0/0xf0 [ 1147.144231] ret_from_fork+0x3a/0x50 [ 1147.148279] Kernel Offset: 0x18c00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 1147.159195] Rebooting in 86400 seconds..