INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "1" respawning too fast: disabled for 5 minutes [ 975.748679] audit: type=1400 audit(1552328221.716:7): avc: denied { map } for pid=1944 comm="sh" path="/bin/dash" dev="sda1" ino=1473 scontext=system_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [ 984.910393] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.126' (ECDSA) to the list of known hosts. [ 990.581669] random: sshd: uninitialized urandom read (32 bytes read) [ 990.670716] audit: type=1400 audit(1552328236.646:8): avc: denied { map } for pid=1951 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 2019/03/11 18:17:17 parsed 1 programs [ 991.498217] audit: type=1400 audit(1552328237.466:9): avc: denied { map } for pid=1951 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 [ 992.439629] random: cc1: uninitialized urandom read (8 bytes read) 2019/03/11 18:17:20 executed programs: 0 [ 994.549132] audit: type=1400 audit(1552328240.516:10): avc: denied { map } for pid=1951 comm="syz-execprog" path="/root/syzkaller-shm925532799" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 1144.800209] INFO: task syz-executor.2:1967 blocked for more than 140 seconds. [ 1144.807669] Not tainted 4.14.105+ #29 [ 1144.812485] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1144.820617] syz-executor.2 D25640 1967 1 0x00000004 [ 1144.826229] Call Trace: [ 1144.828804] ? __schedule+0x91c/0x1f30 [ 1144.832798] ? __sched_text_start+0x8/0x8 [ 1144.837008] ? lock_downgrade+0x5d0/0x5d0 [ 1144.841253] ? lock_acquire+0x10f/0x380 [ 1144.845222] ? __mutex_lock+0x64b/0x1430 [ 1144.849285] schedule+0x92/0x1c0 [ 1144.852746] schedule_preempt_disabled+0x13/0x20 [ 1144.857504] __mutex_lock+0x559/0x1430 [ 1144.861481] ? lo_ioctl+0x83/0x1970 [ 1144.865106] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1144.870621] ? lock_downgrade+0x5d0/0x5d0 [ 1144.874759] ? lock_acquire+0x10f/0x380 [ 1144.878718] ? check_preemption_disabled+0x35/0x1f0 [ 1144.883859] ? avc_has_extended_perms+0x706/0xc20 [ 1144.888723] ? lo_ioctl+0x83/0x1970 [ 1144.892415] lo_ioctl+0x83/0x1970 [ 1144.895885] ? kasan_slab_free+0xb0/0x190 [ 1144.900108] ? kmem_cache_free+0xc4/0x330 [ 1144.904265] ? putname+0xcd/0x110 [ 1144.907694] ? do_sys_open+0x250/0x590 [ 1144.911612] ? do_syscall_64+0x19b/0x4b0 [ 1144.915790] ? loop_clr_fd+0xac0/0xac0 [ 1144.920107] blkdev_ioctl+0x4d9/0x1810 [ 1144.924100] ? blkpg_ioctl+0x910/0x910 [ 1144.928081] ? lock_downgrade+0x5d0/0x5d0 [ 1144.932257] ? lock_acquire+0x10f/0x380 [ 1144.936229] ? debug_check_no_obj_freed+0x148/0x5c0 [ 1144.941730] ? _raw_spin_unlock_irqrestore+0x54/0x70 [ 1144.946821] ? trace_hardirqs_on_caller+0x37b/0x540 [ 1144.951869] block_ioctl+0xd9/0x120 [ 1144.955657] ? blkdev_fallocate+0x3b0/0x3b0 [ 1144.959973] do_vfs_ioctl+0xabe/0x1040 [ 1144.964060] ? selinux_file_ioctl+0x426/0x590 [ 1144.968554] ? selinux_file_ioctl+0x116/0x590 [ 1144.973082] ? ioctl_preallocate+0x1e0/0x1e0 [ 1144.977512] ? selinux_parse_skb.constprop.0+0x16b0/0x16b0 [ 1144.983211] ? rcu_read_lock_sched_held+0x10a/0x130 [ 1144.988250] ? putname+0xcd/0x110 [ 1144.991750] ? do_sys_open+0x255/0x590 [ 1144.995643] ? filp_open+0x60/0x60 [ 1144.999164] ? security_file_ioctl+0x7c/0xb0 [ 1145.003590] SyS_ioctl+0x7f/0xb0 [ 1145.006972] ? do_vfs_ioctl+0x1040/0x1040 [ 1145.011280] do_syscall_64+0x19b/0x4b0 [ 1145.015172] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.020628] INFO: task syz-executor.3:1974 blocked for more than 140 seconds. [ 1145.027906] Not tainted 4.14.105+ #29 [ 1145.032240] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.040462] syz-executor.3 D25640 1974 1 0x00000004 [ 1145.046073] Call Trace: [ 1145.048637] ? __schedule+0x91c/0x1f30 [ 1145.052554] ? __sched_text_start+0x8/0x8 [ 1145.056697] ? lock_downgrade+0x5d0/0x5d0 [ 1145.060914] ? lock_acquire+0x10f/0x380 [ 1145.064885] ? __mutex_lock+0x2c1/0x1430 [ 1145.068922] schedule+0x92/0x1c0 [ 1145.072735] schedule_preempt_disabled+0x13/0x20 [ 1145.077483] __mutex_lock+0x559/0x1430 [ 1145.081392] ? __mutex_lock+0x6aa/0x1430 [ 1145.085466] ? __mutex_unlock_slowpath+0x9a/0x7d0 [ 1145.090383] ? lo_open+0x19/0xb0 [ 1145.093751] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1145.099187] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1145.104673] ? kobject_get_unless_zero+0x27/0x40 [ 1145.109440] ? lock_downgrade+0x5d0/0x5d0 [ 1145.113610] ? refcount_inc_not_zero+0x81/0xe0 [ 1145.118187] ? check_preemption_disabled+0x35/0x1f0 [ 1145.123226] ? loop_unregister_transfer+0x90/0x90 [ 1145.128096] ? lo_open+0x19/0xb0 [ 1145.131601] lo_open+0x19/0xb0 [ 1145.134796] __blkdev_get+0x267/0xf90 [ 1145.138724] ? __blkdev_put+0x6d0/0x6d0 [ 1145.142733] ? fsnotify+0x8b0/0x1150 [ 1145.146452] blkdev_get+0x97/0x8b0 [ 1145.149970] ? bd_acquire+0x171/0x2c0 [ 1145.153796] ? bd_may_claim+0xd0/0xd0 [ 1145.157596] ? lock_downgrade+0x5d0/0x5d0 [ 1145.161758] ? lock_acquire+0x10f/0x380 [ 1145.165731] ? bd_acquire+0x21/0x2c0 [ 1145.169443] blkdev_open+0x1cc/0x250 [ 1145.173176] ? security_file_open+0x88/0x190 [ 1145.177578] do_dentry_open+0x41b/0xd60 [ 1145.181569] ? bd_acquire+0x2c0/0x2c0 [ 1145.185367] vfs_open+0x105/0x230 [ 1145.188802] path_openat+0xb6b/0x2b70 [ 1145.192648] ? path_mountpoint+0x9a0/0x9a0 [ 1145.196880] ? trace_hardirqs_on+0x10/0x10 [ 1145.201547] do_filp_open+0x1a1/0x280 [ 1145.205424] ? may_open_dev+0xe0/0xe0 [ 1145.209202] ? lock_downgrade+0x5d0/0x5d0 [ 1145.213370] ? lock_acquire+0x10f/0x380 [ 1145.217337] ? __alloc_fd+0x3f/0x490 [ 1145.221161] ? _raw_spin_unlock+0x29/0x40 [ 1145.225305] ? __alloc_fd+0x1bf/0x490 [ 1145.229086] do_sys_open+0x2ca/0x590 [ 1145.232831] ? filp_open+0x60/0x60 [ 1145.236363] ? SyS_mkdirat+0x146/0x220 [ 1145.240266] ? _raw_spin_unlock_irq+0x35/0x50 [ 1145.244775] ? do_syscall_64+0x43/0x4b0 [ 1145.248723] ? do_sys_open+0x590/0x590 [ 1145.252629] do_syscall_64+0x19b/0x4b0 [ 1145.256522] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.261932] INFO: task syz-executor.4:1975 blocked for more than 140 seconds. [ 1145.269236] Not tainted 4.14.105+ #29 [ 1145.273600] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.281591] syz-executor.4 D25160 1975 1 0x00000004 [ 1145.287221] Call Trace: [ 1145.289812] ? __schedule+0x91c/0x1f30 [ 1145.293725] ? __sched_text_start+0x8/0x8 [ 1145.297872] ? lock_downgrade+0x5d0/0x5d0 [ 1145.302047] ? lock_acquire+0x10f/0x380 [ 1145.306012] ? __mutex_lock+0x2c1/0x1430 [ 1145.310094] schedule+0x92/0x1c0 [ 1145.313467] schedule_preempt_disabled+0x13/0x20 [ 1145.318227] __mutex_lock+0x559/0x1430 [ 1145.322137] ? __mutex_lock+0x6aa/0x1430 [ 1145.326189] ? __mutex_unlock_slowpath+0x9a/0x7d0 [ 1145.331475] ? lo_open+0x19/0xb0 [ 1145.334833] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1145.340303] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1145.345761] ? kobject_get_unless_zero+0x27/0x40 [ 1145.350548] ? lock_downgrade+0x5d0/0x5d0 [ 1145.354689] ? refcount_inc_not_zero+0x81/0xe0 [ 1145.359246] ? check_preemption_disabled+0x35/0x1f0 [ 1145.364325] ? loop_unregister_transfer+0x90/0x90 [ 1145.369162] ? lo_open+0x19/0xb0 [ 1145.372549] lo_open+0x19/0xb0 [ 1145.375735] __blkdev_get+0x267/0xf90 [ 1145.379524] ? __blkdev_put+0x6d0/0x6d0 [ 1145.383537] ? fsnotify+0x8b0/0x1150 [ 1145.387247] blkdev_get+0x97/0x8b0 [ 1145.390820] ? bd_acquire+0x171/0x2c0 [ 1145.394620] ? bd_may_claim+0xd0/0xd0 [ 1145.398410] ? lock_downgrade+0x5d0/0x5d0 [ 1145.402647] ? lock_acquire+0x10f/0x380 [ 1145.406634] ? bd_acquire+0x21/0x2c0 [ 1145.410385] blkdev_open+0x1cc/0x250 [ 1145.414110] ? security_file_open+0x88/0x190 [ 1145.418511] do_dentry_open+0x41b/0xd60 [ 1145.422534] ? bd_acquire+0x2c0/0x2c0 [ 1145.426330] vfs_open+0x105/0x230 [ 1145.429764] path_openat+0xb6b/0x2b70 [ 1145.433614] ? path_mountpoint+0x9a0/0x9a0 [ 1145.437845] ? trace_hardirqs_on+0x10/0x10 [ 1145.442106] do_filp_open+0x1a1/0x280 [ 1145.445902] ? may_open_dev+0xe0/0xe0 [ 1145.449680] ? lock_downgrade+0x5d0/0x5d0 [ 1145.453864] ? lock_acquire+0x10f/0x380 [ 1145.457831] ? __alloc_fd+0x3f/0x490 [ 1145.462019] ? _raw_spin_unlock+0x29/0x40 [ 1145.466150] ? __alloc_fd+0x1bf/0x490 [ 1145.469938] do_sys_open+0x2ca/0x590 [ 1145.473676] ? filp_open+0x60/0x60 [ 1145.477207] ? SyS_mkdirat+0x146/0x220 [ 1145.481112] ? _raw_spin_unlock_irq+0x35/0x50 [ 1145.485604] ? do_syscall_64+0x43/0x4b0 [ 1145.489550] ? do_sys_open+0x590/0x590 [ 1145.493490] do_syscall_64+0x19b/0x4b0 [ 1145.497392] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.502807] INFO: task syz-executor.5:1978 blocked for more than 140 seconds. [ 1145.510200] Not tainted 4.14.105+ #29 [ 1145.514497] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.522482] syz-executor.5 D25640 1978 1 0x00000004 [ 1145.528112] Call Trace: [ 1145.530762] ? __schedule+0x91c/0x1f30 [ 1145.534656] ? __sched_text_start+0x8/0x8 [ 1145.538787] ? lock_downgrade+0x5d0/0x5d0 [ 1145.542954] ? lock_acquire+0x10f/0x380 [ 1145.546924] ? __mutex_lock+0x2c1/0x1430 [ 1145.551013] schedule+0x92/0x1c0 [ 1145.554372] schedule_preempt_disabled+0x13/0x20 [ 1145.559103] __mutex_lock+0x559/0x1430 [ 1145.563011] ? trace_hardirqs_on+0x10/0x10 [ 1145.567236] ? lo_release+0x78/0x190 [ 1145.571105] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1145.576563] ? lock_downgrade+0x5d0/0x5d0 [ 1145.580741] ? lock_acquire+0x10f/0x380 [ 1145.584717] ? __blkdev_put+0x1cb/0x6d0 [ 1145.588667] ? lo_compat_ioctl+0x130/0x130 [ 1145.593317] ? lo_release+0x78/0x190 [ 1145.597015] lo_release+0x78/0x190 [ 1145.601115] ? lo_compat_ioctl+0x130/0x130 [ 1145.605353] __blkdev_put+0x518/0x6d0 [ 1145.609133] ? bd_set_size+0xb0/0xb0 [ 1145.612878] ? blkdev_put+0x75/0x4c0 [ 1145.616586] ? blkdev_put+0x4c0/0x4c0 [ 1145.620411] blkdev_close+0x86/0xb0 [ 1145.624034] __fput+0x25e/0x700 [ 1145.627293] task_work_run+0x118/0x190 [ 1145.631221] exit_to_usermode_loop+0x13b/0x160 [ 1145.635804] do_syscall_64+0x372/0x4b0 [ 1145.639672] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.645072] INFO: task syz-executor.0:1981 blocked for more than 140 seconds. [ 1145.652378] Not tainted 4.14.105+ #29 [ 1145.656676] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.664651] syz-executor.0 D25640 1981 1 0x00000004 [ 1145.670297] Call Trace: [ 1145.672966] ? __schedule+0x91c/0x1f30 [ 1145.676844] ? __sched_text_start+0x8/0x8 [ 1145.681121] ? lock_downgrade+0x5d0/0x5d0 [ 1145.685280] ? lock_acquire+0x10f/0x380 [ 1145.689248] ? __mutex_lock+0x2c1/0x1430 [ 1145.693353] schedule+0x92/0x1c0 [ 1145.696745] schedule_preempt_disabled+0x13/0x20 [ 1145.701542] __mutex_lock+0x559/0x1430 [ 1145.705517] ? __mutex_lock+0x6aa/0x1430 [ 1145.709588] ? __mutex_unlock_slowpath+0x9a/0x7d0 [ 1145.714496] ? lo_open+0x19/0xb0 [ 1145.717861] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1145.723764] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1145.729210] ? kobject_get_unless_zero+0x27/0x40 [ 1145.733991] ? get_disk+0xd0/0xd0 [ 1145.737438] ? exact_match+0x9/0x20 [ 1145.741100] ? blkdev_ioctl+0x1810/0x1810 [ 1145.745312] ? loop_unregister_transfer+0x90/0x90 [ 1145.750218] ? lo_open+0x19/0xb0 [ 1145.753574] lo_open+0x19/0xb0 [ 1145.756744] __blkdev_get+0x963/0xf90 [ 1145.760602] ? __blkdev_put+0x6d0/0x6d0 [ 1145.764574] ? fsnotify+0x8b0/0x1150 [ 1145.768267] blkdev_get+0x97/0x8b0 [ 1145.771892] ? bd_acquire+0x171/0x2c0 [ 1145.775684] ? bd_may_claim+0xd0/0xd0 [ 1145.779525] ? lock_downgrade+0x5d0/0x5d0 [ 1145.783705] ? lock_acquire+0x10f/0x380 [ 1145.787685] ? bd_acquire+0x21/0x2c0 [ 1145.791431] blkdev_open+0x1cc/0x250 [ 1145.795141] ? security_file_open+0x88/0x190 [ 1145.799527] do_dentry_open+0x41b/0xd60 [ 1145.803517] ? bd_acquire+0x2c0/0x2c0 [ 1145.807315] vfs_open+0x105/0x230 [ 1145.810819] path_openat+0xb6b/0x2b70 [ 1145.814684] ? path_mountpoint+0x9a0/0x9a0 [ 1145.818906] ? trace_hardirqs_on+0x10/0x10 [ 1145.823178] do_filp_open+0x1a1/0x280 [ 1145.826974] ? may_open_dev+0xe0/0xe0 [ 1145.830835] ? lock_downgrade+0x5d0/0x5d0 [ 1145.834977] ? lock_acquire+0x10f/0x380 [ 1145.838929] ? __alloc_fd+0x3f/0x490 [ 1145.842721] ? _raw_spin_unlock+0x29/0x40 [ 1145.846905] ? __alloc_fd+0x1bf/0x490 [ 1145.851131] do_sys_open+0x2ca/0x590 [ 1145.854902] ? filp_open+0x60/0x60 [ 1145.858423] ? SyS_mkdirat+0x146/0x220 [ 1145.862365] ? _raw_spin_unlock_irq+0x35/0x50 [ 1145.866858] ? do_syscall_64+0x43/0x4b0 [ 1145.870853] ? do_sys_open+0x590/0x590 [ 1145.874732] do_syscall_64+0x19b/0x4b0 [ 1145.878596] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.884053] INFO: task syz-executor.1:2945 blocked for more than 140 seconds. [ 1145.891356] Not tainted 4.14.105+ #29 [ 1145.895653] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.903630] syz-executor.1 D28808 2945 1983 0x00000004 [ 1145.909255] Call Trace: [ 1145.911866] ? __schedule+0x91c/0x1f30 [ 1145.915773] ? __sched_text_start+0x8/0x8 [ 1145.919902] ? lock_downgrade+0x5d0/0x5d0 [ 1145.924084] ? lock_acquire+0x10f/0x380 [ 1145.928050] ? __mutex_lock+0x2c1/0x1430 [ 1145.932136] schedule+0x92/0x1c0 [ 1145.935498] schedule_preempt_disabled+0x13/0x20 [ 1145.940389] __mutex_lock+0x559/0x1430 [ 1145.944269] ? blkdev_reread_part+0x1b/0x40 [ 1145.948582] ? mark_lock+0xfa0/0xfa0 [ 1145.952321] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1145.957772] ? _raw_spin_unlock_irqrestore+0x41/0x70 [ 1145.962893] ? __wake_up_common_lock+0xe0/0x170 [ 1145.967566] ? blkdev_reread_part+0x1b/0x40 [ 1145.971917] blkdev_reread_part+0x1b/0x40 [ 1145.976088] loop_reread_partitions+0x72/0x80 [ 1145.981008] loop_set_status+0xbff/0x11f0 [ 1145.985153] ? loop_set_status64+0xa5/0x100 [ 1145.989554] ? loop_set_status_old+0x2f0/0x2f0 [ 1145.994197] ? lo_ioctl+0x83/0x1970 [ 1145.997854] ? lo_ioctl+0x50b/0x1970 [ 1146.001702] ? __lock_acquire+0x56a/0x3fa0 [ 1146.005933] ? loop_clr_fd+0xac0/0xac0 [ 1146.009797] ? blkdev_ioctl+0x4d9/0x1810 [ 1146.013891] ? blkpg_ioctl+0x910/0x910 [ 1146.017774] ? trace_hardirqs_on+0x10/0x10 [ 1146.022071] ? exit_robust_list+0x210/0x210 [ 1146.026387] ? block_ioctl+0xd9/0x120 [ 1146.030224] ? blkdev_fallocate+0x3b0/0x3b0 [ 1146.034537] ? do_vfs_ioctl+0xabe/0x1040 [ 1146.038575] ? selinux_file_ioctl+0x426/0x590 [ 1146.043115] ? selinux_file_ioctl+0x116/0x590 [ 1146.047600] ? ioctl_preallocate+0x1e0/0x1e0 [ 1146.052025] ? selinux_parse_skb.constprop.0+0x16b0/0x16b0 [ 1146.057652] ? __might_fault+0x177/0x1b0 [ 1146.061734] ? _copy_to_user+0x82/0xd0 [ 1146.065696] ? nsecs_to_jiffies+0x30/0x30 [ 1146.069843] ? security_file_ioctl+0x7c/0xb0 [ 1146.074285] ? SyS_ioctl+0x7f/0xb0 [ 1146.077820] ? do_vfs_ioctl+0x1040/0x1040 [ 1146.081994] ? do_syscall_64+0x19b/0x4b0 [ 1146.086096] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1146.091514] INFO: task blkid:2946 blocked for more than 140 seconds. [ 1146.098034] Not tainted 4.14.105+ #29 [ 1146.102393] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1146.110638] blkid D28808 2946 2848 0x00000004 [ 1146.116248] Call Trace: [ 1146.118813] ? __schedule+0x91c/0x1f30 [ 1146.122726] ? __sched_text_start+0x8/0x8 [ 1146.126903] ? lock_downgrade+0x5d0/0x5d0 [ 1146.131073] ? lock_acquire+0x10f/0x380 [ 1146.135042] ? __mutex_lock+0x2c1/0x1430 [ 1146.139080] schedule+0x92/0x1c0 [ 1146.142480] schedule_preempt_disabled+0x13/0x20 [ 1146.147245] __mutex_lock+0x559/0x1430 [ 1146.151159] ? trace_hardirqs_on+0x10/0x10 [ 1146.155386] ? lo_release+0x19/0x190 [ 1146.159080] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1146.164578] ? lock_downgrade+0x5d0/0x5d0 [ 1146.168720] ? lock_acquire+0x10f/0x380 [ 1146.172715] ? __blkdev_put+0x1cb/0x6d0 [ 1146.176680] ? lo_compat_ioctl+0x130/0x130 [ 1146.180940] ? lo_release+0x19/0x190 [ 1146.184646] lo_release+0x19/0x190 [ 1146.188163] ? lo_compat_ioctl+0x130/0x130 [ 1146.192410] __blkdev_put+0x518/0x6d0 [ 1146.196206] ? bd_set_size+0xb0/0xb0 [ 1146.199900] ? blkdev_put+0x75/0x4c0 [ 1146.203637] ? blkdev_put+0x4c0/0x4c0 [ 1146.207428] blkdev_close+0x86/0xb0 [ 1146.211074] __fput+0x25e/0x700 [ 1146.214348] task_work_run+0x118/0x190 [ 1146.218213] exit_to_usermode_loop+0x13b/0x160 [ 1146.222830] do_syscall_64+0x372/0x4b0 [ 1146.226712] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1146.232134] INFO: task blkid:2947 blocked for more than 140 seconds. [ 1146.238629] Not tainted 4.14.105+ #29 [ 1146.243355] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1146.251335] blkid D28664 2947 310 0x00000004 [ 1146.256943] Call Trace: [ 1146.259508] ? __schedule+0x91c/0x1f30 [ 1146.263434] ? __sched_text_start+0x8/0x8 [ 1146.267676] ? lock_downgrade+0x5d0/0x5d0 [ 1146.271856] ? lock_acquire+0x10f/0x380 [ 1146.275822] ? __mutex_lock+0x2c1/0x1430 [ 1146.279864] schedule+0x92/0x1c0 [ 1146.283258] schedule_preempt_disabled+0x13/0x20 [ 1146.288006] __mutex_lock+0x559/0x1430 [ 1146.291919] ? lo_ioctl+0x83/0x1970 [ 1146.295571] ? avc_has_extended_perms+0x5e0/0xc20 [ 1146.300432] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1146.305875] ? lock_downgrade+0x5d0/0x5d0 [ 1146.310049] ? lock_acquire+0x10f/0x380 [ 1146.314017] ? check_preemption_disabled+0x35/0x1f0 [ 1146.319013] ? avc_has_extended_perms+0x706/0xc20 [ 1146.323896] ? lo_ioctl+0x83/0x1970 [ 1146.327517] lo_ioctl+0x83/0x1970 [ 1146.331002] ? loop_clr_fd+0xac0/0xac0 [ 1146.334889] blkdev_ioctl+0x4d9/0x1810 [ 1146.340895] ? blkpg_ioctl+0x910/0x910 [ 1146.344799] ? __handle_mm_fault+0x182c/0x2640 [ 1146.349357] ? lock_downgrade+0x5d0/0x5d0 [ 1146.353570] block_ioctl+0xd9/0x120 [ 1146.357191] ? blkdev_fallocate+0x3b0/0x3b0 [ 1146.361617] do_vfs_ioctl+0xabe/0x1040 [ 1146.365502] ? selinux_file_ioctl+0x426/0x590 [ 1146.369973] ? selinux_file_ioctl+0x116/0x590 [ 1146.374937] ? ioctl_preallocate+0x1e0/0x1e0 [ 1146.379334] ? selinux_parse_skb.constprop.0+0x16b0/0x16b0 [ 1146.385000] ? __do_page_fault+0x48e/0xb80 [ 1146.389242] ? lock_downgrade+0x5cb/0x5d0 [ 1146.393452] ? security_file_ioctl+0x7c/0xb0 [ 1146.397859] SyS_ioctl+0x7f/0xb0 [ 1146.401287] ? do_vfs_ioctl+0x1040/0x1040 [ 1146.405424] do_syscall_64+0x19b/0x4b0 [ 1146.409292] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1146.414740] INFO: task blkid:2948 blocked for more than 140 seconds. [ 1146.421260] Not tainted 4.14.105+ #29 [ 1146.425558] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1146.433535] blkid D28760 2948 311 0x00000004 [ 1146.439207] Call Trace: [ 1146.441846] ? __schedule+0x91c/0x1f30 [ 1146.445731] ? __sched_text_start+0x8/0x8 [ 1146.449901] ? lock_downgrade+0x5d0/0x5d0 [ 1146.454087] ? lock_acquire+0x10f/0x380 [ 1146.458055] ? __mutex_lock+0x2c1/0x1430 [ 1146.462155] schedule+0x92/0x1c0 [ 1146.465519] schedule_preempt_disabled+0x13/0x20 [ 1146.470297] __mutex_lock+0x559/0x1430 [ 1146.474180] ? lo_ioctl+0x83/0x1970 [ 1146.477792] ? avc_has_extended_perms+0x5e0/0xc20 [ 1146.482651] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1146.488090] ? lock_downgrade+0x5d0/0x5d0 [ 1146.492279] ? lock_acquire+0x10f/0x380 [ 1146.496277] ? check_preemption_disabled+0x35/0x1f0 [ 1146.501743] ? avc_has_extended_perms+0x706/0xc20 [ 1146.506592] ? lo_ioctl+0x83/0x1970 [ 1146.510260] lo_ioctl+0x83/0x1970 [ 1146.513715] ? loop_clr_fd+0xac0/0xac0 [ 1146.517579] blkdev_ioctl+0x4d9/0x1810 [ 1146.521488] ? blkpg_ioctl+0x910/0x910 [ 1146.525368] ? __handle_mm_fault+0x182c/0x2640 [ 1146.529951] ? lock_downgrade+0x5d0/0x5d0 [ 1146.534150] block_ioctl+0xd9/0x120 [ 1146.537778] ? blkdev_fallocate+0x3b0/0x3b0 [ 1146.542143] do_vfs_ioctl+0xabe/0x1040 [ 1146.546024] ? selinux_file_ioctl+0x426/0x590 [ 1146.550537] ? selinux_file_ioctl+0x116/0x590 [ 1146.555027] ? ioctl_preallocate+0x1e0/0x1e0 [ 1146.559422] ? selinux_parse_skb.constprop.0+0x16b0/0x16b0 [ 1146.565088] ? __do_page_fault+0x48e/0xb80 [ 1146.569317] ? lock_downgrade+0x5cb/0x5d0 [ 1146.573529] ? security_file_ioctl+0x7c/0xb0 [ 1146.577938] SyS_ioctl+0x7f/0xb0 [ 1146.581324] ? do_vfs_ioctl+0x1040/0x1040 [ 1146.585467] do_syscall_64+0x19b/0x4b0 [ 1146.589333] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1146.594742] INFO: task blkid:2953 blocked for more than 140 seconds. [ 1146.601660] Not tainted 4.14.105+ #29 [ 1146.605984] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1146.613977] blkid D27816 2953 2930 0x00000004 [ 1146.619603] Call Trace: [ 1146.622220] ? __schedule+0x91c/0x1f30 [ 1146.626107] ? __sched_text_start+0x8/0x8 [ 1146.630751] ? lock_downgrade+0x5d0/0x5d0 [ 1146.634894] ? lock_acquire+0x10f/0x380 [ 1146.638850] ? __mutex_lock+0x2c1/0x1430 [ 1146.642951] schedule+0x92/0x1c0 [ 1146.646325] schedule_preempt_disabled+0x13/0x20 [ 1146.651100] __mutex_lock+0x559/0x1430 [ 1146.654977] ? __mutex_unlock_slowpath+0x9a/0x7d0 [ 1146.659797] ? trace_hardirqs_on+0x10/0x10 [ 1146.664062] ? __blkdev_get+0xf3/0xf90 [ 1146.667944] ? refcount_inc_not_zero+0x81/0xe0 [ 1146.672572] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1146.678027] ? kobject_get_unless_zero+0x27/0x40 [ 1146.682808] ? get_disk+0xd0/0xd0 [ 1146.686251] ? exact_match+0x9/0x20 [ 1146.689871] ? kobj_lookup+0x325/0x410 [ 1146.693834] ? blkdev_ioctl+0x1810/0x1810 [ 1146.697995] ? __blkdev_get+0xf3/0xf90 [ 1146.701906] __blkdev_get+0xf3/0xf90 [ 1146.705726] ? __blkdev_put+0x6d0/0x6d0 [ 1146.709716] ? fsnotify+0x8b0/0x1150 [ 1146.713458] blkdev_get+0x97/0x8b0 [ 1146.716991] ? bd_acquire+0x171/0x2c0 [ 1146.720816] ? bd_may_claim+0xd0/0xd0 [ 1146.724618] ? lock_downgrade+0x5d0/0x5d0 [ 1146.728741] ? lock_acquire+0x10f/0x380 [ 1146.732777] ? bd_acquire+0x21/0x2c0 [ 1146.736490] blkdev_open+0x1cc/0x250 [ 1146.740227] ? security_file_open+0x88/0x190 [ 1146.744648] do_dentry_open+0x41b/0xd60 [ 1146.748738] ? bd_acquire+0x2c0/0x2c0 [ 1146.752585] vfs_open+0x105/0x230 [ 1146.756035] path_openat+0xb6b/0x2b70 [ 1146.759818] ? path_mountpoint+0x9a0/0x9a0 [ 1146.764491] ? trace_hardirqs_on+0x10/0x10 [ 1146.768733] do_filp_open+0x1a1/0x280 [ 1146.772564] ? may_open_dev+0xe0/0xe0 [ 1146.776362] ? lock_downgrade+0x5d0/0x5d0 [ 1146.780527] ? lock_acquire+0x10f/0x380 [ 1146.784493] ? __alloc_fd+0x3f/0x490 [ 1146.788200] ? _raw_spin_unlock+0x29/0x40 [ 1146.792361] ? __alloc_fd+0x1bf/0x490 [ 1146.796154] do_sys_open+0x2ca/0x590 [ 1146.799895] ? filp_open+0x60/0x60 [ 1146.803468] ? do_syscall_64+0x43/0x4b0 [ 1146.807431] ? do_sys_open+0x590/0x590 [ 1146.811349] do_syscall_64+0x19b/0x4b0 [ 1146.815231] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1146.820633] [ 1146.820633] Showing all locks held in the system: [ 1146.826963] 1 lock held by khungtaskd/23: [ 1146.831164] #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a [ 1146.840322] 1 lock held by rsyslogd/1631: [ 1146.844462] #0: (&f->f_pos_lock){+.+.}, at: [] __fdget_pos+0xa6/0xc0 [ 1146.852737] 2 locks held by getty/1759: [ 1146.856717] #0: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref_wait+0x22/0x80 [ 1146.865668] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1f7/0x1700 [ 1146.874981] 1 lock held by syz-executor.2/1967: [ 1146.879628] #0: (loop_ctl_mutex/1){+.+.}, at: [] lo_ioctl+0x83/0x1970 [ 1146.888019] 2 locks held by syz-executor.3/1974: [ 1146.892815] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0xf3/0xf90 [ 1146.901354] #1: (loop_index_mutex){+.+.}, at: [] lo_open+0x19/0xb0 [ 1146.909453] 2 locks held by syz-executor.4/1975: [ 1146.914238] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0xf3/0xf90 [ 1146.923285] #1: (loop_index_mutex){+.+.}, at: [] lo_open+0x19/0xb0 [ 1146.931418] 3 locks held by syz-executor.5/1978: [ 1146.936159] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_put+0xb1/0x6d0 [ 1146.944703] #1: (loop_index_mutex){+.+.}, at: [] lo_release+0x19/0x190 [ 1146.953188] #2: (loop_ctl_mutex#2){+.+.}, at: [] lo_release+0x78/0x190 [ 1146.961710] 2 locks held by syz-executor.0/1981: [ 1146.966522] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0xf3/0xf90 [ 1146.975053] #1: (loop_index_mutex){+.+.}, at: [] lo_open+0x19/0xb0 [ 1146.983160] 2 locks held by syz-executor.1/2945: [ 1146.987901] #0: (loop_ctl_mutex/1){+.+.}, at: [] lo_ioctl+0x83/0x1970 [ 1146.996247] #1: (&bdev->bd_mutex){+.+.}, at: [] blkdev_reread_part+0x1b/0x40 [ 1147.005226] 2 locks held by blkid/2946: [ 1147.009245] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_put+0xb1/0x6d0 [ 1147.017790] #1: (loop_index_mutex){+.+.}, at: [] lo_release+0x19/0x190 [ 1147.026255] 1 lock held by blkid/2947: [ 1147.030179] #0: (loop_ctl_mutex/1){+.+.}, at: [] lo_ioctl+0x83/0x1970 [ 1147.038511] 1 lock held by blkid/2948: [ 1147.042430] #0: (loop_ctl_mutex/1){+.+.}, at: [] lo_ioctl+0x83/0x1970 [ 1147.050796] 1 lock held by blkid/2953: [ 1147.054666] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0xf3/0xf90 [ 1147.063193] 1 lock held by blkid/2954: [ 1147.067068] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0xf3/0xf90 [ 1147.075588] 1 lock held by blkid/2955: [ 1147.079459] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0xf3/0xf90 [ 1147.087972] [ 1147.089590] ============================================= [ 1147.089590] [ 1147.096879] NMI backtrace for cpu 0 [ 1147.100533] CPU: 0 PID: 23 Comm: khungtaskd Not tainted 4.14.105+ #29 [ 1147.107083] Call Trace: [ 1147.109662] dump_stack+0xb9/0x10e [ 1147.113179] ? irq_force_complete_move+0x2c1/0x2e5 [ 1147.118082] nmi_cpu_backtrace.cold+0x47/0x86 [ 1147.122552] ? irq_force_complete_move.cold+0x7b/0x7b [ 1147.127716] ? nmi_trigger_cpumask_backtrace+0x119/0x147 [ 1147.133139] ? watchdog+0x5d3/0xb60 [ 1147.136750] ? reset_hung_task_detector+0x10/0x10 [ 1147.141579] ? kthread+0x310/0x420 [ 1147.145090] ? kthread_create_on_node+0xf0/0xf0 [ 1147.149736] ? ret_from_fork+0x3a/0x50 [ 1147.153696] Sending NMI from CPU 0 to CPUs 1: [ 1147.158230] NMI backtrace for cpu 1 skipped: idling at pc 0xffffffff980430b2 [ 1147.159309] Kernel panic - not syncing: hung_task: blocked tasks [ 1147.171556] CPU: 0 PID: 23 Comm: khungtaskd Not tainted 4.14.105+ #29 [ 1147.178106] Call Trace: [ 1147.180666] dump_stack+0xb9/0x10e [ 1147.184200] panic+0x1d9/0x3c2 [ 1147.187398] ? add_taint.cold+0x16/0x16 [ 1147.191347] ? irq_force_complete_move.cold+0x7b/0x7b [ 1147.196513] ? ___preempt_schedule+0x16/0x18 [ 1147.200905] watchdog+0x5e4/0xb60 [ 1147.204350] ? reset_hung_task_detector+0x10/0x10 [ 1147.209166] kthread+0x310/0x420 [ 1147.212509] ? kthread_create_on_node+0xf0/0xf0 [ 1147.217156] ret_from_fork+0x3a/0x50 [ 1147.221197] Kernel Offset: 0x15800000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 1147.232096] Rebooting in 86400 seconds..