Warning: Permanently added '10.128.10.46' (ECDSA) to the list of known hosts. [ 952.844666] random: sshd: uninitialized urandom read (32 bytes read) [ 952.926976] audit: type=1400 audit(1552198893.883:8): avc: denied { map } for pid=1954 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 2019/03/10 06:21:34 parsed 1 programs [ 953.675677] audit: type=1400 audit(1552198894.633:9): avc: denied { map } for pid=1954 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 [ 954.253106] random: cc1: uninitialized urandom read (8 bytes read) 2019/03/10 06:21:36 executed programs: 0 [ 955.795537] audit: type=1400 audit(1552198896.753:10): avc: denied { map } for pid=1954 comm="syz-execprog" path="/root/syzkaller-shm123699983" 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 [ 1144.800159] INFO: task blkid:2117 blocked for more than 140 seconds. [ 1144.806741] Not tainted 4.14.105+ #29 [ 1144.811240] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1144.819192] blkid D28664 2117 309 0x00000004 [ 1144.824911] Call Trace: [ 1144.827495] ? __schedule+0x91c/0x1f30 [ 1144.831458] ? __sched_text_start+0x8/0x8 [ 1144.835592] ? lock_downgrade+0x5d0/0x5d0 [ 1144.839712] ? lock_acquire+0x10f/0x380 [ 1144.843764] ? __mutex_lock+0x2c1/0x1430 [ 1144.847819] schedule+0x92/0x1c0 [ 1144.851240] schedule_preempt_disabled+0x13/0x20 [ 1144.855991] __mutex_lock+0x559/0x1430 [ 1144.859966] ? trace_hardirqs_on+0x10/0x10 [ 1144.864243] ? lo_release+0x78/0x190 [ 1144.867965] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1144.873458] ? lock_downgrade+0x5d0/0x5d0 [ 1144.877858] ? lock_acquire+0x10f/0x380 [ 1144.881870] ? __blkdev_put+0x1cb/0x6d0 [ 1144.885838] ? lo_compat_ioctl+0x130/0x130 [ 1144.890085] ? lo_release+0x78/0x190 [ 1144.893835] lo_release+0x78/0x190 [ 1144.897363] ? lo_compat_ioctl+0x130/0x130 [ 1144.901632] __blkdev_put+0x518/0x6d0 [ 1144.905429] ? bd_set_size+0xb0/0xb0 [ 1144.909525] ? blkdev_put+0x75/0x4c0 [ 1144.913261] ? blkdev_put+0x4c0/0x4c0 [ 1144.917052] blkdev_close+0x86/0xb0 [ 1144.920718] __fput+0x25e/0x700 [ 1144.923991] task_work_run+0x118/0x190 [ 1144.927868] exit_to_usermode_loop+0x13b/0x160 [ 1144.932900] do_syscall_64+0x372/0x4b0 [ 1144.936851] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1144.942275] INFO: task syz-executor.0:2118 blocked for more than 140 seconds. [ 1144.949581] Not tainted 4.14.105+ #29 [ 1144.953941] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1144.961915] syz-executor.0 D27272 2118 1968 0x00000004 [ 1144.967522] Call Trace: [ 1144.970127] ? __schedule+0x91c/0x1f30 [ 1144.974044] ? __sched_text_start+0x8/0x8 [ 1144.978170] ? lock_downgrade+0x5d0/0x5d0 [ 1144.982332] ? lock_acquire+0x10f/0x380 [ 1144.986293] ? __mutex_lock+0x2c1/0x1430 [ 1144.990366] schedule+0x92/0x1c0 [ 1144.993717] schedule_preempt_disabled+0x13/0x20 [ 1144.998444] __mutex_lock+0x559/0x1430 [ 1145.002351] ? blkdev_reread_part+0x1b/0x40 [ 1145.006659] ? mark_lock+0xfa0/0xfa0 [ 1145.010384] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1145.015821] ? _raw_spin_unlock_irqrestore+0x41/0x70 [ 1145.020943] ? __wake_up_common_lock+0xe0/0x170 [ 1145.025608] ? blkdev_reread_part+0x1b/0x40 [ 1145.029907] blkdev_reread_part+0x1b/0x40 [ 1145.034073] loop_reread_partitions+0x72/0x80 [ 1145.038555] loop_set_status+0xbff/0x11f0 [ 1145.042726] ? loop_set_status64+0xa5/0x100 [ 1145.047044] ? loop_set_status_old+0x2f0/0x2f0 [ 1145.051640] ? lo_ioctl+0x83/0x1970 [ 1145.055268] ? lo_ioctl+0x50b/0x1970 [ 1145.058968] ? __lock_acquire+0x56a/0x3fa0 [ 1145.063616] ? loop_clr_fd+0xac0/0xac0 [ 1145.067488] ? blkdev_ioctl+0x4d9/0x1810 [ 1145.071562] ? blkpg_ioctl+0x910/0x910 [ 1145.075434] ? trace_hardirqs_on+0x10/0x10 [ 1145.079649] ? exit_robust_list+0x210/0x210 [ 1145.083996] ? block_ioctl+0xd9/0x120 [ 1145.087777] ? blkdev_fallocate+0x3b0/0x3b0 [ 1145.092109] ? do_vfs_ioctl+0xabe/0x1040 [ 1145.096157] ? selinux_file_ioctl+0x426/0x590 [ 1145.100657] ? selinux_file_ioctl+0x116/0x590 [ 1145.105136] ? ioctl_preallocate+0x1e0/0x1e0 [ 1145.109518] ? selinux_parse_skb.constprop.0+0x16b0/0x16b0 [ 1145.115148] ? __might_fault+0x177/0x1b0 [ 1145.119203] ? _copy_to_user+0x82/0xd0 [ 1145.123172] ? nsecs_to_jiffies+0x30/0x30 [ 1145.127313] ? security_file_ioctl+0x7c/0xb0 [ 1145.131743] ? SyS_ioctl+0x7f/0xb0 [ 1145.135270] ? do_vfs_ioctl+0x1040/0x1040 [ 1145.139397] ? do_syscall_64+0x19b/0x4b0 [ 1145.143477] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.148835] INFO: task blkid:2120 blocked for more than 140 seconds. [ 1145.155333] Not tainted 4.14.105+ #29 [ 1145.159634] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.167607] blkid D28936 2120 310 0x00000004 [ 1145.173243] Call Trace: [ 1145.175812] ? __schedule+0x91c/0x1f30 [ 1145.179678] ? __sched_text_start+0x8/0x8 [ 1145.183850] ? lock_downgrade+0x5d0/0x5d0 [ 1145.187985] ? lock_acquire+0x10f/0x380 [ 1145.192352] ? __mutex_lock+0x2c1/0x1430 [ 1145.196482] schedule+0x92/0x1c0 [ 1145.199823] schedule_preempt_disabled+0x13/0x20 [ 1145.204586] __mutex_lock+0x559/0x1430 [ 1145.208461] ? __mutex_lock+0x6aa/0x1430 [ 1145.212530] ? __mutex_unlock_slowpath+0x9a/0x7d0 [ 1145.217358] ? lo_open+0x19/0xb0 [ 1145.220748] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1145.226247] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1145.231760] ? kobject_get_unless_zero+0x27/0x40 [ 1145.236561] ? get_disk+0xd0/0xd0 [ 1145.240066] ? exact_match+0x9/0x20 [ 1145.243686] ? blkdev_ioctl+0x1810/0x1810 [ 1145.247815] ? loop_unregister_transfer+0x90/0x90 [ 1145.253231] ? lo_open+0x19/0xb0 [ 1145.256582] lo_open+0x19/0xb0 [ 1145.259755] __blkdev_get+0x963/0xf90 [ 1145.263574] ? __blkdev_put+0x6d0/0x6d0 [ 1145.267535] ? fsnotify+0x8b0/0x1150 [ 1145.271262] blkdev_get+0x97/0x8b0 [ 1145.274790] ? bd_acquire+0x171/0x2c0 [ 1145.278567] ? bd_may_claim+0xd0/0xd0 [ 1145.282475] ? lock_downgrade+0x5d0/0x5d0 [ 1145.286616] ? lock_acquire+0x10f/0x380 [ 1145.290606] ? bd_acquire+0x21/0x2c0 [ 1145.294318] blkdev_open+0x1cc/0x250 [ 1145.298012] ? security_file_open+0x88/0x190 [ 1145.302458] do_dentry_open+0x41b/0xd60 [ 1145.306432] ? bd_acquire+0x2c0/0x2c0 [ 1145.310276] vfs_open+0x105/0x230 [ 1145.313718] path_openat+0xb6b/0x2b70 [ 1145.317504] ? path_mountpoint+0x9a0/0x9a0 [ 1145.322144] ? trace_hardirqs_on+0x10/0x10 [ 1145.326422] do_filp_open+0x1a1/0x280 [ 1145.330260] ? may_open_dev+0xe0/0xe0 [ 1145.334069] ? lock_downgrade+0x5d0/0x5d0 [ 1145.338241] ? lock_acquire+0x10f/0x380 [ 1145.342302] ? __alloc_fd+0x3f/0x490 [ 1145.346009] ? _raw_spin_unlock+0x29/0x40 [ 1145.350171] ? __alloc_fd+0x1bf/0x490 [ 1145.353963] do_sys_open+0x2ca/0x590 [ 1145.357655] ? filp_open+0x60/0x60 [ 1145.361225] ? do_syscall_64+0x43/0x4b0 [ 1145.365184] ? do_sys_open+0x590/0x590 [ 1145.369051] do_syscall_64+0x19b/0x4b0 [ 1145.372962] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.378319] [ 1145.378319] Showing all locks held in the system: [ 1145.384656] 1 lock held by khungtaskd/23: [ 1145.388871] #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a [ 1145.397941] 2 locks held by getty/1762: [ 1145.401913] #0: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref_wait+0x22/0x80 [ 1145.410867] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1f7/0x1700 [ 1145.420168] 3 locks held by blkid/2117: [ 1145.424116] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_put+0xb1/0x6d0 [ 1145.432629] #1: (loop_index_mutex){+.+.}, at: [] lo_release+0x19/0x190 [ 1145.441060] #2: (loop_ctl_mutex#2){+.+.}, at: [] lo_release+0x78/0x190 [ 1145.449451] 2 locks held by syz-executor.0/2118: [ 1145.454232] #0: (loop_ctl_mutex/1){+.+.}, at: [] lo_ioctl+0x83/0x1970 [ 1145.462575] #1: (&bdev->bd_mutex){+.+.}, at: [] blkdev_reread_part+0x1b/0x40 [ 1145.471528] 2 locks held by blkid/2120: [ 1145.475483] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0xf3/0xf90 [ 1145.483992] #1: (loop_index_mutex){+.+.}, at: [] lo_open+0x19/0xb0 [ 1145.492071] [ 1145.493680] ============================================= [ 1145.493680] [ 1145.500902] NMI backtrace for cpu 1 [ 1145.504526] CPU: 1 PID: 23 Comm: khungtaskd Not tainted 4.14.105+ #29 [ 1145.511075] Call Trace: [ 1145.513640] dump_stack+0xb9/0x10e [ 1145.517159] ? irq_force_complete_move+0x2c1/0x2e5 [ 1145.522062] nmi_cpu_backtrace.cold+0x47/0x86 [ 1145.526530] ? irq_force_complete_move.cold+0x7b/0x7b [ 1145.531694] ? nmi_trigger_cpumask_backtrace+0x119/0x147 [ 1145.537116] ? watchdog+0x5d3/0xb60 [ 1145.540717] ? reset_hung_task_detector+0x10/0x10 [ 1145.545532] ? kthread+0x310/0x420 [ 1145.549042] ? kthread_create_on_node+0xf0/0xf0 [ 1145.553684] ? ret_from_fork+0x3a/0x50 [ 1145.557606] Sending NMI from CPU 1 to CPUs 0: [ 1145.562147] NMI backtrace for cpu 0 skipped: idling at pc 0xffffffffb86430b2 [ 1145.563121] Kernel panic - not syncing: hung_task: blocked tasks [ 1145.575452] CPU: 1 PID: 23 Comm: khungtaskd Not tainted 4.14.105+ #29 [ 1145.582001] Call Trace: [ 1145.584566] dump_stack+0xb9/0x10e [ 1145.588084] panic+0x1d9/0x3c2 [ 1145.591252] ? add_taint.cold+0x16/0x16 [ 1145.595199] ? irq_force_complete_move.cold+0x7b/0x7b [ 1145.600363] ? ___preempt_schedule+0x16/0x18 [ 1145.604748] watchdog+0x5e4/0xb60 [ 1145.608180] ? reset_hung_task_detector+0x10/0x10 [ 1145.612999] kthread+0x310/0x420 [ 1145.616342] ? kthread_create_on_node+0xf0/0xf0 [ 1145.620985] ret_from_fork+0x3a/0x50 [ 1145.625199] Kernel Offset: 0x35e00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 1145.636098] Rebooting in 86400 seconds..