INIT: Id "4" 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 "5" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes [ 951.076126] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.231' (ECDSA) to the list of known hosts. [ 956.586856] random: sshd: uninitialized urandom read (32 bytes read) [ 956.693062] audit: type=1400 audit(1556514744.461:7): avc: denied { map } for pid=1944 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 2019/04/29 05:12:25 parsed 1 programs [ 957.689097] audit: type=1400 audit(1556514745.451:8): avc: denied { map } for pid=1944 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=5016 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 [ 958.254964] random: cc1: uninitialized urandom read (8 bytes read) 2019/04/29 05:12:27 executed programs: 0 [ 959.896863] audit: type=1400 audit(1556514747.661:9): avc: denied { map } for pid=1944 comm="syz-execprog" path="/root/syzkaller-shm286186868" 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 [ 1144.790250] INFO: task syz-executor.3:1964 blocked for more than 140 seconds. [ 1144.797882] Not tainted 4.14.113+ #61 [ 1144.802531] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1144.810639] syz-executor.3 D25640 1964 1 0x00000004 [ 1144.816315] Call Trace: [ 1144.818981] ? __schedule+0x91c/0x1f30 [ 1144.823098] ? __sched_text_start+0x8/0x8 [ 1144.827271] ? lock_downgrade+0x5d0/0x5d0 [ 1144.831562] ? lock_acquire+0x10f/0x380 [ 1144.835537] ? __mutex_lock+0x2c1/0x1430 [ 1144.839590] schedule+0x92/0x1c0 [ 1144.843078] schedule_preempt_disabled+0x13/0x20 [ 1144.847853] __mutex_lock+0x559/0x1430 [ 1144.851818] ? do_syscall_64+0x19a/0x4b0 [ 1144.855902] ? lo_ioctl+0x83/0x1970 [ 1144.859527] ? avc_has_extended_perms+0x5e0/0xc20 [ 1144.864420] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1144.869920] ? lock_downgrade+0x5d0/0x5d0 [ 1144.874156] ? lock_acquire+0x10f/0x380 [ 1144.878149] ? check_preemption_disabled+0x35/0x1f0 [ 1144.883203] ? avc_has_extended_perms+0x706/0xc20 [ 1144.888048] ? lo_ioctl+0x83/0x1970 [ 1144.891731] lo_ioctl+0x83/0x1970 [ 1144.895205] ? kasan_slab_free+0xb0/0x190 [ 1144.899339] ? kmem_cache_free+0xc4/0x330 [ 1144.903550] ? putname+0xcd/0x110 [ 1144.907008] ? do_sys_open+0x250/0x590 [ 1144.910948] ? do_syscall_64+0x19b/0x4b0 [ 1144.915014] ? loop_clr_fd+0xac0/0xac0 [ 1144.918935] blkdev_ioctl+0x4d9/0x1810 [ 1144.922966] ? blkpg_ioctl+0x910/0x910 [ 1144.926857] ? lock_downgrade+0x5d0/0x5d0 [ 1144.931049] ? lock_acquire+0x10f/0x380 [ 1144.935022] ? debug_check_no_obj_freed+0x148/0x5c0 [ 1144.940092] ? _raw_spin_unlock_irqrestore+0x54/0x70 [ 1144.945455] ? trace_hardirqs_on_caller+0x37b/0x540 [ 1144.950550] block_ioctl+0xd9/0x120 [ 1144.954218] ? blkdev_fallocate+0x3b0/0x3b0 [ 1144.958533] do_vfs_ioctl+0xabe/0x1040 [ 1144.962483] ? selinux_file_ioctl+0x426/0x590 [ 1144.966980] ? selinux_file_ioctl+0x116/0x590 [ 1144.971637] ? ioctl_preallocate+0x1e0/0x1e0 [ 1144.976181] ? selinux_parse_skb.constprop.0+0x16b0/0x16b0 [ 1144.981917] ? rcu_read_lock_sched_held+0x10a/0x130 [ 1144.986941] ? putname+0xcd/0x110 [ 1144.990436] ? do_sys_open+0x255/0x590 [ 1144.994328] ? filp_open+0x60/0x60 [ 1144.997882] ? security_file_ioctl+0x7c/0xb0 [ 1145.002351] SyS_ioctl+0x7f/0xb0 [ 1145.005792] ? do_vfs_ioctl+0x1040/0x1040 [ 1145.009937] do_syscall_64+0x19b/0x4b0 [ 1145.014011] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.019386] INFO: task syz-executor.4:1968 blocked for more than 140 seconds. [ 1145.026711] Not tainted 4.14.113+ #61 [ 1145.031070] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.039024] syz-executor.4 D25640 1968 1 0x00000004 [ 1145.044724] Call Trace: [ 1145.047321] ? __schedule+0x91c/0x1f30 [ 1145.051303] ? __sched_text_start+0x8/0x8 [ 1145.055500] ? lock_downgrade+0x5d0/0x5d0 [ 1145.059674] ? lock_acquire+0x10f/0x380 [ 1145.063853] ? __mutex_lock+0x2c1/0x1430 [ 1145.067961] schedule+0x92/0x1c0 [ 1145.071371] schedule_preempt_disabled+0x13/0x20 [ 1145.076141] __mutex_lock+0x559/0x1430 [ 1145.080163] ? trace_hardirqs_on+0x10/0x10 [ 1145.084449] ? lo_release+0x78/0x190 [ 1145.088166] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1145.093673] ? lock_downgrade+0x5d0/0x5d0 [ 1145.097942] ? lock_acquire+0x10f/0x380 [ 1145.101955] ? __blkdev_put+0x1cb/0x6d0 [ 1145.105929] ? lo_compat_ioctl+0x130/0x130 [ 1145.110276] ? lo_release+0x78/0x190 [ 1145.113989] lo_release+0x78/0x190 [ 1145.117515] ? lo_compat_ioctl+0x130/0x130 [ 1145.121809] __blkdev_put+0x518/0x6d0 [ 1145.125981] ? bd_set_size+0xb0/0xb0 [ 1145.129736] ? blkdev_put+0x75/0x4c0 [ 1145.133520] ? blkdev_put+0x4c0/0x4c0 [ 1145.137319] blkdev_close+0x86/0xb0 [ 1145.140972] __fput+0x25e/0x700 [ 1145.144424] task_work_run+0x118/0x190 [ 1145.148308] exit_to_usermode_loop+0x13b/0x160 [ 1145.152945] do_syscall_64+0x372/0x4b0 [ 1145.156856] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.162322] INFO: task syz-executor.5:1970 blocked for more than 140 seconds. [ 1145.169766] Not tainted 4.14.113+ #61 [ 1145.174189] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.182186] syz-executor.5 D25144 1970 1 0x00000004 [ 1145.187827] Call Trace: [ 1145.190532] ? __schedule+0x91c/0x1f30 [ 1145.194432] ? __sched_text_start+0x8/0x8 [ 1145.198569] ? lock_downgrade+0x5d0/0x5d0 [ 1145.202805] ? lock_acquire+0x10f/0x380 [ 1145.206783] ? __mutex_lock+0x2c1/0x1430 [ 1145.210902] schedule+0x92/0x1c0 [ 1145.214276] schedule_preempt_disabled+0x13/0x20 [ 1145.219022] __mutex_lock+0x559/0x1430 [ 1145.222979] ? do_syscall_64+0x19a/0x4b0 [ 1145.227072] ? lo_ioctl+0x83/0x1970 [ 1145.230790] ? avc_has_extended_perms+0x5e0/0xc20 [ 1145.235627] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1145.241234] ? lock_downgrade+0x5d0/0x5d0 [ 1145.245533] ? lock_acquire+0x10f/0x380 [ 1145.249501] ? check_preemption_disabled+0x35/0x1f0 [ 1145.254588] ? avc_has_extended_perms+0x706/0xc20 [ 1145.259432] ? lo_ioctl+0x83/0x1970 [ 1145.263123] lo_ioctl+0x83/0x1970 [ 1145.266576] ? kasan_slab_free+0xb0/0x190 [ 1145.270773] ? kmem_cache_free+0xc4/0x330 [ 1145.274913] ? putname+0xcd/0x110 [ 1145.278347] ? do_sys_open+0x250/0x590 [ 1145.282262] ? do_syscall_64+0x19b/0x4b0 [ 1145.286413] ? loop_clr_fd+0xac0/0xac0 [ 1145.290470] blkdev_ioctl+0x4d9/0x1810 [ 1145.294347] ? blkpg_ioctl+0x910/0x910 [ 1145.298219] ? lock_downgrade+0x5d0/0x5d0 [ 1145.302462] ? lock_acquire+0x10f/0x380 [ 1145.306430] ? debug_check_no_obj_freed+0x148/0x5c0 [ 1145.311631] ? _raw_spin_unlock_irqrestore+0x54/0x70 [ 1145.316854] ? trace_hardirqs_on_caller+0x37b/0x540 [ 1145.322016] block_ioctl+0xd9/0x120 [ 1145.325628] ? blkdev_fallocate+0x3b0/0x3b0 [ 1145.329930] do_vfs_ioctl+0xabe/0x1040 [ 1145.333861] ? selinux_file_ioctl+0x426/0x590 [ 1145.338595] ? selinux_file_ioctl+0x116/0x590 [ 1145.343129] ? ioctl_preallocate+0x1e0/0x1e0 [ 1145.347763] ? selinux_parse_skb.constprop.0+0x16b0/0x16b0 [ 1145.353433] ? rcu_read_lock_sched_held+0x10a/0x130 [ 1145.358496] ? putname+0xcd/0x110 [ 1145.361993] ? do_sys_open+0x255/0x590 [ 1145.365880] ? filp_open+0x60/0x60 [ 1145.369564] ? security_file_ioctl+0x7c/0xb0 [ 1145.374022] SyS_ioctl+0x7f/0xb0 [ 1145.377382] ? do_vfs_ioctl+0x1040/0x1040 [ 1145.381637] do_syscall_64+0x19b/0x4b0 [ 1145.385528] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.392792] INFO: task syz-executor.0:1973 blocked for more than 140 seconds. [ 1145.400096] Not tainted 4.14.113+ #61 [ 1145.404443] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.412463] syz-executor.0 D25640 1973 1 0x00000004 [ 1145.418357] Call Trace: [ 1145.421153] ? __schedule+0x91c/0x1f30 [ 1145.425037] ? __sched_text_start+0x8/0x8 [ 1145.429192] ? lock_downgrade+0x5d0/0x5d0 [ 1145.433406] ? lock_acquire+0x10f/0x380 [ 1145.437375] ? __mutex_lock+0x2c1/0x1430 [ 1145.441584] schedule+0x92/0x1c0 [ 1145.445167] schedule_preempt_disabled+0x13/0x20 [ 1145.449918] __mutex_lock+0x559/0x1430 [ 1145.453867] ? do_syscall_64+0x19a/0x4b0 [ 1145.457922] ? lo_ioctl+0x83/0x1970 [ 1145.461824] ? avc_has_extended_perms+0x5e0/0xc20 [ 1145.466751] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1145.472265] ? lock_downgrade+0x5d0/0x5d0 [ 1145.476415] ? lock_acquire+0x10f/0x380 [ 1145.481582] ? check_preemption_disabled+0x35/0x1f0 [ 1145.486822] ? avc_has_extended_perms+0x706/0xc20 [ 1145.491734] ? lo_ioctl+0x83/0x1970 [ 1145.495369] lo_ioctl+0x83/0x1970 [ 1145.498820] ? kasan_slab_free+0xb0/0x190 [ 1145.503062] ? kmem_cache_free+0xc4/0x330 [ 1145.507221] ? putname+0xcd/0x110 [ 1145.510777] ? do_sys_open+0x250/0x590 [ 1145.514675] ? do_syscall_64+0x19b/0x4b0 [ 1145.518769] ? loop_clr_fd+0xac0/0xac0 [ 1145.522985] blkdev_ioctl+0x4d9/0x1810 [ 1145.526886] ? blkpg_ioctl+0x910/0x910 [ 1145.530848] ? lock_downgrade+0x5d0/0x5d0 [ 1145.535004] ? lock_acquire+0x10f/0x380 [ 1145.538967] ? debug_check_no_obj_freed+0x148/0x5c0 [ 1145.544078] ? _raw_spin_unlock_irqrestore+0x54/0x70 [ 1145.549189] ? trace_hardirqs_on_caller+0x37b/0x540 [ 1145.554277] block_ioctl+0xd9/0x120 [ 1145.557905] ? blkdev_fallocate+0x3b0/0x3b0 [ 1145.562264] do_vfs_ioctl+0xabe/0x1040 [ 1145.566154] ? selinux_file_ioctl+0x426/0x590 [ 1145.570705] ? selinux_file_ioctl+0x116/0x590 [ 1145.575246] ? ioctl_preallocate+0x1e0/0x1e0 [ 1145.579881] ? selinux_parse_skb.constprop.0+0x16b0/0x16b0 [ 1145.585595] ? rcu_read_lock_sched_held+0x10a/0x130 [ 1145.591154] ? putname+0xcd/0x110 [ 1145.594601] ? do_sys_open+0x255/0x590 [ 1145.598478] ? filp_open+0x60/0x60 [ 1145.602071] ? security_file_ioctl+0x7c/0xb0 [ 1145.606482] SyS_ioctl+0x7f/0xb0 [ 1145.609931] ? do_vfs_ioctl+0x1040/0x1040 [ 1145.614164] do_syscall_64+0x19b/0x4b0 [ 1145.618158] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.623596] INFO: task syz-executor.1:1975 blocked for more than 140 seconds. [ 1145.630913] Not tainted 4.14.113+ #61 [ 1145.635215] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.643240] syz-executor.1 D25160 1975 1 0x00000004 [ 1145.649136] Call Trace: [ 1145.651824] ? __schedule+0x91c/0x1f30 [ 1145.655726] ? __sched_text_start+0x8/0x8 [ 1145.659866] ? lock_downgrade+0x5d0/0x5d0 [ 1145.664064] ? lock_acquire+0x10f/0x380 [ 1145.668039] ? __mutex_lock+0x2c1/0x1430 [ 1145.672229] schedule+0x92/0x1c0 [ 1145.675648] schedule_preempt_disabled+0x13/0x20 [ 1145.680463] __mutex_lock+0x559/0x1430 [ 1145.684794] ? do_syscall_64+0x19a/0x4b0 [ 1145.688939] ? lo_ioctl+0x83/0x1970 [ 1145.692657] ? avc_has_extended_perms+0x5e0/0xc20 [ 1145.697522] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1145.703030] ? lock_downgrade+0x5d0/0x5d0 [ 1145.707174] ? lock_acquire+0x10f/0x380 [ 1145.711183] ? check_preemption_disabled+0x35/0x1f0 [ 1145.716269] ? avc_has_extended_perms+0x706/0xc20 [ 1145.721196] ? lo_ioctl+0x83/0x1970 [ 1145.724828] lo_ioctl+0x83/0x1970 [ 1145.728268] ? kasan_slab_free+0xb0/0x190 [ 1145.732514] ? kmem_cache_free+0xc4/0x330 [ 1145.736666] ? putname+0xcd/0x110 [ 1145.740162] ? do_sys_open+0x250/0x590 [ 1145.744051] ? do_syscall_64+0x19b/0x4b0 [ 1145.748211] ? loop_clr_fd+0xac0/0xac0 [ 1145.752219] blkdev_ioctl+0x4d9/0x1810 [ 1145.756633] ? blkpg_ioctl+0x910/0x910 [ 1145.760568] ? lock_downgrade+0x5d0/0x5d0 [ 1145.764721] ? lock_acquire+0x10f/0x380 [ 1145.768686] ? debug_check_no_obj_freed+0x148/0x5c0 [ 1145.773819] ? _raw_spin_unlock_irqrestore+0x54/0x70 [ 1145.778998] ? trace_hardirqs_on_caller+0x37b/0x540 [ 1145.784078] block_ioctl+0xd9/0x120 [ 1145.787717] ? blkdev_fallocate+0x3b0/0x3b0 [ 1145.792151] do_vfs_ioctl+0xabe/0x1040 [ 1145.796051] ? selinux_file_ioctl+0x426/0x590 [ 1145.800658] ? selinux_file_ioctl+0x116/0x590 [ 1145.805276] ? ioctl_preallocate+0x1e0/0x1e0 [ 1145.809674] ? selinux_parse_skb.constprop.0+0x16b0/0x16b0 [ 1145.815361] ? rcu_read_lock_sched_held+0x10a/0x130 [ 1145.820420] ? putname+0xcd/0x110 [ 1145.823864] ? do_sys_open+0x255/0x590 [ 1145.827734] ? filp_open+0x60/0x60 [ 1145.831589] ? security_file_ioctl+0x7c/0xb0 [ 1145.836011] SyS_ioctl+0x7f/0xb0 [ 1145.839370] ? do_vfs_ioctl+0x1040/0x1040 [ 1145.843578] do_syscall_64+0x19b/0x4b0 [ 1145.847477] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.852916] INFO: task blkid:3006 blocked for more than 140 seconds. [ 1145.859471] Not tainted 4.14.113+ #61 [ 1145.863935] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.872122] blkid D29048 3006 293 0x00000004 [ 1145.877892] Call Trace: [ 1145.880560] ? __schedule+0x91c/0x1f30 [ 1145.884513] ? __sched_text_start+0x8/0x8 [ 1145.888659] ? lock_downgrade+0x5d0/0x5d0 [ 1145.892891] ? lock_acquire+0x10f/0x380 [ 1145.896877] ? __mutex_lock+0x2c1/0x1430 [ 1145.900989] schedule+0x92/0x1c0 [ 1145.904473] schedule_preempt_disabled+0x13/0x20 [ 1145.909912] __mutex_lock+0x559/0x1430 [ 1145.913934] ? lo_ioctl+0x83/0x1970 [ 1145.917569] ? avc_has_extended_perms+0x5e0/0xc20 [ 1145.922469] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1145.927921] ? lock_downgrade+0x5d0/0x5d0 [ 1145.932098] ? lock_acquire+0x10f/0x380 [ 1145.936116] ? check_preemption_disabled+0x35/0x1f0 [ 1145.941257] ? avc_has_extended_perms+0x706/0xc20 [ 1145.946128] ? lo_ioctl+0x83/0x1970 [ 1145.949752] lo_ioctl+0x83/0x1970 [ 1145.953278] ? loop_clr_fd+0xac0/0xac0 [ 1145.957155] blkdev_ioctl+0x4d9/0x1810 [ 1145.961060] ? blkpg_ioctl+0x910/0x910 [ 1145.965058] ? __handle_mm_fault+0x182c/0x2640 [ 1145.969623] ? lock_downgrade+0x5d0/0x5d0 [ 1145.973839] block_ioctl+0xd9/0x120 [ 1145.977454] ? blkdev_fallocate+0x3b0/0x3b0 [ 1145.981801] do_vfs_ioctl+0xabe/0x1040 [ 1145.985817] ? selinux_file_ioctl+0x426/0x590 [ 1145.990359] ? selinux_file_ioctl+0x116/0x590 [ 1145.994844] ? ioctl_preallocate+0x1e0/0x1e0 [ 1145.999245] ? selinux_parse_skb.constprop.0+0x16b0/0x16b0 [ 1146.004984] ? __do_page_fault+0x48e/0xb80 [ 1146.009212] ? lock_downgrade+0x5cb/0x5d0 [ 1146.013554] ? security_file_ioctl+0x7c/0xb0 [ 1146.017960] SyS_ioctl+0x7f/0xb0 [ 1146.021377] ? do_vfs_ioctl+0x1040/0x1040 [ 1146.025519] do_syscall_64+0x19b/0x4b0 [ 1146.029392] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1146.034809] INFO: task blkid:3008 blocked for more than 140 seconds. [ 1146.041320] Not tainted 4.14.113+ #61 [ 1146.045619] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1146.053629] blkid D27800 3008 2926 0x00000004 [ 1146.059249] Call Trace: [ 1146.061863] ? __schedule+0x91c/0x1f30 [ 1146.065823] ? __sched_text_start+0x8/0x8 [ 1146.070182] ? lock_downgrade+0x5d0/0x5d0 [ 1146.074325] ? lock_acquire+0x10f/0x380 [ 1146.078289] ? __mutex_lock+0x64b/0x1430 [ 1146.082418] schedule+0x92/0x1c0 [ 1146.085788] schedule_preempt_disabled+0x13/0x20 [ 1146.090599] __mutex_lock+0x559/0x1430 [ 1146.094474] ? lo_ioctl+0x83/0x1970 [ 1146.098083] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1146.103750] ? lock_downgrade+0x5d0/0x5d0 [ 1146.107883] ? lock_acquire+0x10f/0x380 [ 1146.111900] ? check_preemption_disabled+0x35/0x1f0 [ 1146.116908] ? avc_has_extended_perms+0x706/0xc20 [ 1146.121776] ? lo_ioctl+0x83/0x1970 [ 1146.125385] lo_ioctl+0x83/0x1970 [ 1146.128819] ? loop_clr_fd+0xac0/0xac0 [ 1146.132794] blkdev_ioctl+0x4d9/0x1810 [ 1146.136682] ? blkpg_ioctl+0x910/0x910 [ 1146.140614] ? __handle_mm_fault+0x182c/0x2640 [ 1146.145184] ? lock_downgrade+0x5d0/0x5d0 [ 1146.149320] block_ioctl+0xd9/0x120 [ 1146.153074] ? blkdev_fallocate+0x3b0/0x3b0 [ 1146.157399] do_vfs_ioctl+0xabe/0x1040 [ 1146.161429] ? selinux_file_ioctl+0x426/0x590 [ 1146.166065] ? selinux_file_ioctl+0x116/0x590 [ 1146.170641] ? ioctl_preallocate+0x1e0/0x1e0 [ 1146.175055] ? selinux_parse_skb.constprop.0+0x16b0/0x16b0 [ 1146.180767] ? __do_page_fault+0x48e/0xb80 [ 1146.185011] ? lock_downgrade+0x5cb/0x5d0 [ 1146.189243] ? security_file_ioctl+0x7c/0xb0 [ 1146.193730] SyS_ioctl+0x7f/0xb0 [ 1146.197139] ? do_vfs_ioctl+0x1040/0x1040 [ 1146.201335] do_syscall_64+0x19b/0x4b0 [ 1146.205226] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1146.210650] INFO: task syz-executor.2:3009 blocked for more than 140 seconds. [ 1146.217974] Not tainted 4.14.113+ #61 [ 1146.222334] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1146.230352] syz-executor.2 D28648 3009 1961 0x00000004 [ 1146.235990] Call Trace: [ 1146.238568] ? __schedule+0x91c/0x1f30 [ 1146.242506] ? __sched_text_start+0x8/0x8 [ 1146.246652] ? lock_downgrade+0x5d0/0x5d0 [ 1146.250971] ? lock_acquire+0x10f/0x380 [ 1146.254946] ? __mutex_lock+0x2c1/0x1430 [ 1146.258995] schedule+0x92/0x1c0 [ 1146.262420] schedule_preempt_disabled+0x13/0x20 [ 1146.267181] __mutex_lock+0x559/0x1430 [ 1146.271149] ? blkdev_reread_part+0x1b/0x40 [ 1146.275468] ? mark_held_locks+0x70/0xf0 [ 1146.279524] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1146.285045] ? _raw_spin_unlock_irqrestore+0x41/0x70 [ 1146.290169] ? __wake_up_common_lock+0xe0/0x170 [ 1146.294846] ? blkdev_reread_part+0x1b/0x40 [ 1146.299153] blkdev_reread_part+0x1b/0x40 [ 1146.303360] loop_reread_partitions+0x72/0x80 [ 1146.307861] loop_set_status+0xbff/0x11f0 [ 1146.312097] ? loop_set_status64+0xa5/0x100 [ 1146.316407] ? loop_set_status_old+0x2f0/0x2f0 [ 1146.321007] ? lo_ioctl+0x83/0x1970 [ 1146.325037] ? lo_ioctl+0x50b/0x1970 [ 1146.328969] ? __lock_acquire+0x56a/0x3fa0 [ 1146.333457] ? loop_clr_fd+0xac0/0xac0 [ 1146.337478] ? blkdev_ioctl+0x4d9/0x1810 [ 1146.341839] ? blkpg_ioctl+0x910/0x910 [ 1146.345805] ? trace_hardirqs_on+0x10/0x10 [ 1146.350096] ? kasan_slab_free+0x11a/0x190 [ 1146.354333] ? kasan_slab_free+0xb0/0x190 [ 1146.358469] ? kfree+0xf5/0x310 [ 1146.361823] ? exit_robust_list+0x240/0x240 [ 1146.366160] ? block_ioctl+0xd9/0x120 [ 1146.369951] ? blkdev_fallocate+0x3b0/0x3b0 [ 1146.374326] ? do_vfs_ioctl+0xabe/0x1040 [ 1146.378438] ? selinux_file_ioctl+0x426/0x590 [ 1146.383102] ? selinux_file_ioctl+0x116/0x590 [ 1146.387670] ? ioctl_preallocate+0x1e0/0x1e0 [ 1146.392117] ? selinux_parse_skb.constprop.0+0x16b0/0x16b0 [ 1146.397743] ? __might_fault+0x177/0x1b0 [ 1146.401955] ? _copy_to_user+0x82/0xd0 [ 1146.405906] ? nsecs_to_jiffies+0x30/0x30 [ 1146.410125] ? security_file_ioctl+0x7c/0xb0 [ 1146.414541] ? SyS_ioctl+0x7f/0xb0 [ 1146.418058] ? do_vfs_ioctl+0x1040/0x1040 [ 1146.422628] ? do_syscall_64+0x19b/0x4b0 [ 1146.426702] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1146.432311] INFO: task blkid:3010 blocked for more than 140 seconds. [ 1146.444882] Not tainted 4.14.113+ #61 [ 1146.449333] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1146.457360] blkid D27800 3010 2862 0x00000004 [ 1146.463018] Call Trace: [ 1146.465612] ? __schedule+0x91c/0x1f30 [ 1146.469493] ? __sched_text_start+0x8/0x8 [ 1146.473722] ? lock_downgrade+0x5d0/0x5d0 [ 1146.477976] ? lock_acquire+0x10f/0x380 [ 1146.482005] ? __mutex_lock+0x2c1/0x1430 [ 1146.486075] schedule+0x92/0x1c0 [ 1146.489430] schedule_preempt_disabled+0x13/0x20 [ 1146.494387] __mutex_lock+0x559/0x1430 [ 1146.498267] ? lo_ioctl+0x83/0x1970 [ 1146.502039] ? avc_has_extended_perms+0x5e0/0xc20 [ 1146.506867] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1146.512541] ? lock_downgrade+0x5d0/0x5d0 [ 1146.516749] ? lock_acquire+0x10f/0x380 [ 1146.520782] ? check_preemption_disabled+0x35/0x1f0 [ 1146.525796] ? avc_has_extended_perms+0x706/0xc20 [ 1146.530709] ? lo_ioctl+0x83/0x1970 [ 1146.534338] lo_ioctl+0x83/0x1970 [ 1146.537780] ? loop_clr_fd+0xac0/0xac0 [ 1146.541740] blkdev_ioctl+0x4d9/0x1810 [ 1146.545648] ? blkpg_ioctl+0x910/0x910 [ 1146.549526] ? __handle_mm_fault+0x182c/0x2640 [ 1146.554169] ? lock_downgrade+0x5d0/0x5d0 [ 1146.558314] block_ioctl+0xd9/0x120 [ 1146.561963] ? blkdev_fallocate+0x3b0/0x3b0 [ 1146.566277] do_vfs_ioctl+0xabe/0x1040 [ 1146.570247] ? selinux_file_ioctl+0x426/0x590 [ 1146.574728] ? selinux_file_ioctl+0x116/0x590 [ 1146.579203] ? ioctl_preallocate+0x1e0/0x1e0 [ 1146.583639] ? selinux_parse_skb.constprop.0+0x16b0/0x16b0 [ 1146.589347] ? __do_page_fault+0x48e/0xb80 [ 1146.593633] ? lock_downgrade+0x5cb/0x5d0 [ 1146.597772] ? security_file_ioctl+0x7c/0xb0 [ 1146.602217] SyS_ioctl+0x7f/0xb0 [ 1146.605567] ? do_vfs_ioctl+0x1040/0x1040 [ 1146.609698] do_syscall_64+0x19b/0x4b0 [ 1146.613619] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1146.618978] INFO: task blkid:3014 blocked for more than 140 seconds. [ 1146.625499] Not tainted 4.14.113+ #61 [ 1146.629809] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1146.637846] blkid D28328 3014 2921 0x00000004 [ 1146.644154] Call Trace: [ 1146.646859] ? __schedule+0x91c/0x1f30 [ 1146.650806] ? __sched_text_start+0x8/0x8 [ 1146.655020] ? lock_downgrade+0x5d0/0x5d0 [ 1146.659151] ? lock_acquire+0x10f/0x380 [ 1146.663188] ? __mutex_lock+0x2c1/0x1430 [ 1146.667235] schedule+0x92/0x1c0 [ 1146.670748] schedule_preempt_disabled+0x13/0x20 [ 1146.675493] __mutex_lock+0x559/0x1430 [ 1146.679489] ? __mutex_lock+0x6aa/0x1430 [ 1146.683602] ? __mutex_unlock_slowpath+0x9a/0x7d0 [ 1146.688522] ? lo_open+0x19/0xb0 [ 1146.691940] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1146.697374] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1146.702979] ? kobject_get_unless_zero+0x27/0x40 [ 1146.707728] ? get_disk+0xd0/0xd0 [ 1146.711264] ? exact_match+0x9/0x20 [ 1146.714882] ? blkdev_ioctl+0x1810/0x1810 [ 1146.719013] ? loop_unregister_transfer+0x90/0x90 [ 1146.723933] ? lo_open+0x19/0xb0 [ 1146.727290] lo_open+0x19/0xb0 [ 1146.730733] __blkdev_get+0x963/0xf90 [ 1146.734528] ? __blkdev_put+0x6d0/0x6d0 [ 1146.738484] ? fsnotify+0x8b0/0x1150 [ 1146.742236] blkdev_get+0x97/0x8b0 [ 1146.745758] ? bd_acquire+0x171/0x2c0 [ 1146.749536] ? bd_may_claim+0xd0/0xd0 [ 1146.753471] ? lock_downgrade+0x5d0/0x5d0 [ 1146.757610] ? lock_acquire+0x10f/0x380 [ 1146.761604] ? bd_acquire+0x21/0x2c0 [ 1146.765307] blkdev_open+0x1cc/0x250 [ 1146.769003] ? security_file_open+0x88/0x190 [ 1146.773572] do_dentry_open+0x44e/0xdf0 [ 1146.777581] ? bd_acquire+0x2c0/0x2c0 [ 1146.781425] vfs_open+0x105/0x230 [ 1146.784871] path_openat+0xb6b/0x2b70 [ 1146.788670] ? path_mountpoint+0x9a0/0x9a0 [ 1146.792967] ? trace_hardirqs_on+0x10/0x10 [ 1146.797193] do_filp_open+0x1a1/0x280 [ 1146.801045] ? may_open_dev+0xe0/0xe0 [ 1146.804838] ? lock_downgrade+0x5d0/0x5d0 [ 1146.809047] ? lock_acquire+0x10f/0x380 [ 1146.813168] ? __alloc_fd+0x3f/0x490 [ 1146.816885] ? _raw_spin_unlock+0x29/0x40 [ 1146.821080] ? __alloc_fd+0x1bf/0x490 [ 1146.824873] do_sys_open+0x2ca/0x590 [ 1146.828564] ? filp_open+0x60/0x60 [ 1146.832178] ? do_syscall_64+0x43/0x4b0 [ 1146.836142] ? do_sys_open+0x590/0x590 [ 1146.840092] do_syscall_64+0x19b/0x4b0 [ 1146.844066] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1146.849422] [ 1146.849422] Showing all locks held in the system: [ 1146.856269] 1 lock held by khungtaskd/23: [ 1146.860505] #0: (tasklist_lock){.+.+}, at: [< (ptrval)>] debug_show_all_locks+0x7c/0x21a [ 1146.869527] 1 lock held by rsyslogd/1627: [ 1146.873919] #0: (&f->f_pos_lock){+.+.}, at: [< (ptrval)>] __fdget_pos+0xa6/0xc0 [ 1146.882189] 2 locks held by getty/1755: [ 1146.886139] #0: (&tty->ldisc_sem){++++}, at: [< (ptrval)>] tty_ldisc_ref_wait+0x22/0x80 [ 1146.895288] #1: (&ldata->atomic_read_lock){+.+.}, at: [< (ptrval)>] n_tty_read+0x1f7/0x1700 [ 1146.904612] 1 lock held by syz-executor.3/1964: [ 1146.909366] #0: (loop_ctl_mutex/1){+.+.}, at: [< (ptrval)>] lo_ioctl+0x83/0x1970 [ 1146.917791] 3 locks held by syz-executor.4/1968: [ 1146.922580] #0: (&bdev->bd_mutex){+.+.}, at: [< (ptrval)>] __blkdev_put+0xb1/0x6d0 [ 1146.931953] #1: (loop_index_mutex){+.+.}, at: [< (ptrval)>] lo_release+0x19/0x190 [ 1146.940551] #2: (loop_ctl_mutex#2){+.+.}, at: [< (ptrval)>] lo_release+0x78/0x190 [ 1146.948984] 1 lock held by syz-executor.5/1970: [ 1146.953830] #0: (loop_ctl_mutex/1){+.+.}, at: [< (ptrval)>] lo_ioctl+0x83/0x1970 [ 1146.962238] 1 lock held by syz-executor.0/1973: [ 1146.966987] #0: (loop_ctl_mutex/1){+.+.}, at: [< (ptrval)>] lo_ioctl+0x83/0x1970 [ 1146.975508] 1 lock held by syz-executor.1/1975: [ 1146.980195] #0: (loop_ctl_mutex/1){+.+.}, at: [< (ptrval)>] lo_ioctl+0x83/0x1970 [ 1146.988531] 1 lock held by blkid/3006: [ 1146.992663] #0: (loop_ctl_mutex/1){+.+.}, at: [< (ptrval)>] lo_ioctl+0x83/0x1970 [ 1147.001206] 1 lock held by blkid/3008: [ 1147.005079] #0: (loop_ctl_mutex/1){+.+.}, at: [< (ptrval)>] lo_ioctl+0x83/0x1970 [ 1147.013754] 2 locks held by syz-executor.2/3009: [ 1147.018501] #0: (loop_ctl_mutex/1){+.+.}, at: [< (ptrval)>] lo_ioctl+0x83/0x1970 [ 1147.027012] #1: (&bdev->bd_mutex){+.+.}, at: [< (ptrval)>] blkdev_reread_part+0x1b/0x40 [ 1147.036008] 1 lock held by blkid/3010: [ 1147.039877] #0: (loop_ctl_mutex/1){+.+.}, at: [< (ptrval)>] lo_ioctl+0x83/0x1970 [ 1147.048299] 2 locks held by blkid/3014: [ 1147.052288] #0: (&bdev->bd_mutex){+.+.}, at: [< (ptrval)>] __blkdev_get+0xf3/0xf90 [ 1147.060822] #1: (loop_index_mutex){+.+.}, at: [< (ptrval)>] lo_open+0x19/0xb0 [ 1147.068881] 2 locks held by blkid/3015: [ 1147.072985] #0: (&bdev->bd_mutex){+.+.}, at: [< (ptrval)>] __blkdev_get+0xf3/0xf90 [ 1147.081500] #1: (loop_index_mutex){+.+.}, at: [< (ptrval)>] lo_open+0x19/0xb0 [ 1147.089549] 1 lock held by blkid/3016: [ 1147.093457] #0: (&bdev->bd_mutex){+.+.}, at: [< (ptrval)>] __blkdev_get+0xf3/0xf90 [ 1147.102069] [ 1147.103681] ============================================= [ 1147.103681] [ 1147.110828] NMI backtrace for cpu 0 [ 1147.114499] CPU: 0 PID: 23 Comm: khungtaskd Not tainted 4.14.113+ #61 [ 1147.121061] Call Trace: [ 1147.123645] dump_stack+0xb9/0x10e [ 1147.127172] ? irq_force_complete_move.cold+0x2c/0x7b [ 1147.132340] nmi_cpu_backtrace.cold+0x47/0x86 [ 1147.136813] ? irq_force_complete_move.cold+0x7b/0x7b [ 1147.142030] ? nmi_trigger_cpumask_backtrace+0x119/0x147 [ 1147.147478] ? watchdog+0x5e2/0xb80 [ 1147.151111] ? hungtask_pm_notify+0x50/0x50 [ 1147.155568] ? kthread+0x310/0x420 [ 1147.159090] ? kthread_create_on_node+0xf0/0xf0 [ 1147.163739] ? ret_from_fork+0x3a/0x50 [ 1147.167722] Sending NMI from CPU 0 to CPUs 1: [ 1147.172325] NMI backtrace for cpu 1 skipped: idling at pc 0xffffffff9424ece2 [ 1147.173249] Kernel panic - not syncing: hung_task: blocked tasks [ 1147.185896] CPU: 0 PID: 23 Comm: khungtaskd Not tainted 4.14.113+ #61 [ 1147.192498] Call Trace: [ 1147.195081] dump_stack+0xb9/0x10e [ 1147.198609] panic+0x1d9/0x3c2 [ 1147.201811] ? add_taint.cold+0x16/0x16 [ 1147.205771] ? _raw_spin_unlock_irqrestore+0x54/0x70 [ 1147.210858] ? cpumask_next+0x1f/0x30 [ 1147.214638] ? printk_safe_flush+0xac/0x110 [ 1147.218944] watchdog+0x5f3/0xb80 [ 1147.222444] ? hungtask_pm_notify+0x50/0x50 [ 1147.226754] kthread+0x310/0x420 [ 1147.230100] ? kthread_create_on_node+0xf0/0xf0 [ 1147.234748] ret_from_fork+0x3a/0x50 [ 1147.238866] Kernel Offset: 0x11a00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 1147.249783] Rebooting in 86400 seconds..