Warning: Permanently added '10.128.1.31' (ECDSA) to the list of known hosts. [ 860.898517] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program executing program [ 861.025931] audit: type=1400 audit(1570299298.255:36): avc: denied { map } for pid=6989 comm="syz-executor174" path="/root/syz-executor174016849" 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 984.415849] audit: type=1400 audit(1570299421.645:37): avc: denied { map } for pid=7115 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 [ 1144.800268] INFO: task syz-executor174:7090 blocked for more than 140 seconds. [ 1144.807871] Not tainted 4.14.147 #0 [ 1144.812110] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1144.820176] syz-executor174 D28368 7090 6995 0x00000004 [ 1144.825801] Call Trace: [ 1144.828538] __schedule+0x7b8/0x1cd0 [ 1144.832980] ? __mutex_lock+0x737/0x1470 [ 1144.837057] ? pci_mmcfg_check_reserved+0x150/0x150 [ 1144.842163] schedule+0x92/0x1c0 [ 1144.845532] schedule_preempt_disabled+0x13/0x20 [ 1144.850349] __mutex_lock+0x73c/0x1470 [ 1144.854287] ? blkdev_reread_part+0x1f/0x40 [ 1144.858725] ? mutex_trylock+0x1c0/0x1c0 [ 1144.862901] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1144.868013] ? __wake_up_common_lock+0xe3/0x160 [ 1144.872898] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 1144.878153] mutex_lock_nested+0x16/0x20 [ 1144.882869] ? mutex_lock_nested+0x16/0x20 [ 1144.887119] blkdev_reread_part+0x1f/0x40 [ 1144.892109] loop_reread_partitions+0x7c/0x90 [ 1144.896793] loop_set_status+0xc25/0x11f0 [ 1144.901092] loop_set_status64+0xa6/0xf0 [ 1144.905352] ? loop_set_status_old+0x2d0/0x2d0 [ 1144.909979] ? avc_ss_reset+0x110/0x110 [ 1144.914042] lo_ioctl+0x5c1/0x1ce0 [ 1144.917811] ? loop_probe+0x160/0x160 [ 1144.921735] blkdev_ioctl+0x96b/0x1860 [ 1144.925801] ? blkpg_ioctl+0x980/0x980 [ 1144.930206] ? __might_sleep+0x93/0xb0 [ 1144.934238] block_ioctl+0xde/0x120 [ 1144.938301] ? blkdev_fallocate+0x3b0/0x3b0 [ 1144.943052] do_vfs_ioctl+0x7ae/0x1060 [ 1144.947077] ? selinux_file_mprotect+0x5d0/0x5d0 [ 1144.952065] ? ioctl_preallocate+0x1c0/0x1c0 [ 1144.956550] ? putname+0xe0/0x120 [ 1144.960727] ? do_sys_open+0x221/0x430 [ 1144.964719] ? security_file_ioctl+0x7d/0xb0 [ 1144.969233] ? security_file_ioctl+0x89/0xb0 [ 1144.973779] SyS_ioctl+0x8f/0xc0 [ 1144.977372] ? do_vfs_ioctl+0x1060/0x1060 [ 1144.981882] do_syscall_64+0x1e8/0x640 [ 1144.986010] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1144.990955] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1144.996256] RIP: 0033:0x4414b7 [ 1144.999520] RSP: 002b:00007ffd613be128 EFLAGS: 00000202 ORIG_RAX: 0000000000000010 [ 1145.007332] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004414b7 [ 1145.014662] RDX: 00007ffd613be1c0 RSI: 0000000000004c04 RDI: 0000000000000005 [ 1145.022363] RBP: 0000000000000004 R08: 0000000000000000 R09: 000000000000000a [ 1145.029817] R10: 0000000000000075 R11: 0000000000000202 R12: 00000000004022c0 [ 1145.037486] R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 [ 1145.045352] INFO: task syz-executor174:7093 blocked for more than 140 seconds. [ 1145.053023] Not tainted 4.14.147 #0 [ 1145.058487] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.066751] syz-executor174 D28208 7093 6990 0x00000004 [ 1145.072901] Call Trace: [ 1145.075494] __schedule+0x7b8/0x1cd0 [ 1145.080009] ? __mutex_lock+0x737/0x1470 [ 1145.086741] ? pci_mmcfg_check_reserved+0x150/0x150 [ 1145.093423] schedule+0x92/0x1c0 [ 1145.097791] schedule_preempt_disabled+0x13/0x20 [ 1145.102672] __mutex_lock+0x73c/0x1470 [ 1145.106694] ? blkdev_reread_part+0x1f/0x40 [ 1145.111374] ? mutex_trylock+0x1c0/0x1c0 [ 1145.115482] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1145.121786] ? __wake_up_common_lock+0xe3/0x160 [ 1145.126695] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 1145.131964] mutex_lock_nested+0x16/0x20 [ 1145.136255] ? mutex_lock_nested+0x16/0x20 [ 1145.140572] blkdev_reread_part+0x1f/0x40 [ 1145.144894] loop_reread_partitions+0x7c/0x90 [ 1145.149537] loop_set_status+0xc25/0x11f0 [ 1145.153832] loop_set_status64+0xa6/0xf0 [ 1145.157903] ? loop_set_status_old+0x2d0/0x2d0 [ 1145.162784] ? avc_ss_reset+0x110/0x110 [ 1145.166765] lo_ioctl+0x5c1/0x1ce0 [ 1145.170372] ? loop_probe+0x160/0x160 [ 1145.174190] blkdev_ioctl+0x96b/0x1860 [ 1145.178067] ? blkpg_ioctl+0x980/0x980 [ 1145.182145] ? __might_sleep+0x93/0xb0 [ 1145.186218] block_ioctl+0xde/0x120 [ 1145.189914] ? blkdev_fallocate+0x3b0/0x3b0 [ 1145.194476] do_vfs_ioctl+0x7ae/0x1060 [ 1145.198533] ? selinux_file_mprotect+0x5d0/0x5d0 [ 1145.203667] ? ioctl_preallocate+0x1c0/0x1c0 [ 1145.208075] ? putname+0xe0/0x120 [ 1145.211621] ? do_sys_open+0x221/0x430 [ 1145.215526] ? security_file_ioctl+0x7d/0xb0 [ 1145.219920] ? security_file_ioctl+0x89/0xb0 [ 1145.225257] SyS_ioctl+0x8f/0xc0 [ 1145.228622] ? do_vfs_ioctl+0x1060/0x1060 [ 1145.232912] do_syscall_64+0x1e8/0x640 [ 1145.236804] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1145.241812] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.247091] RIP: 0033:0x4414b7 [ 1145.250320] RSP: 002b:00007ffd613be128 EFLAGS: 00000202 ORIG_RAX: 0000000000000010 [ 1145.258218] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004414b7 [ 1145.265583] RDX: 00007ffd613be1c0 RSI: 0000000000004c04 RDI: 0000000000000005 [ 1145.273181] RBP: 0000000000000004 R08: 0000000000000000 R09: 000000000000000a [ 1145.281123] R10: 0000000000000075 R11: 0000000000000202 R12: 00000000004022c0 [ 1145.288611] R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 [ 1145.295954] INFO: task syz-executor174:7102 blocked for more than 140 seconds. [ 1145.303535] Not tainted 4.14.147 #0 [ 1145.307716] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.316745] syz-executor174 D28168 7102 6993 0x00000004 [ 1145.322475] Call Trace: [ 1145.325066] __schedule+0x7b8/0x1cd0 [ 1145.328757] ? __mutex_lock+0x737/0x1470 [ 1145.332962] ? pci_mmcfg_check_reserved+0x150/0x150 [ 1145.338170] schedule+0x92/0x1c0 [ 1145.341599] schedule_preempt_disabled+0x13/0x20 [ 1145.346345] __mutex_lock+0x73c/0x1470 [ 1145.350831] ? loop_control_ioctl+0x65/0x2f0 [ 1145.355392] ? follow_pfn+0x140/0x220 [ 1145.359291] ? mutex_trylock+0x1c0/0x1c0 [ 1145.363813] ? do_wp_page+0x253/0x12b0 [ 1145.367741] mutex_lock_nested+0x16/0x20 [ 1145.371867] ? mutex_lock_nested+0x16/0x20 [ 1145.376112] loop_control_ioctl+0x65/0x2f0 [ 1145.380411] ? loop_add+0x850/0x850 [ 1145.384034] ? loop_add+0x850/0x850 [ 1145.387730] do_vfs_ioctl+0x7ae/0x1060 [ 1145.391752] ? selinux_file_mprotect+0x5d0/0x5d0 [ 1145.396505] ? ioctl_preallocate+0x1c0/0x1c0 [ 1145.400975] ? lock_downgrade+0x740/0x740 [ 1145.405143] ? security_file_ioctl+0x7d/0xb0 [ 1145.409535] ? security_file_ioctl+0x89/0xb0 [ 1145.414177] SyS_ioctl+0x8f/0xc0 [ 1145.417550] ? do_vfs_ioctl+0x1060/0x1060 [ 1145.421856] do_syscall_64+0x1e8/0x640 [ 1145.425906] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1145.430956] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.436148] RIP: 0033:0x4415a9 [ 1145.439318] RSP: 002b:00007ffd613be368 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 1145.447267] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004415a9 [ 1145.454754] RDX: 0000000000000000 RSI: 0000000000004c81 RDI: 0000000000000003 [ 1145.462604] RBP: 00000000000d2c52 R08: 0000000000000001 R09: 0000000000000001 [ 1145.470284] R10: 0000000000000004 R11: 0000000000000246 R12: 00000000004022c0 [ 1145.477563] R13: 0000000000402350 R14: 0000000000000000 R15: 0000000000000000 [ 1145.485559] INFO: task syz-executor174:7104 blocked for more than 140 seconds. [ 1145.493497] Not tainted 4.14.147 #0 [ 1145.498059] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.506555] syz-executor174 D28528 7104 6994 0x00000004 [ 1145.512411] Call Trace: [ 1145.515020] __schedule+0x7b8/0x1cd0 [ 1145.518820] ? __mutex_lock+0x737/0x1470 [ 1145.522944] ? pci_mmcfg_check_reserved+0x150/0x150 [ 1145.527986] schedule+0x92/0x1c0 [ 1145.531492] schedule_preempt_disabled+0x13/0x20 [ 1145.536452] __mutex_lock+0x73c/0x1470 [ 1145.540423] ? loop_control_ioctl+0x153/0x2f0 [ 1145.544925] ? follow_pfn+0x140/0x220 [ 1145.548710] ? mutex_trylock+0x1c0/0x1c0 [ 1145.553104] ? do_wp_page+0x253/0x12b0 [ 1145.557158] ? __radix_tree_lookup+0x1b3/0x2f0 [ 1145.562105] mutex_lock_nested+0x16/0x20 [ 1145.566166] ? mutex_lock_nested+0x16/0x20 [ 1145.570506] loop_control_ioctl+0x153/0x2f0 [ 1145.574901] ? loop_add+0x850/0x850 [ 1145.578511] ? loop_add+0x850/0x850 [ 1145.582240] do_vfs_ioctl+0x7ae/0x1060 [ 1145.586137] ? selinux_file_mprotect+0x5d0/0x5d0 [ 1145.590953] ? ioctl_preallocate+0x1c0/0x1c0 [ 1145.595383] ? lock_downgrade+0x740/0x740 [ 1145.599548] ? security_file_ioctl+0x7d/0xb0 [ 1145.604009] ? security_file_ioctl+0x89/0xb0 [ 1145.608430] SyS_ioctl+0x8f/0xc0 [ 1145.612330] ? do_vfs_ioctl+0x1060/0x1060 [ 1145.616487] do_syscall_64+0x1e8/0x640 [ 1145.620426] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1145.625395] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.630722] RIP: 0033:0x4415a9 [ 1145.634658] RSP: 002b:00007ffd613be368 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 1145.642562] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004415a9 [ 1145.649918] RDX: 0000000000000000 RSI: 0000000000004c81 RDI: 0000000000000003 [ 1145.657327] RBP: 00000000000d2b30 R08: 0000000000000001 R09: 0000000000000001 [ 1145.665181] R10: 0000000000000004 R11: 0000000000000246 R12: 00000000004022c0 [ 1145.672513] R13: 0000000000402350 R14: 0000000000000000 R15: 0000000000000000 [ 1145.679923] INFO: task blkid:7106 blocked for more than 140 seconds. [ 1145.686580] Not tainted 4.14.147 #0 [ 1145.690752] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.699159] blkid D28936 7106 7005 0x00000004 [ 1145.704949] Call Trace: [ 1145.707544] __schedule+0x7b8/0x1cd0 [ 1145.711337] ? __mutex_lock+0x737/0x1470 [ 1145.715486] ? pci_mmcfg_check_reserved+0x150/0x150 [ 1145.720738] schedule+0x92/0x1c0 [ 1145.724105] schedule_preempt_disabled+0x13/0x20 [ 1145.729199] __mutex_lock+0x73c/0x1470 [ 1145.733339] ? trace_hardirqs_on+0x10/0x10 [ 1145.737850] ? lo_open+0x1d/0xb0 [ 1145.741815] ? refcount_add+0x10/0x50 [ 1145.745671] ? mutex_trylock+0x1c0/0x1c0 [ 1145.749735] ? find_held_lock+0x35/0x130 [ 1145.753971] ? disk_get_part+0x9c/0x140 [ 1145.757955] ? lock_downgrade+0x740/0x740 [ 1145.762422] ? loop_unregister_transfer+0x90/0x90 [ 1145.767386] mutex_lock_nested+0x16/0x20 [ 1145.771502] ? mutex_lock_nested+0x16/0x20 [ 1145.775736] lo_open+0x1d/0xb0 [ 1145.778907] __blkdev_get+0x2c7/0x1120 [ 1145.782870] ? __blkdev_put+0x7f0/0x7f0 [ 1145.787040] ? bd_acquire+0x178/0x2c0 [ 1145.790997] ? find_held_lock+0x35/0x130 [ 1145.795389] blkdev_get+0xa8/0x8e0 [ 1145.798920] ? bd_may_claim+0xd0/0xd0 [ 1145.802954] ? _raw_spin_unlock+0x2d/0x50 [ 1145.807191] blkdev_open+0x1d1/0x260 [ 1145.810971] ? security_file_open+0x89/0x190 [ 1145.815480] do_dentry_open+0x73b/0xeb0 [ 1145.819577] ? bd_acquire+0x2c0/0x2c0 [ 1145.823885] vfs_open+0x105/0x220 [ 1145.827437] path_openat+0x8bd/0x3f70 [ 1145.831319] ? trace_hardirqs_on+0x10/0x10 [ 1145.835561] ? path_lookupat.isra.0+0x7b0/0x7b0 [ 1145.840391] ? find_held_lock+0x35/0x130 [ 1145.844539] ? __alloc_fd+0x1d4/0x4a0 [ 1145.848416] do_filp_open+0x18e/0x250 [ 1145.852330] ? may_open_dev+0xe0/0xe0 [ 1145.856423] ? _raw_spin_unlock+0x2d/0x50 [ 1145.860760] ? __alloc_fd+0x1d4/0x4a0 [ 1145.864692] do_sys_open+0x2c5/0x430 [ 1145.868396] ? filp_open+0x70/0x70 [ 1145.872603] SyS_open+0x2d/0x40 [ 1145.875968] ? do_sys_open+0x430/0x430 [ 1145.879842] do_syscall_64+0x1e8/0x640 [ 1145.883788] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1145.888904] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.894592] RIP: 0033:0x7f084344b120 [ 1145.898294] RSP: 002b:00007ffeb592fa88 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 1145.906073] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f084344b120 [ 1145.913469] RDX: 00007ffeb5931f41 RSI: 0000000000000000 RDI: 00007ffeb5931f41 [ 1145.921325] RBP: 0000000000000000 R08: 0000000000000078 R09: 0000000000000000 [ 1145.928675] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000f10030 [ 1145.936000] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005 [ 1145.943340] INFO: task blkid:7108 blocked for more than 140 seconds. [ 1145.949811] Not tainted 4.14.147 #0 [ 1145.953984] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.962451] blkid D28656 7108 6660 0x00000004 [ 1145.968167] Call Trace: [ 1145.970821] __schedule+0x7b8/0x1cd0 [ 1145.974632] ? __mutex_lock+0x737/0x1470 [ 1145.978678] ? pci_mmcfg_check_reserved+0x150/0x150 [ 1145.983782] schedule+0x92/0x1c0 [ 1145.987325] schedule_preempt_disabled+0x13/0x20 [ 1145.992222] __mutex_lock+0x73c/0x1470 [ 1145.996200] ? lo_open+0x1d/0xb0 [ 1145.999560] ? refcount_add+0x10/0x50 [ 1146.004269] ? mutex_trylock+0x1c0/0x1c0 [ 1146.008351] ? exact_match+0xd/0x20 [ 1146.012034] ? kobj_lookup+0x314/0x400 [ 1146.015925] ? loop_unregister_transfer+0x90/0x90 [ 1146.020826] mutex_lock_nested+0x16/0x20 [ 1146.025235] ? mutex_lock_nested+0x16/0x20 [ 1146.029512] lo_open+0x1d/0xb0 [ 1146.032809] __blkdev_get+0xaad/0x1120 [ 1146.036719] ? __blkdev_put+0x7f0/0x7f0 [ 1146.040785] ? bd_acquire+0x178/0x2c0 [ 1146.044593] ? find_held_lock+0x35/0x130 [ 1146.048760] blkdev_get+0xa8/0x8e0 [ 1146.052359] ? bd_may_claim+0xd0/0xd0 [ 1146.056243] ? _raw_spin_unlock+0x2d/0x50 [ 1146.060666] blkdev_open+0x1d1/0x260 [ 1146.064479] ? security_file_open+0x89/0x190 [ 1146.068883] do_dentry_open+0x73b/0xeb0 [ 1146.073176] ? bd_acquire+0x2c0/0x2c0 [ 1146.077144] vfs_open+0x105/0x220 [ 1146.080999] path_openat+0x8bd/0x3f70 [ 1146.084842] ? trace_hardirqs_on+0x10/0x10 [ 1146.089082] ? path_lookupat.isra.0+0x7b0/0x7b0 [ 1146.094180] ? find_held_lock+0x35/0x130 [ 1146.098281] ? __alloc_fd+0x1d4/0x4a0 [ 1146.102264] do_filp_open+0x18e/0x250 [ 1146.106156] ? may_open_dev+0xe0/0xe0 [ 1146.110221] ? _raw_spin_unlock+0x2d/0x50 [ 1146.114399] ? __alloc_fd+0x1d4/0x4a0 [ 1146.118216] do_sys_open+0x2c5/0x430 [ 1146.122183] ? filp_open+0x70/0x70 [ 1146.125748] SyS_open+0x2d/0x40 [ 1146.129024] ? do_sys_open+0x430/0x430 [ 1146.133530] do_syscall_64+0x1e8/0x640 [ 1146.137468] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1146.142674] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1146.148348] RIP: 0033:0x7f78144f1120 [ 1146.152796] RSP: 002b:00007ffd7ea24788 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 1146.160906] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f78144f1120 [ 1146.168159] RDX: 00007ffd7ea25f41 RSI: 0000000000000000 RDI: 00007ffd7ea25f41 [ 1146.175475] RBP: 0000000000000000 R08: 0000000000000078 R09: 0000000000000000 [ 1146.182870] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000168a030 [ 1146.190698] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005 [ 1146.197986] INFO: task blkid:7109 blocked for more than 140 seconds. [ 1146.204626] Not tainted 4.14.147 #0 [ 1146.208770] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1146.216961] blkid D29040 7109 6972 0x00000004 [ 1146.222719] Call Trace: [ 1146.225304] __schedule+0x7b8/0x1cd0 [ 1146.229082] ? __mutex_lock+0x737/0x1470 [ 1146.233198] ? pci_mmcfg_check_reserved+0x150/0x150 [ 1146.238212] schedule+0x92/0x1c0 [ 1146.241629] schedule_preempt_disabled+0x13/0x20 [ 1146.246402] __mutex_lock+0x73c/0x1470 [ 1146.250352] ? lo_open+0x1d/0xb0 [ 1146.253800] ? refcount_add+0x10/0x50 [ 1146.257700] ? mutex_trylock+0x1c0/0x1c0 [ 1146.262532] ? exact_match+0xd/0x20 [ 1146.266423] ? kobj_lookup+0x314/0x400 [ 1146.270461] ? loop_unregister_transfer+0x90/0x90 [ 1146.275297] mutex_lock_nested+0x16/0x20 [ 1146.279536] ? mutex_lock_nested+0x16/0x20 [ 1146.284043] lo_open+0x1d/0xb0 [ 1146.287243] __blkdev_get+0xaad/0x1120 [ 1146.291182] ? __blkdev_put+0x7f0/0x7f0 [ 1146.295263] ? bd_acquire+0x178/0x2c0 [ 1146.299127] ? find_held_lock+0x35/0x130 [ 1146.303338] blkdev_get+0xa8/0x8e0 [ 1146.306926] ? bd_may_claim+0xd0/0xd0 [ 1146.310867] ? _raw_spin_unlock+0x2d/0x50 [ 1146.315105] blkdev_open+0x1d1/0x260 [ 1146.319031] ? security_file_open+0x89/0x190 [ 1146.323520] do_dentry_open+0x73b/0xeb0 [ 1146.327490] ? bd_acquire+0x2c0/0x2c0 [ 1146.331330] vfs_open+0x105/0x220 [ 1146.334868] path_openat+0x8bd/0x3f70 [ 1146.338662] ? trace_hardirqs_on+0x10/0x10 [ 1146.343316] ? path_lookupat.isra.0+0x7b0/0x7b0 [ 1146.348011] ? find_held_lock+0x35/0x130 [ 1146.352260] ? __alloc_fd+0x1d4/0x4a0 [ 1146.356060] do_filp_open+0x18e/0x250 [ 1146.360129] ? may_open_dev+0xe0/0xe0 [ 1146.364025] ? _raw_spin_unlock+0x2d/0x50 [ 1146.368155] ? __alloc_fd+0x1d4/0x4a0 [ 1146.372109] do_sys_open+0x2c5/0x430 [ 1146.375997] ? filp_open+0x70/0x70 [ 1146.379524] SyS_open+0x2d/0x40 [ 1146.383031] ? do_sys_open+0x430/0x430 [ 1146.386916] do_syscall_64+0x1e8/0x640 [ 1146.391301] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1146.396409] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1146.401688] RIP: 0033:0x7f9018b95120 [ 1146.405392] RSP: 002b:00007ffc1fe71568 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 1146.413160] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9018b95120 [ 1146.420869] RDX: 00007ffc1fe72f41 RSI: 0000000000000000 RDI: 00007ffc1fe72f41 [ 1146.428225] RBP: 0000000000000000 R08: 0000000000000078 R09: 0000000000000000 [ 1146.435669] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000008b9030 [ 1146.443171] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005 [ 1146.450588] INFO: task syz-executor174:7110 blocked for more than 140 seconds. [ 1146.458112] Not tainted 4.14.147 #0 [ 1146.462444] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1146.470713] syz-executor174 D28528 7110 6992 0x00000004 [ 1146.476429] Call Trace: [ 1146.479089] __schedule+0x7b8/0x1cd0 [ 1146.482858] ? __mutex_lock+0x737/0x1470 [ 1146.487135] ? pci_mmcfg_check_reserved+0x150/0x150 [ 1146.492592] schedule+0x92/0x1c0 [ 1146.496139] schedule_preempt_disabled+0x13/0x20 [ 1146.501080] __mutex_lock+0x73c/0x1470 [ 1146.504989] ? loop_control_ioctl+0x65/0x2f0 [ 1146.509680] ? mutex_trylock+0x1c0/0x1c0 [ 1146.513799] ? retint_kernel+0x2d/0x2d [ 1146.517721] mutex_lock_nested+0x16/0x20 [ 1146.522768] ? mutex_lock_nested+0x16/0x20 [ 1146.527101] loop_control_ioctl+0x65/0x2f0 [ 1146.531863] ? loop_add+0x850/0x850 [ 1146.535500] ? loop_add+0x850/0x850 [ 1146.539203] do_vfs_ioctl+0x7ae/0x1060 [ 1146.543255] ? selinux_file_mprotect+0x5d0/0x5d0 [ 1146.548107] ? ioctl_preallocate+0x1c0/0x1c0 [ 1146.553031] ? lock_downgrade+0x740/0x740 [ 1146.557283] ? security_file_ioctl+0x7d/0xb0 [ 1146.561764] ? security_file_ioctl+0x89/0xb0 [ 1146.566192] SyS_ioctl+0x8f/0xc0 [ 1146.569542] ? do_vfs_ioctl+0x1060/0x1060 [ 1146.573922] do_syscall_64+0x1e8/0x640 [ 1146.577985] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1146.583209] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1146.588741] RIP: 0033:0x4415a9 [ 1146.592577] RSP: 002b:00007ffd613be368 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 1146.600636] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004415a9 [ 1146.607895] RDX: 0000000000000000 RSI: 0000000000004c81 RDI: 0000000000000003 [ 1146.615210] RBP: 00000000000d2bf2 R08: 0000000000000001 R09: 0000000000000001 [ 1146.622543] R10: 0000000000000004 R11: 0000000000000246 R12: 00000000004022c0 [ 1146.629808] R13: 0000000000402350 R14: 0000000000000000 R15: 0000000000000000 [ 1146.637160] INFO: task syz-executor174:7111 blocked for more than 140 seconds. [ 1146.644766] Not tainted 4.14.147 #0 [ 1146.648911] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1146.657426] syz-executor174 D28528 7111 6991 0x00000004 [ 1146.663103] Call Trace: [ 1146.665686] __schedule+0x7b8/0x1cd0 [ 1146.669467] ? __mutex_lock+0x737/0x1470 [ 1146.673759] ? pci_mmcfg_check_reserved+0x150/0x150 [ 1146.678984] schedule+0x92/0x1c0 [ 1146.682495] schedule_preempt_disabled+0x13/0x20 [ 1146.687416] __mutex_lock+0x73c/0x1470 [ 1146.691342] ? loop_control_ioctl+0x65/0x2f0 [ 1146.695746] ? follow_pfn+0x140/0x220 [ 1146.699529] ? mutex_trylock+0x1c0/0x1c0 [ 1146.703640] ? do_wp_page+0x253/0x12b0 [ 1146.707527] mutex_lock_nested+0x16/0x20 [ 1146.712329] ? mutex_lock_nested+0x16/0x20 [ 1146.716578] loop_control_ioctl+0x65/0x2f0 [ 1146.721124] ? loop_add+0x850/0x850 [ 1146.724764] ? loop_add+0x850/0x850 [ 1146.728474] do_vfs_ioctl+0x7ae/0x1060 [ 1146.732505] ? selinux_file_mprotect+0x5d0/0x5d0 [ 1146.737615] ? ioctl_preallocate+0x1c0/0x1c0 [ 1146.742086] ? lock_downgrade+0x740/0x740 [ 1146.746255] ? security_file_ioctl+0x7d/0xb0 [ 1146.750729] ? security_file_ioctl+0x89/0xb0 [ 1146.755829] SyS_ioctl+0x8f/0xc0 [ 1146.759610] ? do_vfs_ioctl+0x1060/0x1060 [ 1146.763871] do_syscall_64+0x1e8/0x640 [ 1146.767774] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1146.772933] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1146.778315] RIP: 0033:0x4415a9 [ 1146.782073] RSP: 002b:00007ffd613be368 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 1146.789800] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004415a9 [ 1146.797419] RDX: 0000000000000000 RSI: 0000000000004c81 RDI: 0000000000000003 [ 1146.805026] RBP: 00000000000d2c82 R08: 0000000000000001 R09: 0000000000000001 [ 1146.812635] R10: 0000000000000004 R11: 0000000000000246 R12: 00000000004022c0 [ 1146.819911] R13: 0000000000402350 R14: 0000000000000000 R15: 0000000000000000 [ 1146.827375] INFO: task blkid:7112 blocked for more than 140 seconds. [ 1146.834226] Not tainted 4.14.147 #0 [ 1146.838382] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1146.846497] blkid D28568 7112 7007 0x00000004 [ 1146.852279] Call Trace: [ 1146.854943] __schedule+0x7b8/0x1cd0 [ 1146.858745] ? __mutex_lock+0x737/0x1470 [ 1146.862872] ? pci_mmcfg_check_reserved+0x150/0x150 [ 1146.868073] schedule+0x92/0x1c0 [ 1146.871591] schedule_preempt_disabled+0x13/0x20 [ 1146.876435] __mutex_lock+0x73c/0x1470 [ 1146.880449] ? trace_hardirqs_on+0x10/0x10 [ 1146.884715] ? lo_open+0x1d/0xb0 [ 1146.888069] ? refcount_add+0x10/0x50 [ 1146.891916] ? mutex_trylock+0x1c0/0x1c0 [ 1146.895976] ? find_held_lock+0x35/0x130 [ 1146.900107] ? disk_get_part+0x9c/0x140 [ 1146.904169] ? lock_downgrade+0x740/0x740 [ 1146.908391] ? loop_unregister_transfer+0x90/0x90 [ 1146.914096] mutex_lock_nested+0x16/0x20 [ 1146.919047] ? mutex_lock_nested+0x16/0x20 [ 1146.923461] lo_open+0x1d/0xb0 [ 1146.926924] __blkdev_get+0x2c7/0x1120 [ 1146.930880] ? __blkdev_put+0x7f0/0x7f0 [ 1146.934964] ? bd_acquire+0x178/0x2c0 [ 1146.938833] ? find_held_lock+0x35/0x130 [ 1146.943073] blkdev_get+0xa8/0x8e0 [ 1146.949506] ? bd_may_claim+0xd0/0xd0 [ 1146.953479] ? _raw_spin_unlock+0x2d/0x50 [ 1146.958046] blkdev_open+0x1d1/0x260 [ 1146.961852] ? security_file_open+0x89/0x190 [ 1146.966354] do_dentry_open+0x73b/0xeb0 [ 1146.970403] ? bd_acquire+0x2c0/0x2c0 [ 1146.974365] vfs_open+0x105/0x220 [ 1146.977903] path_openat+0x8bd/0x3f70 [ 1146.981865] ? trace_hardirqs_on+0x10/0x10 [ 1146.986233] ? path_lookupat.isra.0+0x7b0/0x7b0 [ 1146.991039] ? find_held_lock+0x35/0x130 [ 1146.995389] ? __alloc_fd+0x1d4/0x4a0 [ 1146.999346] do_filp_open+0x18e/0x250 [ 1147.003765] ? may_open_dev+0xe0/0xe0 [ 1147.007691] ? _raw_spin_unlock+0x2d/0x50 [ 1147.012073] ? __alloc_fd+0x1d4/0x4a0 [ 1147.015979] do_sys_open+0x2c5/0x430 [ 1147.019952] ? filp_open+0x70/0x70 [ 1147.023663] SyS_open+0x2d/0x40 [ 1147.027032] ? do_sys_open+0x430/0x430 [ 1147.031063] do_syscall_64+0x1e8/0x640 [ 1147.034946] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1147.039865] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1147.046043] RIP: 0033:0x7f082586e120 [ 1147.049749] RSP: 002b:00007ffc99c74318 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 1147.057596] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f082586e120 [ 1147.065014] RDX: 00007ffc99c75f41 RSI: 0000000000000000 RDI: 00007ffc99c75f41 [ 1147.072329] RBP: 0000000000000000 R08: 0000000000000078 R09: 0000000000000000 [ 1147.079591] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000001cb2030 [ 1147.087013] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005 [ 1147.094411] [ 1147.094411] Showing all locks held in the system: [ 1147.100803] 1 lock held by khungtaskd/1012: [ 1147.105390] #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7f/0x21f [ 1147.114687] 2 locks held by getty/6965: [ 1147.118664] #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 [ 1147.127518] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 [ 1147.137255] 2 locks held by getty/6966: [ 1147.141280] #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 [ 1147.150439] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 [ 1147.159919] 2 locks held by getty/6967: [ 1147.163968] #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 [ 1147.172866] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 [ 1147.182618] 2 locks held by getty/6968: [ 1147.186648] #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 [ 1147.195593] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 [ 1147.205085] 2 locks held by getty/6969: [ 1147.209065] #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 [ 1147.217883] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 [ 1147.227475] 2 locks held by getty/6970: [ 1147.231573] #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 [ 1147.240498] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 [ 1147.250161] 2 locks held by getty/6971: [ 1147.254370] #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 [ 1147.263633] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 [ 1147.273103] 2 locks held by syz-executor174/7090: [ 1147.278142] #0: (&lo->lo_ctl_mutex/1){+.+.}, at: [] lo_ioctl+0x8f/0x1ce0 [ 1147.286843] #1: (&bdev->bd_mutex){+.+.}, at: [] blkdev_reread_part+0x1f/0x40 [ 1147.295963] 2 locks held by syz-executor174/7093: [ 1147.300936] #0: (&lo->lo_ctl_mutex/1){+.+.}, at: [] lo_ioctl+0x8f/0x1ce0 [ 1147.309880] #1: (&bdev->bd_mutex){+.+.}, at: [] blkdev_reread_part+0x1f/0x40 [ 1147.319141] 1 lock held by syz-executor174/7102: [ 1147.323968] #0: (loop_index_mutex){+.+.}, at: [] loop_control_ioctl+0x65/0x2f0 [ 1147.333426] 2 locks held by syz-executor174/7104: [ 1147.338748] #0: (loop_index_mutex){+.+.}, at: [] loop_control_ioctl+0x65/0x2f0 [ 1147.348092] #1: (&lo->lo_ctl_mutex#2){+.+.}, at: [] loop_control_ioctl+0x153/0x2f0 [ 1147.357934] 2 locks held by blkid/7106: [ 1147.362049] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x145/0x1120 [ 1147.371254] #1: (loop_index_mutex){+.+.}, at: [] lo_open+0x1d/0xb0 [ 1147.379327] 2 locks held by blkid/7108: [ 1147.383352] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x145/0x1120 [ 1147.392164] #1: (loop_index_mutex){+.+.}, at: [] lo_open+0x1d/0xb0 [ 1147.400352] 2 locks held by blkid/7109: [ 1147.404407] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x145/0x1120 [ 1147.413546] #1: (loop_index_mutex){+.+.}, at: [] lo_open+0x1d/0xb0 [ 1147.422238] 1 lock held by syz-executor174/7110: [ 1147.426981] #0: (loop_index_mutex){+.+.}, at: [] loop_control_ioctl+0x65/0x2f0 [ 1147.436847] 1 lock held by syz-executor174/7111: [ 1147.441763] #0: (loop_index_mutex){+.+.}, at: [] loop_control_ioctl+0x65/0x2f0 [ 1147.451283] 2 locks held by blkid/7112: [ 1147.455339] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x145/0x1120 [ 1147.464518] #1: (loop_index_mutex){+.+.}, at: [] lo_open+0x1d/0xb0 [ 1147.472895] 2 locks held by blkid/7113: [ 1147.476874] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x145/0x1120 [ 1147.485681] #1: (loop_index_mutex){+.+.}, at: [] lo_open+0x1d/0xb0 [ 1147.493827] [ 1147.495554] ============================================= [ 1147.495554] [ 1147.502901] NMI backtrace for cpu 0 [ 1147.506892] CPU: 0 PID: 1012 Comm: khungtaskd Not tainted 4.14.147 #0 [ 1147.513642] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1147.523290] Call Trace: [ 1147.525869] dump_stack+0x138/0x197 [ 1147.529554] nmi_cpu_backtrace.cold+0x57/0x94 [ 1147.534046] ? irq_force_complete_move.cold+0x7d/0x7d [ 1147.539307] nmi_trigger_cpumask_backtrace+0x141/0x189 [ 1147.544768] arch_trigger_cpumask_backtrace+0x14/0x20 [ 1147.550100] watchdog+0x5e7/0xb90 [ 1147.553580] kthread+0x319/0x430 [ 1147.556924] ? hungtask_pm_notify+0x50/0x50 [ 1147.561243] ? kthread_create_on_node+0xd0/0xd0 [ 1147.565896] ret_from_fork+0x24/0x30 [ 1147.569672] Sending NMI from CPU 0 to CPUs 1: [ 1147.574428] NMI backtrace for cpu 1 skipped: idling at pc 0xffffffff861c48ae [ 1147.575388] Kernel panic - not syncing: hung_task: blocked tasks [ 1147.588135] CPU: 0 PID: 1012 Comm: khungtaskd Not tainted 4.14.147 #0 [ 1147.594704] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1147.604411] Call Trace: [ 1147.607078] dump_stack+0x138/0x197 [ 1147.610798] panic+0x1f2/0x426 [ 1147.613990] ? add_taint.cold+0x16/0x16 [ 1147.617992] ? irq_force_complete_move.cold+0x7d/0x7d [ 1147.623404] watchdog+0x5f8/0xb90 [ 1147.626998] kthread+0x319/0x430 [ 1147.630348] ? hungtask_pm_notify+0x50/0x50 [ 1147.634968] ? kthread_create_on_node+0xd0/0xd0 [ 1147.640774] ret_from_fork+0x24/0x30 [ 1147.647933] Kernel Offset: disabled [ 1147.651586] Rebooting in 86400 seconds..