[ 767.985101] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.116' (ECDSA) to the list of known hosts. [ 773.535017] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program executing program [ 773.657805] audit: type=1400 audit(1582995064.265:36): avc: denied { map } for pid=7488 comm="syz-executor848" path="/root/syz-executor848947954" 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 [ 1001.430253] INFO: task syz-executor848:7517 blocked for more than 140 seconds. [ 1001.441431] Not tainted 4.14.172-syzkaller #0 [ 1001.446614] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1001.463670] syz-executor848 D26960 7517 7494 0x00000004 [ 1001.470539] Call Trace: [ 1001.473213] ? __schedule+0x7b8/0x1ca0 [ 1001.477271] ? __mutex_lock+0x737/0x1470 [ 1001.481577] ? __sched_text_start+0x8/0x8 [ 1001.486014] ? lock_downgrade+0x6e0/0x6e0 [ 1001.491076] schedule+0x8d/0x1b0 [ 1001.495842] schedule_preempt_disabled+0xf/0x20 [ 1001.501439] __mutex_lock+0x73c/0x1470 [ 1001.506374] ? loop_control_ioctl+0x15b/0x2d0 [ 1001.511914] ? idr_get_next_ext+0xe1/0x130 [ 1001.517392] ? mutex_trylock+0x1a0/0x1a0 [ 1001.521853] ? loop_control_ioctl+0x15b/0x2d0 [ 1001.527003] loop_control_ioctl+0x15b/0x2d0 [ 1001.531382] ? loop_add+0x830/0x830 [ 1001.535741] ? selinux_file_ioctl+0x3f7/0x560 [ 1001.540570] ? loop_add+0x830/0x830 [ 1001.544275] do_vfs_ioctl+0x75a/0xfe0 [ 1001.548086] ? selinux_file_mprotect+0x5c0/0x5c0 [ 1001.553015] ? ioctl_preallocate+0x1a0/0x1a0 [ 1001.557449] ? get_unused_fd_flags+0xc0/0xc0 [ 1001.562310] ? security_file_ioctl+0x76/0xb0 [ 1001.567831] ? security_file_ioctl+0x83/0xb0 [ 1001.573252] SyS_ioctl+0x7f/0xb0 [ 1001.576643] ? do_vfs_ioctl+0xfe0/0xfe0 [ 1001.580803] do_syscall_64+0x1d5/0x640 [ 1001.584932] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1001.590308] RIP: 0033:0x441b09 [ 1001.593566] RSP: 002b:00007ffcd646a208 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 1001.601633] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441b09 [ 1001.609273] RDX: 9999999999999999 RSI: 0000000000004c81 RDI: 0000000000000004 [ 1001.616629] RBP: 00000000000bce1f R08: 00000000004028b0 R09: 00000000004028b0 [ 1001.624266] R10: 00000000004028b0 R11: 0000000000000246 R12: 0000000000402820 [ 1001.631930] R13: 00000000004028b0 R14: 0000000000000000 R15: 0000000000000000 [ 1001.639520] INFO: task syz-executor848:7519 blocked for more than 140 seconds. [ 1001.647621] Not tainted 4.14.172-syzkaller #0 [ 1001.652901] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1001.661087] syz-executor848 D27408 7519 7489 0x00000004 [ 1001.668211] Call Trace: [ 1001.672601] ? __schedule+0x7b8/0x1ca0 [ 1001.676998] ? __mutex_lock+0x737/0x1470 [ 1001.681211] ? __sched_text_start+0x8/0x8 [ 1001.685461] ? lock_downgrade+0x6e0/0x6e0 [ 1001.689610] schedule+0x8d/0x1b0 [ 1001.693030] schedule_preempt_disabled+0xf/0x20 [ 1001.698008] __mutex_lock+0x73c/0x1470 [ 1001.702015] ? __wake_up_common_lock+0xcd/0x140 [ 1001.707042] ? blkdev_reread_part+0x1b/0x40 [ 1001.711697] ? mutex_trylock+0x1a0/0x1a0 [ 1001.716011] ? trace_hardirqs_on_caller+0x3f6/0x590 [ 1001.721083] ? _raw_spin_unlock_irqrestore+0xa0/0xe0 [ 1001.726216] ? __wake_up_common_lock+0xcd/0x140 [ 1001.731097] ? blkdev_reread_part+0x1b/0x40 [ 1001.735448] blkdev_reread_part+0x1b/0x40 [ 1001.739735] loop_reread_partitions+0x72/0x80 [ 1001.744605] loop_clr_fd+0x839/0xad0 [ 1001.748697] lo_ioctl+0x8a5/0x1c40 [ 1001.752357] ? __check_object_size+0x208/0x28a [ 1001.757255] ? kmem_cache_alloc+0x604/0x770 [ 1001.761740] ? loop_probe+0x160/0x160 [ 1001.766083] blkdev_ioctl+0x91d/0x17d0 [ 1001.770186] ? blkpg_ioctl+0x8e0/0x8e0 [ 1001.774333] block_ioctl+0xd9/0x120 [ 1001.777970] ? blkdev_fallocate+0x3a0/0x3a0 [ 1001.782399] do_vfs_ioctl+0x75a/0xfe0 [ 1001.786218] ? selinux_file_mprotect+0x5c0/0x5c0 [ 1001.791212] ? ioctl_preallocate+0x1a0/0x1a0 [ 1001.795772] ? cp_new_stat+0x580/0x580 [ 1001.799670] ? kmem_cache_free+0x23a/0x2b0 [ 1001.804179] ? putname+0xcd/0x110 [ 1001.807773] ? security_file_ioctl+0x76/0xb0 [ 1001.812364] ? security_file_ioctl+0x83/0xb0 [ 1001.816940] SyS_ioctl+0x7f/0xb0 [ 1001.820376] ? do_vfs_ioctl+0xfe0/0xfe0 [ 1001.824507] do_syscall_64+0x1d5/0x640 [ 1001.828400] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1001.834029] RIP: 0033:0x441a17 [ 1001.837572] RSP: 002b:00007ffcd6469fa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 1001.845605] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000441a17 [ 1001.853239] RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000004 [ 1001.860685] RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000c [ 1001.868157] R10: 0000000000000064 R11: 0000000000000246 R12: 0000000000402820 [ 1001.875491] R13: 00000000004028b0 R14: 0000000000000000 R15: 0000000000000000 [ 1001.883109] INFO: task syz-executor848:7520 blocked for more than 140 seconds. [ 1001.890646] Not tainted 4.14.172-syzkaller #0 [ 1001.895957] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1001.904304] syz-executor848 D28688 7520 7490 0x00000004 [ 1001.910182] Call Trace: [ 1001.912774] ? __schedule+0x7b8/0x1ca0 [ 1001.916849] ? __mutex_lock+0x737/0x1470 [ 1001.920970] ? __sched_text_start+0x8/0x8 [ 1001.925320] ? lock_downgrade+0x6e0/0x6e0 [ 1001.929708] schedule+0x8d/0x1b0 [ 1001.938600] schedule_preempt_disabled+0xf/0x20 [ 1001.943690] __mutex_lock+0x73c/0x1470 [ 1001.947663] ? __wake_up_common_lock+0xcd/0x140 [ 1001.952634] ? blkdev_reread_part+0x1b/0x40 [ 1001.957037] ? mark_held_locks+0xa6/0xf0 [ 1001.961545] ? mutex_trylock+0x1a0/0x1a0 [ 1001.965636] ? _raw_spin_unlock_irqrestore+0xa0/0xe0 [ 1001.970893] ? __wake_up_common_lock+0xcd/0x140 [ 1001.976126] ? blkdev_reread_part+0x1b/0x40 [ 1001.981631] blkdev_reread_part+0x1b/0x40 [ 1001.985960] loop_reread_partitions+0x72/0x80 [ 1001.990820] loop_set_status+0xbfc/0x11f0 [ 1001.995190] loop_set_status64+0x92/0xe0 [ 1001.999336] ? loop_set_status_old+0x2c0/0x2c0 [ 1002.004299] ? lock_acquire+0x170/0x3f0 [ 1002.008294] ? wait_for_completion+0x390/0x390 [ 1002.013138] lo_ioctl+0x590/0x1c40 [ 1002.016720] ? loop_probe+0x160/0x160 [ 1002.020575] blkdev_ioctl+0x91d/0x17d0 [ 1002.024562] ? blkpg_ioctl+0x8e0/0x8e0 [ 1002.028537] block_ioctl+0xd9/0x120 [ 1002.032224] ? blkdev_fallocate+0x3a0/0x3a0 [ 1002.036821] do_vfs_ioctl+0x75a/0xfe0 [ 1002.040819] ? selinux_file_mprotect+0x5c0/0x5c0 [ 1002.047233] ? ioctl_preallocate+0x1a0/0x1a0 [ 1002.051958] ? rcu_read_lock_sched_held+0x10a/0x130 [ 1002.066863] ? kmem_cache_free+0x23a/0x2b0 [ 1002.071821] ? putname+0xcd/0x110 [ 1002.075313] ? security_file_ioctl+0x76/0xb0 [ 1002.079845] ? security_file_ioctl+0x83/0xb0 [ 1002.084643] SyS_ioctl+0x7f/0xb0 [ 1002.088023] ? do_vfs_ioctl+0xfe0/0xfe0 [ 1002.092315] do_syscall_64+0x1d5/0x640 [ 1002.096368] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1002.101611] RIP: 0033:0x441a17 [ 1002.104881] RSP: 002b:00007ffcd6469fa8 EFLAGS: 00000202 ORIG_RAX: 0000000000000010 [ 1002.113073] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000441a17 [ 1002.121409] RDX: 00007ffcd646a070 RSI: 0000000000004c04 RDI: 0000000000000004 [ 1002.129158] RBP: 00000000000bce21 R08: 0000000000000000 R09: 000000000000000a [ 1002.137264] R10: 0000000000000075 R11: 0000000000000202 R12: 0000000000402820 [ 1002.146748] R13: 00000000004028b0 R14: 0000000000000000 R15: 0000000000000000 [ 1002.155788] INFO: task syz-executor848:7521 blocked for more than 140 seconds. [ 1002.167673] Not tainted 4.14.172-syzkaller #0 [ 1002.172927] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1002.187525] syz-executor848 D27408 7521 7492 0x00000004 [ 1002.193582] Call Trace: [ 1002.196631] ? __schedule+0x7b8/0x1ca0 [ 1002.202104] ? __mutex_lock+0x737/0x1470 [ 1002.206443] ? __sched_text_start+0x8/0x8 [ 1002.210661] ? lock_downgrade+0x6e0/0x6e0 [ 1002.214824] schedule+0x8d/0x1b0 [ 1002.218338] schedule_preempt_disabled+0xf/0x20 [ 1002.223322] __mutex_lock+0x73c/0x1470 [ 1002.227409] ? __wake_up_common_lock+0xcd/0x140 [ 1002.233354] ? blkdev_reread_part+0x1b/0x40 [ 1002.237871] ? mutex_trylock+0x1a0/0x1a0 [ 1002.242321] ? trace_hardirqs_on_caller+0x3f6/0x590 [ 1002.247361] ? _raw_spin_unlock_irqrestore+0xa0/0xe0 [ 1002.253177] ? __wake_up_common_lock+0xcd/0x140 [ 1002.257867] ? blkdev_reread_part+0x1b/0x40 [ 1002.262708] blkdev_reread_part+0x1b/0x40 [ 1002.267156] loop_reread_partitions+0x72/0x80 [ 1002.271967] loop_clr_fd+0x839/0xad0 [ 1002.275705] lo_ioctl+0x8a5/0x1c40 [ 1002.279444] ? __check_object_size+0x208/0x28a [ 1002.284218] ? kmem_cache_alloc+0x604/0x770 [ 1002.288916] ? loop_probe+0x160/0x160 [ 1002.292982] blkdev_ioctl+0x91d/0x17d0 [ 1002.297486] ? blkpg_ioctl+0x8e0/0x8e0 [ 1002.301457] block_ioctl+0xd9/0x120 [ 1002.305265] ? blkdev_fallocate+0x3a0/0x3a0 [ 1002.309708] do_vfs_ioctl+0x75a/0xfe0 [ 1002.313929] ? selinux_file_mprotect+0x5c0/0x5c0 [ 1002.318990] ? ioctl_preallocate+0x1a0/0x1a0 [ 1002.323631] ? cp_new_stat+0x580/0x580 [ 1002.327852] ? kmem_cache_free+0x23a/0x2b0 [ 1002.332165] ? putname+0xcd/0x110 [ 1002.335911] ? security_file_ioctl+0x76/0xb0 [ 1002.340860] ? security_file_ioctl+0x83/0xb0 [ 1002.345619] SyS_ioctl+0x7f/0xb0 [ 1002.349133] ? do_vfs_ioctl+0xfe0/0xfe0 [ 1002.353454] do_syscall_64+0x1d5/0x640 [ 1002.357365] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1002.363099] RIP: 0033:0x441a17 [ 1002.366307] RSP: 002b:00007ffcd6469fa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 1002.374220] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000441a17 [ 1002.382000] RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000004 [ 1002.389456] RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000c [ 1002.397080] R10: 0000000000000064 R11: 0000000000000246 R12: 0000000000402820 [ 1002.404495] R13: 00000000004028b0 R14: 0000000000000000 R15: 0000000000000000 [ 1002.411830] INFO: task syz-executor848:7522 blocked for more than 140 seconds. [ 1002.419649] Not tainted 4.14.172-syzkaller #0 [ 1002.425098] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1002.433774] syz-executor848 D28688 7522 7493 0x00000004 [ 1002.439654] Call Trace: [ 1002.442318] ? __schedule+0x7b8/0x1ca0 [ 1002.446312] ? __mutex_lock+0x737/0x1470 [ 1002.450748] ? __sched_text_start+0x8/0x8 [ 1002.455043] ? lock_downgrade+0x6e0/0x6e0 [ 1002.459456] schedule+0x8d/0x1b0 [ 1002.462882] schedule_preempt_disabled+0xf/0x20 [ 1002.467854] __mutex_lock+0x73c/0x1470 [ 1002.471808] ? __wake_up_common_lock+0xcd/0x140 [ 1002.476905] ? blkdev_reread_part+0x1b/0x40 [ 1002.481663] ? mark_held_locks+0xa6/0xf0 [ 1002.485852] ? mutex_trylock+0x1a0/0x1a0 [ 1002.490135] ? _raw_spin_unlock_irqrestore+0xa0/0xe0 [ 1002.495516] ? __wake_up_common_lock+0xcd/0x140 [ 1002.500861] ? blkdev_reread_part+0x1b/0x40 [ 1002.505218] blkdev_reread_part+0x1b/0x40 [ 1002.509541] loop_reread_partitions+0x72/0x80 [ 1002.514306] loop_set_status+0xbfc/0x11f0 [ 1002.518473] loop_set_status64+0x92/0xe0 [ 1002.522584] ? loop_set_status_old+0x2c0/0x2c0 [ 1002.527385] ? lock_acquire+0x170/0x3f0 [ 1002.531569] ? wait_for_completion+0x390/0x390 [ 1002.536173] lo_ioctl+0x590/0x1c40 [ 1002.539715] ? loop_probe+0x160/0x160 [ 1002.543778] blkdev_ioctl+0x91d/0x17d0 [ 1002.547821] ? blkpg_ioctl+0x8e0/0x8e0 [ 1002.551960] block_ioctl+0xd9/0x120 [ 1002.555886] ? blkdev_fallocate+0x3a0/0x3a0 [ 1002.560614] do_vfs_ioctl+0x75a/0xfe0 [ 1002.564570] ? selinux_file_mprotect+0x5c0/0x5c0 [ 1002.569552] ? ioctl_preallocate+0x1a0/0x1a0 [ 1002.574355] ? rcu_read_lock_sched_held+0x10a/0x130 [ 1002.579409] ? kmem_cache_free+0x23a/0x2b0 [ 1002.583718] ? putname+0xcd/0x110 [ 1002.587684] ? security_file_ioctl+0x76/0xb0 [ 1002.592615] ? security_file_ioctl+0x83/0xb0 [ 1002.597458] SyS_ioctl+0x7f/0xb0 [ 1002.601156] ? do_vfs_ioctl+0xfe0/0xfe0 [ 1002.605148] do_syscall_64+0x1d5/0x640 [ 1002.609369] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1002.614769] RIP: 0033:0x441a17 [ 1002.617969] RSP: 002b:00007ffcd6469fa8 EFLAGS: 00000202 ORIG_RAX: 0000000000000010 [ 1002.625868] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000441a17 [ 1002.633179] RDX: 00007ffcd646a070 RSI: 0000000000004c04 RDI: 0000000000000004 [ 1002.640685] RBP: 00000000000bce32 R08: 0000000000000000 R09: 000000000000000a [ 1002.647968] R10: 0000000000000075 R11: 0000000000000202 R12: 0000000000402820 [ 1002.655855] R13: 00000000004028b0 R14: 0000000000000000 R15: 0000000000000000 [ 1002.663319] INFO: task syz-executor848:7523 blocked for more than 140 seconds. [ 1002.671037] Not tainted 4.14.172-syzkaller #0 [ 1002.676058] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1002.684390] syz-executor848 D26832 7523 7491 0x00000004 [ 1002.690452] Call Trace: [ 1002.693046] ? __schedule+0x7b8/0x1ca0 [ 1002.696932] ? __mutex_lock+0x737/0x1470 [ 1002.701041] ? __sched_text_start+0x8/0x8 [ 1002.705207] ? lock_downgrade+0x6e0/0x6e0 [ 1002.709567] schedule+0x8d/0x1b0 [ 1002.712998] schedule_preempt_disabled+0xf/0x20 [ 1002.717947] __mutex_lock+0x73c/0x1470 [ 1002.721986] ? __wake_up_common_lock+0xcd/0x140 [ 1002.726911] ? blkdev_reread_part+0x1b/0x40 [ 1002.731389] ? mark_held_locks+0xa6/0xf0 [ 1002.735646] ? mutex_trylock+0x1a0/0x1a0 [ 1002.739721] ? _raw_spin_unlock_irqrestore+0xa0/0xe0 [ 1002.745203] ? __wake_up_common_lock+0xcd/0x140 [ 1002.750110] ? blkdev_reread_part+0x1b/0x40 [ 1002.754530] blkdev_reread_part+0x1b/0x40 [ 1002.759002] loop_reread_partitions+0x72/0x80 [ 1002.763711] loop_set_status+0xbfc/0x11f0 [ 1002.767875] loop_set_status64+0x92/0xe0 [ 1002.771981] ? loop_set_status_old+0x2c0/0x2c0 [ 1002.776725] ? lock_acquire+0x170/0x3f0 [ 1002.780892] ? wait_for_completion+0x390/0x390 [ 1002.785617] lo_ioctl+0x590/0x1c40 [ 1002.789154] ? loop_probe+0x160/0x160 [ 1002.793022] blkdev_ioctl+0x91d/0x17d0 [ 1002.797116] ? blkpg_ioctl+0x8e0/0x8e0 [ 1002.801204] block_ioctl+0xd9/0x120 [ 1002.804841] ? blkdev_fallocate+0x3a0/0x3a0 [ 1002.809327] do_vfs_ioctl+0x75a/0xfe0 [ 1002.813408] ? selinux_file_mprotect+0x5c0/0x5c0 [ 1002.818188] ? ioctl_preallocate+0x1a0/0x1a0 [ 1002.822839] ? rcu_read_lock_sched_held+0x10a/0x130 [ 1002.827871] ? kmem_cache_free+0x23a/0x2b0 [ 1002.832393] ? putname+0xcd/0x110 [ 1002.836018] ? security_file_ioctl+0x76/0xb0 [ 1002.840475] ? security_file_ioctl+0x83/0xb0 [ 1002.845100] SyS_ioctl+0x7f/0xb0 [ 1002.848461] ? do_vfs_ioctl+0xfe0/0xfe0 [ 1002.852649] do_syscall_64+0x1d5/0x640 [ 1002.856731] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1002.861992] RIP: 0033:0x441a17 [ 1002.865291] RSP: 002b:00007ffcd6469fa8 EFLAGS: 00000202 ORIG_RAX: 0000000000000010 [ 1002.873171] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000441a17 [ 1002.880705] RDX: 00007ffcd646a070 RSI: 0000000000004c04 RDI: 0000000000000004 [ 1002.888228] RBP: 00000000000bce3b R08: 0000000000000000 R09: 000000000000000a [ 1002.895792] R10: 0000000000000075 R11: 0000000000000202 R12: 0000000000402820 [ 1002.903437] R13: 00000000004028b0 R14: 0000000000000000 R15: 0000000000000000 [ 1002.911339] INFO: task blkid:7526 blocked for more than 140 seconds. [ 1002.918209] Not tainted 4.14.172-syzkaller #0 [ 1002.923408] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1002.931619] blkid D29200 7526 7473 0x00000004 [ 1002.937588] Call Trace: [ 1002.940500] ? __schedule+0x7b8/0x1ca0 [ 1002.944793] ? __mutex_lock+0x737/0x1470 [ 1002.948852] ? __sched_text_start+0x8/0x8 [ 1002.953387] ? lock_downgrade+0x6e0/0x6e0 [ 1002.957553] schedule+0x8d/0x1b0 [ 1002.961120] schedule_preempt_disabled+0xf/0x20 [ 1002.965890] __mutex_lock+0x73c/0x1470 [ 1002.969814] ? __blkdev_get+0x131/0x10d0 [ 1002.974086] ? lo_open+0x19/0xb0 [ 1002.977814] ? mutex_trylock+0x1a0/0x1a0 [ 1002.981934] ? get_disk+0xd0/0xd0 [ 1002.985556] ? exact_match+0x9/0x20 [ 1002.989378] ? kobj_lookup+0x320/0x410 [ 1002.993486] ? blkdev_ioctl+0x17d0/0x17d0 [ 1002.997654] ? loop_unregister_transfer+0x90/0x90 [ 1003.002887] ? lo_open+0x19/0xb0 [ 1003.006638] lo_open+0x19/0xb0 [ 1003.009998] __blkdev_get+0xa70/0x10d0 [ 1003.013992] ? trace_hardirqs_on+0x10/0x10 [ 1003.018445] ? __blkdev_put+0x6a0/0x6a0 [ 1003.022501] blkdev_get+0x84/0x8a0 [ 1003.026051] ? bd_may_claim+0xd0/0xd0 [ 1003.029858] ? lock_downgrade+0x6e0/0x6e0 [ 1003.034594] ? inode_has_perm.isra.0+0x1d0/0x1d0 [ 1003.039737] ? do_raw_spin_unlock+0x164/0x250 [ 1003.044561] ? _raw_spin_unlock+0x29/0x40 [ 1003.048887] blkdev_open+0x1cc/0x250 [ 1003.052940] ? security_file_open+0x82/0x190 [ 1003.057382] do_dentry_open+0x732/0xe90 [ 1003.061565] ? bd_acquire+0x2c0/0x2c0 [ 1003.065392] ? __inode_permission+0x7c/0x300 [ 1003.070189] vfs_open+0x105/0x220 [ 1003.073801] path_openat+0x8ca/0x3c50 [ 1003.077617] ? path_lookupat.isra.0+0x7b0/0x7b0 [ 1003.082643] do_filp_open+0x18e/0x250 [ 1003.086567] ? may_open_dev+0xe0/0xe0 [ 1003.090448] ? lock_downgrade+0x6e0/0x6e0 [ 1003.094849] ? do_raw_spin_unlock+0x164/0x250 [ 1003.099345] ? __alloc_fd+0x1bf/0x490 [ 1003.103561] do_sys_open+0x29d/0x3f0 [ 1003.107292] ? filp_open+0x60/0x60 [ 1003.111338] ? __do_page_fault+0x35b/0xb40 [ 1003.115603] ? do_syscall_64+0x4c/0x640 [ 1003.119583] ? do_sys_open+0x3f0/0x3f0 [ 1003.123668] do_syscall_64+0x1d5/0x640 [ 1003.127573] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1003.133132] RIP: 0033:0x7f12ea021120 [ 1003.137034] RSP: 002b:00007ffc3106ba78 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 1003.144807] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f12ea021120 [ 1003.152389] RDX: 00007ffc3106cf41 RSI: 0000000000000000 RDI: 00007ffc3106cf41 [ 1003.159932] RBP: 0000000000000000 R08: 0000000000000078 R09: 0000000000000000 [ 1003.167539] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000017e1030 [ 1003.174852] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005 [ 1003.182471] INFO: task blkid:7527 blocked for more than 140 seconds. [ 1003.189156] Not tainted 4.14.172-syzkaller #0 [ 1003.194419] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1003.202432] blkid D29200 7527 7513 0x00000004 [ 1003.208328] Call Trace: [ 1003.210979] ? __schedule+0x7b8/0x1ca0 [ 1003.215015] ? __mutex_lock+0x737/0x1470 [ 1003.219296] ? __sched_text_start+0x8/0x8 [ 1003.223660] ? lock_downgrade+0x6e0/0x6e0 [ 1003.228177] schedule+0x8d/0x1b0 [ 1003.231802] schedule_preempt_disabled+0xf/0x20 [ 1003.236606] __mutex_lock+0x73c/0x1470 [ 1003.240742] ? __blkdev_get+0x131/0x10d0 [ 1003.245055] ? lo_open+0x19/0xb0 [ 1003.248693] ? mutex_trylock+0x1a0/0x1a0 [ 1003.253291] ? get_disk+0xd0/0xd0 [ 1003.257712] ? kobj_lookup+0x320/0x410 [ 1003.262027] ? blkdev_ioctl+0x17d0/0x17d0 [ 1003.266438] ? loop_unregister_transfer+0x90/0x90 [ 1003.271497] ? lo_open+0x19/0xb0 [ 1003.274971] lo_open+0x19/0xb0 [ 1003.278160] __blkdev_get+0xa70/0x10d0 [ 1003.282108] ? trace_hardirqs_on+0x10/0x10 [ 1003.286806] ? __blkdev_put+0x6a0/0x6a0 [ 1003.291011] blkdev_get+0x84/0x8a0 [ 1003.294693] ? bd_may_claim+0xd0/0xd0 [ 1003.298636] ? lock_downgrade+0x6e0/0x6e0 [ 1003.302997] ? inode_has_perm.isra.0+0x1d0/0x1d0 [ 1003.307856] ? do_raw_spin_unlock+0x164/0x250 [ 1003.312410] ? _raw_spin_unlock+0x29/0x40 [ 1003.316901] blkdev_open+0x1cc/0x250 [ 1003.320985] ? security_file_open+0x82/0x190 [ 1003.325596] do_dentry_open+0x732/0xe90 [ 1003.329588] ? bd_acquire+0x2c0/0x2c0 [ 1003.333449] ? __inode_permission+0x7c/0x300 [ 1003.338027] vfs_open+0x105/0x220 [ 1003.341543] path_openat+0x8ca/0x3c50 [ 1003.345369] ? path_lookupat.isra.0+0x7b0/0x7b0 [ 1003.350130] do_filp_open+0x18e/0x250 [ 1003.353952] ? may_open_dev+0xe0/0xe0 [ 1003.357754] ? lock_downgrade+0x6e0/0x6e0 [ 1003.362267] ? do_raw_spin_unlock+0x164/0x250 [ 1003.366974] ? __alloc_fd+0x1bf/0x490 [ 1003.370961] do_sys_open+0x29d/0x3f0 [ 1003.374690] ? filp_open+0x60/0x60 [ 1003.378465] ? __do_page_fault+0x35b/0xb40 [ 1003.383077] ? do_syscall_64+0x4c/0x640 [ 1003.387068] ? do_sys_open+0x3f0/0x3f0 [ 1003.391153] do_syscall_64+0x1d5/0x640 [ 1003.395064] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1003.400484] RIP: 0033:0x7f3b61993120 [ 1003.404223] RSP: 002b:00007fff489797b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 1003.412013] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3b61993120 [ 1003.419612] RDX: 00007fff4897bf34 RSI: 0000000000000000 RDI: 00007fff4897bf34 [ 1003.427212] RBP: 0000000000000000 R08: 0000000000000078 R09: 0000000000000000 [ 1003.434744] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000007e7030 [ 1003.442184] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005 [ 1003.449683] INFO: task blkid:7528 blocked for more than 140 seconds. [ 1003.456549] Not tainted 4.14.172-syzkaller #0 [ 1003.461727] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1003.469898] blkid D29200 7528 7501 0x00000004 [ 1003.475881] Call Trace: [ 1003.478484] ? __schedule+0x7b8/0x1ca0 [ 1003.482422] ? __mutex_lock+0x737/0x1470 [ 1003.486766] ? __sched_text_start+0x8/0x8 [ 1003.491149] ? lock_downgrade+0x6e0/0x6e0 [ 1003.495520] schedule+0x8d/0x1b0 [ 1003.498886] schedule_preempt_disabled+0xf/0x20 [ 1003.503859] __mutex_lock+0x73c/0x1470 [ 1003.507766] ? _raw_spin_unlock+0x29/0x40 [ 1003.512110] ? lo_open+0x19/0xb0 [ 1003.516038] ? mutex_trylock+0x1a0/0x1a0 [ 1003.520170] ? get_disk+0xd0/0xd0 [ 1003.523631] ? kobj_lookup+0x320/0x410 [ 1003.527628] ? loop_unregister_transfer+0x90/0x90 [ 1003.532855] ? lo_open+0x19/0xb0 [ 1003.536515] lo_open+0x19/0xb0 [ 1003.539705] __blkdev_get+0xa70/0x10d0 [ 1003.543856] ? trace_hardirqs_on+0x10/0x10 [ 1003.548119] ? __blkdev_put+0x6a0/0x6a0 [ 1003.552552] blkdev_get+0x84/0x8a0 [ 1003.556130] ? bd_may_claim+0xd0/0xd0 [ 1003.559929] ? lock_downgrade+0x6e0/0x6e0 [ 1003.564348] ? inode_has_perm.isra.0+0x1d0/0x1d0 [ 1003.569481] ? do_raw_spin_unlock+0x164/0x250 [ 1003.574037] ? _raw_spin_unlock+0x29/0x40 [ 1003.578327] blkdev_open+0x1cc/0x250 [ 1003.582098] ? security_file_open+0x82/0x190 [ 1003.586517] do_dentry_open+0x732/0xe90 [ 1003.590664] ? bd_acquire+0x2c0/0x2c0 [ 1003.594560] ? __inode_permission+0x7c/0x300 [ 1003.599087] vfs_open+0x105/0x220 [ 1003.603070] path_openat+0x8ca/0x3c50 [ 1003.606889] ? path_lookupat.isra.0+0x7b0/0x7b0 [ 1003.611823] do_filp_open+0x18e/0x250 [ 1003.615810] ? may_open_dev+0xe0/0xe0 [ 1003.619763] ? lock_downgrade+0x6e0/0x6e0 [ 1003.624015] ? do_raw_spin_unlock+0x164/0x250 [ 1003.628566] ? __alloc_fd+0x1bf/0x490 [ 1003.632422] do_sys_open+0x29d/0x3f0 [ 1003.636412] ? filp_open+0x60/0x60 [ 1003.639945] ? __do_page_fault+0x35b/0xb40 [ 1003.644249] ? do_syscall_64+0x4c/0x640 [ 1003.648312] ? do_sys_open+0x3f0/0x3f0 [ 1003.652255] do_syscall_64+0x1d5/0x640 [ 1003.656162] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1003.661523] RIP: 0033:0x7f49a9a84120 [ 1003.665411] RSP: 002b:00007ffcdcc67598 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 1003.673309] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f49a9a84120 [ 1003.680774] RDX: 00007ffcdcc68f41 RSI: 0000000000000000 RDI: 00007ffcdcc68f41 [ 1003.688053] RBP: 0000000000000000 R08: 0000000000000078 R09: 0000000000000000 [ 1003.695623] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000015e8030 [ 1003.703143] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005 [ 1003.710979] INFO: task blkid:7532 blocked for more than 140 seconds. [ 1003.717566] Not tainted 4.14.172-syzkaller #0 [ 1003.722788] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1003.731094] blkid D28272 7532 7503 0x00000004 [ 1003.736741] Call Trace: [ 1003.739492] ? __schedule+0x7b8/0x1ca0 [ 1003.743608] ? __mutex_lock+0x737/0x1470 [ 1003.747682] ? __sched_text_start+0x8/0x8 [ 1003.752059] ? lock_downgrade+0x6e0/0x6e0 [ 1003.757444] schedule+0x8d/0x1b0 [ 1003.761009] schedule_preempt_disabled+0xf/0x20 [ 1003.765696] __mutex_lock+0x73c/0x1470 [ 1003.769792] ? __blkdev_get+0x131/0x10d0 [ 1003.773908] ? lo_open+0x19/0xb0 [ 1003.777293] ? mutex_trylock+0x1a0/0x1a0 [ 1003.781396] ? get_disk+0xd0/0xd0 [ 1003.784856] ? exact_match+0x9/0x20 [ 1003.788792] ? kobj_lookup+0x320/0x410 [ 1003.792731] ? blkdev_ioctl+0x17d0/0x17d0 [ 1003.797041] ? loop_unregister_transfer+0x90/0x90 [ 1003.802158] ? lo_open+0x19/0xb0 [ 1003.805538] lo_open+0x19/0xb0 [ 1003.808732] __blkdev_get+0xa70/0x10d0 [ 1003.812669] ? trace_hardirqs_on+0x10/0x10 [ 1003.816916] ? __blkdev_put+0x6a0/0x6a0 [ 1003.820989] blkdev_get+0x84/0x8a0 [ 1003.824685] ? bd_may_claim+0xd0/0xd0 [ 1003.828481] ? lock_downgrade+0x6e0/0x6e0 [ 1003.832713] ? inode_has_perm.isra.0+0x1d0/0x1d0 [ 1003.837477] ? do_raw_spin_unlock+0x164/0x250 [ 1003.842016] ? _raw_spin_unlock+0x29/0x40 [ 1003.846178] blkdev_open+0x1cc/0x250 [ 1003.850141] ? security_file_open+0x82/0x190 [ 1003.854562] do_dentry_open+0x732/0xe90 [ 1003.858547] ? bd_acquire+0x2c0/0x2c0 [ 1003.862403] ? __inode_permission+0x7c/0x300 [ 1003.866820] vfs_open+0x105/0x220 [ 1003.870314] path_openat+0x8ca/0x3c50 [ 1003.874207] ? path_lookupat.isra.0+0x7b0/0x7b0 [ 1003.878880] do_filp_open+0x18e/0x250 [ 1003.882784] ? may_open_dev+0xe0/0xe0 [ 1003.886601] ? lock_downgrade+0x6e0/0x6e0 [ 1003.890796] ? do_raw_spin_unlock+0x164/0x250 [ 1003.895331] ? __alloc_fd+0x1bf/0x490 [ 1003.899167] do_sys_open+0x29d/0x3f0 [ 1003.902936] ? filp_open+0x60/0x60 [ 1003.906685] ? __do_page_fault+0x35b/0xb40 [ 1003.911039] ? do_syscall_64+0x4c/0x640 [ 1003.915025] ? do_sys_open+0x3f0/0x3f0 [ 1003.918907] do_syscall_64+0x1d5/0x640 [ 1003.922847] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1003.928047] RIP: 0033:0x7f6511807120 [ 1003.931932] RSP: 002b:00007ffd7cb03a58 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 1003.939687] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6511807120 [ 1003.947035] RDX: 00007ffd7cb05f41 RSI: 0000000000000000 RDI: 00007ffd7cb05f41 [ 1003.954699] RBP: 0000000000000000 R08: 0000000000000078 R09: 0000000000000000 [ 1003.962146] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000758030 [ 1003.970928] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005 [ 1003.978477] [ 1003.978477] Showing all locks held in the system: [ 1003.984866] 1 lock held by khungtaskd/1054: [ 1003.989268] #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a [ 1003.998366] 2 locks held by getty/7464: [ 1004.002385] #0: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref_wait+0x22/0x80 [ 1004.011448] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e4/0x16f0 [ 1004.020905] 2 locks held by getty/7465: [ 1004.024983] #0: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref_wait+0x22/0x80 [ 1004.033976] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e4/0x16f0 [ 1004.043329] 2 locks held by getty/7466: [ 1004.047288] #0: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref_wait+0x22/0x80 [ 1004.061318] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e4/0x16f0 [ 1004.070671] 2 locks held by getty/7467: [ 1004.074643] #0: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref_wait+0x22/0x80 [ 1004.083616] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e4/0x16f0 [ 1004.092970] 2 locks held by getty/7468: [ 1004.096929] #0: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref_wait+0x22/0x80 [ 1004.105892] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e4/0x16f0 [ 1004.115233] 2 locks held by getty/7469: [ 1004.119196] #0: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref_wait+0x22/0x80 [ 1004.128172] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e4/0x16f0 [ 1004.137497] 2 locks held by getty/7470: [ 1004.141498] #0: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref_wait+0x22/0x80 [ 1004.150525] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e4/0x16f0 [ 1004.159843] 2 locks held by syz-executor848/7517: [ 1004.164741] #0: (loop_index_mutex){+.+.}, at: [] loop_control_ioctl+0x61/0x2d0 [ 1004.173957] #1: (&lo->lo_ctl_mutex#2){+.+.}, at: [] loop_control_ioctl+0x15b/0x2d0 [ 1004.183455] 2 locks held by syz-executor848/7519: [ 1004.188287] #0: (&lo->lo_ctl_mutex/1){+.+.}, at: [] lo_ioctl+0x87/0x1c40 [ 1004.196922] #1: (&bdev->bd_mutex){+.+.}, at: [] blkdev_reread_part+0x1b/0x40 [ 1004.205918] 2 locks held by syz-executor848/7520: [ 1004.210800] #0: (&lo->lo_ctl_mutex/1){+.+.}, at: [] lo_ioctl+0x87/0x1c40 [ 1004.219409] #1: (&bdev->bd_mutex){+.+.}, at: [] blkdev_reread_part+0x1b/0x40 [ 1004.228452] 2 locks held by syz-executor848/7521: [ 1004.233317] #0: (&lo->lo_ctl_mutex/1){+.+.}, at: [] lo_ioctl+0x87/0x1c40 [ 1004.241959] #1: (&bdev->bd_mutex){+.+.}, at: [] blkdev_reread_part+0x1b/0x40 [ 1004.251061] 2 locks held by syz-executor848/7522: [ 1004.255907] #0: (&lo->lo_ctl_mutex/1){+.+.}, at: [] lo_ioctl+0x87/0x1c40 [ 1004.264547] #1: (&bdev->bd_mutex){+.+.}, at: [] blkdev_reread_part+0x1b/0x40 [ 1004.273526] 2 locks held by syz-executor848/7523: [ 1004.278351] #0: (&lo->lo_ctl_mutex/1){+.+.}, at: [] lo_ioctl+0x87/0x1c40 [ 1004.286971] #1: (&bdev->bd_mutex){+.+.}, at: [] blkdev_reread_part+0x1b/0x40 [ 1004.295972] 2 locks held by blkid/7526: [ 1004.299948] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x131/0x10d0 [ 1004.308694] #1: (loop_index_mutex){+.+.}, at: [] lo_open+0x19/0xb0 [ 1004.316824] 2 locks held by blkid/7527: [ 1004.321016] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x131/0x10d0 [ 1004.329725] #1: (loop_index_mutex){+.+.}, at: [] lo_open+0x19/0xb0 [ 1004.337877] 2 locks held by blkid/7528: [ 1004.341925] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x131/0x10d0 [ 1004.350637] #1: (loop_index_mutex){+.+.}, at: [] lo_open+0x19/0xb0 [ 1004.358705] 2 locks held by blkid/7532: [ 1004.362703] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x131/0x10d0 [ 1004.371434] #1: (loop_index_mutex){+.+.}, at: [] lo_open+0x19/0xb0 [ 1004.379505] 2 locks held by blkid/7536: [ 1004.383509] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x131/0x10d0 [ 1004.392238] #1: (loop_index_mutex){+.+.}, at: [] lo_open+0x19/0xb0 [ 1004.400338] 2 locks held by blkid/7537: [ 1004.404329] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x131/0x10d0 [ 1004.413162] #1: (loop_index_mutex){+.+.}, at: [] lo_open+0x19/0xb0 [ 1004.421269] [ 1004.422883] ============================================= [ 1004.422883] [ 1004.429936] NMI backtrace for cpu 1 [ 1004.433628] CPU: 1 PID: 1054 Comm: khungtaskd Not tainted 4.14.172-syzkaller #0 [ 1004.441095] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1004.450425] Call Trace: [ 1004.452998] dump_stack+0x13e/0x194 [ 1004.456605] nmi_cpu_backtrace.cold+0x57/0x93 [ 1004.461135] ? irq_force_complete_move.cold+0x7b/0x7b [ 1004.466305] nmi_trigger_cpumask_backtrace+0x139/0x17e [ 1004.471630] watchdog+0x5e2/0xb80 [ 1004.475067] ? hungtask_pm_notify+0x50/0x50 [ 1004.479457] kthread+0x30d/0x420 [ 1004.482814] ? kthread_create_on_node+0xd0/0xd0 [ 1004.487471] ret_from_fork+0x24/0x30 [ 1004.491301] Sending NMI from CPU 1 to CPUs 0: [ 1004.495845] NMI backtrace for cpu 0 skipped: idling at pc 0xffffffff86401cbe [ 1004.497347] Kernel panic - not syncing: hung_task: blocked tasks [ 1004.509231] CPU: 1 PID: 1054 Comm: khungtaskd Not tainted 4.14.172-syzkaller #0 [ 1004.516806] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1004.526148] Call Trace: [ 1004.528728] dump_stack+0x13e/0x194 [ 1004.532402] panic+0x1f9/0x42d [ 1004.535576] ? add_taint.cold+0x16/0x16 [ 1004.539566] ? irq_force_complete_move.cold+0x7b/0x7b [ 1004.544778] watchdog+0x5f3/0xb80 [ 1004.548222] ? hungtask_pm_notify+0x50/0x50 [ 1004.552530] kthread+0x30d/0x420 [ 1004.555893] ? kthread_create_on_node+0xd0/0xd0 [ 1004.560546] ret_from_fork+0x24/0x30 [ 1004.565705] Kernel Offset: disabled [ 1004.569334] Rebooting in 86400 seconds..