[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 20.350606] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. [ 21.438851] random: sshd: uninitialized urandom read (32 bytes read) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 21.725430] random: sshd: uninitialized urandom read (32 bytes read) [ 22.468082] random: sshd: uninitialized urandom read (32 bytes read) [ 24.792736] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.17' (ECDSA) to the list of known hosts. [ 30.282273] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program [ 30.386171] FAULT_INJECTION: forcing a failure. [ 30.386171] name failslab, interval 1, probability 0, space 0, times 1 [ 30.397552] CPU: 1 PID: 4509 Comm: syz-executor352 Not tainted 4.17.0-rc4+ #43 [ 30.404925] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.414281] Call Trace: [ 30.416869] dump_stack+0x1b9/0x294 [ 30.420485] ? dump_stack_print_info.cold.2+0x52/0x52 [ 30.425682] ? perf_trace_lock_acquire+0xe3/0x980 [ 30.430536] should_fail.cold.4+0xa/0x1a executing program [ 30.434594] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 30.439685] ? lock_release+0xa10/0xa10 [ 30.443647] ? graph_lock+0x170/0x170 [ 30.447434] ? rcu_note_context_switch+0x710/0x710 [ 30.452351] ? find_held_lock+0x36/0x1c0 [ 30.456401] ? __lock_is_held+0xb5/0x140 [ 30.460467] ? check_same_owner+0x320/0x320 [ 30.464777] ? rcu_note_context_switch+0x710/0x710 [ 30.469711] __should_failslab+0x124/0x180 [ 30.473940] should_failslab+0x9/0x14 [ 30.477728] kmem_cache_alloc+0x2af/0x760 [ 30.481862] ? kasan_check_write+0x14/0x20 executing program executing program [ 30.486081] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 30.491086] __kernfs_new_node+0xe7/0x580 [ 30.495221] ? kernfs_dop_revalidate+0x3c0/0x3c0 [ 30.499963] ? kasan_check_write+0x14/0x20 [ 30.504187] ? __mutex_unlock_slowpath+0x180/0x8a0 [ 30.509101] ? graph_lock+0x170/0x170 [ 30.512895] ? wait_for_completion+0x870/0x870 [ 30.517481] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 30.523004] kernfs_new_node+0x80/0xf0 [ 30.526889] __kernfs_create_file+0x4d/0x330 [ 30.531283] sysfs_add_file_mode_ns+0x21a/0x560 executing program [ 30.535943] sysfs_add_file+0x4e/0x60 [ 30.539735] sysfs_merge_group+0xfa/0x230 [ 30.543869] dpm_sysfs_add+0x161/0x210 [ 30.547756] device_add+0xa11/0x16d0 [ 30.551456] ? device_private_init+0x230/0x230 [ 30.556018] ? kfree+0x1e9/0x260 [ 30.559373] ? kfree_const+0x5e/0x70 [ 30.563071] device_create_groups_vargs+0x1ff/0x270 [ 30.568161] device_create_vargs+0x46/0x60 [ 30.572386] bdi_register_va.part.10+0xbb/0x9b0 [ 30.577038] ? __lockdep_init_map+0x105/0x590 [ 30.581526] ? cgwb_kill+0x630/0x630 executing program executing program [ 30.585224] ? lockdep_init_map+0x9/0x10 [ 30.589269] ? __init_waitqueue_head+0x96/0x140 [ 30.593920] ? init_wait_entry+0x1b0/0x1b0 [ 30.598141] ? __lockdep_init_map+0x105/0x590 [ 30.602734] ? pm_runtime_init+0x451/0x540 [ 30.606963] ? update_pm_runtime_accounting+0x1b0/0x1b0 [ 30.612320] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 30.617855] ? put_dec_trunc8+0x273/0x300 [ 30.621990] bdi_register+0x101/0x110 [ 30.625776] ? bdi_register_va+0x80/0x80 [ 30.629824] ? graph_lock+0x170/0x170 executing program executing program [ 30.633627] bdi_register_owner+0x5e/0x100 [ 30.637851] __device_add_disk+0xf07/0x1340 [ 30.642160] ? blk_alloc_devt+0x2a0/0x2a0 [ 30.646290] ? vsnprintf+0x242/0x1b40 [ 30.650099] ? pointer+0xa20/0xa20 [ 30.653623] ? __mutex_init+0x1ef/0x280 [ 30.657670] ? sprintf+0xa7/0xd0 [ 30.661030] ? scnprintf+0x120/0x120 [ 30.664730] ? __lockdep_init_map+0x105/0x590 [ 30.669217] device_add_disk+0x22/0x30 [ 30.673089] loop_add+0x70b/0x9c0 [ 30.676540] ? loop_queue_rq+0x640/0x640 [ 30.680585] ? module_unload_free+0x5b0/0x5b0 [ 30.685064] loop_probe+0x185/0x1c0 [ 30.688681] ? loop_control_ioctl+0x500/0x500 [ 30.693166] kobj_lookup+0x269/0x460 [ 30.696885] ? loop_control_ioctl+0x500/0x500 [ 30.701381] get_gendisk+0x4c/0x380 [ 30.704995] blkdev_get+0x16a/0xb30 [ 30.708607] ? kasan_check_write+0x14/0x20 [ 30.713696] ? do_raw_spin_lock+0xc1/0x200 [ 30.717914] ? bdget+0x5c0/0x5c0 [ 30.721263] ? mntput+0x74/0xa0 [ 30.724541] ? path_put+0x50/0x70 [ 30.727982] ? lookup_bdev+0xb4/0x240 [ 30.731772] ? blkdev_open+0x280/0x280 [ 30.735650] blkdev_get_by_path+0x5c/0xe0 [ 30.739784] mount_bdev+0x5d/0x3e0 [ 30.743307] ? fuse_get_root_inode+0x190/0x190 [ 30.747873] fuse_mount_blk+0x34/0x40 [ 30.751659] mount_fs+0xae/0x328 [ 30.755018] vfs_kern_mount.part.34+0xd4/0x4d0 [ 30.759592] ? may_umount+0xb0/0xb0 [ 30.763204] ? _raw_read_unlock+0x22/0x30 [ 30.767335] ? __get_fs_type+0x97/0xc0 [ 30.771211] do_mount+0x564/0x3070 [ 30.774735] ? copy_mount_string+0x40/0x40 [ 30.778955] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 30.783695] ? retint_kernel+0x10/0x10 [ 30.787666] ? copy_mount_options+0x213/0x380 [ 30.792146] ? __sanitizer_cov_trace_const_cmp4+0x11/0x20 [ 30.797670] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 30.803192] ? copy_mount_options+0x285/0x380 [ 30.807674] ksys_mount+0x12d/0x140 [ 30.811288] __x64_sys_mount+0xbe/0x150 [ 30.815246] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 30.820254] do_syscall_64+0x1b1/0x800 [ 30.824129] ? finish_task_switch+0x1ca/0x810 [ 30.828610] ? syscall_return_slowpath+0x5c0/0x5c0 [ 30.833525] ? syscall_return_slowpath+0x30f/0x5c0 [ 30.838441] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 30.843791] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.848621] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 30.853808] RIP: 0033:0x445a09 [ 30.856985] RSP: 002b:00007f2f55dcdc78 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 30.864677] RAX: ffffffffffffffda RBX: 00000000006dbc24 RCX: 0000000000445a09 [ 30.871927] RDX: 00000000004ae479 RSI: 0000000020000080 RDI: 00000000200000c0 [ 30.879189] RBP: 0000000000000005 R08: 00007f2f55dcdc90 R09: 0000000000000000 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 [ 30.886442] R10: 0000000000000000 R11: 0000000000000206 R12: 00007f2f55dcdc90 [ 30.893694] R13: 00000000006dbc20 R14: 0030656c69662f2e R15: 0000000000000004 [ 30.905041] WARNING: CPU: 1 PID: 4509 at block/genhd.c:697 __device_add_disk+0x104a/0x1340 [ 30.913444] Kernel panic - not syncing: panic_on_warn set ... [ 30.913444] [ 30.920905] CPU: 1 PID: 4509 Comm: syz-executor352 Not tainted 4.17.0-rc4+ #43 [ 30.928244] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.937578] Call Trace: [ 30.940163] dump_stack+0x1b9/0x294 [ 30.943775] ? dump_stack_print_info.cold.2+0x52/0x52 [ 30.948952] ? __device_add_disk+0xfb0/0x1340 [ 30.953432] panic+0x22f/0x4de [ 30.956608] ? add_taint.cold.5+0x16/0x16 [ 30.960747] ? __warn.cold.8+0x148/0x1b3 [ 30.964790] ? __warn.cold.8+0x117/0x1b3 [ 30.968838] ? __device_add_disk+0x104a/0x1340 [ 30.973401] __warn.cold.8+0x163/0x1b3 [ 30.977270] ? __device_add_disk+0x104a/0x1340 [ 30.981840] report_bug+0x252/0x2d0 [ 30.985457] do_error_trap+0x1de/0x490 [ 30.989328] ? init_wait_entry+0x1b0/0x1b0 [ 30.993551] ? math_error+0x420/0x420 [ 30.997340] ? __lockdep_init_map+0x105/0x590 [ 31.001823] ? pm_runtime_init+0x451/0x540 [ 31.006039] ? update_pm_runtime_accounting+0x1b0/0x1b0 [ 31.011389] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.016913] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.021742] do_invalid_op+0x1b/0x20 [ 31.025456] invalid_op+0x14/0x20 [ 31.029075] RIP: 0010:__device_add_disk+0x104a/0x1340 [ 31.034243] RSP: 0018:ffff8801b06af4e0 EFLAGS: 00010293 [ 31.039589] RAX: ffff8801acf62200 RBX: ffff8801ac8a3740 RCX: ffffffff83439063 [ 31.046841] RDX: 0000000000000000 RSI: ffffffff8343919a RDI: 0000000000000005 [ 31.054093] RBP: ffff8801b06af6b0 R08: ffff8801acf62200 R09: 0000000000000006 [ 31.061430] R10: ffff8801acf62200 R11: 0000000000000000 R12: 00000000fffffff4 [ 31.068690] R13: ffff8801b06af688 R14: ffff8801ac8a3ca0 R15: ffff8801ac8a3744 [ 31.075948] ? __device_add_disk+0xf13/0x1340 [ 31.080423] ? __device_add_disk+0x104a/0x1340 [ 31.084990] ? blk_alloc_devt+0x2a0/0x2a0 [ 31.089121] ? vsnprintf+0x242/0x1b40 [ 31.092908] ? pointer+0xa20/0xa20 [ 31.096427] ? __mutex_init+0x1ef/0x280 [ 31.100387] ? sprintf+0xa7/0xd0 [ 31.103737] ? scnprintf+0x120/0x120 [ 31.107432] ? __lockdep_init_map+0x105/0x590 [ 31.111909] device_add_disk+0x22/0x30 [ 31.115778] loop_add+0x70b/0x9c0 [ 31.119213] ? loop_queue_rq+0x640/0x640 [ 31.123254] ? module_unload_free+0x5b0/0x5b0 [ 31.127733] loop_probe+0x185/0x1c0 [ 31.131346] ? loop_control_ioctl+0x500/0x500 [ 31.135831] kobj_lookup+0x269/0x460 [ 31.139530] ? loop_control_ioctl+0x500/0x500 [ 31.144021] get_gendisk+0x4c/0x380 [ 31.147633] blkdev_get+0x16a/0xb30 [ 31.151243] ? kasan_check_write+0x14/0x20 [ 31.155462] ? do_raw_spin_lock+0xc1/0x200 [ 31.159689] ? bdget+0x5c0/0x5c0 [ 31.163037] ? mntput+0x74/0xa0 [ 31.166300] ? path_put+0x50/0x70 [ 31.169741] ? lookup_bdev+0xb4/0x240 [ 31.173524] ? blkdev_open+0x280/0x280 [ 31.177412] blkdev_get_by_path+0x5c/0xe0 [ 31.181545] mount_bdev+0x5d/0x3e0 [ 31.185071] ? fuse_get_root_inode+0x190/0x190 [ 31.189638] fuse_mount_blk+0x34/0x40 [ 31.193422] mount_fs+0xae/0x328 [ 31.196773] vfs_kern_mount.part.34+0xd4/0x4d0 [ 31.201343] ? may_umount+0xb0/0xb0 [ 31.204953] ? _raw_read_unlock+0x22/0x30 [ 31.209079] ? __get_fs_type+0x97/0xc0 [ 31.212951] do_mount+0x564/0x3070 [ 31.216573] ? copy_mount_string+0x40/0x40 [ 31.220802] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 31.225551] ? retint_kernel+0x10/0x10 [ 31.229424] ? copy_mount_options+0x213/0x380 [ 31.233915] ? __sanitizer_cov_trace_const_cmp4+0x11/0x20 [ 31.239437] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.244958] ? copy_mount_options+0x285/0x380 [ 31.249441] ksys_mount+0x12d/0x140 [ 31.253053] __x64_sys_mount+0xbe/0x150 [ 31.257019] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 31.262019] do_syscall_64+0x1b1/0x800 [ 31.266326] ? finish_task_switch+0x1ca/0x810 [ 31.270815] ? syscall_return_slowpath+0x5c0/0x5c0 [ 31.275725] ? syscall_return_slowpath+0x30f/0x5c0 [ 31.280639] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 31.285989] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.290824] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 31.295995] RIP: 0033:0x445a09 [ 31.299167] RSP: 002b:00007f2f55dcdc78 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 31.306858] RAX: ffffffffffffffda RBX: 00000000006dbc24 RCX: 0000000000445a09 [ 31.314108] RDX: 00000000004ae479 RSI: 0000000020000080 RDI: 00000000200000c0 [ 31.321361] RBP: 0000000000000005 R08: 00007f2f55dcdc90 R09: 0000000000000000 [ 31.328626] R10: 0000000000000000 R11: 0000000000000206 R12: 00007f2f55dcdc90 [ 31.335878] R13: 00000000006dbc20 R14: 0030656c69662f2e R15: 0000000000000004 [ 31.343694] Dumping ftrace buffer: [ 31.347327] (ftrace buffer empty) [ 31.351022] Kernel Offset: disabled [ 31.354636] Rebooting in 86400 seconds..