[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 12.829962] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 16.068688] random: sshd: uninitialized urandom read (32 bytes read) [ 16.315795] random: sshd: uninitialized urandom read (32 bytes read) [ 17.177764] random: sshd: uninitialized urandom read (32 bytes read) [ 17.308074] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.7' (ECDSA) to the list of known hosts. [ 22.753481] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 26.986669] ------------[ cut here ]------------ [ 26.991564] WARNING: CPU: 0 PID: 5656 at lib/list_debug.c:59 __list_del_entry+0x148/0x1c0 [ 27.000072] list_del corruption. prev->next should be ffff8801d9488028, but was ffff8801c255fb88 [ 27.009081] Kernel panic - not syncing: panic_on_warn set ... [ 27.009081] [ 27.017165] CPU: 0 PID: 5656 Comm: syz-executor526 Not tainted 4.9.111-g03c70fe #58 [ 27.025816] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.035177] ffff8801d914f450 ffffffff81eb2729 ffffffff83c48980 00000000ffffffff [ 27.043236] 0000000000000000 0000000000000000 000000000000003b ffff8801d914f510 [ 27.051281] ffffffff814219f5 0000000041b58ab3 ffffffff843ba8c0 ffffffff81421836 [ 27.059343] Call Trace: [ 27.061906] [] dump_stack+0xc1/0x128 [ 27.067257] [] panic+0x1bf/0x3bc [ 27.072268] [] ? add_taint.cold.6+0x16/0x16 [ 27.078216] [] ? __warn.cold.9+0xa6/0x17f [ 27.083989] [] ? __list_del_entry+0x148/0x1c0 [ 27.090112] [] __warn.cold.9+0xc1/0x17f [ 27.096330] [] warn_slowpath_fmt+0xc2/0x100 [ 27.102306] [] ? __warn+0x50/0x50 [ 27.107398] [] ? _raw_spin_unlock_irqrestore+0x5a/0x70 [ 27.114311] [] ? p9_fd_cancel+0x1c/0xb0 [ 27.119924] [] __list_del_entry+0x148/0x1c0 [ 27.125879] [] list_del+0xd/0x70 [ 27.130966] [] p9_fd_cancel+0x69/0xb0 [ 27.136405] [] p9_client_rpc+0x9e1/0x1140 [ 27.142195] [] ? trace_event_raw_event_9p_client_res+0x270/0x270 [ 27.149971] [] ? add_wait_queue+0x76/0xa0 [ 27.155760] [] ? p9_pollwait+0x83/0x210 [ 27.161368] [] ? p9_conn_create+0x4c0/0x4c0 [ 27.167325] [] ? pipe_poll+0x25c/0x2d0 [ 27.172837] [] ? generic_pipe_buf_confirm+0x10/0x10 [ 27.179487] [] ? p9_fd_poll+0x246/0x310 [ 27.185087] [] ? lockdep_init_map+0x105/0x4f0 [ 27.191214] [] ? prepare_to_wait_event+0x450/0x450 [ 27.197770] [] ? p9_conn_create+0x3c0/0x4c0 [ 27.203715] [] ? parse_opts.part.1+0x320/0x320 [ 27.209938] [] ? __raw_spin_lock_init+0x2d/0x100 [ 27.216332] [] p9_client_create+0x951/0x10a0 [ 27.222389] [] ? p9_client_zc_rpc.constprop.11+0x1020/0x1020 [ 27.229914] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 27.236744] [] ? bdi_register+0xb4/0x570 [ 27.242437] [] ? bdi_init+0x7ae/0xab0 [ 27.247870] [] v9fs_session_init+0x333/0x13a0 [ 27.254008] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 27.261010] [] ? debug_check_no_obj_freed+0x2ec/0x930 [ 27.267830] [] ? v9fs_inode_init_once+0x30/0x30 [ 27.274132] [] ? debug_object_activate+0x4e0/0x4e0 [ 27.280690] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 27.287512] [] ? free_hot_cold_page+0x493/0x840 [ 27.293822] [] ? check_preemption_disabled+0x3b/0x170 [ 27.300647] [] ? kasan_unpoison_shadow+0x35/0x50 [ 27.307031] [] ? kasan_kmalloc+0xc7/0xe0 [ 27.312732] [] ? kmem_cache_alloc_trace+0xfd/0x2b0 [ 27.319294] [] ? v9fs_mount+0x62/0x810 [ 27.324815] [] v9fs_mount+0x7d/0x810 [ 27.330162] [] mount_fs+0x28c/0x370 [ 27.335413] [] vfs_kern_mount.part.29+0xd1/0x3d0 [ 27.341820] [] ? ns_capable_common+0x12a/0x150 [ 27.348032] [] do_mount+0x3c9/0x2740 [ 27.353373] [] ? copy_mount_string+0x40/0x40 [ 27.359411] [] ? kasan_unpoison_shadow+0x35/0x50 [ 27.365798] [] ? kasan_kmalloc+0xc7/0xe0 [ 27.371497] [] ? kmem_cache_alloc_trace+0xfd/0x2b0 [ 27.378056] [] ? copy_mount_options+0x5f/0x320 [ 27.384265] [] ? copy_mount_options+0x1e5/0x320 [ 27.390562] [] SyS_mount+0xfe/0x110 [ 27.395833] [] ? copy_mnt_ns+0x8e0/0x8e0 [ 27.401536] [] do_syscall_64+0x1a6/0x490 [ 27.407233] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 27.414755] Dumping ftrace buffer: [ 27.418368] (ftrace buffer empty) [ 27.422054] Kernel Offset: disabled [ 27.425937] Rebooting in 86400 seconds..