[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 10.641171] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 25.978925] random: sshd: uninitialized urandom read (32 bytes read) [ 26.203019] audit: type=1400 audit(1563765032.959:6): avc: denied { map } for pid=1761 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [ 26.249961] random: sshd: uninitialized urandom read (32 bytes read) [ 26.776774] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.34' (ECDSA) to the list of known hosts. [ 32.496417] urandom_read: 1 callbacks suppressed [ 32.496421] random: sshd: uninitialized urandom read (32 bytes read) [ 32.593084] audit: type=1400 audit(1563765039.349:7): avc: denied { map } for pid=1779 comm="syz-executor010" path="/root/syz-executor010130046" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 32.594974] ------------[ cut here ]------------ [ 32.624172] WARNING: CPU: 1 PID: 1779 at mm/page_alloc.c:4188 __alloc_pages_nodemask+0x3d5/0x2370 [ 32.633215] Kernel panic - not syncing: panic_on_warn set ... [ 32.633215] [ 32.640575] CPU: 1 PID: 1779 Comm: syz-executor010 Not tainted 4.14.133+ #17 [ 32.647778] Call Trace: [ 32.650376] dump_stack+0xca/0x134 [ 32.653910] panic+0x1ea/0x3d3 [ 32.657085] ? add_taint.cold+0x16/0x16 [ 32.661088] ? __alloc_pages_nodemask+0x3d5/0x2370 [ 32.666099] ? __probe_kernel_read+0x163/0x1c0 [ 32.670673] ? __alloc_pages_nodemask+0x3d5/0x2370 [ 32.675581] __warn.cold+0x2f/0x3a [ 32.679169] ? __alloc_pages_nodemask+0x3d5/0x2370 [ 32.684092] ? report_bug+0x20a/0x248 [ 32.687924] ? do_error_trap+0x1bf/0x2d0 [ 32.691974] ? math_error+0x2d0/0x2d0 [ 32.695753] ? trace_hardirqs_on_caller+0x37b/0x540 [ 32.700757] ? __lock_acquire+0x5dc/0x42e0 [ 32.704981] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.709807] ? invalid_op+0x18/0x40 [ 32.713430] ? __alloc_pages_nodemask+0x3d5/0x2370 [ 32.718453] ? lock_acquire+0x12b/0x360 [ 32.722423] ? uinput_ioctl_handler.isra.0+0xa6/0x1850 [ 32.727823] ? gfp_pfmemalloc_allowed+0x150/0x150 [ 32.732745] ? avc_has_extended_perms+0x5e0/0xc20 [ 32.737567] ? lock_downgrade+0x5d0/0x5d0 [ 32.741694] ? avc_has_extended_perms+0xd0/0xc20 [ 32.746437] ? check_preemption_disabled+0x35/0x1f0 [ 32.751444] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 32.756929] ? kmalloc_order+0x1e/0x50 [ 32.760887] ? kmalloc_order_trace+0x17/0x160 [ 32.765375] ? input_mt_init_slots+0xca/0x3f0 [ 32.769856] ? uinput_ioctl_handler.isra.0+0x13df/0x1850 [ 32.775314] ? uinput_request_submit.part.0+0x280/0x280 [ 32.780674] ? debug_check_no_obj_freed+0x2a9/0x5c0 [ 32.785681] ? debug_check_no_obj_freed+0x148/0x5c0 [ 32.790686] ? _raw_spin_unlock_irqrestore+0x54/0x70 [ 32.795814] ? trace_hardirqs_on_caller+0x37b/0x540 [ 32.800865] ? uinput_compat_ioctl+0x90/0x90 [ 32.805262] ? do_vfs_ioctl+0xabe/0x1040 [ 32.809306] ? selinux_file_ioctl+0x426/0x590 [ 32.813892] ? selinux_file_ioctl+0x116/0x590 [ 32.818376] ? ioctl_preallocate+0x1e0/0x1e0 [ 32.822768] ? selinux_socket_sock_rcv_skb+0x610/0x610 [ 32.828133] ? rcu_read_lock_sched_held+0x10a/0x130 [ 32.833544] ? putname+0xcd/0x110 [ 32.836987] ? do_sys_open+0x255/0x590 [ 32.840918] ? filp_open+0x60/0x60 [ 32.844449] ? security_file_ioctl+0x7c/0xb0 [ 32.848952] ? SyS_ioctl+0x7f/0xb0 [ 32.852481] ? do_vfs_ioctl+0x1040/0x1040 [ 32.856653] ? do_syscall_64+0x19b/0x520 [ 32.860706] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 32.866492] Kernel Offset: 0x36000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 32.877471] Rebooting in 86400 seconds..