[....] Starting OpenBSD Secure Shell server: sshd[ 11.525319] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. [ 12.187152] random: sshd: uninitialized urandom read (32 bytes read) [ 12.398700] audit: type=1400 audit(1570083209.659:6): avc: denied { map } for pid=1771 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 [ 12.436626] random: sshd: uninitialized urandom read (32 bytes read) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 12.959914] random: sshd: uninitialized urandom read (32 bytes read) [ 13.115590] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.39' (ECDSA) to the list of known hosts. [ 18.638993] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 18.733139] audit: type=1400 audit(1570083215.999:7): avc: denied { map } for pid=1783 comm="syz-executor715" path="/root/syz-executor715178697" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 18.735335] ------------[ cut here ]------------ [ 18.764467] WARNING: CPU: 0 PID: 1783 at mm/page_alloc.c:4245 __alloc_pages_nodemask+0x3d5/0x2370 [ 18.773503] Kernel panic - not syncing: panic_on_warn set ... [ 18.773503] [ 18.780844] CPU: 0 PID: 1783 Comm: syz-executor715 Not tainted 4.14.146+ #0 [ 18.788038] Call Trace: [ 18.790743] dump_stack+0xca/0x134 [ 18.794318] panic+0x1ea/0x3d3 [ 18.797500] ? add_taint.cold+0x16/0x16 [ 18.801482] ? __alloc_pages_nodemask+0x3d5/0x2370 [ 18.806403] ? __probe_kernel_read+0x163/0x1c0 [ 18.810971] ? __alloc_pages_nodemask+0x3d5/0x2370 [ 18.815879] __warn.cold+0x2f/0x3a [ 18.819414] ? __alloc_pages_nodemask+0x3d5/0x2370 [ 18.824324] report_bug+0x20a/0x248 [ 18.827931] do_error_trap+0x1bf/0x2d0 [ 18.831795] ? math_error+0x2d0/0x2d0 [ 18.835576] ? trace_hardirqs_on_caller+0x37b/0x540 [ 18.840583] ? __lock_acquire+0x5d7/0x4320 [ 18.844823] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 18.849648] invalid_op+0x18/0x40 [ 18.853079] RIP: 0010:__alloc_pages_nodemask+0x3d5/0x2370 [ 18.858592] RSP: 0018:ffff8881d0147938 EFLAGS: 00010246 [ 18.863935] RAX: 0000000000000000 RBX: 1ffff1103a028f3b RCX: 0000000000000000 [ 18.871381] RDX: 0000000000000000 RSI: 000000000000000b RDI: 0000000000000000 [ 18.878635] RBP: 0000000000400020 R08: 0000000000007d06 R09: ffffed103a167512 [ 18.885884] R10: ffff8881d0147bc8 R11: ffff8881d0b3a88f R12: 000000000140c0c0 [ 18.893135] R13: 0000000000000000 R14: ffff8881d00e2a80 R15: ffff8881d00e2aa8 [ 18.900419] ? lock_acquire+0x12b/0x360 [ 18.904377] ? uinput_ioctl_handler.isra.0+0xa6/0x1850 [ 18.909637] ? gfp_pfmemalloc_allowed+0x150/0x150 [ 18.914478] ? avc_has_extended_perms+0x5e0/0xc20 [ 18.919306] ? lock_downgrade+0x5d0/0x5d0 [ 18.923449] ? avc_has_extended_perms+0xd0/0xc20 [ 18.928185] ? check_preemption_disabled+0x35/0x1f0 [ 18.933195] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 18.938635] kmalloc_order+0x1e/0x50 [ 18.942333] kmalloc_order_trace+0x17/0x160 [ 18.946648] input_mt_init_slots+0xca/0x3f0 [ 18.950977] uinput_ioctl_handler.isra.0+0x13df/0x1850 [ 18.956239] ? uinput_request_submit.part.0+0x280/0x280 [ 18.961590] ? debug_check_no_obj_freed+0x2a9/0x5c0 [ 18.966592] ? debug_check_no_obj_freed+0x148/0x5c0 [ 18.971592] ? _raw_spin_unlock_irqrestore+0x54/0x70 [ 18.976677] ? trace_hardirqs_on_caller+0x37b/0x540 [ 18.981680] ? uinput_compat_ioctl+0x90/0x90 [ 18.986074] do_vfs_ioctl+0xabe/0x1040 [ 18.989947] ? selinux_file_ioctl+0x426/0x590 [ 18.994422] ? selinux_file_ioctl+0x116/0x590 [ 18.998919] ? ioctl_preallocate+0x1e0/0x1e0 [ 19.003312] ? selinux_socket_sock_rcv_skb+0x610/0x610 [ 19.008574] ? rcu_read_lock_sched_held+0x10a/0x130 [ 19.013578] ? putname+0xcd/0x110 [ 19.017014] ? do_sys_open+0x255/0x590 [ 19.020897] ? filp_open+0x60/0x60 [ 19.024422] ? security_file_ioctl+0x7c/0xb0 [ 19.028816] SyS_ioctl+0x7f/0xb0 [ 19.032177] ? do_vfs_ioctl+0x1040/0x1040 [ 19.036332] do_syscall_64+0x19b/0x520 [ 19.040221] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 19.045399] RIP: 0033:0x4402b9 [ 19.048570] RSP: 002b:00007ffcbdafbeb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 19.056265] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004402b9 [ 19.063518] RDX: 0000000000000000 RSI: 0000000000005501 RDI: 0000000000000003 [ 19.070770] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 19.078036] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000401b40 [ 19.086269] R13: 0000000000401bd0 R14: 0000000000000000 R15: 0000000000000000 [ 19.094587] Kernel Offset: 0x2a000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 19.105676] Rebooting in 86400 seconds..