[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 13.832544] random: sshd: uninitialized urandom read (32 bytes read, 31 bits of entropy available) [?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 29.731844] random: sshd: uninitialized urandom read (32 bytes read, 41 bits of entropy available) [ 30.277805] random: sshd: uninitialized urandom read (32 bytes read, 41 bits of entropy available) [ 30.817541] random: sshd: uninitialized urandom read (32 bytes read, 100 bits of entropy available) [ 30.962849] random: sshd: uninitialized urandom read (32 bytes read, 104 bits of entropy available) Warning: Permanently added 'ci-android-44-kasan-gce-3,10.128.15.210' (ECDSA) to the list of known hosts. [ 36.344780] random: sshd: uninitialized urandom read (32 bytes read, 112 bits of entropy available) executing program [ 36.424347] ------------[ cut here ]------------ [ 36.429117] WARNING: CPU: 1 PID: 3322 at net/packet/af_packet.c:4129 packet_set_ring+0x1212/0x17c0() [ 36.438746] Tx-ring is not supported. [ 36.442585] Kernel panic - not syncing: panic_on_warn set ... [ 36.442585] [ 36.449908] CPU: 1 PID: 3322 Comm: syzkaller226452 Not tainted 4.4.104-ged884eb #2 [ 36.457576] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.466894] 0000000000000000 615d5757f9690477 ffff8801d72cf958 ffffffff81cc9b0f [ 36.474829] ffffffff83842ac0 ffff8801d72cfa30 ffff8801d72cfa20 ffffffff813fc616 [ 36.482774] 0000000041b58ab3 ffffffff83fa5588 ffffffff813fc48f 0000000000000019 [ 36.490712] Call Trace: [ 36.493261] [] dump_stack+0x8e/0xcf [ 36.498500] [] panic+0x187/0x2f1 [ 36.503474] [] ? percpu_up_read.constprop.46+0xc3/0xc3 [ 36.510360] [] warn_slowpath_common+0x108/0x120 [ 36.516639] [] ? packet_set_ring+0x1212/0x17c0 [ 36.522828] [] warn_slowpath_fmt+0xa7/0xf0 [ 36.528673] [] ? warn_slowpath_common+0x120/0x120 [ 36.535127] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 36.541406] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 36.548207] [] ? lock_sock_nested+0x86/0x100 [ 36.554229] [] ? trace_hardirqs_on+0xd/0x10 [ 36.560162] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 36.566441] [] ? lock_sock_nested+0xcd/0x100 [ 36.572457] [] packet_set_ring+0x1212/0x17c0 [ 36.578475] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 36.585272] [] ? trace_hardirqs_on_thunk+0x17/0x19 [ 36.591810] [] ? packet_read_pending.isra.63.part.64+0x190/0x190 [ 36.599563] [] packet_setsockopt+0x552/0x2600 [ 36.605673] [] ? __lock_is_held+0xa1/0xf0 [ 36.611437] [] ? packet_poll+0x5a0/0x5a0 [ 36.617109] [] ? sock_has_perm+0x24a/0x390 [ 36.622953] [] ? sock_has_perm+0x99/0x390 [ 36.628710] [] ? handle_mm_fault+0xb02/0x39b0 [ 36.634815] [] ? selinux_file_send_sigiotask+0x2c0/0x2c0 [ 36.641874] [] ? _raw_spin_unlock+0x2c/0x50 [ 36.647902] [] ? selinux_netlbl_sock_rcv_skb+0x370/0x370 [ 36.654970] [] ? selinux_socket_setsockopt+0x56/0x70 [ 36.661685] [] SyS_setsockopt+0x142/0x250 [ 36.667441] [] ? SyS_recv+0x20/0x20 [ 36.672676] [] ? retint_user+0x18/0x20 [ 36.678174] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 36.684626] [] entry_SYSCALL_64_fastpath+0x16/0x76 [ 36.691274] Dumping ftrace buffer: [ 36.694802] (ftrace buffer empty) [ 36.698475] Kernel Offset: disabled [ 36.702079] Rebooting in 86400 seconds..