[ 16.450492] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available) [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 21.447642] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 21.876052] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 22.703878] random: sshd: uninitialized urandom read (32 bytes read, 103 bits of entropy available) [ 22.886606] random: sshd: uninitialized urandom read (32 bytes read, 107 bits of entropy available) Warning: Permanently added 'ci-android-44-kasan-gce-1,10.128.15.228' (ECDSA) to the list of known hosts. [ 28.282407] random: sshd: uninitialized urandom read (32 bytes read, 115 bits of entropy available) executing program [ 28.380983] ------------[ cut here ]------------ [ 28.386211] WARNING: CPU: 1 PID: 3323 at net/packet/af_packet.c:4122 packet_set_ring+0x1337/0x18d0() [ 28.395496] Tx-ring is not supported. [ 28.399350] Kernel panic - not syncing: panic_on_warn set ... [ 28.399350] [ 28.406685] CPU: 1 PID: 3323 Comm: syzkaller563204 Not tainted 4.4.107-g610c835 #12 [ 28.414443] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.423763] 0000000000000000 9232633acaef3ca0 ffff8800b5a3f938 ffffffff81d0457d [ 28.431700] ffffffff838429a0 ffff8800b5a3fa10 ffffffff83d1eaa0 0000000000000009 [ 28.439649] 000000000000101a ffff8800b5a3fa00 ffffffff8141774a 0000000041b58ab3 [ 28.447603] Call Trace: [ 28.450156] [] dump_stack+0xc1/0x124 [ 28.455487] [] panic+0x1aa/0x388 [ 28.460469] [] ? percpu_up_read.constprop.45+0xe1/0xe1 [ 28.467363] [] ? warn_slowpath_common+0x10a/0x140 [ 28.473817] [] warn_slowpath_common+0x125/0x140 [ 28.480105] [] ? packet_set_ring+0x1337/0x18d0 [ 28.486298] [] warn_slowpath_fmt+0xc1/0x110 [ 28.492231] [] ? warn_slowpath_common+0x140/0x140 [ 28.498687] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 28.505490] [] ? lock_sock_nested+0x90/0x120 [ 28.511512] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 28.517802] [] ? packet_set_ring+0x131f/0x18d0 [ 28.523995] [] packet_set_ring+0x1337/0x18d0 [ 28.530019] [] ? packet_read_pending.isra.63.part.64+0x190/0x190 [ 28.537777] [] ? check_stack_object+0x68/0x140 [ 28.543972] [] ? __check_object_size+0x154/0x35b [ 28.550339] [] packet_setsockopt+0x568/0x2270 [ 28.556452] [] ? packet_poll+0x5c0/0x5c0 [ 28.562132] [] ? sock_has_perm+0x292/0x3e0 [ 28.567985] [] ? sock_has_perm+0x9f/0x3e0 [ 28.573749] [] ? selinux_file_send_sigiotask+0x310/0x310 [ 28.580813] [] ? selinux_netlbl_socket_setsockopt+0x117/0x320 [ 28.588311] [] ? selinux_netlbl_sock_rcv_skb+0x400/0x400 [ 28.595374] [] ? selinux_socket_setsockopt+0x6d/0x80 [ 28.602091] [] SyS_setsockopt+0x160/0x250 [ 28.607850] [] ? SyS_recv+0x40/0x40 [ 28.613093] [] ? retint_user+0x18/0x20 [ 28.618591] [] ? trace_hardirqs_on_thunk+0x17/0x19 [ 28.625133] [] entry_SYSCALL_64_fastpath+0x16/0x76 [ 28.632189] Dumping ftrace buffer: [ 28.635735] (ftrace buffer empty) [ 28.639410] Kernel Offset: disabled [ 28.643015] Rebooting in 86400 seconds..