[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 21.777606] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 26.153642] random: sshd: uninitialized urandom read (32 bytes read) [ 26.529996] random: sshd: uninitialized urandom read (32 bytes read) [ 27.104064] random: sshd: uninitialized urandom read (32 bytes read) [ 27.280574] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.15.199' (ECDSA) to the list of known hosts. [ 32.745598] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 32.841801] netlink: 'syz-executor130': attribute type 9 has an invalid length. [ 32.851267] WARNING: CPU: 0 PID: 4361 at net/wireless/core.c:550 wiphy_register+0x12b8/0x2740 [ 32.859968] Kernel panic - not syncing: panic_on_warn set ... [ 32.859968] [ 32.867470] CPU: 0 PID: 4361 Comm: syz-executor130 Not tainted 4.18.0-next-20180816+ #41 [ 32.875810] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.885156] Call Trace: [ 32.887753] dump_stack+0x1c9/0x2b4 [ 32.891386] ? dump_stack_print_info.cold.2+0x52/0x52 [ 32.896581] panic+0x238/0x4e7 [ 32.899777] ? add_taint.cold.5+0x16/0x16 [ 32.904102] ? __warn.cold.8+0x148/0x1ba [ 32.908155] ? __warn.cold.8+0x117/0x1ba [ 32.912328] ? wiphy_register+0x12b8/0x2740 [ 32.916716] __warn.cold.8+0x163/0x1ba [ 32.920619] ? wiphy_register+0x12b8/0x2740 [ 32.924939] report_bug+0x252/0x2d0 [ 32.928575] do_error_trap+0x1fc/0x4d0 [ 32.932456] ? math_error+0x3e0/0x3e0 [ 32.936250] ? depot_save_stack+0x291/0x470 [ 32.940576] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.945411] ? trace_hardirqs_on_caller+0x2b0/0x2b0 [ 32.950421] ? save_stack+0xa9/0xd0 [ 32.954162] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.959003] do_invalid_op+0x1b/0x20 [ 32.963008] invalid_op+0x14/0x20 [ 32.966456] RIP: 0010:wiphy_register+0x12b8/0x2740 [ 32.971378] Code: 74 08 3c 01 0f 8e 45 13 00 00 66 45 89 66 30 e9 21 f9 ff ff e8 89 fa 41 fb 0f 0b bb ea ff ff ff e9 fe f3 ff ff e8 78 fa 41 fb <0f> 0b bb ea ff ff ff e9 ed f3 ff ff e8 67 fa 41 fb 0f 0b bb ea ff [ 32.990341] RSP: 0018:ffff8801bc41ee40 EFLAGS: 00010293 [ 32.995816] RAX: ffff8801bd276740 RBX: 0000000000000000 RCX: ffffffff863abed8 [ 33.003075] RDX: 0000000000000000 RSI: ffffffff863ac4b8 RDI: 0000000000000005 [ 33.010337] RBP: ffff8801bc41efd8 R08: ffff8801bd276740 R09: ffffed00378c4114 [ 33.017601] R10: ffffed00378c4114 R11: ffff8801bc6208a5 R12: ffff8801bc6232b4 [ 33.024868] R13: ffffffff8784a500 R14: ffff8801bc6208a0 R15: dffffc0000000000 [ 33.032139] ? wiphy_register+0xcd8/0x2740 [ 33.036369] ? wiphy_register+0x12b8/0x2740 [ 33.040692] ? __kmalloc+0x272/0x720 [ 33.044421] ? wiphy_unregister+0x1180/0x1180 [ 33.048920] ? rcu_read_lock_sched_held+0x108/0x120 [ 33.054038] ? __kmalloc+0x594/0x720 [ 33.057765] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 33.063307] ? ieee80211_cs_list_valid+0x7c/0x440 [ 33.068150] ? ieee80211_register_hw+0xc61/0x3890 [ 33.073090] ieee80211_register_hw+0x146b/0x3890 [ 33.077852] ? ieee80211_free_ack_frame+0x60/0x60 [ 33.082696] mac80211_hwsim_new_radio+0x1e55/0x3490 [ 33.087755] ? __rhashtable_insert_fast.constprop.52+0xf60/0xf60 [ 33.094017] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 33.098777] ? retint_kernel+0x10/0x10 [ 33.102668] ? vprintk_func+0x81/0x117 [ 33.106565] ? printk+0xa7/0xcf [ 33.109842] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 33.114600] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 33.119610] hwsim_new_radio_nl+0x7ee/0xac0 [ 33.123926] ? mac80211_hwsim_new_radio+0x3490/0x3490 [ 33.129112] ? __netlink_ns_capable+0x100/0x130 [ 33.133781] genl_family_rcv_msg+0x8a3/0x1140 [ 33.138276] ? genl_unregister_family+0x8b0/0x8b0 [ 33.143112] ? lock_downgrade+0x8f0/0x8f0 [ 33.147252] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 33.152262] ? kasan_check_read+0x11/0x20 [ 33.156558] ? lock_acquire+0x1e4/0x4f0 [ 33.160546] ? genl_rcv+0x19/0x40 [ 33.164001] genl_rcv_msg+0xc6/0x168 [ 33.167892] netlink_rcv_skb+0x172/0x440 [ 33.171955] ? genl_family_rcv_msg+0x1140/0x1140 [ 33.176716] ? netlink_ack+0xbe0/0xbe0 [ 33.180615] ? rcu_cleanup_dead_rnp+0x200/0x200 [ 33.185280] genl_rcv+0x28/0x40 [ 33.188571] netlink_unicast+0x5a0/0x760 [ 33.192634] ? netlink_attachskb+0x9a0/0x9a0 [ 33.197036] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 33.202576] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 33.207590] netlink_sendmsg+0xa18/0xfc0 [ 33.211646] ? netlink_unicast+0x760/0x760 [ 33.215879] ? move_addr_to_kernel.part.18+0x100/0x100 [ 33.221151] ? security_socket_sendmsg+0x94/0xc0 [ 33.225897] ? netlink_unicast+0x760/0x760 [ 33.230122] sock_sendmsg+0xd5/0x120 [ 33.233830] ___sys_sendmsg+0x7fd/0x930 [ 33.237799] ? copy_msghdr_from_user+0x580/0x580 [ 33.242566] ? graph_lock+0x170/0x170 [ 33.246362] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 33.251893] ? __fget_light+0x2f7/0x440 [ 33.255860] ? fget_raw+0x20/0x20 [ 33.259313] ? __do_page_fault+0x620/0xe50 [ 33.263559] ? lock_downgrade+0x8f0/0x8f0 [ 33.267716] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 33.273266] ? sockfd_lookup_light+0xc5/0x160 [ 33.277762] __sys_sendmsg+0x11d/0x290 [ 33.281646] ? __ia32_sys_shutdown+0x80/0x80 [ 33.286051] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 33.291591] ? __do_page_fault+0x449/0xe50 [ 33.295819] ? do_syscall_64+0x9a/0x820 [ 33.299787] ? do_syscall_64+0x9a/0x820 [ 33.303768] ? trace_hardirqs_off_caller+0x2b0/0x2b0 [ 33.308874] __x64_sys_sendmsg+0x78/0xb0 [ 33.312930] do_syscall_64+0x1b9/0x820 [ 33.316810] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 33.322187] ? syscall_return_slowpath+0x5e0/0x5e0 [ 33.327113] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.331951] ? trace_hardirqs_on_caller+0x2b0/0x2b0 [ 33.336965] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 33.342498] ? prepare_exit_to_usermode+0x291/0x3b0 [ 33.347510] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.352368] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.357563] RIP: 0033:0x4402c9 [ 33.360760] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 33.379659] RSP: 002b:00007ffcf8782348 EFLAGS: 00000213 ORIG_RAX: 000000000000002e [ 33.387463] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004402c9 [ 33.394737] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 33.402014] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 33.409386] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401b50 [ 33.416653] R13: 0000000000401be0 R14: 0000000000000000 R15: 0000000000000000 [ 33.424508] Dumping ftrace buffer: [ 33.428139] (ftrace buffer empty) [ 33.431846] Kernel Offset: disabled [ 33.435470] Rebooting in 86400 seconds..