[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 18.930817] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. [ 19.764479] random: sshd: uninitialized urandom read (32 bytes read) [ 20.040463] random: sshd: uninitialized urandom read (32 bytes read) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 20.515995] random: sshd: uninitialized urandom read (32 bytes read) [ 29.190073] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.18' (ECDSA) to the list of known hosts. [ 34.890185] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 34.980290] netlink: 'syz-executor502': attribute type 9 has an invalid length. [ 34.989640] WARNING: CPU: 1 PID: 4388 at net/wireless/core.c:550 wiphy_register+0x12b8/0x2740 [ 34.998312] Kernel panic - not syncing: panic_on_warn set ... [ 34.998312] [ 35.005658] CPU: 1 PID: 4388 Comm: syz-executor502 Not tainted 4.18.0-rc8+ #183 [ 35.013086] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.022424] Call Trace: [ 35.025010] dump_stack+0x1c9/0x2b4 [ 35.028638] ? dump_stack_print_info.cold.2+0x52/0x52 [ 35.033816] panic+0x238/0x4e7 [ 35.036991] ? add_taint.cold.5+0x16/0x16 [ 35.041182] ? __warn.cold.8+0x148/0x1ba [ 35.045241] ? __warn.cold.8+0x117/0x1ba [ 35.049299] ? wiphy_register+0x12b8/0x2740 [ 35.053609] __warn.cold.8+0x163/0x1ba [ 35.057529] ? wiphy_register+0x12b8/0x2740 [ 35.061842] report_bug+0x252/0x2d0 [ 35.065455] do_error_trap+0x1fc/0x4d0 [ 35.069328] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 35.074328] ? math_error+0x3e0/0x3e0 [ 35.078115] ? depot_save_stack+0x291/0x470 [ 35.082423] ? save_stack+0xa9/0xd0 [ 35.086048] ? save_stack+0x43/0xd0 [ 35.089672] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.094501] do_invalid_op+0x1b/0x20 [ 35.098199] invalid_op+0x14/0x20 [ 35.101639] RIP: 0010:wiphy_register+0x12b8/0x2740 [ 35.106543] Code: 74 08 3c 01 0f 8e 45 13 00 00 66 45 89 66 30 e9 21 f9 ff ff e8 79 33 47 fb 0f 0b bb ea ff ff ff e9 fe f3 ff ff e8 68 33 47 fb <0f> 0b bb ea ff ff ff e9 ed f3 ff ff e8 57 33 47 fb 0f 0b bb ea ff [ 35.125714] RSP: 0018:ffff8801ad796e40 EFLAGS: 00010293 [ 35.131060] RAX: ffff8801af35c600 RBX: 0000000000000000 RCX: ffffffff8634dcb8 [ 35.138311] RDX: 0000000000000000 RSI: ffffffff8634e298 RDI: 0000000000000005 [ 35.145561] RBP: ffff8801ad796fe0 R08: ffff8801af35c600 R09: ffffed00359ca11c [ 35.152812] R10: ffffed00359ca11c R11: ffff8801ace508e5 R12: ffff8801ace532d4 [ 35.160064] R13: ffffffff8783c000 R14: ffff8801ace508e0 R15: dffffc0000000000 [ 35.167328] ? wiphy_register+0xcd8/0x2740 [ 35.171547] ? wiphy_register+0x12b8/0x2740 [ 35.175859] ? wiphy_unregister+0x12c0/0x12c0 [ 35.180552] ? rcu_read_lock_sched_held+0x108/0x120 [ 35.185560] ? __kmalloc+0x5f9/0x760 [ 35.189272] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.194793] ? ieee80211_cs_list_valid+0x7c/0x440 [ 35.199628] ? ieee80211_register_hw+0xc61/0x3890 [ 35.204466] ieee80211_register_hw+0x146b/0x3890 [ 35.209221] ? ieee80211_free_ack_frame+0x60/0x60 [ 35.214060] mac80211_hwsim_new_radio+0x1e55/0x3490 [ 35.219079] ? __rhashtable_insert_fast.constprop.52+0xf60/0xf60 [ 35.225212] ? lock_downgrade+0x8f0/0x8f0 [ 35.229348] ? mark_held_locks+0xc9/0x160 [ 35.233480] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 35.238069] ? vprintk_default+0x28/0x30 [ 35.242122] ? vprintk_func+0x81/0xe7 [ 35.245908] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 35.250662] ? graph_lock+0x170/0x170 [ 35.254450] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 35.259625] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 35.264623] ? validate_nla+0x2d9/0x7b0 [ 35.268581] hwsim_new_radio_nl+0x7c0/0xa80 [ 35.272893] ? nla_parse+0x32b/0x4e0 [ 35.276639] ? mac80211_hwsim_new_radio+0x3490/0x3490 [ 35.281826] ? __netlink_ns_capable+0x100/0x130 [ 35.286481] genl_family_rcv_msg+0x8a3/0x1140 [ 35.290965] ? genl_unregister_family+0x8b0/0x8b0 [ 35.295790] ? lock_downgrade+0x8f0/0x8f0 [ 35.299924] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 35.304929] ? kasan_check_read+0x11/0x20 [ 35.309071] ? lock_acquire+0x1e4/0x540 [ 35.313036] ? genl_rcv+0x19/0x40 [ 35.316486] genl_rcv_msg+0xc6/0x168 [ 35.320186] netlink_rcv_skb+0x172/0x440 [ 35.324235] ? genl_family_rcv_msg+0x1140/0x1140 [ 35.328976] ? netlink_ack+0xbe0/0xbe0 [ 35.332845] ? rcu_report_qs_rnp+0x7a0/0x7a0 [ 35.337244] genl_rcv+0x28/0x40 [ 35.340509] netlink_unicast+0x5a0/0x760 [ 35.344647] ? netlink_attachskb+0x9a0/0x9a0 [ 35.349064] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.354597] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 35.359603] netlink_sendmsg+0xa18/0xfc0 [ 35.363654] ? netlink_unicast+0x760/0x760 [ 35.367930] ? move_addr_to_kernel.part.18+0x100/0x100 [ 35.373205] ? security_socket_sendmsg+0x94/0xc0 [ 35.377949] ? netlink_unicast+0x760/0x760 [ 35.382178] sock_sendmsg+0xd5/0x120 [ 35.385882] ___sys_sendmsg+0x7fd/0x930 [ 35.389845] ? copy_msghdr_from_user+0x580/0x580 [ 35.394644] ? graph_lock+0x170/0x170 [ 35.398447] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.403979] ? __fget_light+0x2f7/0x440 [ 35.407945] ? fget_raw+0x20/0x20 [ 35.411391] ? lock_downgrade+0x8f0/0x8f0 [ 35.415521] ? handle_mm_fault+0x8c4/0xc80 [ 35.419742] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 35.425270] ? sockfd_lookup_light+0xc5/0x160 [ 35.429752] __sys_sendmsg+0x11d/0x290 [ 35.433626] ? __ia32_sys_shutdown+0x80/0x80 [ 35.438029] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.443605] ? __do_page_fault+0x449/0xe50 [ 35.447844] __x64_sys_sendmsg+0x78/0xb0 [ 35.451892] do_syscall_64+0x1b9/0x820 [ 35.455763] ? syscall_return_slowpath+0x5e0/0x5e0 [ 35.460686] ? syscall_return_slowpath+0x31d/0x5e0 [ 35.465605] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.471128] ? retint_user+0x18/0x18 [ 35.474826] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.479651] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.484824] RIP: 0033:0x4402c9 [ 35.487992] 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 [ 35.507236] RSP: 002b:00007ffd2a771cf8 EFLAGS: 00000213 ORIG_RAX: 000000000000002e [ 35.514942] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004402c9 [ 35.522269] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 35.529615] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 35.536872] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401b50 [ 35.544124] R13: 0000000000401be0 R14: 0000000000000000 R15: 0000000000000000 [ 35.552015] Dumping ftrace buffer: [ 35.555803] (ftrace buffer empty) [ 35.559519] Kernel Offset: disabled [ 35.563129] Rebooting in 86400 seconds..