[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 21.169365] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 26.045809] random: sshd: uninitialized urandom read (32 bytes read) [ 26.399458] random: sshd: uninitialized urandom read (32 bytes read) [ 26.945948] random: sshd: uninitialized urandom read (32 bytes read) [ 27.119493] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.61' (ECDSA) to the list of known hosts. [ 32.674910] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 32.769107] netlink: 'syz-executor064': attribute type 9 has an invalid length. [ 32.778769] WARNING: CPU: 0 PID: 4439 at net/wireless/core.c:550 wiphy_register+0x12c1/0x2510 [ 32.787440] Kernel panic - not syncing: panic_on_warn set ... [ 32.787440] [ 32.794790] CPU: 0 PID: 4439 Comm: syz-executor064 Not tainted 4.18.0-rc8+ #184 [ 32.802262] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.811603] Call Trace: [ 32.814182] dump_stack+0x1c9/0x2b4 [ 32.817824] ? dump_stack_print_info.cold.2+0x52/0x52 [ 32.823102] panic+0x238/0x4e7 [ 32.826294] ? add_taint.cold.5+0x16/0x16 [ 32.830429] ? __warn.cold.8+0x148/0x1ba [ 32.834480] ? __warn.cold.8+0x117/0x1ba [ 32.838529] ? wiphy_register+0x12c1/0x2510 [ 32.842835] __warn.cold.8+0x163/0x1ba [ 32.846707] ? wiphy_register+0x12c1/0x2510 [ 32.851021] report_bug+0x252/0x2d0 [ 32.854660] do_error_trap+0x1fc/0x4d0 [ 32.858535] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 32.863535] ? math_error+0x3e0/0x3e0 [ 32.867323] ? depot_save_stack+0x291/0x470 [ 32.871633] ? save_stack+0xa9/0xd0 [ 32.875246] ? save_stack+0x43/0xd0 [ 32.878861] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.883693] do_invalid_op+0x1b/0x20 [ 32.887395] invalid_op+0x14/0x20 [ 32.890846] RIP: 0010:wiphy_register+0x12c1/0x2510 [ 32.895751] Code: 74 08 3c 01 0f 8e c5 10 00 00 66 45 89 67 30 e9 18 f9 ff ff e8 40 00 4c fb 0f 0b bb ea ff ff ff e9 f5 f3 ff ff e8 2f 00 4c fb <0f> 0b bb ea ff ff ff e9 e4 f3 ff ff e8 1e 00 4c fb 0f 0b bb ea ff [ 32.915186] RSP: 0018:ffff8801ac51ee60 EFLAGS: 00010293 [ 32.920546] RAX: ffff8801af3fc700 RBX: 0000000000000000 RCX: ffffffff86301238 [ 32.927932] RDX: 0000000000000000 RSI: ffffffff86301821 RDI: 0000000000000005 [ 32.935189] RBP: ffff8801ac51f000 R08: ffff8801af3fc700 R09: ffffed00358d6114 [ 32.942589] R10: ffffed00358d6114 R11: ffff8801ac6b08a5 R12: ffff8801ac6b327c [ 32.949846] R13: ffffffff87838ae0 R14: dffffc0000000000 R15: ffff8801ac6b08a0 [ 32.957120] ? wiphy_register+0xcd8/0x2510 [ 32.961350] ? wiphy_register+0x12c1/0x2510 [ 32.965683] ? wiphy_unregister+0x12c0/0x12c0 [ 32.970171] ? rcu_read_lock_sched_held+0x108/0x120 [ 32.975174] ? __kmalloc+0x5f9/0x760 [ 32.978880] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 32.984405] ? ieee80211_cs_list_valid+0x7c/0x440 [ 32.989248] ? ieee80211_register_hw+0xc13/0x35e0 [ 32.994088] ieee80211_register_hw+0x13d5/0x35e0 [ 32.998830] ? rcu_report_qs_rnp+0x781/0x7a0 [ 33.003227] ? ieee80211_free_ack_frame+0x60/0x60 [ 33.008057] mac80211_hwsim_new_radio+0x1db8/0x33b0 [ 33.013077] ? __rhashtable_insert_fast.constprop.53+0xf90/0xf90 [ 33.019300] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 33.024555] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 33.029295] ? retint_kernel+0x10/0x10 [ 33.033182] ? vprintk_default+0x28/0x30 [ 33.037222] ? vprintk_func+0x81/0xe7 [ 33.041019] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 33.045768] ? graph_lock+0x170/0x170 [ 33.049554] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 33.054727] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 33.059725] ? validate_nla+0x2d9/0x7b0 [ 33.063695] hwsim_new_radio_nl+0x7c0/0xa80 [ 33.067999] ? nla_parse+0x32b/0x4b0 [ 33.071702] ? mac80211_hwsim_new_radio+0x33b0/0x33b0 [ 33.076882] ? __netlink_ns_capable+0x100/0x130 [ 33.081536] genl_family_rcv_msg+0x8a3/0x1140 [ 33.086018] ? genl_unregister_family+0x8b0/0x8b0 [ 33.090843] ? lock_downgrade+0x8f0/0x8f0 [ 33.094971] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 33.099969] ? kasan_check_read+0x11/0x20 [ 33.104109] ? lock_acquire+0x1e4/0x540 [ 33.108067] ? genl_rcv+0x19/0x40 [ 33.111505] genl_rcv_msg+0xc6/0x168 [ 33.115201] netlink_rcv_skb+0x172/0x440 [ 33.119245] ? genl_family_rcv_msg+0x1140/0x1140 [ 33.123984] ? netlink_ack+0xbe0/0xbe0 [ 33.127849] ? rcu_report_qs_rnp+0x7a0/0x7a0 [ 33.132240] genl_rcv+0x28/0x40 [ 33.135500] netlink_unicast+0x5a0/0x760 [ 33.139541] ? netlink_attachskb+0x9a0/0x9a0 [ 33.143929] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 33.149448] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 33.154455] netlink_sendmsg+0xa18/0xfd0 [ 33.158499] ? netlink_unicast+0x760/0x760 [ 33.162716] ? move_addr_to_kernel.part.20+0x100/0x100 [ 33.167973] ? security_socket_sendmsg+0x94/0xc0 [ 33.172708] ? netlink_unicast+0x760/0x760 [ 33.176988] sock_sendmsg+0xd5/0x120 [ 33.180707] ___sys_sendmsg+0x7fd/0x930 [ 33.184666] ? copy_msghdr_from_user+0x580/0x580 [ 33.189403] ? graph_lock+0x170/0x170 [ 33.193654] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 33.199169] ? __fget_light+0x2f7/0x440 [ 33.203126] ? fget_raw+0x20/0x20 [ 33.206566] ? lock_downgrade+0x8f0/0x8f0 [ 33.210746] ? handle_mm_fault+0x8c4/0xc80 [ 33.214974] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 33.220552] ? sockfd_lookup_light+0xc5/0x160 [ 33.225164] __sys_sendmsg+0x11d/0x290 [ 33.229037] ? __ia32_sys_shutdown+0x80/0x80 [ 33.233445] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 33.238968] ? __do_page_fault+0x449/0xe50 [ 33.243217] __x64_sys_sendmsg+0x78/0xb0 [ 33.247262] do_syscall_64+0x1b9/0x820 [ 33.251129] ? syscall_return_slowpath+0x5e0/0x5e0 [ 33.256038] ? syscall_return_slowpath+0x31d/0x5e0 [ 33.260954] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 33.266473] ? retint_user+0x18/0x18 [ 33.270309] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.275146] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.280320] RIP: 0033:0x4402c9 [ 33.283485] 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 [ 33.302666] RSP: 002b:00007ffcf9426d68 EFLAGS: 00000213 ORIG_RAX: 000000000000002e [ 33.310375] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004402c9 [ 33.317624] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 33.324876] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 33.332125] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401b50 [ 33.339371] R13: 0000000000401be0 R14: 0000000000000000 R15: 0000000000000000 [ 33.347045] Dumping ftrace buffer: [ 33.350646] (ftrace buffer empty) [ 33.354344] Kernel Offset: disabled [ 33.357951] Rebooting in 86400 seconds..