INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.46' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 23.646931] ------------[ cut here ]------------ [ 23.651866] add_uevent_var: buffer size too small [ 23.657013] WARNING: CPU: 0 PID: 4429 at lib/kobject_uevent.c:597 add_uevent_var+0x2aa/0x2d0 [ 23.665580] Kernel panic - not syncing: panic_on_warn set ... [ 23.665580] [ 23.672913] CPU: 0 PID: 4429 Comm: syzkaller156796 Not tainted 4.16.0-rc6+ #290 [ 23.680328] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 23.689658] Call Trace: [ 23.692217] dump_stack+0x194/0x24d [ 23.695815] ? arch_local_irq_restore+0x53/0x53 [ 23.700454] ? vsnprintf+0x1ed/0x1900 [ 23.704226] panic+0x1e4/0x41c [ 23.707391] ? refcount_error_report+0x214/0x214 [ 23.712118] ? show_regs_print_info+0x18/0x18 [ 23.716583] ? __warn+0x1c1/0x200 [ 23.720015] ? add_uevent_var+0x2aa/0x2d0 [ 23.724135] __warn+0x1dc/0x200 [ 23.727387] ? add_uevent_var+0x2aa/0x2d0 [ 23.731504] report_bug+0x1f4/0x2b0 [ 23.735103] fixup_bug.part.10+0x37/0x80 [ 23.739134] do_error_trap+0x2d7/0x3e0 [ 23.742991] ? vprintk_default+0x28/0x30 [ 23.747031] ? math_error+0x400/0x400 [ 23.750801] ? printk+0xaa/0xca [ 23.754052] ? show_regs_print_info+0x18/0x18 [ 23.758520] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 23.763335] do_invalid_op+0x1b/0x20 [ 23.767026] invalid_op+0x1b/0x40 [ 23.770454] RIP: 0010:add_uevent_var+0x2aa/0x2d0 [ 23.775179] RSP: 0018:ffff8801af58e810 EFLAGS: 00010286 [ 23.780513] RAX: dffffc0000000008 RBX: ffff8801af45c800 RCX: ffffffff815b423e [ 23.787752] RDX: 0000000000000000 RSI: 1ffff10035eb1cb2 RDI: 1ffff10035eb1c87 [ 23.794990] RBP: ffff8801af58e8d8 R08: 1ffff10035eb1c49 R09: 0000000000000000 [ 23.802231] R10: 0000000000000002 R11: 0000000000000000 R12: 1ffff10035eb1d03 [ 23.809475] R13: ffff8801af45c918 R14: 00000000000003e6 R15: 0000000000000438 [ 23.816731] ? vprintk_func+0x5e/0xc0 [ 23.820519] ? kobj_bcast_filter+0x1c0/0x1c0 [ 23.824900] ? string+0x180/0x200 [ 23.828326] ? rfkill_dev_uevent+0x1a/0x170 [ 23.832622] rfkill_dev_uevent+0x31/0x170 [ 23.836742] dev_uevent+0x2b6/0x7e0 [ 23.840348] ? rfkill_resume_polling+0x160/0x160 [ 23.845076] ? device_get_devnode+0x2e0/0x2e0 [ 23.849548] ? add_uevent_var+0x202/0x2d0 [ 23.853669] ? kobj_bcast_filter+0x1c0/0x1c0 [ 23.858057] ? kobject_uevent_env+0x1ed/0xd30 [ 23.862525] ? kobject_get_path+0xb9/0x190 [ 23.866736] ? kobject_uevent_env+0x2d0/0xd30 [ 23.871208] ? device_get_devnode+0x2e0/0x2e0 [ 23.875677] kobject_uevent_env+0x3fe/0xd30 [ 23.879976] ? mutex_unlock+0xd/0x10 [ 23.883754] ? device_pm_add+0x23e/0x310 [ 23.887792] kobject_uevent+0x1f/0x30 [ 23.891566] device_add+0xd04/0x1650 [ 23.895253] ? device_private_init+0x230/0x230 [ 23.899808] ? rfkill_register+0xe8/0xd60 [ 23.903928] rfkill_register+0x254/0xd60 [ 23.907961] ? rfkill_fop_write+0x610/0x610 [ 23.912254] ? kfree_skb+0x16a/0x4c0 [ 23.915943] ? nl80211_notify_wiphy+0x234/0x2a0 [ 23.920586] ? mntput_no_expire+0x15e/0xa90 [ 23.924881] ? lookup_one_len+0x33e/0x4c0 [ 23.929004] ? do_raw_spin_trylock+0x190/0x190 [ 23.933566] ? nl80211_notify_wiphy+0x1fe/0x2a0 [ 23.938210] ? nl80211_set_coalesce+0x2620/0x2620 [ 23.943040] wiphy_register+0x19d1/0x2050 [ 23.947167] ? wiphy_unregister+0x1120/0x1120 [ 23.951636] ? rcu_read_lock_sched_held+0x108/0x120 [ 23.956624] ? __kmalloc+0x46e/0x760 [ 23.960306] ? find_held_lock+0x35/0x1d0 [ 23.964342] ? ieee80211_cs_list_valid+0x2f3/0x3c0 [ 23.969332] ieee80211_register_hw+0x1120/0x3150 [ 23.974064] ? ieee80211_register_hw+0x1120/0x3150 [ 23.978968] ? ieee80211_ifa6_changed+0x9c0/0x9c0 [ 23.983791] mac80211_hwsim_new_radio+0x1ba9/0x31f0 [ 23.988777] ? widen_string+0xa1/0x1e0 [ 23.992643] ? __rhashtable_insert_fast.constprop.50+0xc10/0xc10 [ 23.998763] ? pointer+0x9c0/0x9c0 [ 24.002277] ? kasprintf+0xb3/0xe0 [ 24.005788] ? kvasprintf+0xd5/0x130 [ 24.009481] ? genl_rcv_msg+0x115/0x140 [ 24.013425] ? kasprintf+0xb3/0xe0 [ 24.016937] ? kvasprintf_const+0x160/0x160 [ 24.021230] ? trace_hardirqs_off+0x10/0x10 [ 24.025527] hwsim_new_radio_nl+0x775/0xa90 [ 24.029821] ? mac80211_hwsim_new_radio+0x31f0/0x31f0 [ 24.034986] ? __netlink_ns_capable+0xe1/0x120 [ 24.039540] genl_family_rcv_msg+0x7b7/0xfb0 [ 24.043919] ? genl_rcv+0x40/0x40 [ 24.047344] ? lock_downgrade+0x980/0x980 [ 24.051468] ? __lock_is_held+0xb6/0x140 [ 24.055506] genl_rcv_msg+0xb2/0x140 [ 24.059192] netlink_rcv_skb+0x14b/0x380 [ 24.063228] ? genl_family_rcv_msg+0xfb0/0xfb0 [ 24.067780] ? netlink_ack+0xa10/0xa10 [ 24.071635] ? genl_rcv+0x19/0x40 [ 24.075063] ? netlink_skb_destructor+0x1d0/0x1d0 [ 24.079874] ? copyin+0x91/0xb0 [ 24.083125] genl_rcv+0x28/0x40 [ 24.086374] netlink_unicast+0x4c4/0x6b0 [ 24.090407] ? netlink_attachskb+0x8a0/0x8a0 [ 24.094787] ? security_netlink_send+0x81/0xb0 [ 24.099340] netlink_sendmsg+0xa4a/0xe80 [ 24.103374] ? netlink_unicast+0x6b0/0x6b0 [ 24.107579] ? security_socket_sendmsg+0x89/0xb0 [ 24.112303] ? netlink_unicast+0x6b0/0x6b0 [ 24.116512] sock_sendmsg+0xca/0x110 [ 24.120195] ___sys_sendmsg+0x767/0x8b0 [ 24.124138] ? SyS_membarrier+0x700/0x700 [ 24.128258] ? copy_msghdr_from_user+0x590/0x590 [ 24.132986] ? __pmd_alloc+0x4e0/0x4e0 [ 24.136847] ? trace_hardirqs_off+0x10/0x10 [ 24.141142] ? find_held_lock+0x35/0x1d0 [ 24.145176] ? __fget_light+0x2b2/0x3c0 [ 24.149121] ? fget_raw+0x20/0x20 [ 24.152549] ? __do_page_fault+0x58e/0xbe0 [ 24.156752] ? lock_downgrade+0x980/0x980 [ 24.160872] __sys_sendmsg+0xe5/0x210 [ 24.164644] ? __sys_sendmsg+0xe5/0x210 [ 24.168589] ? SyS_shutdown+0x290/0x290 [ 24.172536] ? __do_page_fault+0x358/0xbe0 [ 24.176744] ? move_addr_to_kernel+0x60/0x60 [ 24.181122] SyS_sendmsg+0x2d/0x50 [ 24.184634] ? __sys_sendmsg+0x210/0x210 [ 24.188666] do_syscall_64+0x281/0x940 [ 24.192523] ? vmalloc_sync_all+0x30/0x30 [ 24.196640] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 24.202148] ? syscall_return_slowpath+0x550/0x550 [ 24.207049] ? syscall_return_slowpath+0x2ac/0x550 [ 24.211952] ? retint_user+0x18/0x18 [ 24.215641] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 24.220457] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 24.225617] RIP: 0033:0x43fda9 [ 24.228777] RSP: 002b:00007fff3847d5a8 EFLAGS: 00000213 ORIG_RAX: 000000000000002e [ 24.236457] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fda9 [ 24.243697] RDX: 0000000000000000 RSI: 0000000020b3dfc8 RDI: 0000000000000003 [ 24.250938] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 24.258178] R10: 00000000004002c8 R11: 0000000000000213 R12: 00000000004016d0 [ 24.265936] R13: 0000000000401760 R14: 0000000000000000 R15: 0000000000000000 [ 24.273767] Dumping ftrace buffer: [ 24.277385] (ftrace buffer empty) [ 24.281068] Kernel Offset: disabled [ 24.284667] Rebooting in 86400 seconds..