[ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.171' (ECDSA) to the list of known hosts. syzkaller login: [ 43.766506] audit: type=1400 audit(1602598032.961:8): avc: denied { execmem } for pid=6488 comm="syz-executor450" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 43.781580] IPVS: ftp: loaded support on port[0] = 21 [ 43.866625] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 43.879199] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 43.894211] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 43.906752] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready executing program [ 43.913429] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 43.921356] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 43.925630] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 43.948476] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 43.962107] ------------[ cut here ]------------ [ 43.967609] WARNING: CPU: 1 PID: 23 at net/mac80211/sta_info.c:458 sta_info_insert_rcu.cold+0x104/0x280 [ 43.977157] Kernel panic - not syncing: panic_on_warn set ... [ 43.977157] [ 43.984526] CPU: 1 PID: 23 Comm: kworker/u4:1 Not tainted 4.19.150-syzkaller #0 [ 43.991958] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.001313] Workqueue: phy3 ieee80211_iface_work [ 44.006249] Call Trace: [ 44.008948] dump_stack+0x22c/0x33e [ 44.012575] panic+0x2ac/0x565 [ 44.015757] ? __warn_printk+0xf3/0xf3 [ 44.019647] ? sta_info_insert_rcu.cold+0x104/0x280 [ 44.025351] ? __probe_kernel_read+0x130/0x1b0 [ 44.030076] ? __warn.cold+0x5/0x5a [ 44.033692] ? __warn+0xe4/0x200 [ 44.037071] ? sta_info_insert_rcu.cold+0x104/0x280 [ 44.042083] __warn.cold+0x20/0x5a [ 44.045636] ? sta_info_insert_rcu.cold+0x104/0x280 [ 44.050757] report_bug+0x262/0x2b0 [ 44.054375] do_error_trap+0x1e1/0x330 [ 44.058272] ? math_error+0x320/0x320 [ 44.062079] ? __irq_work_queue_local+0x155/0x200 [ 44.066922] ? irq_work_queue+0x29/0x80 [ 44.070880] ? error_entry+0x72/0xd0 [ 44.074587] ? trace_hardirqs_off_caller+0x6e/0x210 [ 44.079603] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 44.084442] invalid_op+0x14/0x20 [ 44.087881] RIP: 0010:sta_info_insert_rcu.cold+0x104/0x280 [ 44.093487] Code: 74 24 30 48 c7 c7 80 98 1c 8b e8 d5 4e 68 fc 0f b6 44 24 30 e9 10 5a ff ff e8 d6 ff 23 fa 48 c7 c7 c0 5e cd 88 e8 79 7b 0d fa <0f> 0b 41 bd ea ff ff ff e9 4d 63 ff ff e8 b8 ff 23 fa 0f b6 f3 48 [ 44.112378] RSP: 0018:ffff8880a9bdfa60 EFLAGS: 00010282 [ 44.117767] RAX: 0000000000000024 RBX: ffff888090b89c40 RCX: 0000000000000000 [ 44.125161] RDX: 0000000000000000 RSI: ffffffff815b623f RDI: ffffed101537bf3e [ 44.132434] RBP: 0000000000000001 R08: 0000000000000024 R09: 0000000000000000 [ 44.139972] R10: 0000000000000005 R11: 0000000000000000 R12: 0000000091cffce7 [ 44.147297] R13: ffff8880a5f3c888 R14: ffff8880a5f3c840 R15: 000000000000d0e5 [ 44.155304] ? vprintk_func+0x7f/0x224 [ 44.159202] ? check_preemption_disabled+0x41/0x2b0 [ 44.164358] ? minstrel_ht_rate_update+0x40/0x40 [ 44.169151] ? rate_control_rate_init+0x33c/0x570 [ 44.174083] ieee80211_ibss_finish_sta+0x277/0x380 [ 44.179035] ? ieee80211_sta_join_ibss+0xf90/0xf90 [ 44.183965] ? ieee80211_ibss_work+0x120/0xec0 [ 44.188654] ? __local_bh_enable_ip+0x159/0x2a0 [ 44.193328] ? lockdep_hardirqs_on+0x3c1/0x5e0 [ 44.197930] ieee80211_ibss_work+0x2b6/0xec0 [ 44.202350] ? ieee80211_ibss_rx_queued_mgmt+0x1940/0x1940 [ 44.207992] ? mark_held_locks+0xa6/0xf0 [ 44.212062] ? _raw_spin_unlock_irqrestore+0x7d/0xf0 [ 44.217178] ? lockdep_hardirqs_on+0x3c1/0x5e0 [ 44.222208] ? _raw_spin_unlock_irqrestore+0x6a/0xf0 [ 44.227333] ieee80211_iface_work+0x828/0x900 [ 44.231848] process_one_work+0x796/0x14e0 [ 44.236396] ? init_worker_pool+0x5c0/0x5c0 [ 44.240867] worker_thread+0x64c/0x1130 [ 44.244924] ? __kthread_parkme+0x133/0x1e0 [ 44.249240] ? rescuer_thread+0xce0/0xce0 [ 44.253373] kthread+0x33f/0x460 [ 44.256746] ? kthread_park+0x180/0x180 [ 44.260778] ret_from_fork+0x24/0x30 [ 44.266211] Kernel Offset: disabled [ 44.269935] Rebooting in 86400 seconds..