[ OK ] Started OpenBSD Secure Shell server. [ 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. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.141' (ECDSA) to the list of known hosts. syzkaller login: [ 32.906187] audit: type=1400 audit(1601245402.297:8): avc: denied { execmem } for pid=6357 comm="syz-executor420" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 32.928433] IPVS: ftp: loaded support on port[0] = 21 [ 32.990592] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 33.006557] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 33.015353] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 33.029678] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready executing program [ 33.059131] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 33.066462] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 33.073672] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 33.083977] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 33.107242] ------------[ cut here ]------------ [ 33.112161] WARNING: CPU: 0 PID: 2972 at net/mac80211/sta_info.c:463 sta_info_insert_rcu+0x1cf/0x1f40 [ 33.121511] Kernel panic - not syncing: panic_on_warn set ... [ 33.121511] [ 33.128906] CPU: 0 PID: 2972 Comm: kworker/u4:4 Not tainted 4.14.198-syzkaller #0 [ 33.136877] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.146317] Workqueue: phy2 ieee80211_iface_work [ 33.151668] Call Trace: [ 33.154266] dump_stack+0x1b2/0x283 [ 33.157869] panic+0x1f9/0x42d [ 33.161034] ? add_taint.cold+0x16/0x16 [ 33.165693] ? sta_info_insert_rcu+0x1cf/0x1f40 [ 33.170370] ? sta_info_insert_rcu+0x1cf/0x1f40 [ 33.175024] __warn.cold+0x20/0x4b [ 33.178564] ? ist_end_non_atomic+0x10/0x10 [ 33.182891] ? sta_info_insert_rcu+0x1cf/0x1f40 [ 33.187585] report_bug+0x208/0x249 [ 33.191194] do_error_trap+0x195/0x2d0 [ 33.195059] ? math_error+0x2d0/0x2d0 [ 33.198836] ? sta_info_insert_rcu+0x68/0x1f40 [ 33.203391] ? __mutex_lock+0x360/0x1310 [ 33.207471] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.212302] invalid_op+0x1b/0x40 [ 33.215737] RIP: 0010:sta_info_insert_rcu+0x1cf/0x1f40 [ 33.220991] RSP: 0018:ffff88809d83fad8 EFLAGS: 00010297 [ 33.226335] RAX: ffff88809d81a180 RBX: ffff88808d935380 RCX: 00000000bd63276f [ 33.233753] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88808d93644c [ 33.240998] RBP: ffff8880978a0c00 R08: 0000000000000000 R09: ffffffff8951e762 [ 33.248467] R10: 000000000011e148 R11: ffff88809d81a180 R12: 00000000bd63377f [ 33.255757] R13: 0000000000000001 R14: ffff888094aa18c8 R15: ffff8880978a0c48 [ 33.263122] ? sta_info_insert_rcu+0x1cf/0x1f40 [ 33.267798] ? lock_downgrade+0x740/0x740 [ 33.272023] ? __local_bh_enable_ip+0xc1/0x170 [ 33.276609] ? minstrel_ht_rate_update+0x40/0x40 [ 33.281871] ? rate_control_rate_init+0x2cb/0x4f0 [ 33.286706] ieee80211_ibss_finish_sta+0x1db/0x2b0 [ 33.291968] ? ieee80211_sta_join_ibss+0xd50/0xd50 [ 33.296968] ? __local_bh_enable_ip+0xc1/0x170 [ 33.301538] ieee80211_ibss_work+0x260/0xc90 [ 33.306531] ? ieee80211_ibss_rx_queued_mgmt+0x1680/0x1680 [ 33.312263] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 33.317348] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 33.322337] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 33.327431] ieee80211_iface_work+0x690/0x770 [ 33.331918] process_one_work+0x793/0x14a0 [ 33.336250] ? work_busy+0x320/0x320 [ 33.339959] ? worker_thread+0x158/0xff0 [ 33.344168] ? _raw_spin_unlock_irq+0x24/0x80 [ 33.348755] worker_thread+0x5cc/0xff0 [ 33.352621] ? rescuer_thread+0xc80/0xc80 [ 33.356778] kthread+0x30d/0x420 [ 33.360154] ? kthread_create_on_node+0xd0/0xd0 [ 33.364981] ret_from_fork+0x24/0x30 [ 33.370137] Kernel Offset: disabled [ 33.374177] Rebooting in 86400 seconds..