[ OK ] Reached target Login Prompts. [ 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 '10.128.10.18' (ECDSA) to the list of known hosts. syzkaller login: [ 32.800397] audit: type=1400 audit(1601514011.634:8): avc: denied { execmem } for pid=6360 comm="syz-executor344" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 32.823157] IPVS: ftp: loaded support on port[0] = 21 [ 32.886583] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 32.898719] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 32.905928] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 executing program [ 32.941076] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 32.960614] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready [ 32.967829] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 32.975010] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 32.982801] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 32.998226] ------------[ cut here ]------------ [ 33.003156] WARNING: CPU: 0 PID: 5 at net/mac80211/sta_info.c:463 sta_info_insert_rcu+0x1cf/0x1f40 [ 33.012232] Kernel panic - not syncing: panic_on_warn set ... [ 33.012232] [ 33.019581] CPU: 0 PID: 5 Comm: kworker/u4:0 Not tainted 4.14.198-syzkaller #0 [ 33.026920] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.036302] Workqueue: phy3 ieee80211_iface_work [ 33.041048] Call Trace: [ 33.043635] dump_stack+0x1b2/0x283 [ 33.047272] panic+0x1f9/0x42d [ 33.050615] ? add_taint.cold+0x16/0x16 [ 33.054604] ? sta_info_insert_rcu+0x1cf/0x1f40 [ 33.059263] ? sta_info_insert_rcu+0x1cf/0x1f40 [ 33.063957] __warn.cold+0x20/0x4b [ 33.067476] ? ist_end_non_atomic+0x10/0x10 [ 33.071775] ? sta_info_insert_rcu+0x1cf/0x1f40 [ 33.076420] report_bug+0x208/0x249 [ 33.080022] do_error_trap+0x195/0x2d0 [ 33.083882] ? math_error+0x2d0/0x2d0 [ 33.087661] ? sta_info_insert_rcu+0x68/0x1f40 [ 33.092252] ? __mutex_lock+0x360/0x1310 [ 33.096347] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.101182] invalid_op+0x1b/0x40 [ 33.104623] RIP: 0010:sta_info_insert_rcu+0x1cf/0x1f40 [ 33.109871] RSP: 0018:ffff8880a983fad8 EFLAGS: 00010297 [ 33.115209] RAX: ffff8880a982c140 RBX: ffff888096eb9240 RCX: 00000000b4c15f3f [ 33.122498] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888096eba30c [ 33.129742] RBP: ffff888095dd8940 R08: 0000000000000000 R09: 0000000000040591 [ 33.136990] R10: ffff8880a982ca40 R11: ffff8880a982c140 R12: 00000000b4c17fbf [ 33.144246] R13: 0000000000000001 R14: ffff888097191948 R15: ffff888095dd8988 [ 33.151511] ? sta_info_insert_rcu+0x1cf/0x1f40 [ 33.156159] ? lock_downgrade+0x740/0x740 [ 33.160283] ? __local_bh_enable_ip+0xc1/0x170 [ 33.164843] ? minstrel_ht_rate_update+0x40/0x40 [ 33.169574] ? rate_control_rate_init+0x2cb/0x4f0 [ 33.174406] ieee80211_ibss_finish_sta+0x1db/0x2b0 [ 33.179313] ? ieee80211_sta_join_ibss+0xd50/0xd50 [ 33.184230] ? __local_bh_enable_ip+0xc1/0x170 [ 33.188891] ieee80211_ibss_work+0x260/0xc90 [ 33.193274] ? ieee80211_ibss_rx_queued_mgmt+0x1680/0x1680 [ 33.198875] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 33.203955] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 33.209017] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 33.214238] ieee80211_iface_work+0x690/0x770 [ 33.218760] process_one_work+0x793/0x14a0 [ 33.223017] ? work_busy+0x320/0x320 [ 33.226714] ? worker_thread+0x158/0xff0 [ 33.230756] ? _raw_spin_unlock_irq+0x24/0x80 [ 33.235282] worker_thread+0x5cc/0xff0 [ 33.239195] ? rescuer_thread+0xc80/0xc80 [ 33.243321] kthread+0x30d/0x420 [ 33.246665] ? kthread_create_on_node+0xd0/0xd0 [ 33.251306] ret_from_fork+0x24/0x30 [ 33.256418] Kernel Offset: disabled [ 33.260101] Rebooting in 86400 seconds..