[ OK ] Reached target Timers. Starting OpenBSD Secure Shell server... [ OK ] Started Regular background program processing daemon. Starting getty on tty2-tty6 if dbus and logind are not available... Starting System Logging Service... [ OK ] Started Permit User Sessions. [ OK ] Started System Logging Service. [ OK ] Found device /dev/ttyS0. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Warning: Permanently added '10.128.0.31' (ECDSA) to the list of known hosts. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 74.883200][ T34] audit: type=1400 audit(1607711735.616:8): avc: denied { execmem } for pid=8480 comm="syz-executor502" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 74.899011][ T8481] IPVS: ftp: loaded support on port[0] = 21 [ 74.995407][ T268] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.010806][ T268] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.019977][ T2993] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 75.051041][ T219] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.060979][ T219] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.070626][ T3176] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 75.094644][ T219] ------------[ cut here ]------------ [ 75.100596][ T219] WARNING: CPU: 1 PID: 219 at net/mac80211/sta_info.c:547 sta_info_insert_rcu+0x26f/0x2c30 [ 75.114334][ T219] Modules linked in: [ 75.119749][ T219] CPU: 1 PID: 219 Comm: kworker/u4:5 Not tainted 5.10.0-rc7-syzkaller #0 [ 75.128532][ T219] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.138866][ T219] Workqueue: phy3 ieee80211_iface_work [ 75.144445][ T219] RIP: 0010:sta_info_insert_rcu+0x26f/0x2c30 [