[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ 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 '10.128.0.239' (ECDSA) to the list of known hosts. syzkaller login: [ 70.230181][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 70.238181][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 70.277639][ T465] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 70.288314][ T4293] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 70.301990][ T465] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 70.317241][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 70.329794][ T465] ------------[ cut here ]------------ [ 70.329855][ T8447] mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium [ 70.335440][ T465] WARNING: CPU: 1 PID: 465 at net/mac80211/sta_info.c:547 sta_info_insert_rcu+0x274/0x2c40 [ 70.356872][ T465] Modules linked in: [ 70.360930][ T465] CPU: 1 PID: 465 Comm: kworker/u4:5 Not tainted 5.12.0-next-20210504-syzkaller #0 [ 70.370478][ T465] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.381483][ T465] Workqueue: phy4 ieee80211_iface_work [ 70.387321][ T465] RIP: 0010:sta_info_insert_rcu+0x274/0x2c40 [ 70.394700][ T465] Code: 24 e8 e0 47 0c f9 0f b6 85 50 ff ff ff 31 ff 83 e0 01 41 89 c4 89 c6 e8 7a 4e 0c f9 45 84 e4 0f 84 bc 00 00 00 e8 bc 47 0c f9 <0f> 0b 41 bc ea ff ff ff e8 af 47 0c f9 4c 89 f6 4c 89 ff e8 c4 f9 [ 70.415109][ T465] RSP: 0018:ffffc9000255f970 EFLAGS: 00010293 [ 70.421882][ T465] RAX: 0000000000000000 RBX: ffff888029284c00 RCX: 0000000000000000 [