[ 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 '10.128.0.255' (ECDSA) to the list of known hosts. [ 81.644749][ T38] audit: type=1400 audit(1619712250.932:8): avc: denied { execmem } for pid=8396 comm="syz-executor467" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 81.915174][ T5] usb 1-1: new high-speed USB device number 2 using dummy_hcd Debian GNU/Linux 9 syzkaller ttyS0 [ 82.275089][ T5] usb 1-1: config 0 interface 0 altsetting 0 has an invalid endpoint with address 0x0, skipping [ 82.286346][ T5] usb 1-1: config 0 interface 0 altsetting 0 has an invalid endpoint descriptor of length 2, skipping syzkaller login: [ 82.299037][ T5] usb 1-1: config 0 interface 0 altsetting 0 has 2 endpoint descriptors, different from the interface descriptor's value: 1 [ 82.465082][ T5] usb 1-1: New USB device found, idVendor=2040, idProduct=d863, bcdDevice=e4.77 [ 82.474929][ T5] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 82.483542][ T5] usb 1-1: Product: syz [ 82.488516][ T5] usb 1-1: Manufacturer: syz [ 82.493363][ T5] usb 1-1: SerialNumber: syz [ 82.509775][ T5] usb 1-1: config 0 descriptor?? [ 82.562817][ T5] usb 1-1: dvb_usb_v2: found a 'Hauppauge Mercury' in warm state [ 82.591489][ T5] usb 1-1: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer [ 82.605122][ T5] dvbdev: DVB: registering new adapter (Hauppauge Mercury) [ 82.612678][ T5] usb 1-1: media controller created [ 82.634189][ T5] dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered. [ 82.665448][ T5] usb 1-1: selecting invalid altsetting 1 [ 82.671319][ T5] set interface failed [ 82.671336][ T5] ------------[ cut here ]------------ [ 82.694772][ T5] DEBUG_LOCKS_WARN_ON(lock->magic != lock) [ 82.694838][ T5] WARNING: CPU: 0 PID: 5 at kernel/locking/mutex.c:931 __mutex_lock+0xc0b/0x1120 [ 82.710380][ T5] Modules linked in: [ 82.714378][ T5] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.12.0-syzkaller #0 [ 82.722574][ T5] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.732850][ T5] Workqueue: usb_hub_wq hub_event [ 82.738061][ T5] RIP: 0010:__mutex_lock+0xc0b/0x1120 [ 82.743496][