[  OK  ] Started Getty on tty2.
[  OK  ] Started Serial Getty on ttyS0.
[  OK  ] Started Getty on tty1.
[  OK  ] Started OpenBSD Secure Shell server.
[  OK  ] Started getty on tty2-tty6 if dbus and logind are not available.

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.1.89' (ECDSA) to the list of known hosts.
syzkaller login: [   70.205138][ T3160] usb 1-1: new high-speed USB device number 2 using dummy_hcd
[   70.575440][ T3160] usb 1-1: config 0 interface 0 altsetting 0 has an invalid endpoint with address 0x0, skipping
[   70.586252][ T3160] usb 1-1: config 0 interface 0 altsetting 0 has an invalid endpoint descriptor of length 2, skipping
[   70.597373][ T3160] usb 1-1: config 0 interface 0 altsetting 0 has 2 endpoint descriptors, different from the interface descriptor's value: 1
[   70.765201][ T3160] usb 1-1: New USB device found, idVendor=2040, idProduct=d863, bcdDevice=e4.77
[   70.774407][ T3160] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[   70.783963][ T3160] usb 1-1: Product: syz
[   70.790536][ T3160] usb 1-1: Manufacturer: syz
[   70.795775][ T3160] usb 1-1: SerialNumber: syz
[   70.813152][ T3160] usb 1-1: config 0 descriptor??
[   70.863821][ T3160] usb 1-1: dvb_usb_v2: found a 'Hauppauge Mercury' in warm state
[   70.888109][ T3160] usb 1-1: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer
[   70.900096][ T3160] dvbdev: DVB: registering new adapter (Hauppauge Mercury)
[   70.912421][ T3160] usb 1-1: media controller created
[   70.931011][ T3160] dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered.
[   70.952787][ T3160] usb 1-1: selecting invalid altsetting 1
[   70.958713][ T3160] set interface failed
[   70.958730][ T3160] ------------[ cut here ]------------
[   70.972101][ T3160] DEBUG_LOCKS_WARN_ON(lock->magic != lock)
[   70.972181][ T3160] WARNING: CPU: 0 PID: 3160 at kernel/locking/mutex.c:931 __mutex_lock+0xc0b/0x1120
[   70.988753][ T3160] Modules linked in:
[   70.992666][ T3160] CPU: 0 PID: 3160 Comm: kworker/0:3 Not tainted 5.12.0-next-20210505-syzkaller #0
[   71.002963][ T3160] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   71.01