Warning: Permanently added '10.128.0.188' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 22.738688][ T83] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 22.829017][ T83] usb 1-1: Using ep0 maxpacket: 8 [ 22.949262][ T83] usb 1-1: too many endpoints for config 0 interface 0 altsetting 0: 230, using maximum allowed: 30 [ 22.961158][ T83] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x85 has an invalid bInterval 0, changing to 7 [ 22.972218][ T83] usb 1-1: config 0 interface 0 altsetting 0 bulk endpoint 0x1 has invalid maxpacket 8 [ 22.982053][ T83] usb 1-1: config 0 interface 0 altsetting 0 has 2 endpoint descriptors, different from the interface descriptor's value: 230 [ 22.995288][ T83] usb 1-1: New USB device found, idVendor=091e, idProduct=0003, bcdDevice=df.c4 [ 23.004576][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 23.014641][ T83] usb 1-1: config 0 descriptor?? [ 23.039166][ T1792] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 23.060413][ T83] garmin_gps 1-1:0.0: Garmin GPS usb/tty converter detected [ 23.071438][ T83] usb 1-1: Garmin GPS usb/tty converter now attached to ttyUSB0 [ 23.268735][ C1] ================================================================== [ 23.277586][ C1] BUG: KASAN: slab-out-of-bounds in garmin_read_process+0x1b0/0x2e0 [ 23.286395][ C1] Read of size 4 at addr ffff8881ca74abe8 by task swapper/1/0 [ 23.293853][ C1] [ 23.296378][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.6.0-rc5-syzkaller #0 [ 23.304301][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 23.315044][ C1] Call Trace: [ 23.319843][ C1] [ 23.323104][ C1] dump_stack+0xef/0x16e [ 23.327932][ C1] ? garmin_read_process+0x1b0/0x2e0 [ 23.334731][ C1] ? garmin_read_process+0x1b0/0x2e0 [ 23.340548][ C1] print_address_description.constprop.0.cold+0xd3/0x314 [ 23.347925][ C1] ? garmin_read_process+0x1b0/0x2e0 [ 23.353223][ C1] ? garmin_read_process+0x1b0/0x2e0 [ 23.358866][ C1] __kasan_report.cold+0x37/0x77 [ 23.364222][ C1] ? do_raw_spin_lock+0x60/0x290 [ 23.369275][ C1] ? garmin_read_process+0x1b0/0x2e0 [ 23.375088][ C1] kasan_report+0xe/0x20 [ 23.379858][ C1] garmin_read_process+0x1b0/0x2e0 [ 23.385070][ C1] garmin_read_int_callback+0x19f/0x746 [ 23.390888][ C1] __usb_hcd_giveback_urb+0x29a/0x550 [ 23.397899][ C1] usb_hcd_giveback_urb+0x368/0x420 [ 23.403181][ C1] dummy_timer+0x1258/0x32ae [ 23.407765][ C1] ? dummy_udc_probe+0x930/0x930 [ 23.413056][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 23