lost connection to test machine wPixel XL

[dar...@gmail.com]

Hi all, I know it says in the doc that using the standard USB cable that comes with Android will cause stability issues, but I just want to make sure the following is expected:

2017/10/14 12:39:10 vm-0: crash: lost connection to test machine

2017/10/14 12:39:12 executed programs: 8035, crashes: 89

2017/10/14 12:39:22 executed programs: 8035, crashes: 89

2017/10/14 12:39:32 executed programs: 8035, crashes: 89

2017/10/14 12:39:42 executed programs: 8035, crashes: 89

2017/10/14 12:39:52 executed programs: 8035, crashes: 89

2017/10/14 12:39:53 device HT75Z0201325: battery level 82%, OK

2017/10/14 12:39:55 vm-0: crash: lost connection to test machine

2017/10/14 12:40:02 executed programs: 8035, crashes: 90

2017/10/14 12:40:12 executed programs: 8035, crashes: 90

2017/10/14 12:40:22 executed programs: 8035, crashes: 90

2017/10/14 12:40:32 executed programs: 8035, crashes: 90

2017/10/14 12:40:35 device HT75Z0201325: battery level 82%, OK

2017/10/14 12:40:38 vm-0: crash: lost connection to test machine

2017/10/14 12:40:42 executed programs: 8035, crashes: 91

2017/10/14 12:40:52 executed programs: 8035, crashes: 91

2017/10/14 12:41:02 executed programs: 8035, crashes: 91

2017/10/14 12:41:12 executed programs: 8035, crashes: 91

2017/10/14 12:41:20 device HT75Z0201325: battery level 82%, OK

2017/10/14 12:41:21 vm-0: crash: lost connection to test machine

2017/10/14 12:41:22 executed programs: 8035, crashes: 92

2017/10/14 12:41:32 executed programs: 8035, crashes: 92

2017/10/14 12:41:42 executed programs: 8035, crashes: 92

2017/10/14 12:41:52 executed programs: 8035, crashes: 92

It seems pretty stable that it loses connection every 3 or 4 times it gives a status update on the number of programs ran. Is this expected when using the USB cable,  or is there something else wrong that needs looking at? For the most part, everything else is running great! Syzkaller is awesome :)

Thanks guys

[Dmitry Vyukov]

What's in workdir/crashes/*/logN files? There must be some info about
what caused the lost connection.
Also please run syz-manager with -debug flag and post output.

[yuki]

For Pixel Devices you can use a USB2UART cable to get serial console log from audio jack port, instead of `adb shell dmesg`