Bisection is inconclusive: the bug happens on the oldest tested release.
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14fb90ef200000 start commit: [unknown git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=16fb90ef200000 console output: https://syzkaller.appspot.com/x/log.txt?x=12fb90ef200000 dashboard link: https://syzkaller.appspot.com/bug?extid=55f9d3e51d49e20b2ce5 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=109c886cc00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11ed20d0c00000 For information about bisection process see: https://goo.gl/tpsmEJ#bisection