syzbot suspects this issue was fixed by commit:

commit c318840fb2a42ce25febc95c4c19357acf1ae5ca
Author: Alan Stern [off-list ref]
Date:   Wed Dec 30 16:20:44 2020 +0000

    USB: Gadget: dummy-hcd: Fix shift-out-of-bounds bug

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1075dcaf500000
start commit:   fa02fcd9 Merge tag 'media/v5.10-2' of git://git.kernel.org..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=cb8d1a3819ba4356
dashboard link: https://syzkaller.appspot.com/bug?extid=c7e665956b189738fe5e
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14ba912d500000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=10dfad85500000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: USB: Gadget: dummy-hcd: Fix shift-out-of-bounds bug

For information about bisection process see: https://goo.gl/tpsmEJ#bisection