Re: KASAN: use-after-free Read in vhci_hub_control

[syzbot]

syzbot suspects this bug was fixed by commit:

commit 81f7567c51ad97668d1c3a48e8ecc482e64d4161
Author: Shuah Khan (Samsung OSG) <shuah@xxxxxxxxxx>
Date:   Fri Oct 5 22:17:44 2018 +0000

    usb: usbip: Fix BUG: KASAN: slab-out-of-bounds in vhci_hub_control()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14046c2c600000
start commit:   420f51f4 Merge tag 'arm64-fixes' of git://git.kernel.org/p..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=531a917630d2a492
dashboard link: https://syzkaller.appspot.com/bug?extid=600b03e0cf1b73bb23c4
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1116710a400000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=119be4ea400000

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

#syz fix: usb: usbip: Fix BUG: KASAN: slab-out-of-bounds in  
vhci_hub_control()

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