Re: [syzbot] KASAN: use-after-free Read in driver_register

[syzbot]

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-and-tested-by: syzbot+dc7c3ca638e773db07f6@xxxxxxxxxxxxxxxxxxxxxxxxx

Tested on:

commit:         97fa5887 USB: new quirk for Dell Gen 2 devices
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
kernel config:  https://syzkaller.appspot.com/x/.config?x=5a0efc262ca60947
dashboard link: https://syzkaller.appspot.com/bug?extid=dc7c3ca638e773db07f6
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
patch:          https://syzkaller.appspot.com/x/patch.diff?x=1224de7bf00000

Note: testing is done by a robot and is best-effort only.