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

[syzbot]

Hello,

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

Reported-and-tested-by:
syzbot+495dab...@syzkaller.appspotmail.com

Tested on:

commit: b1aa9d83 usb: raw: add raw-gadget interface
git tree: https://github.com/google/kasan.git
kernel config: https://syzkaller.appspot.com/x/.config?x=c867e205f8740cbc
dashboard link: https://syzkaller.appspot.com/bug?extid=495dab1f175edc9c2f13
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
patch: https://syzkaller.appspot.com/x/patch.diff?x=17fed6ece00000

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