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

[syzbot]

syzbot has bisected this bug to:

commit c8c8218ec5af5d2598381883acbefbf604e56b5e
Author: Cong Wang <xiyou.wangcong@xxxxxxxxx>
Date:   Thu Jun 27 21:30:58 2019 +0000

    netrom: fix a memory leak in nr_rx_frame()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=10a3bcd0600000
start commit:   192f0f8e Merge tag 'powerpc-5.3-1' of git://git.kernel.org..
git tree:       net-next
final crash:    https://syzkaller.appspot.com/x/report.txt?x=12a3bcd0600000
console output: https://syzkaller.appspot.com/x/log.txt?x=14a3bcd0600000
kernel config:  https://syzkaller.appspot.com/x/.config?x=87305c3ca9c25c70
dashboard link: https://syzkaller.appspot.com/bug?extid=6eaef7158b19e3fec3a0
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15882cd0600000

Reported-by: syzbot+6eaef7158b19e3fec3a0@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: c8c8218ec5af ("netrom: fix a memory leak in nr_rx_frame()")

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