Re: memory leak in __nf_hook_entries_try_shrink

syzbot has bisected this bug to:

commit fc79168a7c75423047d60a033dc4844955ccae0b
Author: Helge Deller [off-list ref]
Date:   Wed Apr 13 20:44:54 2016 +0000

     parisc: Add syscall tracepoint support

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=16ad2cd8600000
start commit:   b076173a Merge tag 'selinux-pr-20190612' of git://git.kern..
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=15ad2cd8600000
console output: https://syzkaller.appspot.com/x/log.txt?x=11ad2cd8600000
kernel config:  https://syzkaller.appspot.com/x/.config?x=cb38d33cd06d8d48
dashboard link: https://syzkaller.appspot.com/bug?extid=c51f73e78e7e2ce3a31e
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=105a958ea00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=103c758ea00000

Reported-by: syzbot+c51f73e78e7e2ce3a31e@syzkaller.appspotmail.com
Fixes: fc79168a7c75 ("parisc: Add syscall tracepoint support")

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