Re: general protection fault in put_pid

syzbot suspects this bug was fixed by commit:

commit a8e911d13540487942d53137c156bd7707f66e5d
Author: Qian Cai [off-list ref]
Date:   Fri Feb 1 22:20:20 2019 +0000

    x86_64: increase stack size for KASAN_EXTRA

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=10364f3c600000
start commit:   f5d58277 Merge branch 'for-linus' of git://git.kernel.org/..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=c8970c89a0efbb23
dashboard link: https://syzkaller.appspot.com/bug?extid=1145ec2e23165570c3ac
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16803afb400000

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

#syz fix: x86_64: increase stack size for KASAN_EXTRA

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