Re: KASAN: slab-out-of-bounds Read in bitmap_ip_ext_cleanup

On Sun, Jan 19, 2020 at 05:35:01PM -0800, syzbot wrote:

syzbot has bisected this bug to:

commit d68dbb0c9ac8b1ff52eb09aa58ce6358400fa939 Author: Christian Brauner christian@brauner.io Date: Thu Jun 20 23:26:35 2019 +0000

arch: handle arches who do not yet define clone3

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1456fed1e00000 start commit: 09d4f10a net: sched: act_ctinfo: fix memory leak git tree: net final crash: https://syzkaller.appspot.com/x/report.txt?x=1656fed1e00000 console output: https://syzkaller.appspot.com/x/log.txt?x=1256fed1e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=7e89bd00623fe71e dashboard link: https://syzkaller.appspot.com/bug?extid=6491ea8f6dddbf04930e syz repro: https://syzkaller.appspot.com/x/repro.syz?x=141af959e00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1067fa85e00000

Reported-by: syzbot+6491ea8f6dddbf04930e@syzkaller.appspotmail.com Fixes: d68dbb0c9ac8 ("arch: handle arches who do not yet define clone3")

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

This bisect seems bogus.

Christian