Re: [syzbot] [bpf?] WARNING in bpf_mprog_pos_before

[syzbot]

syzbot has bisected this issue to:

commit e420bed025071a623d2720a92bc2245c84757ecb
Author: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
Date:   Wed Jul 19 14:08:52 2023 +0000

    bpf: Add fd-based tcx multi-prog infra with link support

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=116ab4b6680000
start commit:   a59addacf899 drivers/net: process the result of hdlc_open(..
git tree:       net
final oops:     https://syzkaller.appspot.com/x/report.txt?x=136ab4b6680000
console output: https://syzkaller.appspot.com/x/log.txt?x=156ab4b6680000
kernel config:  https://syzkaller.appspot.com/x/.config?x=d594086f139d167
dashboard link: https://syzkaller.appspot.com/bug?extid=b97d20ed568ce0951a06
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=10dc3946680000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=107f4e1e680000

Reported-by: syzbot+b97d20ed568ce0951a06@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: e420bed02507 ("bpf: Add fd-based tcx multi-prog infra with link support")

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