linux-kernel - Re: [syzbot] WARNING in bpf_prog_test_run

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Message-ID: <0000000000009fe31405d7170e81@google.com>
Date:   Wed, 02 Feb 2022 22:15:13 -0800
From:   syzbot <syzbot+79fd1ab62b382be6f337@...kaller.appspotmail.com>
To:     andrii@...nel.org, ast@...nel.org, bpf@...r.kernel.org,
        daniel@...earbox.net, davem@...emloft.net, hawk@...nel.org,
        john.fastabend@...il.com, kafai@...com, kpsingh@...nel.org,
        kuba@...nel.org, linux-kernel@...r.kernel.org, lorenzo@...nel.org,
        netdev@...r.kernel.org, songliubraving@...com,
        syzkaller-bugs@...glegroups.com, toke@...hat.com, yhs@...com
Subject: Re: [syzbot] WARNING in bpf_prog_test_run_xdp

syzbot has bisected this issue to:

commit 1c194998252469cad00a08bd9ef0b99fd255c260
Author: Lorenzo Bianconi <lorenzo@...nel.org>
Date:   Fri Jan 21 10:09:58 2022 +0000

    bpf: introduce frags support to bpf_prog_test_run_xdp()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=16d81634700000
start commit:   000fe940e51f sfc: The size of the RX recycle ring should b..
git tree:       net-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=15d81634700000
console output: https://syzkaller.appspot.com/x/log.txt?x=11d81634700000
kernel config:  https://syzkaller.appspot.com/x/.config?x=e029d3b2ccd4c91a
dashboard link: https://syzkaller.appspot.com/bug?extid=79fd1ab62b382be6f337
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12a719cc700000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15851cec700000

Reported-by: syzbot+79fd1ab62b382be6f337@...kaller.appspotmail.com
Fixes: 1c1949982524 ("bpf: introduce frags support to bpf_prog_test_run_xdp()")

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