linux-kernel - Re: [syzbot] [netfilter?] INFO: rcu detected stall in gc

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Message-ID: <000000000000a87e66060618bb7e@google.com>
Date:   Sun, 24 Sep 2023 03:59:17 -0700
From:   syzbot <syzbot+eec403943a2a2455adaa@...kaller.appspotmail.com>
To:     bpf@...r.kernel.org, coreteam@...filter.org, davem@...emloft.net,
        dvyukov@...gle.com, edumazet@...gle.com, fw@...len.de,
        gautamramk@...il.com, hdanton@...a.com, jhs@...atatu.com,
        jiri@...nulli.us, kadlec@...filter.org, kuba@...nel.org,
        lesliemonis@...il.com, linux-kernel@...r.kernel.org,
        mohitbhasi1998@...il.com, netdev@...r.kernel.org,
        netfilter-devel@...r.kernel.org, pabeni@...hat.com,
        pablo@...filter.org, paulmck@...nel.org, sdp.sachin@...il.com,
        syzkaller-bugs@...glegroups.com, tahiliani@...k.edu.in,
        tglx@...utronix.de, vsaicharan1998@...il.com,
        xiyou.wangcong@...il.com
Subject: Re: [syzbot] [netfilter?] INFO: rcu detected stall in gc_worker (3)

syzbot has bisected this issue to:

commit ec97ecf1ebe485a17cd8395a5f35e6b80b57665a
Author: Mohit P. Tahiliani <tahiliani@...k.edu.in>
Date:   Wed Jan 22 18:22:33 2020 +0000

    net: sched: add Flow Queue PIE packet scheduler

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=15c5748e680000
start commit:   d4a7ce642100 igc: Fix Kernel Panic during ndo_tx_timeout c..
git tree:       net
final oops:     https://syzkaller.appspot.com/x/report.txt?x=17c5748e680000
console output: https://syzkaller.appspot.com/x/log.txt?x=13c5748e680000
kernel config:  https://syzkaller.appspot.com/x/.config?x=77b9a3cf8f44c6da
dashboard link: https://syzkaller.appspot.com/bug?extid=eec403943a2a2455adaa
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1504b511a80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=137bf931a80000

Reported-by: syzbot+eec403943a2a2455adaa@...kaller.appspotmail.com
Fixes: ec97ecf1ebe4 ("net: sched: add Flow Queue PIE packet scheduler")

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