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

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Date: Wed, 06 Mar 2024 14:38:02 -0800
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, 
	michal.kubiak@...el.com, 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 suspects this issue was fixed by commit:

commit 8c21ab1bae945686c602c5bfa4e3f3352c2452c5
Author: Eric Dumazet <edumazet@...gle.com>
Date:   Tue Aug 29 12:35:41 2023 +0000

    net/sched: fq_pie: avoid stalls in fq_pie_timer()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1338df0e180000
start commit:   d4a7ce642100 igc: Fix Kernel Panic during ndo_tx_timeout c..
git tree:       net
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

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

#syz fix: net/sched: fq_pie: avoid stalls in fq_pie_timer()

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