linux-kernel - Re: [syzbot] [net?] WARNING: suspicious RCU usage in corrupted (3)

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Message-ID: <68bf3893.050a0220.192772.0885.GAE@google.com>
Date: Mon, 08 Sep 2025 13:12:03 -0700
From: syzbot <syzbot+9767c7ed68b95cfa69e6@...kaller.appspotmail.com>
To: alexei.starovoitov@...il.com, andrii@...nel.org, ast@...nel.org, 
	bpf@...r.kernel.org, charmitro@...teo.net, daniel@...earbox.net, 
	davem@...emloft.net, eddyz87@...il.com, edumazet@...gle.com, 
	haoluo@...gle.com, horms@...nel.org, jiayuan.chen@...ux.dev, 
	john.fastabend@...il.com, jolsa@...nel.org, kpsingh@...nel.org, 
	kuba@...nel.org, linux-kernel@...r.kernel.org, 
	linux-kselftest@...r.kernel.org, martin.lau@...ux.dev, mykolal@...com, 
	netdev@...r.kernel.org, pabeni@...hat.com, sdf@...ichev.me, shuah@...nel.org, 
	song@...nel.org, syzkaller-bugs@...glegroups.com, tj@...nel.org, 
	yangfeng@...inos.cn, yonghong.song@...ux.dev
Subject: Re: [syzbot] [net?] WARNING: suspicious RCU usage in corrupted (3)

syzbot suspects this issue was fixed by commit:

commit 7f12c33850482521c961c5c15a50ebe9b9a88d1e
Author: Charalampos Mitrodimas <charmitro@...teo.net>
Date:   Wed Jun 11 17:20:43 2025 +0000

    net, bpf: Fix RCU usage in task_cls_state() for BPF programs

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=13745562580000
start commit:   079e5c56a5c4 bpf: Fix error return value in bpf_copy_from_..
git tree:       bpf-next
kernel config:  https://syzkaller.appspot.com/x/.config?x=c6c517d2f439239
dashboard link: https://syzkaller.appspot.com/bug?extid=9767c7ed68b95cfa69e6
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=114915f4580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15566170580000

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

#syz fix: net, bpf: Fix RCU usage in task_cls_state() for BPF programs

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