netdev - Re: [syzbot] WARNING in cpuset_write

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Date:   Mon, 21 Feb 2022 19:28:09 -0800
From:   syzbot <syzbot+568dc81cd20b72d4a49f@...kaller.appspotmail.com>
To:     cgroups@...r.kernel.org, changbin.du@...el.com,
        christian.brauner@...ntu.com, davem@...emloft.net,
        edumazet@...gle.com, hannes@...xchg.org, hkallweit1@...il.com,
        kuba@...nel.org, linux-kernel@...r.kernel.org,
        lizefan.x@...edance.com, netdev@...r.kernel.org,
        syzkaller-bugs@...glegroups.com, tj@...nel.org,
        yajun.deng@...ux.dev
Subject: Re: [syzbot] WARNING in cpuset_write_resmask

syzbot has bisected this issue to:

commit e4b8954074f6d0db01c8c97d338a67f9389c042f
Author: Eric Dumazet <edumazet@...gle.com>
Date:   Tue Dec 7 01:30:37 2021 +0000

    netlink: add net device refcount tracker to struct ethnl_req_info

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=15c42532700000
start commit:   e5313968c41b Merge branch 'Split bpf_sk_lookup remote_port..
git tree:       bpf-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=17c42532700000
console output: https://syzkaller.appspot.com/x/log.txt?x=13c42532700000
kernel config:  https://syzkaller.appspot.com/x/.config?x=c40b67275bfe2a58
dashboard link: https://syzkaller.appspot.com/bug?extid=568dc81cd20b72d4a49f
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13bb97ce700000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12062c8e700000

Reported-by: syzbot+568dc81cd20b72d4a49f@...kaller.appspotmail.com
Fixes: e4b8954074f6 ("netlink: add net device refcount tracker to struct ethnl_req_info")

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