linux-kernel - Re: [syzbot] general protection fault in set_task

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Message-ID: <00000000000066073805d3a4f598@google.com>
Date:   Tue, 21 Dec 2021 01:52:08 -0800
From:   syzbot <syzbot+8836466a79f4175961b0@...kaller.appspotmail.com>
To:     axboe@...nel.dk, changbin.du@...el.com,
        christian.brauner@...ntu.com, daniel@...earbox.net,
        davem@...emloft.net, edumazet@...gle.com, hkallweit1@...il.com,
        kuba@...nel.org, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        syzkaller-bugs@...glegroups.com, yajun.deng@...ux.dev
Subject: Re: [syzbot] general protection fault in set_task_ioprio

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=10620fcdb00000
start commit:   07f8c60fe60f Add linux-next specific files for 20211220
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=12620fcdb00000
console output: https://syzkaller.appspot.com/x/log.txt?x=14620fcdb00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=2060504830b9124a
dashboard link: https://syzkaller.appspot.com/bug?extid=8836466a79f4175961b0
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12058fcbb00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=17141adbb00000

Reported-by: syzbot+8836466a79f4175961b0@...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