linux-kernel - Re: suspicious RCU usage at ./include/net/inet

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Date:   Thu, 07 Nov 2019 05:42:04 -0800
From:   syzbot 
        <syzbot+79de6f09efc55fec084b706de3c91e9457433ac5@...kaller.appspotmail.com>
To:     davem@...emloft.net, dccp@...r.kernel.org, dvyukov@...gle.com,
        ebiggers3@...il.com, gerrit@....abdn.ac.uk, jon.maloy@...csson.com,
        kuznet@....inr.ac.ru, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, parthasarathy.bhuvaragan@...csson.com,
        syzkaller-bugs@...glegroups.com,
        tipc-discussion@...ts.sourceforge.net, ying.xue@...driver.com,
        yoshfuji@...ux-ipv6.org
Subject: Re: suspicious RCU usage at ./include/net/inet_sock.h:LINE

syzbot suspects this bug was fixed by commit:

commit 3f32d0be6c16b902b687453c962d17eea5b8ea19
Author: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@...csson.com>
Date:   Tue Sep 25 20:09:10 2018 +0000

     tipc: lock wakeup & inputq at tipc_link_reset()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1368cfa2600000
start commit:   464e1d5f
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=bace9f7ec244b823
dashboard link:  
https://syzkaller.appspot.com/bug?extid=79de6f09efc55fec084b706de3c91e9457433ac5
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=126079e1800000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=101499e1800000

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

#syz fix: tipc: lock wakeup & inputq at tipc_link_reset()

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