linux-kernel - Re: WARNING in rcu_check_gp_start

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Date:   Sun, 17 Mar 2019 03:43:01 -0700
From:   syzbot <syzbot+111bc509cd9740d7e4aa@...kaller.appspotmail.com>
To:     bp@...en8.de, devel@...verdev.osuosl.org,
        douly.fnst@...fujitsu.com, dvyukov@...gle.com,
        forest@...ttletooquiet.net, gregkh@...uxfoundation.org,
        hpa@...or.com, konrad.wilk@...cle.com, len.brown@...el.com,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org, mingo@...hat.com,
        peterz@...radead.org, puwen@...on.cn,
        syzkaller-bugs@...glegroups.com, tglx@...utronix.de,
        tvboxspy@...il.com, wang.yi59@....com.cn, x86@...nel.org
Subject: Re: WARNING in rcu_check_gp_start_stall

syzbot has bisected this bug to:

commit f1e3e92135202ff3d95195393ee62808c109208c
Author: Malcolm Priestley <tvboxspy@...il.com>
Date:   Wed Jul 22 18:16:42 2015 +0000

     staging: vt6655: fix tagSRxDesc -> next_desc type

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=111856cf200000
start commit:   f1e3e921 staging: vt6655: fix tagSRxDesc -> next_desc type
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=131856cf200000
console output: https://syzkaller.appspot.com/x/log.txt?x=151856cf200000
kernel config:  https://syzkaller.appspot.com/x/.config?x=7132344728e7ec3f
dashboard link: https://syzkaller.appspot.com/bug?extid=111bc509cd9740d7e4aa
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16d4966cc00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=10c492d0c00000

Reported-by: syzbot+111bc509cd9740d7e4aa@...kaller.appspotmail.com
Fixes: f1e3e921 ("staging: vt6655: fix tagSRxDesc -> next_desc type")