linux-kernel - Re: WARNING in is_bpf_text

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Message-ID: <000000000000104b00058c61eda4@google.com>
Date:   Fri, 28 Jun 2019 06:05:00 -0700
From:   syzbot <syzbot+bd3bba6ff3fcea7a6ec6@...kaller.appspotmail.com>
To:     akpm@...ux-foundation.org, ast@...nel.org, bpf@...r.kernel.org,
        bvanassche@....org, daniel@...earbox.net, davem@...emloft.net,
        hawk@...nel.org, jakub.kicinski@...ronome.com,
        johannes.berg@...el.com, johannes@...solutions.net,
        john.fastabend@...il.com, kafai@...com,
        linux-kernel@...r.kernel.org, longman@...hat.com, mingo@...nel.org,
        netdev@...r.kernel.org, paulmck@...ux.vnet.ibm.com,
        peterz@...radead.org, songliubraving@...com,
        syzkaller-bugs@...glegroups.com, tglx@...utronix.de, tj@...nel.org,
        torvalds@...ux-foundation.org, will.deacon@....com,
        xdp-newbies@...r.kernel.org, yhs@...com
Subject: Re: WARNING in is_bpf_text_address

syzbot has bisected this bug to:

commit a0b0fd53e1e67639b303b15939b9c653dbe7a8c4
Author: Bart Van Assche <bvanassche@....org>
Date:   Thu Feb 14 23:00:46 2019 +0000

     locking/lockdep: Free lock classes that are no longer in use

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=152f6a9da00000
start commit:   abf02e29 Merge tag 'pm-5.2-rc6' of git://git.kernel.org/pu..
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=172f6a9da00000
console output: https://syzkaller.appspot.com/x/log.txt?x=132f6a9da00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=28ec3437a5394ee0
dashboard link: https://syzkaller.appspot.com/bug?extid=bd3bba6ff3fcea7a6ec6
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14ae828aa00000

Reported-by: syzbot+bd3bba6ff3fcea7a6ec6@...kaller.appspotmail.com
Fixes: a0b0fd53e1e6 ("locking/lockdep: Free lock classes that are no longer  
in use")

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