linux-kernel - Re: WARNING in bdev

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Message-ID: <20191119054425.GO163020@sol.localdomain>
Date:   Mon, 18 Nov 2019 21:44:25 -0800
From:   Eric Biggers <ebiggers@...nel.org>
To:     syzbot <syzbot+787bcbef9b5fec61944b@...kaller.appspotmail.com>
Cc:     alexander.levin@...rosoft.com, davem@...emloft.net,
        devel@...verdev.osuosl.org, gregkh@...uxfoundation.org,
        linux-kernel@...r.kernel.org, mchehab+samsung@...nel.org,
        paulmck@...ux.ibm.com, syzkaller-bugs@...glegroups.com,
        valdis.kletnieks@...edu
Subject: Re: WARNING in bdev_read

On Thu, Oct 17, 2019 at 10:02:07AM -0700, syzbot wrote:
> Hello,
> 
> syzbot found the following crash on:
> 
> HEAD commit:    bc88f85c kthread: make __kthread_queue_delayed_work static
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=14e25608e00000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=e0ac4d9b35046343
> dashboard link: https://syzkaller.appspot.com/bug?extid=787bcbef9b5fec61944b
> compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=159fd353600000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=17e82173600000
> 
> The bug was bisected to:
> 
> commit c48c9f7ff32b8b3965a08e40eb6763682d905b5d
> Author: Valdis Klētnieks <valdis.kletnieks@...edu>
> Date:   Wed Aug 28 16:08:17 2019 +0000
> 
>     staging: exfat: add exfat filesystem code to staging

This bisection looks correct.

On a related topic: it seems the exfat filesystem is missing a mailing list.

- Eric