linux-kernel - Re: WARNING in iomap

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Message-Id: <20200416145811.A2FA6A4054@b06wcsmtp001.portsmouth.uk.ibm.com>
Date:   Thu, 16 Apr 2020 20:28:10 +0530
From:   Ritesh Harjani <riteshh@...ux.ibm.com>
To:     Ext4 Developers List <linux-ext4@...r.kernel.org>,
        Jan Kara <jack@...e.cz>, "Theodore Ts'o" <tytso@....edu>
Cc:     syzbot <syzbot+77fa5bdb65cc39711820@...kaller.appspotmail.com>,
        syzkaller-bugs@...glegroups.com, adilger@...ger.ca,
        darrick.wong@...cle.com, hch@...radead.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-xfs@...r.kernel.org, willy@...radead.org,
        linux-unionfs@...r.kernel.org,
        Ritesh Harjani <riteshh@...ux.ibm.com>
Subject: Re: WARNING in iomap_apply

Ok, so here is the syzbot report and the patch with which it was
tested is mentioned below.
Previous patch had some formatting issue and a semicolon missing:
(mistakenly sent out a non-tested version of the patch).

So will be sending out this tested version this time.
Sorry about the spam.

-ritesh

On 4/16/20 5:58 PM, syzbot wrote:
> Hello,
> 
> syzbot has tested the proposed patch and the reproducer did not trigger crash:
> 
> Reported-and-tested-by: syzbot+77fa5bdb65cc39711820@...kaller.appspotmail.com
> 
> Tested on:
> 
> commit:         7e634208 Merge tag 'acpi-5.7-rc1-2' of git://git.kernel.or..
> git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> kernel config:  https://syzkaller.appspot.com/x/.config?x=12205d036cec317f
> dashboard link: https://syzkaller.appspot.com/bug?extid=77fa5bdb65cc39711820
> compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
> patch:          https://syzkaller.appspot.com/x/patch.diff?x=10478f77e00000
> 
> Note: testing is done by a robot and is best-effort only.
>