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Message-ID: <aYw97hffWIoiQQGH@li-dc0c254c-257c-11b2-a85c-98b6c1322444.ibm.com>
Date: Wed, 11 Feb 2026 13:59:34 +0530
From: Ojaswin Mujoo <ojaswin@...ux.ibm.com>
To: syzbot <syzbot+ccf1421545dbe5caa20c@...kaller.appspotmail.com>
Cc: adilger.kernel@...ger.ca, linux-ext4@...r.kernel.org,
        linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com,
        tytso@....edu
Subject: Re: [syzbot] [ext4?] kernel BUG in ext4_es_cache_extent (4)

On Tue, Feb 10, 2026 at 12:54:03PM -0800, syzbot wrote:
> Hello,
> 
> syzbot has tested the proposed patch and the reproducer did not trigger any issue:
> 
> Reported-by: syzbot+ccf1421545dbe5caa20c@...kaller.appspotmail.com
> Tested-by: syzbot+ccf1421545dbe5caa20c@...kaller.appspotmail.com
> 
> Tested on:
> 
> commit:         4f5e8e6f et4: allow zeroout when doing written to unwr..
> git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git dev
> console output: https://syzkaller.appspot.com/x/log.txt?x=15739b22580000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=a535ad5429f72a2
> dashboard link: https://syzkaller.appspot.com/bug?extid=ccf1421545dbe5caa20c
> compiler:       Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
> patch:          https://syzkaller.appspot.com/x/patch.diff?x=12d6f33a580000
> 
> Note: testing is done by a robot and is best-effort only.

#syz test: https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git dev


View attachment "0001-ext4-add-logging-to-debug-issue.patch" of type "text/plain" (6801 bytes)

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