linux-kernel - Re: [syzbot] [erofs?] WARNING in erofs

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Message-ID: <f8f431a2-82a5-4f88-884e-71e0b0351328@linux.alibaba.com>
Date: Thu, 5 Feb 2026 13:53:58 +0800
From: Gao Xiang <hsiangkao@...ux.alibaba.com>
To: syzbot <syzbot+c2dd47dc153320cc4692@...kaller.appspotmail.com>,
 linux-erofs@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
 syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [erofs?] WARNING in erofs_iget (2)



On 2026/2/5 10:27, syzbot wrote:
> Hello,
> 
> syzbot has tested the proposed patch and the reproducer did not trigger any issue:
> 
> Reported-by: syzbot+c2dd47dc153320cc4692@...kaller.appspotmail.com
> Tested-by: syzbot+c2dd47dc153320cc4692@...kaller.appspotmail.com
> 
> Tested on:
> 
> commit:         1ec50c08 erofs: update compression algorithm status
> git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git dev-test
> console output: https://syzkaller.appspot.com/x/log.txt?x=119f5a5a580000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=2168d83cc33f9cb6
> dashboard link: https://syzkaller.appspot.com/bug?extid=c2dd47dc153320cc4692
> compiler:       Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
> 
> Note: no patches were applied.
> Note: testing is done by a robot and is best-effort only.

#syz invalid

The issue was valid but introduced by a new commit only
in linux-next:
erofs: use inode_set_cached_link()

PATCH v2 already fixes this issue.