linux-kernel - Re: [syzbot] [rdma?] WARNING in gid_table_release

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Message-ID: <6f3b9149-2a2d-4532-b38f-946b98e72000@linux.dev>
Date: Fri, 12 Sep 2025 12:38:05 -0700
From: "yanjun.zhu" <yanjun.zhu@...ux.dev>
To: syzbot <syzbot+b0da83a6c0e2e2bddbd4@...kaller.appspotmail.com>,
 edwards@...dia.com, hdanton@...a.com, jgg@...pe.ca, leon@...nel.org,
 leonro@...dia.com, linux-kernel@...r.kernel.org, linux-rdma@...r.kernel.org,
 syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [rdma?] WARNING in gid_table_release_one (3)

On 9/11/25 9:42 PM, syzbot wrote:
> syzbot has bisected this issue to:
> 
> commit a92fbeac7e94a420b55570c10fe1b90e64da4025
> Author: Leon Romanovsky <leonro@...dia.com>
> Date:   Tue May 28 12:52:51 2024 +0000
> 
>      RDMA/cache: Release GID table even if leak is detected

Maybe this commit just detects ref leaks and reports ref leak.
Even though this commit is reverted, this ref leak still occurs.

The root cause is not in this commit.

"
GID entry ref leak for dev syz1 index 2 ref=615
"

Ref leaks in dev syz1.

Zhu Yanjun

> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=13fc9642580000
> start commit:   5f540c4aade9 Add linux-next specific files for 20250910
> git tree:       linux-next
> final oops:     https://syzkaller.appspot.com/x/report.txt?x=10029642580000
> console output: https://syzkaller.appspot.com/x/log.txt?x=17fc9642580000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=5ed48faa2cb8510d
> dashboard link: https://syzkaller.appspot.com/bug?extid=b0da83a6c0e2e2bddbd4
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15b52362580000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16b41642580000
> 
> Reported-by: syzbot+b0da83a6c0e2e2bddbd4@...kaller.appspotmail.com
> Fixes: a92fbeac7e94 ("RDMA/cache: Release GID table even if leak is detected")
> 
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection