netdev - Fw: [Bug 216694] New: [Syzkaller & bisect] There is inet_csk_get

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Date:   Wed, 16 Nov 2022 09:12:53 -0800
From:   Kuniyuki Iwashima <kuniyu@...zon.com>
To:     <stephen@...workplumber.org>
CC:     <netdev@...r.kernel.org>
Subject: Fw: [Bug 216694] New: [Syzkaller & bisect] There is inet_csk_get_port WARNING in v6.1-rc4 kernel

From:   Stephen Hemminger <stephen@...workplumber.org>
Date:   Wed, 16 Nov 2022 08:58:54 -0800
> Begin forwarded message:
> 
> Date: Wed, 16 Nov 2022 08:44:26 +0000
> From: bugzilla-daemon@...nel.org
> To: stephen@...workplumber.org
> Subject: [Bug 216694] New: [Syzkaller & bisect] There is inet_csk_get_port WARNING in v6.1-rc4 kernel
> 
> 
> https://bugzilla.kernel.org/show_bug.cgi?id=216694
> 
>             Bug ID: 216694
>            Summary: [Syzkaller & bisect] There is inet_csk_get_port
>                     WARNING in v6.1-rc4 kernel
>            Product: Networking
>            Version: 2.5
>     Kernel Version: v6.1-rc4
>           Hardware: All
>                 OS: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: normal
>           Priority: P1
>          Component: Other
>           Assignee: stephen@...workplumber.org
>           Reporter: pengfei.xu@...el.com
>         Regression: No
> 
> "WARNING inet_csk_get_port" is found in v6.1-rc4 kernel.
> 
> And first bad commit is: 28044fc1d4953b07acec0da4d2fc4784c57ea6fb
> "net: Add a bhash2 table hashed by port and address"
> 
> Reproduced code from syzkaller, kconfig and full information is in the link:
> https://github.com/xupengfe/syzkaller_logs/tree/main/221108_215733_inet_csk_get_port
> 
> 
> Related discusstion link in LKML community:
> https://lore.kernel.org/lkml/Y2xyHM1fcCkh9AKU@xpf.sh.intel.com/

I'm working on the issue and will post a fix.

https://lore.kernel.org/netdev/20221110201925.96741-1-kuniyu@amazon.com/
https://lore.kernel.org/netdev/20221110203432.97668-1-kuniyu@amazon.com/

Thank you!