linux-kernel - RE: INFO: trying to register non-static key in skb

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Date: Thu, 23 May 2024 03:05:13 +0000
From: Ping-Ke Shih <pkshih@...ltek.com>
To: Shichao Lai <phyhac@...il.com>, Kalle Valo <kvalo@...nel.org>,
        "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "syzkaller@...glegroups.com" <syzkaller@...glegroups.com>
Subject: RE: INFO: trying to register non-static key in skb_dequeue

Shichao Lai <phyhac@...il.com>  wrote:
> Hello Dear maintainer!
> A new bug was found by our modified syzkaller.
> 
> Kernel version: v6.9-rc7
> Compiler: gcc 11.4.0
> Reproducer & Kernel: attachment 
> 
> ============= 
> usb 2-1: USB disconnect, device number 76
> INFO: trying to register non-static key.
> The code is fine but needs lockdep annotation, or maybe
> you didn't initialize this object before use?
> turning off the locking correctness validator.

I'm not familiar with syzkaller, which seems like to generate a USB pattern
to trigger driver probe, not a real hardware. If my thought is correct,
attachment could be a fix that causes failed to probe device, and then
not execute USB disconnection. 

I used your attached linux-v6.9_usb_config to build a kernel, but failed
to run on a real NB. So is it possible to help test my attached patch?
Or, can I use a " #syz test:" command to trigger robot like [1]?

[1] https://lore.kernel.org/linux-rdma/3cc9f12a-d680-e05c-72c6-d4cb559fe5ee@linux.dev/T/#m2d374949d62b017074545c2f2a1df9251e0bde32

Ping-Ke


Download attachment "0001-wifi-rtlwifi-handle-return-value-of-usb-init-TX-RX.patch" of type "application/octet-stream" (5123 bytes)