linux-kernel - Re: [PATCH net] ax25: Fix refcount leak issues of ax25

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Date: Fri, 3 May 2024 19:40:32 -0400
From: Lars Kellogg-Stedman <lars@...bit.com>
To: Dan Carpenter <dan.carpenter@...aro.org>
Cc: Duoming Zhou <duoming@....edu.cn>, linux-hams@...r.kernel.org, 
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org, pabeni@...hat.com, kuba@...nel.org, 
	edumazet@...gle.com, davem@...emloft.net, jreuter@...na.de
Subject: Re: [PATCH net] ax25: Fix refcount leak issues of ax25_dev

On Fri, May 03, 2024 at 11:36:37PM +0300, Dan Carpenter wrote:
> Could you test this diff?

With that diff applied, there is no kernel panic, but I see the same
refcount errors that I saw before the latest series of patches from
Duoming:

  refcount_t: decrement hit 0; leaking memory.
  refcount_t: underflow; use-after-free.

-- 
Lars Kellogg-Stedman <lars@...bit.com> | larsks @ {irc,twitter,github}
http://blog.oddbit.com/                | N1LKS