linux-kernel - Re: [PATCH v2] epic100: fix use after free on rmmod

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Date:   Tue, 28 Jun 2022 05:00:14 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Tong Zhang <ztong0001@...il.com>
Cc:     davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, f.fainelli@...il.com, jgg@...pe.ca,
        arnd@...db.de, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, yiluwu@...stonybrook.edu,
        romieu@...zoreil.com
Subject: Re: [PATCH v2] epic100: fix use after free on rmmod

Hello:

This patch was applied to netdev/net.git (master)
by Jakub Kicinski <kuba@...nel.org>:

On Sun, 26 Jun 2022 21:33:48 -0700 you wrote:
> epic_close() calls epic_rx() and uses dma buffer, but in epic_remove_one()
> we already freed the dma buffer. To fix this issue, reorder function calls
> like in the .probe function.
> 
> BUG: KASAN: use-after-free in epic_rx+0xa6/0x7e0 [epic100]
> Call Trace:
>  epic_rx+0xa6/0x7e0 [epic100]
>  epic_close+0xec/0x2f0 [epic100]
>  unregister_netdev+0x18/0x20
>  epic_remove_one+0xaa/0xf0 [epic100]
> 
> [...]

Here is the summary with links:
  - [v2] epic100: fix use after free on rmmod
    https://git.kernel.org/netdev/net/c/8ee9d82cd0a4

You are awesome, thank you!
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