linux-kernel - Re: [PATCH net v2 1/1] net: stmmac: fix kernel panic due to NULL pointer dereference of buf->xdp

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Message-Id: <162988620630.3256.11386363919352017742.git-patchwork-notify@kernel.org>
Date:   Wed, 25 Aug 2021 10:10:06 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Song Yoong Siang <yoong.siang.song@...el.com>
Cc:     ast@...nel.org, daniel@...earbox.net, davem@...emloft.net,
        kuba@...nel.org, hawk@...nel.org, john.fastabend@...il.com,
        peppe.cavallaro@...com, alexandre.torgue@...com,
        joabreu@...opsys.com, mcoquelin.stm32@...il.com,
        boon.leong.ong@...el.com, netdev@...r.kernel.org,
        bpf@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org
Subject: Re: [PATCH net v2 1/1] net: stmmac: fix kernel panic due to NULL pointer
 dereference of buf->xdp

Hello:

This patch was applied to netdev/net.git (refs/heads/master):

On Wed, 25 Aug 2021 08:57:42 +0800 you wrote:
> Ensure a valid XSK buffer before proceed to free the xdp buffer.
> 
> The following kernel panic is observed without this patch:
> 
> RIP: 0010:xp_free+0x5/0x40
> Call Trace:
> stmmac_napi_poll_rxtx+0x332/0xb30 [stmmac]
> ? stmmac_tx_timer+0x3c/0xb0 [stmmac]
> net_rx_action+0x13d/0x3d0
> __do_softirq+0xfc/0x2fb
> ? smpboot_register_percpu_thread+0xe0/0xe0
> run_ksoftirqd+0x32/0x70
> smpboot_thread_fn+0x1d8/0x2c0
> kthread+0x169/0x1a0
> ? kthread_park+0x90/0x90
> ret_from_fork+0x1f/0x30
> 
> [...]

Here is the summary with links:
  - [net,v2,1/1] net: stmmac: fix kernel panic due to NULL pointer dereference of buf->xdp
    https://git.kernel.org/netdev/net/c/2b9fff64f032

You are awesome, thank you!
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