netdev - Re: [PATCH net] NFC: netlink: fix sleep in atomic bug when firmware download timeout

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Date:   Thu, 05 May 2022 08:50:12 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Duoming Zhou <duoming@....edu.cn>
Cc:     krzysztof.kozlowski@...aro.org, linux-kernel@...r.kernel.org,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, netdev@...r.kernel.org
Subject: Re: [PATCH net] NFC: netlink: fix sleep in atomic bug when firmware
 download timeout

Hello:

This patch was applied to netdev/net.git (master)
by Paolo Abeni <pabeni@...hat.com>:

On Wed,  4 May 2022 13:58:47 +0800 you wrote:
> There are sleep in atomic bug that could cause kernel panic during
> firmware download process. The root cause is that nlmsg_new with
> GFP_KERNEL parameter is called in fw_dnld_timeout which is a timer
> handler. The call trace is shown below:
> 
> BUG: sleeping function called from invalid context at include/linux/sched/mm.h:265
> Call Trace:
> kmem_cache_alloc_node
> __alloc_skb
> nfc_genl_fw_download_done
> call_timer_fn
> __run_timers.part.0
> run_timer_softirq
> __do_softirq
> ...
> 
> [...]

Here is the summary with links:
  - [net] NFC: netlink: fix sleep in atomic bug when firmware download timeout
    https://git.kernel.org/netdev/net/c/4071bf121d59

You are awesome, thank you!
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