linux-kernel - Re: brcmfmac: pcie: fix oops on failure to resume and reprobe

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Message-Id: <20210829114547.76F0BC4361B@smtp.codeaurora.org>
Date:   Sun, 29 Aug 2021 11:45:47 +0000 (UTC)
From:   Kalle Valo <kvalo@...eaurora.org>
To:     Ahmad Fatoum <a.fatoum@...gutronix.de>
Cc:     Arend van Spriel <aspriel@...il.com>,
        Franky Lin <franky.lin@...adcom.com>,
        Hante Meuleman <hante.meuleman@...adcom.com>,
        Chi-hsien Lin <chi-hsien.lin@...ineon.com>,
        Wright Feng <wright.feng@...ineon.com>,
        Chung-hsien Hsu <chung-hsien.hsu@...ineon.com>,
        kernel@...gutronix.de, Ahmad Fatoum <a.fatoum@...gutronix.de>,
        SHA-cyfmac-dev-list@...ineon.com,
        brcm80211-dev-list.pdl@...adcom.com, netdev@...r.kernel.org,
        linux-wireless@...r.kernel.org, Jakub Kicinski <kuba@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        linux-kernel@...r.kernel.org
Subject: Re: brcmfmac: pcie: fix oops on failure to resume and reprobe

Ahmad Fatoum <a.fatoum@...gutronix.de> wrote:

> When resuming from suspend, brcmf_pcie_pm_leave_D3 will first attempt a
> hot resume and then fall back to removing the PCI device and then
> reprobing. If this probe fails, the kernel will oops, because brcmf_err,
> which is called to report the failure will dereference the stale bus
> pointer. Open code and use the default bus-less brcmf_err to avoid this.
> 
> Fixes: 8602e62441ab ("brcmfmac: pass bus to the __brcmf_err() in pcie.c")
> Signed-off-by: Ahmad Fatoum <a.fatoum@...gutronix.de>

Patch applied to wireless-drivers-next.git, thanks.

d745ca4f2c4a brcmfmac: pcie: fix oops on failure to resume and reprobe

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20210817063521.22450-1-a.fatoum@pengutronix.de/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches