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Subject: Re: wpa_supplicant 2.8 fails in brcmf_cfg80211_set_pmk
From:   Marcel Holtmann <marcel@holtmann.org>
In-Reply-To: <605ea0a8-3303-b810-6223-18ccc7eb7af4@cypress.com>
Date:   Mon, 17 Jun 2019 16:33:48 +0200
Cc:     Stefan Wahren <wahrenst@gmx.net>,
        Stanley Hsu <Stanley.Hsu@cypress.com>,
        Arend van Spriel <arend.vanspriel@broadcom.com>,
        Franky Lin <franky.lin@broadcom.com>,
        Hante Meuleman <hante.meuleman@broadcom.com>,
        Wright Feng <Wright.Feng@cypress.com>,
        "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
        "brcm80211-dev-list.pdl@broadcom.com" 
        <brcm80211-dev-list.pdl@broadcom.com>,
        brcm80211-dev-list <brcm80211-dev-list@cypress.com>
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References: <06f7bda7-eeaf-536b-a583-7c9bc5f681f5@gmx.net>
 <9da02861-9151-9700-2c09-b312d74155fa@gmx.net>
 <605ea0a8-3303-b810-6223-18ccc7eb7af4@cypress.com>
To:     Chi-Hsien Lin <Chi-Hsien.Lin@cypress.com>
Sender: linux-wireless-owner@vger.kernel.org
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Hi Chi-hsien,

>>> i was able to reproduce an (maybe older issue) with 4-way handshake
>>> offloading for 802.1X in the brcmfmac driver. My setup consists of
>>> Raspberry Pi 3 B (current linux-next, arm64/defconfig) on STA side and a
>>> Raspberry Pi 3 A+ (Linux 4.19) on AP side.
>> 
>> Looks like Raspberry Pi isn't the only affected platform [3], [4].
>> 
>> [3] - https://bugzilla.redhat.com/show_bug.cgi?id=1665608
>> [4] - https://bugzilla.kernel.org/show_bug.cgi?id=202521
> 
> Stefan,
> 
> Could you please try the attached patch for your wpa_supplicant? We'll 
> upstream if it works for you.

I hope that someone is also providing a kernel patch to fix the issue. Hacking around a kernel issue in userspace is not enough. Fix the root cause in the kernel.

Regards

Marcel