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Re: [RFC PATCH v4 6.1] wifi: cfg80211: fix cqm_config access race

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To: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>, linux-wireless@xxxxxxxxxxxxxxx
Subject: Re: [RFC PATCH v4 6.1] wifi: cfg80211: fix cqm_config access race
From: Max Schulze <max.schulze@xxxxxxxxx>
Date: Mon, 11 Sep 2023 15:16:20 +0200
Cc: Johannes Berg <johannes.berg@xxxxxxxxx>
In-reply-to: <20230816153803.b53dd297eacc.I1a1bb102329fc88e4712eaf394cba3025ada0dc7@changeid>
References: <ac96309a-8d8d-4435-36e6-6d152eb31876@online.de> <20230816153803.b53dd297eacc.I1a1bb102329fc88e4712eaf394cba3025ada0dc7@changeid>
Ui-outboundreport: notjunk:1;M01:P0:aZgDVeFWKtY=;97rS+pKGOCqRf7UfOH8bOlxj1D4 l4xUPSiV8voD2o9NdGlv6pOO7uP3FYlVrIcJN0vlZkhtn4/akLyLEPaK9O+wu9nz4OWWWhkOA PSi0cj93udyzpVIsBjWlztKEWoFIHWUN1AR2fpwFabQOHXi7GrYscqFVAPKqmfSu64+ARiP+6 T+7LRyJZVEC4me/80NehdzYq6a+HCOaUis/C/lWREKLuQZdqzZD/TcfIMcSdsYPNtPzSNiSUe hVasvgjDMvlWx9pYrKFtib399NsD8z33p0unAuKMufITcA07LzAh13GrW7ILNOOQu74BEuF58 09EJxSLylpl12SinDwm7eKIsvhs2NWiOIg/avftOiDuGFUcBj6xnFPjkEyc1wf/D/Koe7mYnk 9zyJuG5xGqug5JttEJq/V1RITVfyIKY+ReNrW5FebXL8s7l+k9NqaVCeC5Rp19wzxfiFM0nBE Z4TUN03OmnG3WzoZQzXLdS4wCrt+8cBSlt96NUyaZ32FLMOhebaY6YTIi7EDn9dvV07lH7mZG Tl6lLrMiEK9mPZPTFo2AhRdbXoVkoNfnxgcvfeI5UJf2Kv77PTwzJq0KrpCRML19lmaXoVwe/ zuKJCykdiFPlAOA7ieFeMIY2YbzCgEmRMZgmTy9Itw6ghTP4HUMPuYmx+azsVGoN5BYsXIpR7 9LbZvEyIQ4v4j/VMVya/G8MBOUOuJW4+2RQhyS06KonAP/7efLDvma0ZFM0ifaLpuZVQibt44 5l2ELWrcbECPqtfuhxpdh/fGLyUPy1sqJYVtIqd/LFgnURLmVYVRDpJz+7Pd8zyOMaKXul5jM 7KSKVlQzqZNJyil14u9XkHc+YBkU3c/x9+LJ1GqSyRL/hbQdUjpfOWbW7Tr1MPWjshgMgbYkJ LvaE7U/rg1zSQ4w==
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.14.0

This has been running for two weeks on multiple systems.
It fixes the bug and does not show any other effects.

So, offering a 


Tested-by: Max Schulze <max.schulze@xxxxxxxxx>


Thanks!

References:
- BCM43455: brcmf_notify_rssi / cfg80211_cqm_rssi_notify : Unable to handle kernel NULL pointer dereference
  - From: Max Schulze
- [RFC PATCH v4 6.1] wifi: cfg80211: fix cqm_config access race
  - From: Johannes Berg

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