[Bug 295928] panic: race condition in kernel in linuxkpi 802.11

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=295928

Bjoern A. Zeeb <bz@FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |bz@FreeBSD.org
           See Also|                            |https://bugs.freebsd.org/bu
                   |                            |gzilla/show_bug.cgi?id=2958
                   |                            |09

--- Comment #1 from Bjoern A. Zeeb <bz@FreeBSD.org> ---
This is not a race condition in LinuxKPI;  this is net80211 creating/using a
new ni (sta) for a next packet without tearing down the previous sta properly
or letting us setup the new one.

iwlwifi seems to be able to deal with this at the current stage but rtw8x and
mt76 go kaboom.

I believe there's at least another two PRs open related to this (or maybe it's
just in my head as I've seen it) and the release notes for 15.1 indicate
problems with certain rtw8x chipsets.

I can think of a possible work around in LinuxKPI 802.11 but after all the
years I got tired of implementing workarounds and the real fix is to get
net80211 right now but that does not happen over night.

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