Re: [PATCH 5.12 4/5] cfg80211: fix locking in netlink owner interface destruction

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Greg Kroah-Hartman [30.04.2021 16:20]:

> From: Johannes Berg <johannes.berg@xxxxxxxxx>
> 
> commit ea6b2098dd02789f68770fd3d5a373732207be2f upstream.
> 
> Harald Arnesen reported [1] a deadlock at reboot time, and after
> he captured a stack trace a picture developed of what's going on:
> 
> The distribution he's using is using iwd (not wpa_supplicant) to
> manage wireless. iwd will usually use the "socket owner" option
> when it creates new interfaces, so that they're automatically
> destroyed when it quits (unexpectedly or otherwise). This is also
> done by wpa_supplicant, but it doesn't do it for the normal one,
> only for additional ones, which is different with iwd.

I just want to point out that the distribution (Void Linux) can use
either wpa_supplicant or iwd. I just happened to use iwd on this machine.
-- 
Hilsen Harald



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