Hi, On 1/24/21 10:12 AM, Peer, Ilan wrote: >> -----Original Message----- >> From: Johannes Berg <johannes@xxxxxxxxxxxxxxxx> >> Sent: Sunday, January 24, 2021 00:16 >> To: Hans de Goede <hdegoede@xxxxxxxxxx>; netdev@xxxxxxxxxxxxxxx >> Cc: linux-wireless@xxxxxxxxxxxxxxx; Peer, Ilan <ilan.peer@xxxxxxxxx>; >> Coelho, Luciano <luciano.coelho@xxxxxxxxx> >> Subject: Re: pull-request: mac80211 2021-01-18.2 >> >> On Sat, 2021-01-23 at 22:31 +0100, Hans de Goede wrote: >>> >>> So I'm afraid that I have some bad news about this patch, it fixes the >>> RCU warning which I reported: >>> >>> https://lore.kernel.org/linux-wireless/20210104170713.66956-1-hdegoede >>> @redhat.com/ >>> >>> But it introduces a deadlock. See: >>> >>> https://lore.kernel.org/linux-wireless/d839ab62-e4bc-56f0-d861-f172bf1 >>> 9c4b3@xxxxxxxxxx/ >>> >>> for details. Note we really should fix this new deadlock before 5.11 >>> is released. This is worse then the RCU warning which this patch fixes. >> >> Ouch. Thanks for the heads-up. I guess I'll revert both patches for now, >> unless we can quickly figure out a way to get all these paths in order. >> > > Thanks Hans and Johannes for handling this. I'll try to come up with a solution. Great, thank you for looking into this. Let me know if you have a patch which you want me to test on a RTL8723BS adapter. One thing which I forgot to mention earlier, it is not just lockdep complaining this appears to be a real deadlock, the wifi no longer functions, where as it does function with the patch drops. Regards, Hans
