Re: [PATCH v2] wifi: mt76: add wcid publish check in mt76_sta_add

[Greg KH <gregkh@linuxfoundation.org>]

On Wed, Jul 01, 2026 at 08:16:07AM +0200, Thorsten Leemhuis wrote:
> On 7/1/26 07:39, Jiajia Liu wrote:
> > On Tue, Jun 30, 2026 at 01:29:51PM +0200, Thorsten Leemhuis wrote:
> >> On 5/28/26 05:38, Jiajia Liu wrote:
> >>> Since mt7925_mac_sta_add publishes wcid, add publish check in mt76_sta_add
> >>> to avoid reinitializing the wcid->poll_list.
> >>>
> >>> Found dev->sta_poll_list corruption when using mt7925 and 7.1-rc4.
> >>
> >> Jiajia Liu, Felox:
> 
> BTW: @Felix, sorry for the typo!
> 
> >> given that the problem seems to be in 7.1, should we
> >> ask the stable team to pick this regression fix up, as this change was
> >> mainlined (as 20b126920a259d ("wifi: mt76: add wcid publish check in
> >> mt76_sta_add") [v7.2-rc1]), but lacks both a Fixes and a Stable tag?
> > 
> > Yes. It seems to be related to cbf5e61da660 ("wifi: mt76: initialize
> > more wcid fields mt76_wcid_init") [v6.14-rc1]. But I didn't reproduce
> > when I checked it out and tested. So Fixes was not added.
> 
> In that case:
> 
> @Stable team, you you please pick up 20b126920a259d ("wifi: mt76: add
> wcid publish check in mt76_sta_add") [v7.2-rc1] for 7.1? It lacks a
> fixes tag and the problem might be older, but I saw two reports about
> this with 7.1-rc -- so it seems some recent change made that problem
> more likely to occur, so it might be good to fix it at least in 7.1.y.

Now queued up for 6.18.y and 7.1.y, thanks.

greg k-h