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Date:   Sat, 09 Dec 2017 21:15:33 +0100
From:   Johannes Berg <johannes@...solutions.net>
To:     Kalle Valo <kvalo@...eaurora.org>, linux-wireless@...r.kernel.org,
        Thorsten Leemhuis <regressions@...mhuis.info>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        ath10k@...ts.infradead.org
Subject: Re: Wireless regressions in v4.15-rc1

On Sat, 2017-12-02 at 14:59 +0200, Kalle Valo wrote:
> 
> net: netlink: Update attr validation to require exact length for some types
> https://git.kernel.org/linus/28033ae4e0f5

This was reverted, more or less, to print only a warning:

https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=6e237d099fac1f73a7b6d7287bb9191f29585a4e

> Jouni fixed this already in hostapd but we also need a fix for kernel so
> that old hostapd versions continue to work:
> 
> https://w1.fi/cgit/hostap/commit/?id=a2426829ce426de82d2fa47071ca41ea81c43307
> 
> Jouni also found a similar problem with mesh:
> 
> https://w1.fi/cgit/hostap/commit/?id=963d3149abfcbab5b83f9023bc50321f777360d1

See above for the kernel revert to let old hostapd versions continue to
work (properly only on little endian platforms) when they don't have
these fixes.

> And Johannes already submitted a revert related to wpa_supplicant:
> 
> [net] Revert "net: core: maybe return -EEXIST in __dev_alloc_name" diffmboxseries
> https://patchwork.ozlabs.org/patch/843863/

That was applied.

> And with ath10k I'm now seeing this:
> 
> [  133.175508] WARNING: CPU: 2 PID: 1743 at net/mac80211/agg-tx.c:315 ___ieee80211_stop_tx_ba_session+0x1ab/0x280 [mac80211]

Just sent a fix for this, kinda a merge/patch failure.

> johannes

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