linux-kernel - RE: [syzbot] [wireless?] WARNING in __rate_control_send

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Message-ID: <c06f8308cc84412a93b81418aaa32fa8@realtek.com>
Date: Fri, 26 Jul 2024 03:26:47 +0000
From: Ping-Ke Shih <pkshih@...ltek.com>
To: syzbot <syzbot+8dd98a9e98ee28dc484a@...kaller.appspotmail.com>,
        "clang-built-linux@...glegroups.com" <clang-built-linux@...glegroups.com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "edumazet@...gle.com"
	<edumazet@...gle.com>,
        "johannes.berg@...el.com" <johannes.berg@...el.com>,
        "johannes@...solutions.net" <johannes@...solutions.net>,
        "kuba@...nel.org"
	<kuba@...nel.org>,
        "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>,
        "linux-wireless@...r.kernel.org"
	<linux-wireless@...r.kernel.org>,
        "nathan@...nel.org" <nathan@...nel.org>,
        "ndesaulniers@...gle.com" <ndesaulniers@...gle.com>,
        "netdev@...r.kernel.org"
	<netdev@...r.kernel.org>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        "syzkaller-bugs@...glegroups.com" <syzkaller-bugs@...glegroups.com>
Subject: RE: [syzbot] [wireless?] WARNING in __rate_control_send_low (2)

<syzbot+8dd98a9e98ee28dc484a@...kaller.appspotmail.com> wrote:
> syzbot has bisected this issue to:
> 
> commit 9df66d5b9f45c39b3925d16e8947cc10009b186d
> Author: Ping-Ke Shih <pkshih@...ltek.com>
> Date:   Wed Jun 9 07:59:44 2021 +0000
> 
>     cfg80211: fix default HE tx bitrate mask in 2G band
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=13e233fd980000
> start commit:   51835949dda3 Merge tag 'net-next-6.11' of git://git.kernel..
> git tree:       net-next
> final oops:     https://syzkaller.appspot.com/x/report.txt?x=101233fd980000
> console output: https://syzkaller.appspot.com/x/log.txt?x=17e233fd980000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=d3bdd09ea2371c89
> dashboard link: https://syzkaller.appspot.com/bug?extid=8dd98a9e98ee28dc484a
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14608749980000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=178b9195980000
> 
> Reported-by: syzbot+8dd98a9e98ee28dc484a@...kaller.appspotmail.com
> Fixes: 9df66d5b9f45 ("cfg80211: fix default HE tx bitrate mask in 2G band")
> 
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

I sent a patch [1] to avoid the warning of

   no supported rates for sta (null) (0xffffffff, band 0) in rate_mask 0x0 with flags 0x0

[1] https://lore.kernel.org/linux-wireless/20240726031520.7616-1-pkshih@realtek.com/T/#u