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Date:   Tue, 30 Mar 2021 18:33:49 +0200
From:   Greg KH <gregkh@linuxfoundation.org>
To:     =?utf-8?B?0JHQvtCz0LTQsNC9INCf0LjQu9C40L/QtdC90LrQvg==?= 
        <bogdan.pylypenko107@gmail.com>
Cc:     linux-wireless@vger.kernel.org, Larry.Finger@lwfinger.net
Subject: Re: rtw88 kernel module error report (UBSAN:
 array-index-out-of-bounds in drivers/net/wireless/realtek/rtw88/phy.c)
Message-ID: <YGNS7WKlBmLrM9/d@kroah.com>
References: <CALw23pC5kFE23g8M97KJY5vK8-eP1dWPj3jze=j4Mi=NjHks0w@mail.gmail.com>
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On Tue, Mar 30, 2021 at 07:26:15AM -0900, Богдан Пилипенко wrote:
> Hi!
> I finded your emails at:
> - https://github.com/lwfinger/rtw88
> - https://wireless.wiki.kernel.org/en/users/drivers/rtl819x
> 
> I have an error in dmesg:
> *dmesg | grep rtw88*
> 
> > [   26.518691] UBSAN: array-index-out-of-bounds in
> > drivers/net/wireless/realtek/rtw88/phy.c:1661:35
> > [   26.518804]  rtw_get_tx_power_params+0xc66/0xd80 [rtw88_core]
> > [   26.518822]  ? check_hw_ready+0x4f/0xa0 [rtw88_core]
> > [   26.518836]  rtw_phy_get_tx_power_index+0x4d/0x1e0 [rtw88_core]
> > [   26.518850]  rtw_phy_set_tx_power_level+0xcc/0x1a0 [rtw88_core]
> > [   26.518864]  rtw_set_channel+0xc1/0x120 [rtw88_core]
> > [   26.518878]  rtw_ops_config+0x87/0xc0 [rtw88_core]
> 
> 
> And many-many cyclic errors like (size 224 & size 512):
> *cat /sys/kernel/debug/kmemleak*

Can you submit a patch for this to resolve the issue as you can
reproduce it easily?

thanks,

greg k-h