linux-kernel - [BUG] staging: r8188eu: driver stopped working with commit ("staging: r8188eu: add check for kzalloc")

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Message-ID: <ded4b3f5-a9bc-4612-33cc-68bd85cb92fe@gmail.com>
Date:   Wed, 8 Jun 2022 08:50:05 +0200
From:   Michael Straube <straube.linux@...il.com>
To:     gregkh@...uxfoundation.org
Cc:     Larry.Finger@...inger.net, phil@...lpotter.co.uk,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Michael Straube <straube.linux@...il.com>
Subject: [BUG] staging: r8188eu: driver stopped working with commit ("staging:
 r8188eu: add check for kzalloc")

Hi all,

The driver does not work anymore on my system. In dmesg there is:

"r8188eu 1-4:1.0: _rtw_init_xmit_priv failed"

I bisected it to commit f94b47c6bde ("staging: r8188eu: add check for 
kzalloc").

~/kernels/staging> git bisect bad
f94b47c6bde624d6c07f43054087607c52054a95 is the first bad commit

At the moment I have no time to look further into it.

regards,
Michael


dmesg after plugging in the device:

[15075.514705] usb 1-4: new high-speed USB device number 4 using xhci_hcd
[15075.750717] usb 1-4: New USB device found, idVendor=0bda, 
idProduct=8179, bcdDevice= 0.00
[15075.750729] usb 1-4: New USB device strings: Mfr=1, Product=2, 
SerialNumber=3
[15075.750734] usb 1-4: Product: 802.11n NIC
[15075.750738] usb 1-4: Manufacturer: Realtek
[15075.750742] usb 1-4: SerialNumber: 200DB02CEF8F
[15075.767685] Chip Version Info: 
CHIP_8188E_Normal_Chip_TSMC_D_CUT_1T1R_RomVer(0)
[15076.121994] EEPROM ID = 0x8129
[15076.123218] r8188eu 1-4:1.0: _rtw_init_xmit_priv failed
[15076.321389] usb 1-4: reset high-speed USB device number 4 using xhci_hcd