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From: Christian Lamparter <chunkeey@googlemail.com>
To: =?utf-8?B?U3rFkXRzIMOBa29z?= <szotsaki@gmail.com>
Cc: linux-wireless@vger.kernel.org
Subject: Re: Kernel BUG in rtl92s_phy_chk_fwcmd_iodone():<0-0> Set FW Cmd fail
Date: Thu, 09 Jul 2015 15:39:43 +0200
Message-ID: <3490881.Z6v5kN1kTe@debian64> (sfid-20150709_153953_622876_B12D90AF)
In-Reply-To: <4407990.FztixZGyze@linux-suse.hu>
References: <4407990.FztixZGyze@linux-suse.hu>
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On Tuesday, July 07, 2015 11:56:21 PM Szőts Ákos wrote:
> I have an RTL8191SU 802.11n USB WLAN Adapter with rtl8192su driver. 
> Unfortunately, I have to turn it off and on sometimes to make it work. I use 
> NetworkManager with KDE 5 nm-applet in which I simply turn off the wireless 
> capability then on again.
> 
> Once I did this, I got a kernel BUG. Here is the link for the full text: 
> http://paste.opensuse.org/view/simple/25089935

This message lets you know that a firmware command has timed out.
A call trace is included to let you know what the driver was doing
at the time. If this problem bothers you, the information from the
trace should help to debug it and make a patch.
 
> kernel: rtl8192s_common:rtl92s_phy_chk_fwcmd_iodone():<0-0> Set FW Cmd fail!!
> kernel: ------------[ cut here ]------------
> kernel: WARNING: CPU: 3 PID: 1105 at 
> /home/aki/temp/rtl8192su/rtlwifi/rtl8192s/phy_common.c:1192 
> rtl92s_phy_chk_fwcmd_iodone+0x65/0xb0 [rtl8192s_common]()
> kernel: Modules linked in: rtl8192su(O) rtl8192s_common(O) rtl_usb(O) rtlwifi(O)...
> kernel: Call Trace:
> kernel:  [<ffffffff816d178e>] dump_stack+0x4c/0x6e
> kernel:  [<ffffffff8106b4fa>] warn_slowpath_common+0x8a/0xc0
> kernel:  [<ffffffff8106b5ea>] warn_slowpath_null+0x1a/0x20
> kernel:  [<ffffffffa05ef875>] rtl92s_phy_chk_fwcmd_iodone+0x65/0xb0 
> [rtl8192s_common]
> kernel:  [<ffffffffa05f1c31>] _rtl92s_phy_set_fwcmd_io+0xe1/0x670 
> [rtl8192s_common]
> kernel:  [<ffffffffa05f2279>] rtl92s_phy_set_fw_cmd+0xb9/0x7b0 [rtl8192s_common]
> kernel:  [<ffffffffa05f29aa>] rtl92s_phy_scan_operation_backup+0x3a/0x90 
> [rtl8192s_common]
> kernel:  [<ffffffffa061b8d9>] rtl_op_sw_scan_start+0xa9/0x170 [rtlwifi]

Regards,
Christian