[Prism54-devel] [Bug 67] hard hang on readl

[bugzilla-daemon@mcgrof.com]

http://prism54.org/cgi-bin/bugzilla/show_bug.cgi?id=67





------- Additional Comments From vda@port.imtp.ilyichevsk.odessa.ua  2004-03-08 22:32 -------
I have a way to reliably reproduce this.
I have one box acting as AP and other as STA.
First, I have to saturate link (it doesn't matter
in which direction, or in both directions at once).

For example using netcat, on AP:
nc -nu -l -p 19 </dev/zero >/dev/null
on STA:
nc -nu ap_ip_addr 19 </dev/zero >/dev/null
and watch tcpdump or what else do you have.
~1.5 Mb/s each way.

It can go on indefinitely on idle STA, also works
if I do heavy reading (dd if=/dev/hda of=/dev/null).
Heavy write load (dd if=/dev/zero of=file) kills STA instantly
with symptoms described above.

Tested with Linux 2.6.4-rc2-bk3 + prism54 cvs20040307.
Will retest with older kernel tomorrow.

My last hope is maybe it's mainboard related (bug in mobo
chipset etc?) Any suggestions?

# lspci
00:00.0 Host bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133] (rev 02)
00:01.0 PCI bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133 AGP]
00:07.0 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super South] (rev 22)
00:07.1 IDE interface: VIA Technologies, Inc. Bus Master IDE (rev 10)
00:07.4 Host bridge: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] (rev 30)
00:07.5 Multimedia audio controller: VIA Technologies, Inc. AC97 Audio
Controller (rev 20)
00:0a.0 Network controller: Harris Semiconductor: Unknown device 3890 (rev 01)
00:0f.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139 (rev 10)
01:00.0 VGA compatible controller: nVidia Corporation Vanta [NV6] (rev 15)




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