[Bugme-new] [Bug 4347] New: savavgfb ddc eeprom oops when "sensors" used as non-root

bugme-daemon at osdl.org bugme-daemon at osdl.org
Tue Mar 15 23:31:20 PST 2005


http://bugme.osdl.org/show_bug.cgi?id=4347

           Summary: savavgfb ddc eeprom oops when "sensors" used as non-root
    Kernel Version: 2.6.11.3
            Status: NEW
          Severity: normal
             Owner: khali at linux-fr.org
         Submitter: salahx at yahoo.com


Distribution: Gentoo (Linux ardvarc 2.6.11-gentoo-r2 #4 Wed Mar 9 15:50:59 CST
2005 i686 AMD Athlon(tm) XP 2000+ AuthenticAMD GNU/Linux)

Hardware Environment: Put-together machine 512M 

Output of lspci:
0000:00:00.0 Host bridge: VIA Technologies, Inc. VT8375 [KM266/KL266] Host Bridge
0000:00:01.0 PCI bridge: VIA Technologies, Inc. VT8633 [Apollo Pro266 AGP]
0000:00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1
Controller (rev 80)
0000:00:10.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1
Controller (rev 80)
0000:00:10.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1
Controller (rev 80)
0000:00:10.3 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 82)
0000:00:11.0 ISA bridge: VIA Technologies, Inc. VT8235 ISA Bridge
0000:00:11.1 IDE interface: VIA Technologies, Inc.
VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
0000:00:11.5 Multimedia audio controller: VIA Technologies, Inc.
VT8233/A/8235/8237 AC97 Audio Controller (rev 50)
0000:00:13.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL-8139/8139C/8139C+ (rev 10)
0000:01:00.0 VGA compatible controller: S3 Inc. VT8375 [ProSavage8 KM266/KL266]


Software Environment: For this one, a stripped down 2.6.11.3 kernel (but its
occured since at least when savagefb was introduced)

Problem Description:
when "savagefb-i2c" is loaded, framebuffer console enabled and eeprom module
loaded or compiled in, if a non-root user runs the "sensors" command, the kernel
panics or reboots instantly

Steps to reproduce:

1) Compile kernel with "S3 Savage support", "Enable ddc2 support" and
"Framebuffer Console Support" compiled in.
2) Either compile in or load eeprom and i2c algorithm modules
3) Boot kernel with Command line: video=savagefb:1024x768-16 at 60
4) Run "sensors" command with eeprom in kernel (Either built-in or modprobed")
as a non-root user

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