Bug 52037
| Summary: | modprobe agpgart locks machine (resources aren't being allocated) | ||||||||||
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| Product: | [Retired] Red Hat Linux | Reporter: | Chris Runge <crunge> | ||||||||
| Component: | kernel | Assignee: | Arjan van de Ven <arjanv> | ||||||||
| Status: | CLOSED NOTABUG | QA Contact: | Brock Organ <borgan> | ||||||||
| Severity: | high | Docs Contact: | |||||||||
| Priority: | high | ||||||||||
| Version: | 7.3 | ||||||||||
| Target Milestone: | --- | ||||||||||
| Target Release: | --- | ||||||||||
| Hardware: | i386 | ||||||||||
| OS: | Linux | ||||||||||
| Whiteboard: | |||||||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||||||
| Doc Text: | Story Points: | --- | |||||||||
| Clone Of: | Environment: | ||||||||||
| Last Closed: | 2001-08-27 14:36:41 UTC | Type: | --- | ||||||||
| Regression: | --- | Mount Type: | --- | ||||||||
| Documentation: | --- | CRM: | |||||||||
| Verified Versions: | Category: | --- | |||||||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||||||
| Embargoed: | |||||||||||
| Attachments: |
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Created attachment 28414 [details]
dmesg output
Created attachment 28415 [details]
lspci -vvv output
Created attachment 28416 [details]
lspci -xxx output
Please note... I am using a VisionTek GeForce 3 card at the current time; however, I am not using the proprietary drivers from Nvidia. I also have a G450 from Matrox; it also has the problem. This defect is considered SHOULD-FIX for Fairfax. this is no longer an issue... SuperMicro recently released a new BIOS (1.1C) for the 370DE6 motherboard. A combination of applying that, removing all cards except the Nvidia card, and playing with the BIOS settings some more seemed to fix it. I'm thinking it is the BIOS update that fixed the problem since I have tried the other things before. When I had agpgart loaded I then was able to reinstall my other PCI cards and things worked fine (and continue to). Bios bug -> NOTOURBUG :) but that doesn't exist so I'll close as NOTABUG |
Description of Problem: on roswell 2 (7.1.94), with the kernel 2.4.7-2, issuing the command "modprobe agpgart" locks the machine solid; a reboot is necessary Version-Release number of selected component (if applicable): kernel 2.4.7-2 How Reproducible: everytime; happens when I try the smp kernel, the non-smp kernel, the noapic option, and after fiddling with almost every BIOS option Steps to Reproduce: 1. modprobe agpgart Actual Results: machine locks solid; a hard reset is required Expected Results: the agpgart module should load, or give an error Additional Information: I didn't have this problem in 7.1. The problem is probably caused by the new ServerWorks AGP support that has found itself in newer kernels (post 7.1)--I have a ServerWorks III HE-SL chipset in my SuperMicro 370DE6 motherboard. Before ServerWorks AGP support was available the kernel would spit out an error message when I tried to load the agpgart module. When the support was introduced in the generic kernel source I worked with Jeff Hartmann, the agpgart author, to try to isolate the problem. At that time when the module was loaded a series of error messages would scroll by on the screen; the machine was still essentially hard-locked, however. He ascertained after a while that he thought the problem had to do with resources not being allocated correctly. The output of lspci -vvv shows this: 00:00.0 Host bridge: ServerWorks CNB20HE Host Bridge (rev 23) Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- Region 0: Memory at <ignored> (32-bit, prefetchable) [disabled] [size=128M] Region 1: Memory at f22ff000 (32-bit, non-prefetchable) [disabled] [size=4K] Here the Region 0 of 00:00.0 isn't allocated. dmesg also points this out: PCI: Cannot allocate resource region 0 of device 00:00.0 By playing around with various BIOS settings I can get it so that Region 0 is allocated, but Region 1 then goes unallocated. At Jeff's suggestion I removed all PCI devices from the system--he thought maybe a soundcard or other device was the problem--this still didn't fix it. Booting with the uniproc kernel or with the noapic option doesn't fix the problem either. I think that if the resource allocation problem can be fixed this will fix the agpgart lockup. I will attach all relevant information that Jeff had asked for...