Bug 747129

Summary: Divide by zero in nv40_pm.c::read_pll_2
Product: [Fedora] Fedora Reporter: Chuck Ebbert <cebbert>
Component: xorg-x11-drv-nouveauAssignee: Ben Skeggs <bskeggs>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 16CC: airlied, ajax, bskeggs
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Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: kernel-3.1.0-0.rc10.git0.1.fc16 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-10-20 04:02:10 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Chuck Ebbert 2011-10-18 21:19:34 UTC
Description of problem:
Divide by zero at drivers/gpu/drm/nouveau/nv40_pm.c:65:

        if (!(ctrl & 0x00000100)) {
                if (ctrl & 0x40000000)
==>                     clk = clk * N2 / M2;
        }

M2 == 0
ctrl == 0x40000000


Version-Release number of selected component (if applicable):
3.1-rc9-git0

How reproducible:
On every boot, on HP TX1000 notebook (AMD Turion x2 CPU, nVidia C51 chipset, GeForce Go 6150 GPU)

Comment 1 Chuck Ebbert 2011-10-19 05:01:14 UTC
Fix will be in 3.1.0-0.rc10.git0.1

Comment 2 Fedora Update System 2011-10-19 14:48:35 UTC
kernel-3.1.0-0.rc10.git0.1.fc16 has been submitted as an update for Fedora 16.
https://admin.fedoraproject.org/updates/kernel-3.1.0-0.rc10.git0.1.fc16

Comment 3 Fedora Update System 2011-10-20 02:22:51 UTC
Package kernel-3.1.0-0.rc10.git0.1.fc16:
* should fix your issue,
* was pushed to the Fedora 16 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing kernel-3.1.0-0.rc10.git0.1.fc16'
as soon as you are able to, then reboot.
Please go to the following url:
https://admin.fedoraproject.org/updates/FEDORA-2011-14609
then log in and leave karma (feedback).

Comment 4 Fedora Update System 2011-10-20 04:02:10 UTC
kernel-3.1.0-0.rc10.git0.1.fc16 has been pushed to the Fedora 16 stable repository.  If problems still persist, please make note of it in this bug report.