Bug 747129 - Divide by zero in nv40_pm.c::read_pll_2
Summary: Divide by zero in nv40_pm.c::read_pll_2
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: xorg-x11-drv-nouveau
Version: 16
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Ben Skeggs
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-10-18 21:19 UTC by Chuck Ebbert
Modified: 2011-10-20 04:02 UTC (History)
3 users (show)

Fixed In Version: kernel-3.1.0-0.rc10.git0.1.fc16
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2011-10-20 04:02:10 UTC
Type: ---


Attachments (Terms of Use)

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.


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