Bug 84101 - [NV96] null deref in nouveau_i2c_acquire_pad, triggered by xcmddc
Summary: [NV96] null deref in nouveau_i2c_acquire_pad, triggered by xcmddc
Status: RESOLVED FIXED
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/nouveau (show other bugs)
Version: unspecified
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: Nouveau Project
QA Contact: Xorg Project Team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2014-09-19 16:37 UTC by danny_archer
Modified: 2015-08-17 12:27 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:


Attachments
vbios (55.50 KB, application/octet-stream)
2014-09-19 16:37 UTC, danny_archer
no flags Details
kern.log (8.56 KB, text/plain)
2014-09-19 16:41 UTC, danny_archer
no flags Details
kern.log (8.45 KB, text/plain)
2014-09-21 09:04 UTC, danny_archer
no flags Details
Another kernel log (8.84 KB, text/plain)
2014-12-18 18:12 UTC, danny_archer
no flags Details
dmesg (95.82 KB, text/plain)
2015-01-09 06:28 UTC, hong
no flags Details
The log shows the backtrace of the crash (50.39 KB, text/plain)
2015-01-09 06:29 UTC, hong
no flags Details
VBIOS.rom (58.50 KB, application/octet-stream)
2015-01-09 06:36 UTC, hong
no flags Details

Description danny_archer 2014-09-19 16:37:14 UTC
Created attachment 106557 [details]
vbios

OS: Slackware current
X.Org X Server 1.15.2
kernel version 3.16.3 (although I had a similar crash on an earlier version too, probably 3.15)


The log is here http://ur1.ca/i7ro4

My computer crashed while booting. This happened to me before once a month or two ago. Both times I switched off the computer and it booted ok after switching it on again. Except for these to cases I haven't experienced any stability issues.
Comment 1 danny_archer 2014-09-19 16:41:29 UTC
Created attachment 106558 [details]
kern.log
Comment 2 danny_archer 2014-09-21 09:04:58 UTC
Created attachment 106600 [details]
kern.log

It happened again. I was able to log in over ssh and poweroff the machine. The consequent boot went without any issues.
Comment 3 danny_archer 2014-12-18 18:12:02 UTC
Created attachment 110997 [details]
Another kernel log

I had another crash that seems to be caused by the same thing. Kernel version: 3.18.1
Comment 4 hong 2015-01-09 06:27:14 UTC
I can reproduce a similar issue by unplug and replug in the display cable. I'll attach the crashed log and other dmesg information.
Comment 5 hong 2015-01-09 06:28:14 UTC
Created attachment 111988 [details]
dmesg
Comment 6 hong 2015-01-09 06:29:23 UTC
Created attachment 111989 [details]
The log shows the backtrace of the crash
Comment 7 hong 2015-01-09 06:36:56 UTC
Created attachment 111990 [details]
VBIOS.rom
Comment 8 hong 2015-08-15 17:05:44 UTC
For me the problem disappeared in Linux version 4.1. HTH.
Comment 9 Hans de Goede 2015-08-17 12:27:09 UTC
The code path in question has been rewritten and recent kernels no longer have nouveau_i2c_acquire_pad, closing this.


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