Bug 25610

Summary: segmentation fault with latest git linux kernel
Product: DRI Reporter: Riccardo Magliocchetti <riccardo.magliocchetti>
Component: DRM/IntelAssignee: Carl Worth <cworth>
Status: CLOSED DUPLICATE QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium CC: pcjc2
Version: unspecified   
Hardware: x86 (IA32)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
xorg log
none
attached bt from crash none

Description Riccardo Magliocchetti 2009-12-12 09:38:40 UTC 
Hello,

i got this while watching a video in totem. linux kernel is git 053fe57ac249a9531c396175778160d9e9509399, the same userspace with kernel 2.6.32-rc8 is fine. Kernel is 64 bit, userspace 32 bit.

Backtrace:
0: /usr/bin/X11/X(xorg_backtrace+0x3b) [0x81314cb]
1: /usr/bin/X11/X(xf86SigHandler+0x51) [0x80c1df1]
2: [0xf771a400]
3: /usr/lib/xorg/modules/drivers//intel_drv.so [0xf724ae37]
4: /usr/bin/X11/X(xf86ProbeOutputModes+0x2b3) [0x80eb673]
5: /usr/bin/X11/X [0x80f4c90]
6: /usr/bin/X11/X(RRGetInfo+0x74) [0x815f904]
7: /usr/bin/X11/X(ProcRRGetScreenInfo+0xa5) [0x8163fc5]
8: /usr/bin/X11/X [0x815bd95]
9: /usr/bin/X11/X(Dispatch+0x357) [0x808c8b7]
10: /usr/bin/X11/X(main+0x3aa) [0x8071b8a]
11: /lib/i686/cmov/libc.so.6(__libc_start_main+0xe5) [0xf73cab55]
12: /usr/bin/X11/X [0x8071051]

Fatal server error:
Caught signal 11.  Server aborting


libdrm-intel1                        2.4.15-1
xserver-xorg-video-intel             2:2.9.1-1
xserver-xorg                         1:7.4+4
xserver-xorg-core                    2:1.6.5-1
Comment 1 Riccardo Magliocchetti 2009-12-12 09:39:07 UTC 
Created attachment 32021 [details]
xorg log
Comment 2 Riccardo Magliocchetti 2009-12-23 01:50:26 UTC 
Created attachment 32262 [details]
attached bt from crash
Comment 3 Riccardo Magliocchetti 2009-12-24 05:20:43 UTC 
I have to add that everytime i open totem i have a couple of this in messages: 

[drm] TV-16: set mode NTSC 480i 0
Comment 4 Peter Clifton 2010-01-06 07:22:09 UTC 
Sounds like the same bug I just reported..

I have a diagnosis too:

https://bugs.freedesktop.org/show_bug.cgi?id=25912

The bug is in libdrm / the kernel ioctl interface, but Jesse Barnes suggested I file against the 2D driver, since that is where the crash occurred.

I'll be cheeky and mark this one as a duplicate of mine.. (since there is already a bit of diagnosis completed there)

Do you also get spurious errenous detections of TV-out being connected?

*** This bug has been marked as a duplicate of bug 25912 ***
Comment 5 Riccardo Magliocchetti 2010-01-07 09:27:37 UTC 
(In reply to comment #4)
> Do you also get spurious errenous detections of TV-out being connected?

Yes, i see the same in my logs and the stackstraces look similar enough. I'm waiting for the next libdrm release to confirm it's fixed. Thanks for the debugging!

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