http://bugs.freedesktop.org/show_bug.cgi?id=19948
Summary: segfault in mode selection -- VidModeGetNumOfModes()
Product: xorg
Version: unspecified
Platform: x86 (IA32)
URL: https://bugs.edge.launchpad.net/ubuntu/+source/xorg-
server/+bug/300310
OS/Version: Linux (All)
Status: NEW
Severity: major
Priority: high
Component: Driver/Radeon
AssignedTo: [email protected]
ReportedBy: [email protected]
QAContact: [email protected]
Created an attachment (id=22567)
--> (http://bugs.freedesktop.org/attachment.cgi?id=22567)
Xorg.0.log.old
Forwarding this bug from a Ubuntu reporter:
https://bugs.edge.launchpad.net/ubuntu/+source/xorg-server/+bug/300310
[Problem]
xserver is crashing in video mode selection when using -ati (-fglrx is ok) when
starting an SDL application. Maybe it just needs a check for the NULL pointer?
[Backtrace]
#0 VidModeGetFirstModeline (scrnIndex=<value optimized out>,
mode=0x7fff7e25b778,
dotClock=0x7fff7e25b784) at ../../../../hw/xfree86/common/xf86VidMode.c:229
pScrn = (ScrnInfoPtr) 0x25925b0
#1 0x0000000000485a32 in VidModeGetNumOfModes (scrnIndex=39526608)
at ../../../../hw/xfree86/common/xf86VidMode.c:451
mode = (pointer) 0x0
dotClock = 0
nummodes = 0
#2 0x00007f82738f5031 in ProcXF86VidModeGetAllModeLines (client=0x289ea60)
at ../../../../../hw/xfree86/dixmods/extmod/xf86vmode.c:534
rep = {type = 40 '(', pad1 = 69 'E', sequenceNumber = 126, length = 0,
modecount = 4527588,
pad2 = 0, pad3 = 0, pad4 = 0, pad5 = 42592864, pad6 = 0}
mdinf = {dotclock = 0, hdisplay = 0, hsyncstart = 0, hsyncend = 0,
htotal = 0, hskew = 0,
vdisplay = 0, vsyncstart = 0, vsyncend = 0, vtotal = 0, pad1 = 16751, flags =
0, reserved1 = 0,
reserved2 = 0, reserved3 = 39886816, privsize = 0}
oldmdinf = {dotclock = 8275232, hdisplay = 0, hsyncstart = 0, hsyncend
= 134, htotal = 0,
vdisplay = 0, vsyncstart = 0, vsyncend = 30928, vtotal = 633, flags = 0,
privsize = 5319427}
mode = <value optimized out>
modecount = <value optimized out>
dotClock = <value optimized out>
ver = 2
#3 0x000000000044d6e4 in Dispatch () at ../../dix/dispatch.c:454
result = <value optimized out>
client = (ClientPtr) 0x289ea60
nready = 0
start_tick = 460
#4 0x00000000004336fd in main (argc=8, argv=0x7fff7e25ba48, envp=<value
optimized out>)
at ../../dix/main.c:441
i = 1
error = 0
xauthfile = <value optimized out>
alwaysCheckForInput = {0, 1}
[Original Report]
I'm not sure what should happen when I start an SDL application (like qemu/kvm)
under X, but the X server crashing is definitely the wrong choice.
>From the Xorg.0.log (attached):
Backtrace:
0: /usr/bin/X(xf86SigHandler+0x65) [0x480f35]
1: /lib/libc.so.6 [0x7f30fb7e4060]
2: /usr/bin/X(VidModeGetFirstModeline+0x85) [0x485995]
3: /usr/bin/X(VidModeGetNumOfModes+0x42) [0x485a32]
4: /usr/lib/xorg/modules/extensions//libextmod.so [0x7f30fb0fb031]
5: /usr/bin/X(Dispatch+0x364) [0x44d6e4]
6: /usr/bin/X(main+0x45d) [0x4336fd]
7: /lib/libc.so.6(__libc_start_main+0xe6) [0x7f30fb7cf466]
8: /usr/bin/X [0x432ad9]
Saw signal 11. Server aborting.
As you can see from the log I've got some X issues on this system anyway, so it
might be a radeon driver bug as well. Might also be related to my other bug
298094.
m...@otherland:~$ lsb_release -rd
Description: Ubuntu 8.10
Release: 8.10
m...@otherland:~$ uname -a
Linux Otherland 2.6.27-7-generic #1 SMP Tue Nov 4 19:33:06 UTC 2008 x86_64
GNU/Linux
m...@otherland:~$ apt-cache policy xserver-xorg xserver-xorg-video-ati
xserver-xorg-video-radeon
xserver-xorg:
Installed: 1:7.4~5ubuntu3
Candidate: 1:7.4~5ubuntu3
Version table:
*** 1:7.4~5ubuntu3 0
500 http://de.archive.ubuntu.com intrepid/main Packages
100 /var/lib/dpkg/status
xserver-xorg-video-ati:
Installed: 1:6.9.0+git20081003.f9826a56-0ubuntu2
Candidate: 1:6.9.0+git20081003.f9826a56-0ubuntu2
Version table:
*** 1:6.9.0+git20081003.f9826a56-0ubuntu2 0
500 http://de.archive.ubuntu.com intrepid/main Packages
100 /var/lib/dpkg/status
xserver-xorg-video-radeon:
Installed: 1:6.9.0+git20081003.f9826a56-0ubuntu2
Candidate: 1:6.9.0+git20081003.f9826a56-0ubuntu2
Version table:
*** 1:6.9.0+git20081003.f9826a56-0ubuntu2 0
500 http://de.archive.ubuntu.com intrepid/main Packages
100 /var/lib/dpkg/status
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