Bug 684556

Dear All.

Mar 31 Updated: mesa-libGL-7.11-0.3.20110330.0.fc15.i686
Mar 31 Updated: mesa-libGLU-7.11-0.3.20110330.0.fc15.i686
Mar 31 Installed: kernel-PAE-2.6.38.2-9.fc15.i686
Mar 31 Updated: mesa-dri-filesystem-7.11-0.3.20110330.0.fc15.i686
Mar 31 Updated: xorg-x11-server-common-1.10.0-7.fc15.i686
Mar 31 Updated: kernel-headers-2.6.38.2-9.fc15.i686
Mar 31 Updated: mesa-dri-llvmcore-7.11-0.3.20110330.0.fc15.i686
Mar 31 Updated: mesa-dri-drivers-7.11-0.3.20110330.0.fc15.i686
Mar 31 Updated: xorg-x11-server-Xorg-1.10.0-7.fc15.i686

After logout from xfce4 got in Xorg.0.log
Backtrace:
[    95.633] 0: X (xorg_backtrace+0x3c) [0x80e8b5c]
[    95.633] 1: X (0x8048000+0x5f6d6) [0x80a76d6]
[    95.633] 2: (vdso) (__kernel_rt_sigreturn+0x0) [0x22a40c]
[    95.633] 3: /usr/lib/xorg/modules/drivers/intel_drv.so (0x56a000+0x24196) [0x58e196]
[    95.633] 4: /usr/lib/xorg/modules/drivers/intel_drv.so (0x56a000+0x245f5) [0x58e5f5]
[    95.633] 5: /usr/lib/xorg/modules/drivers/intel_drv.so (0x56a000+0x24698) [0x58e698]
[    95.633] 6: X (0x8048000+0xa3cee) [0x80ebcee]
[    95.633] 7: X (ChangeWindowAttributes+0x268) [0x809bc88]
[    95.633] 8: X (0x8048000+0x22ea8) [0x806aea8]
[    95.633] 9: X (0x8048000+0x29287) [0x8071287]
[    95.633] 10: X (0x8048000+0x1c35c) [0x806435c]
[    95.634] 11: /lib/libc.so.6 (__libc_start_main+0xe6) [0x3cbe36]
[    95.634] 12: X (0x8048000+0x1c671) [0x8064671]
[    95.634] Segmentation fault at address 0x10
[    95.634] 
Fatal server error:
[    95.634] Caught signal 11 (Segmentation fault). Server aborting
[    95.634] 
[    95.634] 
Please consult the Fedora Project support 
         at http://wiki.x.org

OK. Today updated to xorg-x11-server-1.10.1-7.fc15
And got segmentation fault again: 

Backtrace:
[    59.765] 0: X (xorg_backtrace+0x3c) [0x80e8c0c]
[    59.765] 1: X (0x8048000+0x5f786) [0x80a7786]
[    59.765] 2: (vdso) (__kernel_rt_sigreturn+0x0) [0xbfa40c]
[    59.765] 3: /usr/lib/xorg/modules/drivers/intel_drv.so (0x5be000+0x24166) [0x5e2166]
[    59.765] 4: /usr/lib/xorg/modules/drivers/intel_drv.so (0x5be000+0x245c5) [0x5e25c5]
[    59.765] 5: /usr/lib/xorg/modules/drivers/intel_drv.so (0x5be000+0x24668) [0x5e2668]
[    59.765] 6: X (0x8048000+0xa3d9e) [0x80ebd9e]
[    59.765] 7: X (ChangeWindowAttributes+0x268) [0x809bd68]
[    59.765] 8: X (0x8048000+0x22ef8) [0x806aef8]
[    59.765] 9: X (0x8048000+0x292d7) [0x80712d7]
[    59.765] 10: X (0x8048000+0x1c38c) [0x806438c]
[    59.766] 11: /lib/libc.so.6 (__libc_start_main+0xe6) [0x88de36]
[    59.766] 12: X (0x8048000+0x1c6a1) [0x80646a1]
[    59.766] Segmentation fault at address 0x10
[    59.766] 
Fatal server error:
[    59.766] Caught signal 11 (Segmentation fault). Server aborting
[    59.766] 
[    59.766] 
Please consult the Fedora Project support 
         at http://wiki.x.org
 for help. 


Thank you.

(In reply to comment #0)

> Backtrace:
> [   375.791] 0: X (xorg_backtrace+0x3c) [0x80e8a2c]
> [   375.791] 1: X (0x8048000+0x5f566) [0x80a7566]
> [   375.791] 2: (vdso) (__kernel_rt_sigreturn+0x0) [0xa1e40c]
> [   375.791] 3: /usr/lib/xorg/modules/drivers/intel_drv.so (0x4b0000+0x23cc6)
> [0x4d3cc6]
> [   375.791] 4: /usr/lib/xorg/modules/drivers/intel_drv.so (0x4b0000+0x24125)
> [0x4d4125]
> [   375.791] 5: /usr/lib/xorg/modules/drivers/intel_drv.so (0x4b0000+0x241c8)
> [0x4d41c8]
> [   375.791] 6: X (0x8048000+0xa3bbe) [0x80ebbbe]
> [   375.791] 7: X (ChangeWindowAttributes+0x26f) [0x809bbdf]

This is somewhere down in the backing store management code.  Investigating.

> In addition I want to say that, you do not like to hear about glxgears, but it
> says:

There is no possible way this is related to the crash you're seeing.  One bug per bug, please.

I get a similiar crash on F15 beta.

server 1.10.1-11.fc15

drivers: radeon, fbdev

The crash occurs on icewm session startup,
when calling function XSetWindowBackgroundPixmap with pixmap = None (for root window)

Will attach valgrind output.

Created attachment 495427 [details]
valgrind of Xorg

My crash looks like this:

Backtrace:
[   157.244] 0: Xorg (xorg_backtrace+0x2f) [0x4a13df]
[   157.245] 1: Xorg (0x400000+0x622c6) [0x4622c6]
[   157.245] 2: /lib64/libpthread.so.0 (0x3ac9400000+0xf3c0) [0x3ac940f3c0]
[   157.245] 3: Xorg (0x400000+0xb88bd) [0x4b88bd]
[   157.245] 4: Xorg (ChangeWindowAttributes+0xd53) [0x4573e3]
[   157.245] 5: Xorg (0x400000+0x29240) [0x429240]
[   157.245] 6: Xorg (0x400000+0x2ec11) [0x42ec11]
[   157.245] 7: Xorg (0x400000+0x22e1a) [0x422e1a]
[   157.245] 8: /lib64/libc.so.6 (__libc_start_main+0xed) [0x3ac902143d]
[   157.245] 9: Xorg (0x400000+0x23101) [0x423101]
[   157.246] Segmentation fault at address 0x10
[   157.246]
Fatal server error:
[   157.246] Caught signal 11 (Segmentation fault). Server aborting
[   157.246]
[   157.246]

Just updated to xorg-x11-server-1.10.1-14.fc15 and caught the same "Segmentation fault" on logout.

Re #4, crash only happens when root pixmap is set and then cleared

Created attachment 499007 [details]
crash fix when setting bg = None on root window

Minimal fix seem to be this.

Looking at it again, the original problem probably isn't the same as mine...

Some news.
I installed F15 XFCE edition to the same laptop but on different hdd and do not have "Segmentation fault" on logout.
But this time I it is gdm and systemd, on my previous system, which is F14 updated to F15, I used slim and upstart.
As long I do not like gnome desktop I will remove gdm and replace it with slim and then, if I again will get this "Segmentation fault" I will open another bug.

So, I think, this one may be closed.

Thank you.

I am running XFCE spin F15 (2.6.38.6-27.fc15.x86_64 #1 SMP Sun May 15 17:23:28 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux), it is easily reproduced in my machine, just need to change the "Wallpaper mode" to "Fill with background color only" and X crashes.

My backtrace looks like this:
Backtrace:
[    50.444] 0: /usr/bin/X (xorg_backtrace+0x2f) [0x4a13df]
[    50.444] 1: /usr/bin/X (0x400000+0x622c6) [0x4622c6]
[    50.444] 2: /lib64/libpthread.so.0 (0x7fd228630000+0xf3c0) [0x7fd22863f3c0]
[    50.444] 3: /usr/lib64/xorg/modules/extensions/libextmod.so (0x7fd226853000+0xefab) [0x7fd226861fab]
[    50.444] 4: /usr/bin/X (ChangeWindowAttributes+0xd53) [0x4573e3]
[    50.444] 5: /usr/bin/X (0x400000+0x29240) [0x429240]
[    50.444] 6: /usr/bin/X (0x400000+0x2ec11) [0x42ec11]
[    50.444] 7: /usr/bin/X (0x400000+0x22e1a) [0x422e1a]
[    50.444] 8: /lib64/libc.so.6 (__libc_start_main+0xed) [0x7fd22736843d]
[    50.444] 9: /usr/bin/X (0x400000+0x23101) [0x423101]
[    50.444] Segmentation fault at address 0x10
[    50.444] 
Fatal server error:
[    50.444] Caught signal 11 (Segmentation fault). Server aborting
[    50.444] 
[    50.444] 
Please consult the Fedora Project support 
	 at http://wiki.x.org
 for help. 
[    50.444] Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[    50.444] 
[    50.447] (II) Power Button: Close
[    50.447] (II) UnloadModule: "evdev"
[    50.447] (II) Unloading evdev
[    50.447] (II) Power Button: Close
[    50.447] (II) UnloadModule: "evdev"
[    50.447] (II) Unloading evdev
[    50.448] (II) B16_b_02 USB-PS/2 Optical Mouse: Close
[    50.448] (II) UnloadModule: "evdev"
[    50.448] (II) Unloading evdev
[    50.448] (II) Microsoft Natural® Ergonomic Keyboard 4000: Close
[    50.448] (II) UnloadModule: "evdev"
[    50.448] (II) Unloading evdev
[    50.449] (II) Microsoft Natural® Ergonomic Keyboard 4000: Close
[    50.449] (II) UnloadModule: "evdev"
[    50.449] (II) Unloading evdev
[    50.449] (II) AIGLX: Suspending AIGLX clients for VT switch
[    50.449] (II) NOUVEAU(0): NVLeaveVT is called.

Sorry, it is LXDE spin

I will check this on my XFCE spin. Thanks

Multiple segmentation faults using GIMP:

[  1339.873] 0: /usr/bin/X (xorg_backtrace+0x2f) [0x4a13df]
[  1339.873] 1: /usr/bin/X (0x400000+0x622c6) [0x4622c6]
[  1339.873] 2: /lib64/libpthread.so.0 (0x7fb40aa70000+0xf3c0) [0x7fb40aa7f3c0]
[  1339.873] 3: /lib64/libc.so.6 (0x7fb409787000+0x7a71a) [0x7fb40980171a]
[  1339.873] 4: /lib64/libc.so.6 (__libc_malloc+0x75) [0x7fb409803925]
[  1339.873] 5: /usr/lib64/xorg/modules/libexa.so (0x7fb407567000+0x8d27) [0x7fb40756fd27]
[  1339.873] 6: /usr/lib64/xorg/modules/libexa.so (0x7fb407567000+0x12ab6) [0x7fb407579ab6]
[  1339.873] 7: /usr/bin/X (0x400000+0xdb241) [0x4db241]
[  1339.873] 8: /usr/bin/X (0x400000+0x2b25f) [0x42b25f]
[  1339.873] 9: /usr/bin/X (0x400000+0x2ec11) [0x42ec11]
[  1339.874] 10: /usr/bin/X (0x400000+0x22e1a) [0x422e1a]
[  1339.874] 11: /lib64/libc.so.6 (__libc_start_main+0xed) [0x7fb4097a843d]
[  1339.874] 12: /usr/bin/X (0x400000+0x23101) [0x423101]
[  1339.874] Segmentation fault at address 0x37ad0d8
[  1339.874] 
Fatal server error:
[  1339.874] Caught signal 11 (Segmentation fault). Server aborting

xorg-x11-server-Xorg-1.10.1-14.fc15.x86_64
xorg-x11-drv-nouveau-0.0.16-24.20110324git8378443.fc15.x86_64

In function exaPrepareAccessReg_mixed:
(from frame 5: /usr/lib64/xorg/modules/libexa.so (0x7fb407567000+0x8d27) [0x7fb40756fd27])
195: 	}
196:     }
197: 
198:     if (!success) {
199: 	ExaMigrationRec pixmaps[1];
200: 
201: 	/* Do we need to allocate our system buffer? */
202: 	if (!pExaPixmap->sys_ptr) {
203: 	    pExaPixmap->sys_ptr = malloc(pExaPixmap->sys_pitch *
204: 					 pPixmap->drawable.height);
205: >>>>>>> 	    if (!pExaPixmap->sys_ptr)
206: 		FatalError("EXA: malloc failed for size %d bytes\n",
207: 			   pExaPixmap->sys_pitch * pPixmap->drawable.height);
208: 	}
209: 
210: 	if (index == EXA_PREPARE_DEST || index == EXA_PREPARE_AUX_DEST) {
211: 	    pixmaps[0].as_dst = TRUE;
212: 	    pixmaps[0].as_src = FALSE;
213: 	} else {
214: 	    pixmaps[0].as_dst = FALSE;
215: 	    pixmaps[0].as_src = TRUE;


Frame 6: /usr/lib64/xorg/modules/libexa.so (0x7fb407567000+0x12ab6) [0x7fb407579ab6]
/usr/src/debug/xorg-server-1.10.1/exa/exa_unaccel.c:281
ExaCheckPolySegment
Frame 7: /usr/bin/X (0x400000+0xdb241) [0x4db241]
/usr/src/debug/xorg-server-1.10.1/miext/damage/damage.c:1145
damagePolySegment
Frame 8: /usr/bin/X (0x400000+0x2b25f) [0x42b25f]
/usr/src/debug/xorg-server-1.10.1/dix/dispatch.c:1768
ProcPolySegment
Frame 9: /usr/bin/X (0x400000+0x2ec11) [0x42ec11]
/usr/src/debug/xorg-server-1.10.1/dix/dispatch.c:431
Dispatch
Frame 10: /usr/bin/X (0x400000+0x22e1a) [0x422e1a]
/usr/src/debug/xorg-server-1.10.1/dix/main.c:289
main

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