Bug 539883

Assuming this is the same crash reported by abrt, this is reproducible by opening virt-viewer VNC console to a guest from virt-manager.

Xorg.log shows:

Backtrace:
0: /usr/bin/Xorg (xorg_backtrace+0x3c) [0x80e587c]
1: /usr/bin/Xorg (0x8047000+0x5fb66) [0x80a6b66]
2: (vdso) (__kernel_rt_sigreturn+0x0) [0xdb040c]
3: /usr/lib/xorg/modules/drivers/nouveau_drv.so (0x697000+0xa583) [0x6a1583]
4: /usr/lib/xorg/modules/drivers/nouveau_drv.so (0x697000+0xab0d) [0x6a1b0d]
5: /usr/lib/xorg/modules/libexa.so (0x753000+0x92b6) [0x75c2b6]
6: /usr/lib/xorg/modules/libexa.so (0x753000+0x9378) [0x75c378]
7: /usr/bin/Xorg (miCopyRegion+0x213) [0x8196a93]
8: /usr/bin/Xorg (miDoCopy+0x44d) [0x8196fbd]
9: /usr/lib/xorg/modules/libexa.so (0x753000+0x789b) [0x75a89b]
10: /usr/bin/Xorg (0x8047000+0xd6ad4) [0x811dad4]
11: /usr/bin/Xorg (0x8047000+0x25a8d) [0x806ca8d]
12: /usr/bin/Xorg (0x8047000+0x271f7) [0x806e1f7]
13: /usr/bin/Xorg (0x8047000+0x1b8c5) [0x80628c5]
14: /lib/libc.so.6 (__libc_start_main+0xe6) [0xb78bb6]
15: /usr/bin/Xorg (0x8047000+0x1b4b1) [0x80624b1]
Segmentation fault at address (nil)

Fatal server error:
Caught signal 11 (Segmentation fault). Server aborting


Please consult the The X.Org Foundation support 
         at http://bodhi.fedoraproject.org/
 for help. 
Please also check the log file at "/var/log/Xorg.0.log" for additional information.

Hardware is:

(--) PCI:*(0:1:0:0) 10de:002d:10de:0001 nVidia Corporation NV5M64 [RIVA TNT2 Model 64/Model 64 Pro] rev 21, Mem @ 0xe1000000/16777216, 0xf2000000/33554432, BIOS @ 0x????????/131072

Driver is Nouveau

[root@localhost log]# rpm -q xorg-x11-drv-nouveau kernel
xorg-x11-drv-nouveau-0.0.15-17.20091105gite1c2efd.fc12.i686
kernel-2.6.31.6-134.fc12.i686

Created attachment 372801 [details]
Xorg.log for repeat of crash

Backtrace:
0: /usr/bin/Xorg (xorg_backtrace+0x3c) [0x80e587c]
1: /usr/bin/Xorg (0x8047000+0x5fb66) [0x80a6b66]
2: (vdso) (__kernel_rt_sigreturn+0x0) [0x42f40c]
3: /usr/lib/xorg/modules/drivers/nouveau_drv.so (0xa55000+0xa583) [0xa5f583]
4: /usr/lib/xorg/modules/drivers/nouveau_drv.so (0xa55000+0xab0d) [0xa5fb0d]
5: /usr/lib/xorg/modules/libexa.so (0x2c2000+0x92b6) [0x2cb2b6]
6: /usr/lib/xorg/modules/libexa.so (0x2c2000+0x9378) [0x2cb378]
7: /usr/bin/Xorg (miCopyRegion+0x213) [0x8196a93]
8: /usr/bin/Xorg (miDoCopy+0x44d) [0x8196fbd]
9: /usr/lib/xorg/modules/libexa.so (0x2c2000+0x789b) [0x2c989b]
10: /usr/bin/Xorg (0x8047000+0xd6ad4) [0x811dad4]
11: /usr/bin/Xorg (0x8047000+0x25a8d) [0x806ca8d]
12: /usr/bin/Xorg (0x8047000+0x271f7) [0x806e1f7]
13: /usr/bin/Xorg (0x8047000+0x1b8c5) [0x80628c5]
14: /lib/libc.so.6 (__libc_start_main+0xe6) [0xb78bb6]
15: /usr/bin/Xorg (0x8047000+0x1b4b1) [0x80624b1]
Segmentation fault at address (nil)

Fatal server error:
Caught signal 11 (Segmentation fault). Server aborting

This does not occur when the guest to which the VNC connection is made is displaying text console - it occurs when the guest is running X (or possibly graphical mode switch during boot but I don't have good reproducer for that)

Steps to reproduce:

1. Boot F12 guest into runlevel 3 (text console rather than X) and connect VNC with virt-manager - X display running virt-manager is fine
2. Switch F12 guest to runlevel 5 (X) - X display running virt-manager crashes with the backtrace

Reproduced with latest updates-testing packages:

[psj@localhost ~]$ rpm -q xorg-x11-drv-nouveau kernel
xorg-x11-drv-nouveau-0.0.15-18.20091105gite1c2efd.fc12.i686
kernel-2.6.31.6-145.fc12.i686

Backtrace from Xorg.log is:

Backtrace:
0: /usr/bin/Xorg (xorg_backtrace+0x3c) [0x80e586c]
1: /usr/bin/Xorg (0x8047000+0x5fb56) [0x80a6b56]
2: (vdso) (__kernel_rt_sigreturn+0x0) [0x47c40c]
3: /usr/lib/xorg/modules/drivers/nouveau_drv.so (0x17d000+0xa583) [0x187583]
4: /usr/lib/xorg/modules/drivers/nouveau_drv.so (0x17d000+0xab0d) [0x187b0d]
5: /usr/lib/xorg/modules/libexa.so (0x1f6000+0x92b6) [0x1ff2b6]
6: /usr/lib/xorg/modules/libexa.so (0x1f6000+0x9378) [0x1ff378]
7: /usr/bin/Xorg (miCopyRegion+0x213) [0x8196993]
8: /usr/bin/Xorg (miDoCopy+0x44d) [0x8196ebd]
9: /usr/lib/xorg/modules/libexa.so (0x1f6000+0x789b) [0x1fd89b]
10: /usr/bin/Xorg (0x8047000+0xd6ac4) [0x811dac4]
11: /usr/bin/Xorg (0x8047000+0x25a7d) [0x806ca7d]
12: /usr/bin/Xorg (0x8047000+0x271e7) [0x806e1e7]
13: /usr/bin/Xorg (0x8047000+0x1b8b5) [0x80628b5]
14: /lib/libc.so.6 (__libc_start_main+0xe6) [0xb78bb6]
15: /usr/bin/Xorg (0x8047000+0x1b4a1) [0x80624a1]
Segmentation fault at address (nil)

Fatal server error:
Caught signal 11 (Segmentation fault). Server aborting

Still happening with:

[psj@localhost ~]$ rpm -q xorg-x11-drv-nouveau kernel
xorg-x11-drv-nouveau-0.0.15-19.20091105gite1c2efd.fc12.i686
kernel-2.6.31.9-174.fc12.i686

Anything I can do or provide to help?

This crash does not occur when kernel mode setting is disabled (i.e. booting kernel with nomodeset). So it appears only to be an issue with KMS.

See bug #560860 for a report of the same behaviour triggering a crash on ATI.

The workaround from that bug - to change scaling options in the VNC viewer - also avoids the crash here.

*** Bug 560860 has been marked as a duplicate of this bug. ***

Still happening under F13 with:

[psj@localhost ~]$ rpm -q xorg-x11-drv-nouveau kernel
xorg-x11-drv-nouveau-0.0.16-7.20100423git13c1043.fc13.i686
kernel-2.6.33.5-124.fc13.i686

I will hopefully provide an up to date abrt backtrace in follow-up.

*** Bug 609727 has been marked as a duplicate of this bug. ***

Up to date backtrace from ABRT provided in bug #609727

Works in F14 - at least I am unable to reproduce the crash now. Assume fixed.