Pasi Kärkkäinen
2009-Aug-18 08:42 UTC
[Fedora-xen] virt-viewer crashing on F11 with Xen 3.4.1
Hello. While continuing to test pv_ops dom0 kernels I also rebuilt xen-3.4.1-1 src.rpm on F11. I''m able to virt-install new centos 5.3 domU, but it seems virt-viewer doesn''t work. It segfaults on startup. vncviewer works though, and I''m able to complete the installation with vncviewer. http://pasik.reaktio.net/fedora/virt-viewer-crash.txt virt-viewer works when used with the default xen-3.3.1 (which is included in F11). Any tips? -- Pasi
Daniel P. Berrange
2009-Aug-18 09:25 UTC
Re: [Fedora-xen] virt-viewer crashing on F11 with Xen 3.4.1
On Tue, Aug 18, 2009 at 11:42:00AM +0300, Pasi K?rkk?inen wrote:> Hello. > > While continuing to test pv_ops dom0 kernels I also rebuilt > xen-3.4.1-1 src.rpm on F11. > > I''m able to virt-install new centos 5.3 domU, but it seems virt-viewer > doesn''t work. It segfaults on startup. vncviewer works though, and I''m able > to complete the installation with vncviewer. > > http://pasik.reaktio.net/fedora/virt-viewer-crash.txt > > virt-viewer works when used with the default xen-3.3.1 (which is included in F11).strace logs aren''t much help with crashes. Try to run it under valgrind and capture the errors, or GDB and get a stack trace Regards, Daniel -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|
Pasi Kärkkäinen
2009-Aug-18 10:18 UTC
Re: [Fedora-xen] virt-viewer crashing on F11 with Xen 3.4.1
On Tue, Aug 18, 2009 at 10:25:28AM +0100, Daniel P. Berrange wrote:> On Tue, Aug 18, 2009 at 11:42:00AM +0300, Pasi K?rkk?inen wrote: > > Hello. > > > > While continuing to test pv_ops dom0 kernels I also rebuilt > > xen-3.4.1-1 src.rpm on F11. > > > > I''m able to virt-install new centos 5.3 domU, but it seems virt-viewer > > doesn''t work. It segfaults on startup. vncviewer works though, and I''m able > > to complete the installation with vncviewer. > > > > http://pasik.reaktio.net/fedora/virt-viewer-crash.txt > > > > virt-viewer works when used with the default xen-3.3.1 (which is included in F11). > > strace logs aren''t much help with crashes. Try to run it under valgrind and > capture the errors, or GDB and get a stack trace >Yeah, I was going to try gdb next.. just didn''t have time yet. Thanks. -- Pasi
Pasi Kärkkäinen
2009-Aug-18 20:18 UTC
Re: [Fedora-xen] virt-viewer crashing on F11 with Xen 3.4.1
On Tue, Aug 18, 2009 at 01:18:23PM +0300, Pasi Kärkkäinen wrote:> On Tue, Aug 18, 2009 at 10:25:28AM +0100, Daniel P. Berrange wrote: > > On Tue, Aug 18, 2009 at 11:42:00AM +0300, Pasi K?rkk?inen wrote: > > > Hello. > > > > > > While continuing to test pv_ops dom0 kernels I also rebuilt > > > xen-3.4.1-1 src.rpm on F11. > > > > > > I''m able to virt-install new centos 5.3 domU, but it seems virt-viewer > > > doesn''t work. It segfaults on startup. vncviewer works though, and I''m able > > > to complete the installation with vncviewer. > > > > > > http://pasik.reaktio.net/fedora/virt-viewer-crash.txt > > > > > > virt-viewer works when used with the default xen-3.3.1 (which is included in F11). > > > > strace logs aren''t much help with crashes. Try to run it under valgrind and > > capture the errors, or GDB and get a stack trace > > > > Yeah, I was going to try gdb next.. just didn''t have time yet. Thanks. >(gdb) run test2vm Starting program: /usr/bin/virt-viewer test2vm [Thread debugging using libthread_db enabled] [New Thread 0xb7c64b70 (LWP 2802)] Program received signal SIGSEGV, Segmentation fault. strcmp () at ../sysdeps/i386/i686/strcmp.S:40 40 ../sysdeps/i386/i686/strcmp.S: No such file or directory. in ../sysdeps/i386/i686/strcmp.S Current language: auto; currently asm (gdb) bt #0 strcmp () at ../sysdeps/i386/i686/strcmp.S:40 #1 0xb7f237d2 in virEnumFromString (types=0xb7fb7074, ntypes=2, type=0x0) at util.c:1481 #2 0xb7f3ce4f in virDomainGraphicsTypeFromString (type=0x0) at domain_conf.c:150 #3 0xb7f77490 in xenDaemonParseSxprGraphicsNew (conn=<value optimized out>, def=<value optimized out>, root=0x8089278) at xend_internal.c:2085 #4 0xb7f79c44 in xenDaemonParseSxpr (conn=<value optimized out>, root=<value optimized out>, xendConfigVersion=4, cpus=0x0) at xend_internal.c:2452 #5 0xb7f7d079 in xenDaemonDomainFetch (conn=0x8079ca0, domid=1, name=0x808b190 "test2vm", cpus=0x0) at xend_internal.c:3372 #6 0xb7f7d180 in xenDaemonDomainDumpXML (domain=0x808b168, flags=0, cpus=0x0) at xend_internal.c:3416 #7 0xb7f74394 in xenUnifiedDomainDumpXML (dom=0x808b168, flags=0) at xen_unified.c:1034 #8 0xb7f357cf in virDomainGetXMLDesc (domain=0x808b168, flags=0) at libvirt.c:2621 #9 0x0804c116 in viewer_extract_vnc_graphics (port=<value optimized out>, dom=<value optimized out>) at main.c:709 #10 viewer_start (port=<value optimized out>, dom=<value optimized out>) at main.c:906 #11 0x0804ca07 in main (argc=2, argv=0xbffff1d4) at main.c:1037 (gdb) So something has changed in Xen 3.4.x and now virEnumFromString() fails? -- Pasi
Daniel P. Berrange
2009-Aug-18 20:21 UTC
Re: [Fedora-xen] virt-viewer crashing on F11 with Xen 3.4.1
On Tue, Aug 18, 2009 at 11:18:24PM +0300, Pasi K?rkk?inen wrote:> On Tue, Aug 18, 2009 at 01:18:23PM +0300, Pasi Kärkkäinen wrote: > > On Tue, Aug 18, 2009 at 10:25:28AM +0100, Daniel P. Berrange wrote: > > > On Tue, Aug 18, 2009 at 11:42:00AM +0300, Pasi K?rkk?inen wrote: > > > > Hello. > > > > > > > > While continuing to test pv_ops dom0 kernels I also rebuilt > > > > xen-3.4.1-1 src.rpm on F11. > > > > > > > > I''m able to virt-install new centos 5.3 domU, but it seems virt-viewer > > > > doesn''t work. It segfaults on startup. vncviewer works though, and I''m able > > > > to complete the installation with vncviewer. > > > > > > > > http://pasik.reaktio.net/fedora/virt-viewer-crash.txt > > > > > > > > virt-viewer works when used with the default xen-3.3.1 (which is included in F11). > > > > > > strace logs aren''t much help with crashes. Try to run it under valgrind and > > > capture the errors, or GDB and get a stack trace > > > > > > > Yeah, I was going to try gdb next.. just didn''t have time yet. Thanks. > > > > (gdb) run test2vm > Starting program: /usr/bin/virt-viewer test2vm > [Thread debugging using libthread_db enabled] > [New Thread 0xb7c64b70 (LWP 2802)] > > Program received signal SIGSEGV, Segmentation fault. > strcmp () at ../sysdeps/i386/i686/strcmp.S:40 > 40 ../sysdeps/i386/i686/strcmp.S: No such file or directory. > in ../sysdeps/i386/i686/strcmp.S > Current language: auto; currently asm > (gdb) bt > #0 strcmp () at ../sysdeps/i386/i686/strcmp.S:40 > #1 0xb7f237d2 in virEnumFromString (types=0xb7fb7074, ntypes=2, type=0x0) at util.c:1481 > #2 0xb7f3ce4f in virDomainGraphicsTypeFromString (type=0x0) at domain_conf.c:150 > #3 0xb7f77490 in xenDaemonParseSxprGraphicsNew (conn=<value optimized out>, def=<value optimized out>, > root=0x8089278) at xend_internal.c:2085 > #4 0xb7f79c44 in xenDaemonParseSxpr (conn=<value optimized out>, root=<value optimized out>, > xendConfigVersion=4, cpus=0x0) at xend_internal.c:2452 > #5 0xb7f7d079 in xenDaemonDomainFetch (conn=0x8079ca0, domid=1, name=0x808b190 "test2vm", cpus=0x0) > at xend_internal.c:3372 > #6 0xb7f7d180 in xenDaemonDomainDumpXML (domain=0x808b168, flags=0, cpus=0x0) at xend_internal.c:3416 > #7 0xb7f74394 in xenUnifiedDomainDumpXML (dom=0x808b168, flags=0) at xen_unified.c:1034 > #8 0xb7f357cf in virDomainGetXMLDesc (domain=0x808b168, flags=0) at libvirt.c:2621 > #9 0x0804c116 in viewer_extract_vnc_graphics (port=<value optimized out>, dom=<value optimized out>) > at main.c:709 > #10 viewer_start (port=<value optimized out>, dom=<value optimized out>) at main.c:906 > #11 0x0804ca07 in main (argc=2, argv=0xbffff1d4) at main.c:1037 > (gdb) > > So something has changed in Xen 3.4.x and now virEnumFromString() fails?Yeah there will be something unexpected in the SEXPR from Xen, which then triggers a latent bug in libvirt code not doing proper sanity checking, resulting in the crash. Can you file a bug against libvirt, and include the output of ''xm list --long $GUESTNAME'' and xenstore-ls as attachments. It ought to be trivial to fix. Regards, Daniel -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|
Pasi Kärkkäinen
2009-Aug-18 20:26 UTC
Re: [Fedora-xen] virt-viewer crashing on F11 with Xen 3.4.1
On Tue, Aug 18, 2009 at 09:21:22PM +0100, Daniel P. Berrange wrote:> On Tue, Aug 18, 2009 at 11:18:24PM +0300, Pasi K?rkk?inen wrote: > > On Tue, Aug 18, 2009 at 01:18:23PM +0300, Pasi Kärkkäinen wrote: > > > On Tue, Aug 18, 2009 at 10:25:28AM +0100, Daniel P. Berrange wrote: > > > > On Tue, Aug 18, 2009 at 11:42:00AM +0300, Pasi K?rkk?inen wrote: > > > > > Hello. > > > > > > > > > > While continuing to test pv_ops dom0 kernels I also rebuilt > > > > > xen-3.4.1-1 src.rpm on F11. > > > > > > > > > > I''m able to virt-install new centos 5.3 domU, but it seems virt-viewer > > > > > doesn''t work. It segfaults on startup. vncviewer works though, and I''m able > > > > > to complete the installation with vncviewer. > > > > > > > > > > http://pasik.reaktio.net/fedora/virt-viewer-crash.txt > > > > > > > > > > virt-viewer works when used with the default xen-3.3.1 (which is included in F11). > > > > > > > > strace logs aren''t much help with crashes. Try to run it under valgrind and > > > > capture the errors, or GDB and get a stack trace > > > > > > > > > > Yeah, I was going to try gdb next.. just didn''t have time yet. Thanks. > > > > > > > (gdb) run test2vm > > Starting program: /usr/bin/virt-viewer test2vm > > [Thread debugging using libthread_db enabled] > > [New Thread 0xb7c64b70 (LWP 2802)] > > > > Program received signal SIGSEGV, Segmentation fault. > > strcmp () at ../sysdeps/i386/i686/strcmp.S:40 > > 40 ../sysdeps/i386/i686/strcmp.S: No such file or directory. > > in ../sysdeps/i386/i686/strcmp.S > > Current language: auto; currently asm > > (gdb) bt > > #0 strcmp () at ../sysdeps/i386/i686/strcmp.S:40 > > #1 0xb7f237d2 in virEnumFromString (types=0xb7fb7074, ntypes=2, type=0x0) at util.c:1481 > > #2 0xb7f3ce4f in virDomainGraphicsTypeFromString (type=0x0) at domain_conf.c:150 > > #3 0xb7f77490 in xenDaemonParseSxprGraphicsNew (conn=<value optimized out>, def=<value optimized out>, > > root=0x8089278) at xend_internal.c:2085 > > #4 0xb7f79c44 in xenDaemonParseSxpr (conn=<value optimized out>, root=<value optimized out>, > > xendConfigVersion=4, cpus=0x0) at xend_internal.c:2452 > > #5 0xb7f7d079 in xenDaemonDomainFetch (conn=0x8079ca0, domid=1, name=0x808b190 "test2vm", cpus=0x0) > > at xend_internal.c:3372 > > #6 0xb7f7d180 in xenDaemonDomainDumpXML (domain=0x808b168, flags=0, cpus=0x0) at xend_internal.c:3416 > > #7 0xb7f74394 in xenUnifiedDomainDumpXML (dom=0x808b168, flags=0) at xen_unified.c:1034 > > #8 0xb7f357cf in virDomainGetXMLDesc (domain=0x808b168, flags=0) at libvirt.c:2621 > > #9 0x0804c116 in viewer_extract_vnc_graphics (port=<value optimized out>, dom=<value optimized out>) > > at main.c:709 > > #10 viewer_start (port=<value optimized out>, dom=<value optimized out>) at main.c:906 > > #11 0x0804ca07 in main (argc=2, argv=0xbffff1d4) at main.c:1037 > > (gdb) > > > > So something has changed in Xen 3.4.x and now virEnumFromString() fails? > > Yeah there will be something unexpected in the SEXPR from Xen, which > then triggers a latent bug in libvirt code not doing proper sanity > checking, resulting in the crash. Can you file a bug against libvirt, > and include the output of ''xm list --long $GUESTNAME'' and xenstore-ls > as attachments. It ought to be trivial to fix. >Yeah I can do that. Wondering if it''s this bug: http://www.mail-archive.com/libvir-list@redhat.com/msg14082.html At least that patch adds check for type == 0, and that''s what I have here.. -- Pasi
Pasi Kärkkäinen
2009-Aug-18 20:48 UTC
Re: [Fedora-xen] virt-viewer crashing on F11 with Xen 3.4.1
On Tue, Aug 18, 2009 at 11:26:13PM +0300, Pasi Kärkkäinen wrote:> On Tue, Aug 18, 2009 at 09:21:22PM +0100, Daniel P. Berrange wrote: > > On Tue, Aug 18, 2009 at 11:18:24PM +0300, Pasi K?rkk?inen wrote: > > > On Tue, Aug 18, 2009 at 01:18:23PM +0300, Pasi Kärkkäinen wrote: > > > > On Tue, Aug 18, 2009 at 10:25:28AM +0100, Daniel P. Berrange wrote: > > > > > On Tue, Aug 18, 2009 at 11:42:00AM +0300, Pasi K?rkk?inen wrote: > > > > > > Hello. > > > > > > > > > > > > While continuing to test pv_ops dom0 kernels I also rebuilt > > > > > > xen-3.4.1-1 src.rpm on F11. > > > > > > > > > > > > I''m able to virt-install new centos 5.3 domU, but it seems virt-viewer > > > > > > doesn''t work. It segfaults on startup. vncviewer works though, and I''m able > > > > > > to complete the installation with vncviewer. > > > > > > > > > > > > http://pasik.reaktio.net/fedora/virt-viewer-crash.txt > > > > > > > > > > > > virt-viewer works when used with the default xen-3.3.1 (which is included in F11). > > > > > > > > > > strace logs aren''t much help with crashes. Try to run it under valgrind and > > > > > capture the errors, or GDB and get a stack trace > > > > > > > > > > > > > Yeah, I was going to try gdb next.. just didn''t have time yet. Thanks. > > > > > > > > > > (gdb) run test2vm > > > Starting program: /usr/bin/virt-viewer test2vm > > > [Thread debugging using libthread_db enabled] > > > [New Thread 0xb7c64b70 (LWP 2802)] > > > > > > Program received signal SIGSEGV, Segmentation fault. > > > strcmp () at ../sysdeps/i386/i686/strcmp.S:40 > > > 40 ../sysdeps/i386/i686/strcmp.S: No such file or directory. > > > in ../sysdeps/i386/i686/strcmp.S > > > Current language: auto; currently asm > > > (gdb) bt > > > #0 strcmp () at ../sysdeps/i386/i686/strcmp.S:40 > > > #1 0xb7f237d2 in virEnumFromString (types=0xb7fb7074, ntypes=2, type=0x0) at util.c:1481 > > > #2 0xb7f3ce4f in virDomainGraphicsTypeFromString (type=0x0) at domain_conf.c:150 > > > #3 0xb7f77490 in xenDaemonParseSxprGraphicsNew (conn=<value optimized out>, def=<value optimized out>, > > > root=0x8089278) at xend_internal.c:2085 > > > #4 0xb7f79c44 in xenDaemonParseSxpr (conn=<value optimized out>, root=<value optimized out>, > > > xendConfigVersion=4, cpus=0x0) at xend_internal.c:2452 > > > #5 0xb7f7d079 in xenDaemonDomainFetch (conn=0x8079ca0, domid=1, name=0x808b190 "test2vm", cpus=0x0) > > > at xend_internal.c:3372 > > > #6 0xb7f7d180 in xenDaemonDomainDumpXML (domain=0x808b168, flags=0, cpus=0x0) at xend_internal.c:3416 > > > #7 0xb7f74394 in xenUnifiedDomainDumpXML (dom=0x808b168, flags=0) at xen_unified.c:1034 > > > #8 0xb7f357cf in virDomainGetXMLDesc (domain=0x808b168, flags=0) at libvirt.c:2621 > > > #9 0x0804c116 in viewer_extract_vnc_graphics (port=<value optimized out>, dom=<value optimized out>) > > > at main.c:709 > > > #10 viewer_start (port=<value optimized out>, dom=<value optimized out>) at main.c:906 > > > #11 0x0804ca07 in main (argc=2, argv=0xbffff1d4) at main.c:1037 > > > (gdb) > > > > > > So something has changed in Xen 3.4.x and now virEnumFromString() fails? > > > > Yeah there will be something unexpected in the SEXPR from Xen, which > > then triggers a latent bug in libvirt code not doing proper sanity > > checking, resulting in the crash. Can you file a bug against libvirt, > > and include the output of ''xm list --long $GUESTNAME'' and xenstore-ls > > as attachments. It ought to be trivial to fix. > > > > Yeah I can do that. > > Wondering if it''s this bug: > http://www.mail-archive.com/libvir-list@redhat.com/msg14082.html > > At least that patch adds check for type == 0, and that''s what I have here.. >Bug submitted: https://bugzilla.redhat.com/show_bug.cgi?id=518091 -- Pasi
Pasi Kärkkäinen
2009-Aug-18 21:36 UTC
Re: [Fedora-xen] virt-viewer crashing on F11 with Xen 3.4.1
On Tue, Aug 18, 2009 at 11:48:33PM +0300, Pasi Kärkkäinen wrote:> On Tue, Aug 18, 2009 at 11:26:13PM +0300, Pasi Kärkkäinen wrote: > > On Tue, Aug 18, 2009 at 09:21:22PM +0100, Daniel P. Berrange wrote: > > > On Tue, Aug 18, 2009 at 11:18:24PM +0300, Pasi K?rkk?inen wrote: > > > > On Tue, Aug 18, 2009 at 01:18:23PM +0300, Pasi Kärkkäinen wrote: > > > > > On Tue, Aug 18, 2009 at 10:25:28AM +0100, Daniel P. Berrange wrote: > > > > > > On Tue, Aug 18, 2009 at 11:42:00AM +0300, Pasi K?rkk?inen wrote: > > > > > > > Hello. > > > > > > > > > > > > > > While continuing to test pv_ops dom0 kernels I also rebuilt > > > > > > > xen-3.4.1-1 src.rpm on F11. > > > > > > > > > > > > > > I''m able to virt-install new centos 5.3 domU, but it seems virt-viewer > > > > > > > doesn''t work. It segfaults on startup. vncviewer works though, and I''m able > > > > > > > to complete the installation with vncviewer. > > > > > > > > > > > > > > http://pasik.reaktio.net/fedora/virt-viewer-crash.txt > > > > > > > > > > > > > > virt-viewer works when used with the default xen-3.3.1 (which is included in F11). > > > > > > > > > > > > strace logs aren''t much help with crashes. Try to run it under valgrind and > > > > > > capture the errors, or GDB and get a stack trace > > > > > > > > > > > > > > > > Yeah, I was going to try gdb next.. just didn''t have time yet. Thanks. > > > > > > > > > > > > > (gdb) run test2vm > > > > Starting program: /usr/bin/virt-viewer test2vm > > > > [Thread debugging using libthread_db enabled] > > > > [New Thread 0xb7c64b70 (LWP 2802)] > > > > > > > > Program received signal SIGSEGV, Segmentation fault. > > > > strcmp () at ../sysdeps/i386/i686/strcmp.S:40 > > > > 40 ../sysdeps/i386/i686/strcmp.S: No such file or directory. > > > > in ../sysdeps/i386/i686/strcmp.S > > > > Current language: auto; currently asm > > > > (gdb) bt > > > > #0 strcmp () at ../sysdeps/i386/i686/strcmp.S:40 > > > > #1 0xb7f237d2 in virEnumFromString (types=0xb7fb7074, ntypes=2, type=0x0) at util.c:1481 > > > > #2 0xb7f3ce4f in virDomainGraphicsTypeFromString (type=0x0) at domain_conf.c:150 > > > > #3 0xb7f77490 in xenDaemonParseSxprGraphicsNew (conn=<value optimized out>, def=<value optimized out>, > > > > root=0x8089278) at xend_internal.c:2085 > > > > #4 0xb7f79c44 in xenDaemonParseSxpr (conn=<value optimized out>, root=<value optimized out>, > > > > xendConfigVersion=4, cpus=0x0) at xend_internal.c:2452 > > > > #5 0xb7f7d079 in xenDaemonDomainFetch (conn=0x8079ca0, domid=1, name=0x808b190 "test2vm", cpus=0x0) > > > > at xend_internal.c:3372 > > > > #6 0xb7f7d180 in xenDaemonDomainDumpXML (domain=0x808b168, flags=0, cpus=0x0) at xend_internal.c:3416 > > > > #7 0xb7f74394 in xenUnifiedDomainDumpXML (dom=0x808b168, flags=0) at xen_unified.c:1034 > > > > #8 0xb7f357cf in virDomainGetXMLDesc (domain=0x808b168, flags=0) at libvirt.c:2621 > > > > #9 0x0804c116 in viewer_extract_vnc_graphics (port=<value optimized out>, dom=<value optimized out>) > > > > at main.c:709 > > > > #10 viewer_start (port=<value optimized out>, dom=<value optimized out>) at main.c:906 > > > > #11 0x0804ca07 in main (argc=2, argv=0xbffff1d4) at main.c:1037 > > > > (gdb) > > > > > > > > So something has changed in Xen 3.4.x and now virEnumFromString() fails? > > > > > > Yeah there will be something unexpected in the SEXPR from Xen, which > > > then triggers a latent bug in libvirt code not doing proper sanity > > > checking, resulting in the crash. Can you file a bug against libvirt, > > > and include the output of ''xm list --long $GUESTNAME'' and xenstore-ls > > > as attachments. It ought to be trivial to fix. > > > > > > > Yeah I can do that. > > > > Wondering if it''s this bug: > > http://www.mail-archive.com/libvir-list@redhat.com/msg14082.html > > > > At least that patch adds check for type == 0, and that''s what I have here.. > > > > Bug submitted: https://bugzilla.redhat.com/show_bug.cgi?id=518091 >And already solved; This libvirt patch fixes the problem: http://libvirt.org/git/?p=libvirt.git;a=commit;h=14435163a086c0bcdff04308077fa46a5fa08bb0 Thanks a lot for fast response! -- Pasi