guid crash when coping clipboard from HVM domain

[marmarek]

Reported by joanna on 5 Dec 2012 22:17 UTC

qubes_guid[segfault at 7f7ef7ee0c0c ip 00007f7ef7571f2d sp 00007fffd8f0fac0 error 4 in libvchan.so[7f7ef7570000+3000](9372]:)

Upsss ;)

[~](user@dom0)$ rpm -qa | grep gui
qubes-gui-dom0-2.1.4-1.fc13.x86_64
xen-hvm-4.1.3gui2.1.4-3.fc13.x86_64

App RPMs are in the R2 current repo.

Migrated-From: https://wiki.qubes-os.org/ticket/684

[marmarek]

Comment by marmarek on 6 Dec 2012 05:43 UTC
Some additional messages from /var/log/qubes/guid.X.log:

secure copy: success
ErrorHandler: BadShmSeg (invalid shared segment parameter)
                 Major opcode: 140 (MIT-SHM)
                 Minor opcode: 3 (X_ShmPutImage)
                 ResourceID:   0x2c00001
                 Failed serial number:  1488
                 Current serial number: 1484
qubes_guid: xcb_io.c:249: process_responses: Assertion `(((long) (dpy->last_request_read) - (long) (dpy->request)) <= 0)' failed.

Interestingly it happened only once to me, after VM restart it works...

Do you know how to extract function name/line number from segfault message? addr2line didn't worked for me...

[marmarek]

Comment by marmarek on 6 Dec 2012 05:43 UTC
Some additional messages from /var/log/qubes/guid.X.log:

secure copy: success
ErrorHandler: BadShmSeg (invalid shared segment parameter)
                 Major opcode: 140 (MIT-SHM)
                 Minor opcode: 3 (X_ShmPutImage)
                 ResourceID:   0x2c00001
                 Failed serial number:  1488
                 Current serial number: 1484
qubes_guid: xcb_io.c:249: process_responses: Assertion `(((long) (dpy->last_request_read) - (long) (dpy->request)) <= 0)' failed.

Interestingly it happened only once to me, after VM restart it works...

Do you know how to extract function name/line number from segfault message? addr2line didn't worked for me...

[marmarek]

Comment by marmarek on 7 Dec 2012 18:01 UTC
Key to reproduce is fast Ctrl-C + Ctrl-Shift-C.

[marmarek]

Comment by marmarek on 7 Dec 2012 18:01 UTC
Key to reproduce is fast Ctrl-C + Ctrl-Shift-C.

[marmarek]

Modified by marmarek on 7 Dec 2012 21:31 UTC

[marmarek]

Modified by marmarek on 7 Dec 2012 21:31 UTC

[marmarek]

Comment by marmarek on 8 Dec 2012 01:31 UTC
Found and fixed.
Short description: failed clipboard copy (fixed in [resulted in erroneously exit handlers called. Detailed description in commit message of fix 2).

[http://git.qubes-os.org/gitweb/?p=marmarek/gui.git;a=commit;h=e0d317af73337ed8a135563052a96bf2b03d33f0
2 http://git.qubes-os.org/gitweb/?p=marmarek/gui.git;a=commit;h=0de83d5ee3cf1e66338cd259c55ce777d4db6425

[marmarek]

Comment by marmarek on 8 Dec 2012 01:31 UTC
Found and fixed.
Short description: failed clipboard copy (fixed in [resulted in erroneously exit handlers called. Detailed description in commit message of fix 2).

[http://git.qubes-os.org/gitweb/?p=marmarek/gui.git;a=commit;h=e0d317af73337ed8a135563052a96bf2b03d33f0
2 http://git.qubes-os.org/gitweb/?p=marmarek/gui.git;a=commit;h=0de83d5ee3cf1e66338cd259c55ce777d4db6425