[Wayland-bugs] [Bug 69490] New: SIGSEGV - Text input protocol attempts to post event to dead or dying resource

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=69490

          Priority: medium
            Bug ID: 69490
          Assignee: wayland-bugs at lists.freedesktop.org
           Summary: SIGSEGV - Text input protocol attempts to post event
                    to dead or dying resource
          Severity: critical
    Classification: Unclassified
                OS: All
          Reporter: ullysses.a.eoff at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: weston
           Product: Wayland

There seems to be a race between a client disconnecting and the text protocol
attempting to post an event to the dying client resource via
wl_text_input_send_language(...).  Various backtraces indicate that the
resource is not always completely destructed before it reaches
wl_resource_post_event(...), but ultimately results in a segmentation fault. 
See attached backtraces for more evidence of this issue.

wayland (master) heads/master-0-g9a5ed78
drm (master) heads/master-0-gb6da447
mesa (master) heads/master-0-ga1b6e69
libva (master) heads/master-0-g73a11b3
intel-driver (master) heads/master-0-gd22d367
weston (master) heads/master-0-g4a4704a

The only existing test case, so far, that reproduces this issue is the
efl/shm/EntryCutTest in wayland-fits.  Nonetheless, this appears to be a core
issue unrelated to efl.

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