Public bug reported:
(I submitted an Apport on this - but I don't know how to tie the two
together, or where the Apport report went.)
When using Eclipse with VNC and VNC server running with a high
resolution -geometry (e.g I used 3840x2000) I have regular X server
crashes with Eclipse when Eclipse is fullscreen (SIGSEGV in Dispatch()).
I tracked down the problem to being an alloca call that was much bigger
than the current stack size in ProcShmGetImage in
Xvnc/programs/Xserver/Xext/shm.c. In my case I was seeing the length
variable requesting about 16MB.
I suppose a fix is to change that particular ALLOCATE_LOCAL to a normal
malloc (Xmalloc??) or to disable alloca use globally.
My workaround was to change the stack size to something much bigger
(ulimit -s 50000)
** Affects: tightvnc (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1910948
Title:
SIGSEGV on large displays
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