I am using XFree86-4.2.0-8 on RedHat 7.3. I have an application
that draws to a pixmap as a buffer that is eventually drawn to a
mapped window. I have had the following error on a few occasions:
X Error of failed request: BadLength (poly request too large or internal Xlib length error)
Major opcode of failed request: 72 (X_PutImage)
Serial number of failed request: 1163135
Current serial number in output stream: 1163152
I've also see a similar error that makes reference to X_AllocColor.
On occasion I have seen an error message like this:
Xlib: unexpected async reply (sequence 0x65c8)!
I decided it would be best to write my own error hander and to
see if I could just ignore the "poly request too large or
internal Xlib length error" error. I also decided to would be
best use XSynchronize() so the error to manifest immediately after
the offending Xlib call. I now frequently see a software hang
with a backtrace like this (I've omitted my application in the
backtrace):
#0 0x420e187e in select () from /lib/i686/libc.so.6
#1 0x40355d44 in _XlcPublicMethods () from /usr/X11R6/lib/libX11.so.6
#2 0x402b345a in _XRead () from /usr/X11R6/lib/libX11.so.6
#3 0x402b3f1a in _XReply () from /usr/X11R6/lib/libX11.so.6
#4 0x402af7e8 in XSync () from /usr/X11R6/lib/libX11.so.6
#5 0x402af881 in _XSyncFunction () from /usr/X11R6/lib/libX11.so.6
#6 0x40298a06 in XDrawLine () from /usr/X11R6/lib/libX11.so.6
. . .
#11 0x4025a1c1 in _XtRemoveAllInputs () from /usr/X11R6/lib/libXt.so.6
#12 0x4025a415 in XtAppNextEvent () from /usr/X11R6/lib/libXt.so.6
. . .
#14 0x0804d8db in main (argc=1, argv=0xbffff8c4) at main.c:912
#15 0x42017499 in __libc_start_main () from /lib/i686/libc.so.6
My questions are:
* Has anyone seen anything like any of the above, especially if
it is a documented bug?
* Any thoughts on how to deal with this situation if it isn't a
known/fixed defect?
Regards,
Joel Breazeale
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