Bug 36544

Created attachment 46023 [details]
Normal backtrace output

I use x11vnc for remote desktop. It always crashes X when I use it in other mode than 8bpp. Crash occurs either under KDE or FVWM.

My x11vnc parameters:
x11vnc -display :0 -ncache 16 -no6 -noipv6 -geometry 1280x800 -wireframe -noxinerama -scrollcopyrect always -solid -fs 1.0 -nothreads -auth guess -noxdamage

After the crash x11vnc wrote the following:
caught XIO error:
24/04/2011 18:18:56 deleted 53 tile_row polling images.

Here is the interesting part of the crash backtrace:
#0  0x000000000044db0a in _CallCallbacks (pcbl=0x7eda60, call_data=0x7fff133fe030) at dixutils.c:743
#1  CallCallbacks (pcbl=0x7eda60, call_data=0x7fff133fe030) at dixutils.c:877
#2  0x000000000046c78c in WriteToClient (who=0xfd4270, count=60, __buf=0xf1e1d8) at io.c:833
#3  0x00007fb6fd68f9d2 in RecordFlushReplyBuffer (pContext=0xf1e1b0, data1=0x0, len1=0, data2=<value optimized out>, len2=<value optimized out>) at record.c:251
#4  0x00007fb6fd68fa46 in RecordFlushAllContexts (pcbl=<value optimized out>, nulldata=<value optimized out>, calldata=<value optimized out>) at record.c:867
#5  0x000000000044db0c in _CallCallbacks (pcbl=0x7eda68, call_data=0x0) at dixutils.c:743
#6  CallCallbacks (pcbl=0x7eda68, call_data=0x0) at dixutils.c:877
#7  0x000000000046c6d4 in WriteToClient (who=0xfd4270, count=60, __buf=0xf1e1d8) at io.c:857
#8  0x00007fb6fd68f9d2 in RecordFlushReplyBuffer (pContext=0xf1e1b0, data1=0x0, len1=0, data2=<value optimized out>, len2=<value optimized out>) at record.c:251
#9  0x00007fb6fd68fa46 in RecordFlushAllContexts (pcbl=<value optimized out>, nulldata=<value optimized out>, calldata=<value optimized out>) at record.c:867
#10 0x000000000044db0c in _CallCallbacks (pcbl=0x7eda68, call_data=0x0) at dixutils.c:743

...

#174545 0x000000000044db0c in _CallCallbacks (pcbl=0x7eda68, call_data=0x0) at dixutils.c:743
#174546 CallCallbacks (pcbl=0x7eda68, call_data=0x0) at dixutils.c:877
#174547 0x000000000046c6d4 in WriteToClient (who=0xfd4270, count=60, __buf=0xf1e1d8) at io.c:857
#174548 0x00007fb6fd68f9d2 in RecordFlushReplyBuffer (pContext=0xf1e1b0, data1=0x0, len1=0, data2=<value optimized out>, len2=<value optimized out>) at record.c:251
#174549 0x00007fb6fd68fa46 in RecordFlushAllContexts (pcbl=<value optimized out>, nulldata=<value optimized out>, calldata=<value optimized out>) at record.c:867
#174550 0x000000000044db0c in _CallCallbacks (pcbl=0x7eda68, call_data=0x0) at dixutils.c:743
#174551 CallCallbacks (pcbl=0x7eda68, call_data=0x0) at dixutils.c:877
#174552 0x000000000046c6d4 in WriteToClient (who=0xfd4270, count=60, __buf=0xf1e1d8) at io.c:857
#174553 0x00007fb6fd68f9d2 in RecordFlushReplyBuffer (pContext=0xf1e1b0, data1=0x0, len1=0, data2=<value optimized out>, len2=<value optimized out>) at record.c:251
#174554 0x00007fb6fd68fa46 in RecordFlushAllContexts (pcbl=<value optimized out>, nulldata=<value optimized out>, calldata=<value optimized out>) at record.c:867
#174555 0x000000000044db0c in _CallCallbacks (pcbl=0x7eda68, call_data=0x0) at dixutils.c:743
#174556 CallCallbacks (pcbl=0x7eda68, call_data=0x0) at dixutils.c:877
#174557 0x000000000046c8ec in FlushAllOutput () at io.c:647
#174558 0x000000000042f58b in Dispatch () at dispatch.c:453
#174559 0x0000000000425ace in main (argc=8, argv=<value optimized out>, envp=<value optimized out>) at main.c:291
XOrg reproducibly crashing with x11vnc