Program received signal SIGFPE, Arithmetic exception. 0x00000000005ff6af in rfb::Region::get_rects (this=0xab8218, rects=<optimized out>, left2right=<optimized out>, topdown=<optimized out>, maxArea=0) at /usr/src/debug/thinlinc-vnc-server/tigervnc/common/rfb/Region.cxx:210 210 int h = maxArea / (xrgn->rects[i].x2 - xrgn->rects[i].x1); (gdb) bt #0 0x00000000005ff6af in rfb::Region::get_rects (this=0xab8218, rects=<optimized out>, left2right=<optimized out>, topdown=<optimized out>, maxArea=0) at /usr/src/debug/thinlinc-vnc-server/tigervnc/common/rfb/Region.cxx:210 #1 0x0000000000603bd6 in rfb::ComparingUpdateTracker::compare (this=0xab8210) at /usr/src/debug/thinlinc-vnc-server/tigervnc/common/rfb/ComparingUpdateTracker.cxx:69 #2 0x0000000000601661 in rfb::VNCServerST::checkUpdate (this=0xab7ea0) at /usr/src/debug/thinlinc-vnc-server/tigervnc/common/rfb/VNCServerST.cxx:617 #3 0x000000000060f4a0 in rfb::VNCSConnectionST::writeFramebufferUpdate (this=0xed8b20) at /usr/src/debug/thinlinc-vnc-server/tigervnc/common/rfb/VNCSConnectionST.cxx:973 #4 0x00000000006101c9 in rfb::VNCSConnectionST::writeFramebufferUpdateOrClose (this=0xed8b20) at /usr/src/debug/thinlinc-vnc-server/tigervnc/common/rfb/VNCSConnectionST.cxx:248 #5 0x00000000006008af in tryUpdate (this=0xab7ea0) at /usr/src/debug/thinlinc-vnc-server/tigervnc/common/rfb/VNCServerST.cxx:565 #6 rfb::VNCServerST::tryUpdate (this=0xab7ea0) at /usr/src/debug/thinlinc-vnc-server/tigervnc/common/rfb/VNCServerST.cxx:553 #7 0x0000000000600915 in rfb::VNCServerST::handleTimeout (this=<optimized out>, t=<optimized out>) at /usr/src/debug/thinlinc-vnc-server/tigervnc/common/rfb/VNCServerST.cxx:492 #8 0x000000000060d8b6 in rfb::Timer::checkTimeouts () at /usr/src/debug/thinlinc-vnc-server/tigervnc/common/rfb/Timer.cxx:104 #9 0x000000000060017e in rfb::VNCServerST::checkTimeouts (this=0xab7ea0) at /usr/src/debug/thinlinc-vnc-server/tigervnc/common/rfb/VNCServerST.cxx:184 #10 0x00000000005f09e1 in XserverDesktop::readWakeupHandler (this=0xab7820, fds=0xa9f720 <LastSelectMask>, nfds=<optimized out>) at XserverDesktop.cc:517 #11 0x00000000005e69fa in vncCallReadWakeupHandlers (fds=0xa9f720 <LastSelectMask>, nfds=1) at vncExtInit.cc:228 #12 0x00000000005ee25c in vncWakeupHandler (data=<optimized out>, nfds=<optimized out>, readmask=<optimized out>) at vncBlockHandler.c:67 #13 0x000000000057b09b in WakeupHandler (result=1, pReadmask=0xa9f720 <LastSelectMask>) at dixutils.c:423 #14 0x00000000005d1942 in WaitForSomething (pClientsReady=0xec5e40) at WaitFor.c:240 #15 0x0000000000576622 in Dispatch () at dispatch.c:361 #16 0x000000000045adea in main (argc=<optimized out>, argv=0x7ffd8b893398, envp=<optimized out>) at main.c:295
This is not reproduciable on a RHEL7 with KDE 4.10.8
Issue is reproducable on SLED 11 SP3 with KDE 4.3.5. To reproduce the crash just start a Konsole and maximize the window.
We've got reports of this happening with KDE on CentOS 6 as well.
*** Bug 5628 has been marked as a duplicate of this bug. ***
Upstream bug report: https://github.com/TigerVNC/tigervnc/issues/185
Verified that I could reproduce the Xvnc crash using build 4854 and that upgrading to build 4889 resolves this issue. Works as expected.
