Michel Dänzer wrote: > Looks like a duplicate of #398589, merging. > > Would be great if you could attempt to provide the information requested > there.
Here's the backtrace for the following event, 1. start xorg 2. attach debugger 3. start xterm 4. terminate xterm with Ctrl-C Program received signal SIGSEGV, Segmentation fault. 0xb7d9ec1f in memcpy () from /lib/tls/libc.so.6 (gdb) bt #0 0xb7d9ec1f in memcpy () from /lib/tls/libc.so.6 #1 0xb7bc5afd in SavageLoadCursorImage (pScrn=0x81f9ee0, src=0x82897d8 "\017�) at ../../src/savage_cursor.c:214 #2 0xaf9f66db in xf86SetCursor () from /usr/lib/xorg/modules/libramdac.so #3 0xaf9f5d43 in xf86CursorSetCursor () from /usr/lib/xorg/modules/libramdac.so #4 0x08112be7 in miPointerUpdate () at ../../mi/mipointer.c:360 #5 0x08112cf9 in miPointerDisplayCursor (pScreen=0x824d400, pCursor=0x828ccd0) at ../../mi/mipointer.c:183 #6 0x0812921e in CursorDisplayCursor (pScreen=0x824d400, pCursor=0x828ccd0) at ../../xfixes/cursor.c:136 #7 0x0814e953 in AnimCurDisplayCursor (pScreen=0x824d400, pCursor=0x828ccd0) at ../../render/animcur.c:235 #8 0x0808f80e in DefineInitialRootWindow (win=0x8243238) at ../../dix/events.c:2198 #9 0x0806e665 in main (argc=2, argv=0xbf90fc04, envp=0xf000f065) at ../../dix/main.c:465 (gdb) I can also do that with tinyvm instead of xterm or mplayer and see segfault at exactly the same position. Digging a little deeper, I get at the problem, (gdb) print psav->FBBase $5 = (unsigned char *) 0x0 The segfault is on the line, /* Upload the cursor image to the frame buffer. */ memcpy(psav->FBBase + psav->CursorKByte * 1024, src, 1024); So I guess a brain dead solution would be to do a if( psav->FBBase == 0 ) return; But the question is can this pointer be NULL in the first place? (Don't ask me - I'm not familiar with X codebase!) Let me know if you need more debugging in different stack frames and what you are looking for. - Adam -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
