Windows GPF

Chris Kayes (kayes@fel.com)
Thu, 2 Feb 1995 15:09:43 -0500


Maybe one of the Windows developers would be interested in this. CUSEEME
caused a GPF when I closed a video window. If I shouldn't be posting
this here or you aren't interested in the info, please let me know.

CU-SeeMe for Windows version 0.34b4, no video card.

****************************************************************************
Dr. Watson 0.80 Failure Report - Thu Feb 2 14:58:02 1995
CUSEEME had a 'Null Selector (Write)' fault at CUSEEME 1:0524
$tag$CUSEEME$Null Selector (Write)$CUSEEME 1:0524$stosd$Thu Feb 2 14:58:02 1995

CPU Registers (regs)
ax=9998 bx=02ec cx=9899 dx=0665 si=00d9 di=22d8
ip=0524 sp=5c08 bp=5c18 O- D- I+ S+ Z- A- P+ C+
cs = 2c37 807bd820:87df Code Ex/R
ss = 2bef 808b6340:6e3f Data R/W
ds = 2bef 808b6340:6e3f Data R/W
es = 0000 0:0000 Null Ptr

CPU 32 bit Registers (32bit)
eax = 00009998 ebx = 000002ec ecx = 98999899 edx = 00000665
esi = 000000d9 edi = 000022d8 ebp = 00005c18 esp = 80015bf8
fs = 0000 0:0000 Null Ptr
gs = 0000 0:0000 Null Ptr
eflag = 00000202

System Info (info)
Windows version 3.10
Retail build
Windows Build 3.11
Username Unknown User
Organization Unknown Organization
System Free Space 10761984
Stack base 13674, top 19344, lowest 20676, size 5670
System resources: USER: 77% free, seg 06d7 GDI: 68% free, seg 0527
LargestFree 11771904, MaxPagesAvail 2874, MaxPagesLockable 941
TotalLinear 3932, TotalUnlockedPages 948, FreePages 105
TotalPages 1304, FreeLinearSpace 2912, SwapFilePages 1876
Page Size 4096
9 tasks executing.
WinFlags -
Math coprocessor
80486
Enhanced mode
Protect mode

Stack Dump (stack)
Stack Frame 0 is CUSEEME 1:0524 ss:bp 2bef:5c18
2c37:0519 66 8b c1 mov eax, ecx
2c37:051c 86 e0 xchg ah, al
2c37:051e 66 c1 c0 10 rol eax, 10
2c37:0522 86 e0 xchg ah, al
(CUSEEME:1:0524)
2c37:0524 66 ab stosd
2c37:0526 2b 7e f8 sub di, [bp+f8]
2c37:0529 fe 46 ff inc byte ptr [bp+ff]
2c37:052c 80 7e ff 08 cmp byte ptr [bp+ff], 08

System Tasks (tasks)
Task NWPOPUP, Handle 1b47, Flags 0001, Info 4592 10-28-93 8:06
FileName C:\WIN31\SYSTEM\NWPOPUP.EXE
Task WPRINT, Handle 282f, Flags 0001, Info 23040 04-08-92 23:10
FileName C:\WINAPPS\UTIL\WPRINT.EXE
Task CLOCK, Handle 1b0f, Flags 0001, Info 16416 10-01-92 3:11
FileName C:\WIN31\CLOCK.EXE
Task DRWATSON, Handle 2767, Flags 0001, Info 26864 10-01-92 3:11
FileName C:\WIN31\DRWATSON.EXE
Task PROGBAR, Handle 27df, Flags 0001, Info 80992 10-21-93 0:08
FileName C:\WINAPPS\UTIL\PROGBAR.EXE
Task WNEKO, Handle 19f7, Flags 0001, Info 29184 04-16-91 16:25
FileName C:\WINAPPS\UTIL\WNEKO.EXE
Task PROGMAN, Handle 0567, Flags 0001, Info 115312 10-01-92 3:11
FileName C:\WIN31\PROGMAN.EXE
Task TCPMAN, Handle 20d7, Flags 0001, Info 93184 02-02-94 23:31
FileName C:\WINAPPS\WINTRUMP\TCPMAN.EXE
Task CUSEEME, Handle 2fb7, Flags 0001, Info 174948 08-05-94 16:36
FileName C:\WINAPPS\CUSEEME\CUSEEME.EXE