| Summary: |
elographics divide by zero crasher |
| Product: |
xorg
|
Reporter: |
Daniel Drake <ddrake> |
| Component: |
Input/elographics | Assignee: |
Xorg Project Team <xorg-team> |
| Status: |
RESOLVED
FIXED
|
QA Contact: |
Xorg Project Team <xorg-team> |
| Severity: |
normal
|
|
|
| Priority: |
medium
|
|
|
| Version: |
unspecified | |
|
| Hardware: |
All | |
|
| OS: |
All | |
|
| Whiteboard: |
|
|
i915 platform:
|
|
i915 features:
|
|
|---|
| Attachments: |
| Description |
Flags |
|
fix
|
none
|
|
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By accident, we ended up using these values for the elographics input driver: Option "MaxX" "4050" Option "MinX" "4051" Option "MinY" "3973" Option "MaxY" "3973" With these values, X crashes when you touch the screen: Program received signal SIGFPE, Arithmetic exception. 0x00002b6f559946f0 in xf86EloConvert (local=0x80dea0, first=<value optimized out>, num=<value optimized out>, v0=2886, v1=1618, v2=0, v3=0, v4=0, v5=0, x=0x7fff5764525c, y=0x7fff57645258) at xf86Elo.c:736 736 *y = (priv->screen_height - (gdb) bt #0 0x00002b6f559946f0 in xf86EloConvert (local=0x80dea0, first=<value optimized out>, num=<value optimized out>, v0=2886, v1=1618, v2=0, v3=0, v4=0, v5=0, x=0x7fff5764525c, y=0x7fff57645258) at xf86Elo.c:736 #1 0x00002b6f55995a29 in xf86EloReadInput (local=0x80dea0) at xf86Elo.c:846 #2 0x0000000000490c6f in xf86AddEnabledDevice () #3 0x000000000046af2f in xf86InstallSIGIOHandler () #4 0x00002b6f53db35d0 in killpg () from /lib/libc.so.6 #5 0x0000000000000000 in ?? () The line of code in question: *y = (priv->screen_height - (priv->screen_height * (input_y - priv->min_y)) / height); In this case, height is 0.