| Summary: |
Uninitialized memory read in cairo_pattern_release_surface |
| Product: |
cairo
|
Reporter: |
Daniel Stone <daniel> |
| Component: |
general | Assignee: |
Carl Worth <cworth> |
| Status: |
RESOLVED
FIXED
|
QA Contact: |
cairo-bugs mailing list <cairo-bugs> |
| Severity: |
normal
|
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| Priority: |
high
|
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| Version: |
0.9.3 | |
|
| Hardware: |
x86 (IA32) | |
|
| OS: |
Windows (All) | |
|
| Whiteboard: |
|
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i915 platform:
|
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i915 features:
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|---|
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[W] UMR: Uninitialized memory read in cairo_pattern_release_surface {69 occurrences} Reading 4 bytes from 0x0013b7b4 (4 bytes at 0x0013b7b4 uninitialized) Address 0x0013b7b4 points into a thread's stack Address 0x0013b7b4 is 68 bytes past the start of local variable 'src_attr' in cairo_image_surface_composite Thread ID: 0x2e0 Error location cairo_pattern_release_surface [c:\builds\mozilla\gfx\cairo\cairo\src\cairo-pattern.c:1426] cairo_image_surface_composite [c:\builds\mozilla\gfx\cairo\cairo\src\cairo-image-surface.c:600] fallback_composite [c:\builds\mozilla\gfx\cairo\cairo\src\cairo-surface.c:508] cairo_surface_composite [c:\builds\mozilla\gfx\cairo\cairo\src\cairo-surface.c:550] composite_trap_region [c:\builds\mozilla\gfx\cairo\cairo\src\cairo-gstate.c:1232] cairo_gstate_clip_and_composite_trapezoids [c:\builds\mozilla\gfx\cairo\cairo\src\cairo-gstate.c:1471] cairo_gstate_paint [c:\builds\mozilla\gfx\cairo\cairo\src\cairo-gstate.c:780] cairo_paint [c:\builds\mozilla\gfx\cairo\cairo\src\cairo.c:1221] cairo_paint_with_alpha [c:\builds\mozilla\gfx\cairo\cairo\src\cairo.c:1249] The code is using src_attr->extras which has not been initialized to anything and could result in some problems down the road. I suspect it should just be set to null in _cairo_image_surface_set_attributes().