Bug 103656

Summary:	get_cpuid inline asm violates red zone
Product:	PulseAudio	Reporter:	EoD <EoD>
Component:	core	Assignee:	pulseaudio-bugs
Status:	RESOLVED FIXED	QA Contact:	pulseaudio-bugs
Severity:	normal
Priority:	medium	CC:	lennart
Version:	unspecified
Hardware:	Other
OS:	All
URL:	https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82926
Whiteboard:
i915 platform:		i915 features:
Bug Depends on:
Bug Blocks:	99066

Description EoD 2017-11-09 23:13:02 UTC

The original issue with get_cpuid() came while trying to debug bug 99066 and has been forwarded to GCC (see URL above).

Apparently the current implementation of get_cpuid() is violating the red zone (see GCC bugreport) and hence does segfault on x32.

There are several suggestions on the GCC bug report to work around/fix the issue.

Comment 1 Tanu Kaskinen 2017-11-21 13:23:26 UTC

Great! Thanks a lot for filing the GCC bug. Using the __cpuid macro seems like the best solution. I'll make a patch.

Comment 2 Tanu Kaskinen 2017-11-22 15:15:02 UTC

Patch submitted:
https://patchwork.freedesktop.org/patch/189761/

Comment 3 Tanu Kaskinen 2017-12-06 23:13:35 UTC

The patch is now in master.

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