872368 – dev-util/rocminfo-5.1.3 segfaults with LTO

Bug 872368 - dev-util/rocminfo-5.1.3 segfaults with LTO

Summary: dev-util/rocminfo-5.1.3 segfaults with LTO

Status:	UNCONFIRMED

Alias:	None

Product:	Gentoo Linux
Classification:	Unclassified
Component:	Current packages (show other bugs)
Hardware:	All Linux

Importance:	Normal normal (vote)
Assignee:	Craig Andrews

URL:
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Keywords:

Depends on:
Blocks:	lto
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Reported:	2022-09-22 12:29 UTC by Adrien Dessemond
Modified:	2022-11-05 07:33 UTC (History)
CC List:	1 user (show)

See Also:	https://github.com/RadeonOpenCompute/rocminfo/issues/57
Package list:
Runtime testing required:	---

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Description Adrien Dessemond 2022-09-22 12:29:48 UTC

# rocminfo 
ROCk module is loaded
Segmentation fault

Issue does not show up in an environment without LTO. The root cause lies in dev-libs/rocr-runtime where a singleton that handles various init values referenced by rocminfo is created. With LTO, GCC (11.3.1) detects deadcode and removes it thus having a NULL pointer giving a segfault.

See attached reference to the upstream report.