Bug 2218031

Summary:	Double close in libdebuginfod
Product:	Red Hat Enterprise Linux 9	Reporter:	Mark Wielaard <mjw>
Component:	elfutils	Assignee:	Mark Wielaard <mjw>
elfutils sub component:	system-version	QA Contact:	Martin Cermak <mcermak>
Status:	VERIFIED ---	Docs Contact:
Severity:	unspecified
Priority:	unspecified	CC:	mcermak, mjw, wcohen
Version:	9.3	Keywords:	Triaged
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	elfutils-0.189-3.el9	Doc Type:	No Doc Update
Doc Text:		Story Points:	---
Clone Of:
Clones:	2218034 (view as bug list)		Environment:
Last Closed:		Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2218034

Description Mark Wielaard 2023-06-27 22:07:28 UTC

In multithreaded programs there is a small race window where a file descriptor is closed twice. If in that small window in another thread a new file descriptor is created with the same fd handle/number it will get immediately closed causing wierd bugs.

The fix is simple, don't close the file descriptor twice.

See https://sourceware.org/cgit/elfutils/commit/?id=938a52c22ee915ff2cea813edd5da66bc8184885