exterr: clear tags from arguments on CHERI targets
Needs ReviewPublic
Actions

Authored by brooks on Jul 6 2026, 4:06 PM.

Tags

None

Referenced Files

	F171580190: D58057.id.diff
	Fri, Sep 11, 9:31 PM

	F171476521: D58057.id.diff
	Fri, Sep 11, 8:23 AM

	Unknown Object (File)
	Tue, Sep 8, 11:34 AM

	Unknown Object (File)
	Tue, Sep 8, 4:22 AM

	Unknown Object (File)
	Sun, Sep 6, 12:47 PM

	Unknown Object (File)
	Sun, Sep 6, 10:26 AM

	Unknown Object (File)
	Sun, Sep 6, 5:37 AM

	Unknown Object (File)
	Sat, Sep 5, 7:01 PM

View All 47 Files

Subscribers

imp

olce

Details

Reviewers

kib
mckusick

Group Reviewers

cheri

Summary

We don't want to risk a later copyoutptr leaking capabilities the
calling thread should not have so clear them when filling in uexterr.
While doing so, record that pointer args were tagged to support
future pretty-printing.

Effort: CHERI upstreaming
Sponsored by: Innovate UK

Diff Detail

Repository

rG FreeBSD src repository

Lint

Lint Passed

Unit

No Test Coverage

Build Status

Buildable 74550
Build 71433: arc lint + arc unit

Event Timeline

brooks created this revision.Jul 6 2026, 4:06 PM

Herald added subscribers: olce, imp. · View Herald TranscriptJul 6 2026, 4:06 PM

brooks requested review of this revision.Jul 6 2026, 4:06 PM

Herald added a reviewer: cheri. · View Herald TranscriptJul 6 2026, 4:06 PM

Harbormaster completed remote builds in B74550: Diff 181370.Jul 6 2026, 4:06 PM

brooks added a parent revision: D58056: exterr: allow exterr to fit pointers on CHERI targets.Jul 6 2026, 4:06 PM

brooks added a child revision: D58058: exterr: relax format restrictions.

Revision Contents
Changeset List

Path

Size

sys/

kern/

sys_generic.c

20 lines

sys/

exterrvar.h

3 lines

Diff 181370

View Options

sys/kern/sys_generic.c