exterr: clear tags from arguments on CHERI targets
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Authored by brooks on Mon, Jul 6, 4:06 PM.

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.Mon, Jul 6, 4:06 PM

Herald added subscribers: olce, imp. · View Herald TranscriptMon, Jul 6, 4:06 PM

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

Herald added a reviewer: cheri. · View Herald TranscriptMon, Jul 6, 4:06 PM

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

brooks added a parent revision: D58056: exterr: allow exterr to fit pointers on CHERI targets.Mon, Jul 6, 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

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sys/kern/sys_generic.c