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Bug 2105220 - criu: Rebuild for full rseq support
Summary: criu: Rebuild for full rseq support
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 9
Classification: Red Hat
Component: criu
Version: 9.1
Hardware: All
OS: Linux
medium
medium
Target Milestone: rc
: ---
Assignee: Adrian Reber
QA Contact: Chao Ye
URL:
Whiteboard: CockpitTest
: 2107449 (view as bug list)
Depends On: 2033446 2085529
Blocks: 2107449
TreeView+ depends on / blocked
 
Reported: 2022-07-08 09:32 UTC by Florian Weimer
Modified: 2022-11-15 11:26 UTC (History)
4 users (show)

Fixed In Version: criu-3.17-4.el9
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2022-11-15 10:25:23 UTC
Type: Bug
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker RHELPLAN-127290 0 None None None 2022-07-08 09:39:28 UTC
Red Hat Product Errata RHBA-2022:8130 0 None None None 2022-11-15 10:25:30 UTC

Description Florian Weimer 2022-07-08 09:32:17 UTC
criu/cr-restore.c contains this:

#if defined(__GLIBC__) && defined(RSEQ_SIG)
static void prep_libc_rseq_info(struct rst_rseq_param *rseq)
{
	if (!kdat.has_rseq) {
		rseq->rseq_abi_pointer = 0;
		return;
	}

	rseq->rseq_abi_pointer = encode_pointer(__criu_thread_pointer() + __rseq_offset);
	rseq->rseq_abi_size = __rseq_size;
	rseq->signature = RSEQ_SIG;
}
#else
static void prep_libc_rseq_info(struct rst_rseq_param *rseq)
{
	/*
	 * TODO: handle built-in rseq on other libc'ies like musl
	 * We can do that using get_rseq_conf kernel feature.
	 *
	 * For now we just assume that other libc libraries are
	 * not registering rseq by default.
	 */
	rseq->rseq_abi_pointer = 0;
}
#endif

This means that we need to rebuild criu to pick up the new installed glibc headers in glibc-2.34-37.el9 or later, otherwise only the TODO part will be built, and restore can fail due to interference from rseq.

Before rebuilding, please check that glibc-2.34-37.el9 is in the buildroot, or use a side tag.

Comment 1 Tom Sweeney 2022-07-18 20:15:45 UTC
*** Bug 2107449 has been marked as a duplicate of this bug. ***

Comment 2 Chao Ye 2022-08-01 09:45:31 UTC
Hi Adrian,

I saw there is a new build available already, should we reload errata with this bug, and moving this forward?
https://brewweb.engineering.redhat.com/brew/buildinfo?buildID=2087664
https://errata.devel.redhat.com/advisory/96402

Chao

Comment 3 Adrian Reber 2022-08-01 09:52:54 UTC
Hello Chao,

yes, criu-3.17-4.el9 is the build we want. I was not aware that errata had the older build. I just reloaded the correct build in errata. Thanks for spotting this.

Comment 7 Chao Ye 2022-08-04 06:11:22 UTC
Confirm criu errata now contains latest criu-3.17-4.el9	build:
https://errata.devel.redhat.com/advisory/96402

Comment 9 errata-xmlrpc 2022-11-15 10:25:23 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (criu bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2022:8130


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