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Bug 1404815

Summary:	SEC_ERROR_NO_TOKEN error when using SSL and multiple threads
Product:	Red Hat Enterprise Linux 7	Reporter:	Jan Dobes <jdobes>
Component:	curl	Assignee:	Kamil Dudka <kdudka>
Status:	CLOSED ERRATA	QA Contact:	Karel Srot <ksrot>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	7.3	CC:	jdobes, kdudka, kengert
Target Milestone:	rc	Keywords:	Patch
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	curl-7.29.0-39.el7	Doc Type:	No Doc Update
Doc Text:	undefined	Story Points:	---
Clone Of:
Clones:	1413619 (view as bug list)		Environment:
Last Closed:	2017-08-01 17:02:31 UTC	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:

Description Jan Dobes 2016-12-14 17:44:58 UTC

Description of problem:
When I'm using pycurl + threading modules with SSL in python, execution will crash with SEC_ERROR_NO_TOKEN error coming from libcurl.

Version-Release number of selected component (if applicable):
python-pycurl-7.19.0-19.el7.x86_64
libcurl-7.29.0-35.el7.x86_64
nss-3.21.3-2.el7_3.x86_64

How reproducible:
almost always

Steps to Reproduce:
1. Try to download multiple files in multiple threads from server requiring SSL client certificates

Actual results:
pycurl perform() calls will crash

Expected results:
works without problems

Additional info:
https://bugzilla.mozilla.org/show_bug.cgi?id=1297397
https://github.com/curl/curl/commit/3a5d5de9ef52ebe8ca2bda2165edc1b34c242e54

Comment 1 Kamil Dudka 2016-12-14 21:34:28 UTC

(In reply to Jan Dobes from comment #0)
> Description of problem:
> When I'm using pycurl + threading modules with SSL in python, execution will
> crash with SEC_ERROR_NO_TOKEN error coming from libcurl.

Yes, this is a known bug of NSS as you have already figured out.

> How reproducible:
> almost always

It was not that easy to reproduce in my environment when I tried it recently.

> Actual results:
> pycurl perform() calls will crash

If it returns SEC_ERROR_NO_TOKEN, it is not really a crash, just a spurious failure.  A python script may crash if the exception is not handled, but that is another story.

> Additional info:
> https://bugzilla.mozilla.org/show_bug.cgi?id=1297397

We should probably create a RHEL-7 bug for this to force NSS maintainers sponsored by Red Hat to at least have a look.  It is a bug of NSS after all.  If you have a business justification, it would also help.

> https://github.com/curl/curl/commit/3a5d5de9ef52ebe8ca2bda2165edc1b34c242e54

I am fine with including the above patch in a RHEL-7 update.  It will fix only libcurl-based applications though.

Comment 3 Kamil Dudka 2017-01-16 12:26:43 UTC

follow-up commit upstream:

https://github.com/curl/curl/commit/25ed9ea5

Comment 4 Kai Engert (:kaie) (inactive account) 2017-01-16 14:28:42 UTC

Kamil, is this issue limited to RHEL 7, not RHEL 6 ?

Comment 5 Kamil Dudka 2017-01-16 14:57:16 UTC

(In reply to Kai Engert (:kaie) from comment #4)
> Kamil, is this issue limited to RHEL 7, not RHEL 6 ?

The bug in NSS source code must be in both of them but I was debugging it on RHEL-7 only.

Comment 6 Kamil Dudka 2017-01-24 12:35:51 UTC

This bug neither blocks, nor depends on bug #1413619.  In other words, each of them can fixed without fixing the other bug first.  I am weakening the relation to See Also.

Comment 16 errata-xmlrpc 2017-08-01 17:02:31 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, 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/RHSA-2017:2016