Bug 821532

Summary:	www-client/firefox-94.0 build stalls with sandbox (Unable to trace children due to YAMA ptrace_scope=1)
Product:	Portage Development	Reporter:	Pascal Jäger <pascal.jaeger>
Component:	Sandbox	Assignee:	Sandbox Maintainers <sandbox>
Status:	RESOLVED FIXED
Severity:	normal	CC:	jasmin+gentoo, mozilla, sam
Priority:	Normal	Keywords:	PMASKED
Version:	unspecified
Hardware:	All
OS:	Linux
See Also:	https://bugs.gentoo.org/show_bug.cgi?id=821403 https://bugs.gentoo.org/show_bug.cgi?id=821526 https://bugs.gentoo.org/show_bug.cgi?id=821523
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	emerge --info '=www-client/firefox-94.0::gentoo emerge -pqv '=www-client/firefox-94.0::gentoo firefox 94.0 build.log

Description Pascal Jäger 2021-11-03 21:56:52 UTC

When I emerge firefox with 
sysctl kernel.yama.ptrace_scope=1 
the build stalls at a random point. In the build log I see several massages saying 
Unable to trace children due to YAMA ptrace_scope=1
I do not know if this has something to do with it, though.

Reproducible: Always

Steps to Reproduce:
1.sysctl kernel.yama.ptrace_scope=1 
2. emerge firefox
Actual Results:  
Firefox build stalls

Expected Results:  
Firefox build is succesful

Comment 1 Pascal Jäger 2021-11-03 21:57:17 UTC

Created attachment 748338 [details]
emerge --info '=www-client/firefox-94.0::gentoo

Comment 2 Pascal Jäger 2021-11-03 21:58:10 UTC

Created attachment 748341 [details]
emerge -pqv '=www-client/firefox-94.0::gentoo

Comment 3 Pascal Jäger 2021-11-03 22:05:56 UTC

Created attachment 748356 [details]
firefox 94.0 build.log

Comment 4 Larry the Git Cow gentoo-dev

2021-11-04 00:32:36 UTC

The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=0410a141e0a13133097d422078f5edaf2894dc1a

commit 0410a141e0a13133097d422078f5edaf2894dc1a
Author:     Sam James <sam@gentoo.org>
AuthorDate: 2021-11-04 00:31:20 +0000
Commit:     Sam James <sam@gentoo.org>
CommitDate: 2021-11-04 00:32:13 +0000

    profiles: mask newer sandbox versions w/ ptrace issues
    
    Masking for now to avoid duplicate reports of known issues;
    hangs when emerging e.g. Firefox and seemingly anything Go
    based are nasty.
    
    One of the bugs (821403) should be OK now but tagging
    anyway for reference.
    
    Bug: https://bugs.gentoo.org/821532
    Bug: https://bugs.gentoo.org/821523
    Bug: https://bugs.gentoo.org/821403
    Signed-off-by: Sam James <sam@gentoo.org>

 profiles/package.mask | 8 ++++++++
 1 file changed, 8 insertions(+)