Re: pkg/53154: ruby 2.5 pegs CPU on DragonFly BSD

[Takahiro Kambe <taca%NetBSD.org@localhost>]

The following reply was made to PR pkg/53154; it has been noted by GNATS.

From: Takahiro Kambe <taca%NetBSD.org@localhost>
To: gnats-bugs%NetBSD.org@localhost, venture37%geeklan.co.uk@localhost
Cc: taca%NetBSD.org@localhost
Subject: Re: pkg/53154: ruby 2.5 pegs CPU on DragonFly BSD
Date: Sun, 16 Sep 2018 23:43:08 +0900 (JST)

 In message <20180404004500.9D7827A155%mollari.NetBSD.org@localhost>
 	on Wed,  4 Apr 2018 00:45:00 +0000 (UTC),
 	venture37%geeklan.co.uk@localhost wrote:
 >>Number:         53154
 >>Category:       pkg
 >>Synopsis:       ruby 2.5 pegs CPU on DragonFly BSD
 >>Confidential:   no
 >>Severity:       serious
 >>Priority:       medium
 >>Responsible:    pkg-manager
 >>State:          open
 >>Class:          sw-bug
 >>Submitter-Id:   net
 >>Arrival-Date:   Wed Apr 04 00:45:00 +0000 2018
 >>Originator:     Sevan Janiyan
 >>Release:        
 >>Organization:
 >>Environment:
 > DragonFly v5.3.0.28.g29df6-DEVELOPMENT #331: Sun Apr  1 15:41:38 PDT 2018
 >>Description:
 > I'm trying to bulkbuild the entire pkgsrc tree on DragonFly BSD. I keep on seeing the ruby25 binary wedging and chewing up CPU.
 > 
 >    PID USERNAME     NICE  SIZE    RES    STATE   C   TIME   CTIME    CPU COMMAND
 > 971573 pbulk          0    34M    28M     CPU3   3  41:19   41:19 98.29% ruby25
 > 
 > 
 >>How-To-Repeat:
 > Try to build ruby25-concurrent-ruby or ruby25-thread_safe or ruby25-native-package-installer for example
 I have reproduced on below:
 
 DragonFly v5.3.0.18526.gd0cad-DEVELOPMENT #0: Mon Sep 17 20:41:06 JST 2018
 
 I have no idea but a few point.
 
 # bmake install
 => Bootstrap dependency digest>=20010302: found digest-20160304
 ===> Skipping vulnerability checks.
 WARNING: No /usr/pkg/pkgdb/pkg-vulnerabilities file found.
 WARNING: To fix run: `/usr/pkg/sbin/pkg_admin -K /usr/pkg/pkgdb fetch-pkg-vulnerabilities'.
 ===> Installing for ruby25-concurrent-ruby-1.0.5
 => Generating pre-install file lists
 => Installing gem into installation root
 Successfully installed concurrent-ruby-1.0.5
 Parsing documentation for concurrent-ruby-1.0.5
 
 So, somethine wrong on generating rdoc files phase.
 
 And with ktrace(1),
 
 # ktrace -di bmake stage-install &
 [1] 191256
 dragonfly# => Bootstrap dependency digest>=20010302: found digest-20160304
 ===> Skipping vulnerability checks.
 WARNING: No /usr/pkg/pkgdb/pkg-vulnerabilities file found.
 WARNING: To fix run: `/usr/pkg/sbin/pkg_admin -K /usr/pkg/pkgdb fetch-pkg-vulnerabilities'.
 ===> Installing for ruby25-concurrent-ruby-1.0.5
 => Generating pre-install file lists
 => Installing gem into installation root
 Successfully installed concurrent-ruby-1.0.5
 Parsing documentation for concurrent-ruby-1.0.5
 kdump | tail
 191428:1    ruby25   RET   sigprocmask 0
 191428:1    ruby25   CALL  umtx_wakeup(0x80044eb00,0)
 191428:1    ruby25   RET   umtx_wakeup 0
 191428:1    ruby25   CALL  mmap(0,0x80000,0x3<PROT_READ|PROT_WRITE>,0x1402<MAP_PRIVATE|MAP_STACK|MAP_ANON>,0xffffffff,0,0)
 191428:1    ruby25   RET   mmap 4198400/0x401000
 191428:1    ruby25   CALL  umtx_wakeup(0x80044eb00,0)
 191428:1    ruby25   RET   umtx_wakeup 0
 191428:1    ruby25   CALL  mprotect(0x800401000,0x1000,0<PROT_NONE>)
 191428:1    ruby25   RET   mprotect 0
 191428:1    ruby25   PSIG  SIGSEGV caught handler=0x8005ac5d0 mask=0x0 code=0x2
 
 ruby25 caught SIGSEGV??
 
 
 -- 
 Takahiro Kambe <taca%NetBSD.org@localhost>