pkg/55371: If PKGSRC_LOCKTYPE={sleep,once}, make depends cannot progress

[ryo%tetera.org@localhost]

>Number:         55371
>Category:       pkg
>Synopsis:       If PKGSRC_LOCKTYPE={sleep,once}, make depends cause dead lock
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Jun 12 14:45:00 +0000 2020
>Originator:     Ryo ONODERA
>Release:        NetBSD 9.99.65
>Organization:
Ryo ONODERA // ryo%tetera.org@localhost
PGP fingerprint = 82A2 DC91 76E0 A10A 8ABB  FD1B F404 27FA C7D1 15F3
>Environment:
	
	
System: NetBSD brownie 9.99.65 NetBSD 9.99.65 (DTRACE7) #3: Fri Jun 12 13:16:17 JST 2020 ryoon@brownie:/usr/world/9.99/amd64/obj/sys/arch/amd64/compile/DTRACE7 amd64
Architecture: x86_64
Machine: amd64
>Description:
If you have PKGSRC_LOCKTYPE=sleep or PKGSRC_LOCKTYPE=once in your /etc/mk.conf,
'make depends' causes dead lock.

In PKGSRC_LOCKTYPE=sleep case:
ryoon@brownie: /usr/pkgsrc/audio/pulseaudio
$ make depends
=> Lock /usr/tmp/pkgsrc/audio/pulseaudio/work/.lockfile acquired for ``depends'' on behalf of process 29838
=> Lock acquire-bootstrap-depends-lock is held by pid 29838
=> Lock acquire-bootstrap-depends-lock is held by pid 29838
(repeated)

In PKGSRC_LOCKTYPE=once case:
ryoon@brownie: /usr/pkgsrc/audio/pulseaudio
$ make depends PKGSRC_LOCKTYPE=once
=> Lock /usr/tmp/pkgsrc/audio/pulseaudio/work/.lockfile acquired for ``depends'' on behalf of process 5848
ERROR: Lock acquire-bootstrap-depends-lock is held by pid 5848
*** Error code 1

Stop.
make: stopped in /usr/pkgsrc/audio/pulseaudio

Anyway if PKGSRC_LOCKTYPE is defined as once or sleep,
'make depends' does not work at all.

>How-To-Repeat:
	
For example,
$ cd /usr/pkgsrc/audio/pulseaudio
$ make PKGSRC_LOCKTYPE=once depends

>Fix:
	
I have no idea.

>Unformatted: