port-evbarm/54757: evbarm-earmv7hf no longer boots

[gson%gson.org@localhost (Andreas Gustafsson)]

>Number:         54757
>Category:       port-evbarm
>Synopsis:       evbarm-earmv7hf no longer boots
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    port-evbarm-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Dec 12 15:55:00 +0000 2019
>Originator:     Andreas Gustafsson
>Release:        NetBSD-current
>Organization:

>Environment:
System: NetBSD
Architecture: arm
Machine: evbarm
>Description:

evbarm-earmv7hf images no longer boot in qemu since the recent period
of build breakage during which the following commits were made:

  2019.12.09.21.05.23 ad src/sys/kern/kern_mutex.c 1.81
  2019.12.09.21.08.56 ad src/sys/sys/mutex.h 1.24
  2019.12.10.02.02.47 manu src/sys/arch/i386/stand/boot/devopen.c 1.10
  2019.12.10.02.02.47 manu src/sys/arch/i386/stand/efiboot/devopen.c 1.9
  2019.12.10.02.02.47 manu src/sys/arch/i386/stand/lib/biosdisk.c 1.53
  2019.12.10.02.06.07 manu src/sys/arch/amd64/amd64/locore.S 1.193
  2019.12.10.02.06.07 manu src/sys/arch/amd64/amd64/machdep.c 1.343
  2019.12.10.02.06.07 manu src/sys/arch/amd64/conf/GENERIC 1.549
  2019.12.10.02.06.07 manu src/sys/arch/amd64/conf/files.amd64 1.114
  2019.12.10.02.06.07 manu src/sys/arch/amd64/conf/kern.ldscript 1.28
  2019.12.10.02.06.07 manu src/sys/arch/x86/x86/efi.c 1.21
  2019.12.10.02.06.07 manu src/sys/arch/x86/x86/multiboot2.c 1.3
  2019.12.10.06.25.50 isaki src/usr.sbin/sysinst/README.md_defs 1.3
  2019.12.10.09.18.37 kre src/bin/sh/parser.c 1.169
  2019.12.10.11.12.02 ad src/sys/kern/kern_mutex.c 1.82
  2019.12.10.11.19.25 nonaka src/sys/dev/hyperv/if_hvn.c 1.12
  2019.12.10.11.35.29 ad src/sys/kern/kern_mutex.c 1.83
  2019.12.10.12.08.52 yamaguchi src/distrib/sets/lists/man/mi 1.1664
  2019.12.10.12.08.52 yamaguchi src/distrib/sets/lists/modules/mi 1.129
  2019.12.10.12.08.52 yamaguchi src/doc/CHANGES 1.2619
  2019.12.10.12.08.52 yamaguchi src/share/man/man4/Makefile 1.690
  2019.12.10.12.08.52 yamaguchi src/sys/arch/amd64/conf/ALL 1.131
  2019.12.10.12.08.52 yamaguchi src/sys/arch/amd64/conf/GENERIC 1.550
  2019.12.10.12.08.52 yamaguchi src/sys/arch/i386/conf/ALL 1.475
  2019.12.10.12.08.52 yamaguchi src/sys/arch/i386/conf/GENERIC 1.1217
  2019.12.10.12.08.52 yamaguchi src/sys/dev/pci/files.pci 1.418
  2019.12.10.12.08.52 yamaguchi src/sys/dev/pci/if_ixl.c 1.1
  2019.12.10.12.08.52 yamaguchi src/sys/dev/pci/if_ixlreg.h 1.1
  2019.12.10.12.08.52 yamaguchi src/sys/dev/pci/if_ixlvar.h 1.1
  2019.12.10.12.08.52 yamaguchi src/sys/modules/Makefile 1.231
  2019.12.10.12.08.53 yamaguchi src/sys/modules/if_ixl/Makefile 1.1
  2019.12.10.12.08.53 yamaguchi src/sys/modules/if_ixl/if_ixl.ioconf 1.1
  2019.12.10.12.20.20 nonaka src/sys/dev/hyperv/hyperv_common.c 1.5
  2019.12.10.12.20.20 nonaka src/sys/dev/hyperv/hypervvar.h 1.4
  2019.12.10.12.20.20 nonaka src/sys/dev/hyperv/if_hvn.c 1.13
  2019.12.10.12.20.20 nonaka src/sys/dev/hyperv/vmbus.c 1.8
  2019.12.10.12.20.20 nonaka src/sys/dev/hyperv/vmbusvar.h 1.4
  2019.12.10.13.07.28 yamaguchi src/share/man/man4/ixl.4 1.1
  2019.12.10.13.36.44 kre src/sys/kern/kern_mutex.c 1.84

The kernel prints the messages:

  [   1.0000000] NetBSD/evbarm (fdt) booting ...
  [   1.0000000] [ Kernel symbol table missing! ]

and then appears to hang.  For the full log, see

  http://www.gson.org/netbsd/bugs/build/evbarm-earmv7hf/commits-2019.12.html#2019.12.10.13.36.44

>How-To-Repeat:

>Fix: