toolchain/54590: running binaries from gdb fails

[martin%NetBSD.org@localhost]

>Number:         54590
>Category:       toolchain
>Synopsis:       running binaries from gdb fails
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    toolchain-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Oct 01 12:40:02 +0000 2019
>Originator:     Martin Husemann
>Release:        NetBSD 9.99.15
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD unpluged.duskware.de 9.99.15 NetBSD 9.99.15 (UNPLUGED) #265: Tue Oct 1 13:38:00 CEST 2019 martin%seven-days-to-the-wolves.aprisoft.de@localhost:/work/src/sys/arch/evbarm/compile/UNPLUGED evbarm
Architecture: earm
Machine: evbarm
>Description:

Trying to start a binary in the debugger fails:

$ gdb named
GNU gdb (GDB) 8.3
Copyright (C) 2019 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "armv7--netbsdelf-eabihf".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
    <http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from named...
Reading symbols from /usr/libdata/debug//usr/sbin/named.debug...
(gdb) run
Starting program: /usr/sbin/named 
ptrace: Invalid argument.
(gdb) 

Fails for other binaries too (e.g. /bin/ls).

>How-To-Repeat:
s/a

>Fix:
n/a