kern/55851: gdb and kernel backtraces disagree about symbol name syntax

[martin%NetBSD.org@localhost]

>Number:         55851
>Category:       kern
>Synopsis:       gdb and kernel backtraces disagree about symbol name syntax
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Dec 08 14:30:00 +0000 2020
>Originator:     Martin Husemann
>Release:        NetBSD 9.99.77
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD martins.aprisoft.de 9.99.77 NetBSD 9.99.77 (GENERIC) #38: Mon Dec 7 09:49:52 CET 2020 martin%martins.aprisoft.de@localhost:/usr/src/sys/arch/amd64/compile/GENERIC amd64
Architecture: x86_64
Machine: amd64
>Description:

Kernel backtraces get "nice" formated names, but unfortunately those are
not always helpfull with modern gcc and inlining.

For example I got this part of a backtrace from a panic:

rtwn_start.part.0() at netbsd:rtwn_start.part.0+0x61
rtwn_transmit() at netbsd:rtwn_transmit+0xb0
[...]

Unfortunately I can not use these addresses for gdb:

(gdb) list *(rtwn_start.part.0+0x61)
A syntax error in expression, near `.0+0x61)'.

addr2line does not deal with them either.

It would be helpfull if just the raw address value would be printed
in an extra column.

>How-To-Repeat:
s/a

>Fix:
n/a