NetBSD Problem Report #55851
From martin@aprisoft.de Tue Dec 8 14:25:39 2020
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Date: Tue, 8 Dec 2020 15:25:30 +0100 (CET)
From: martin@NetBSD.org
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To: gnats-bugs@NetBSD.org
Subject: gdb and kernel backtraces disagree about symbol name syntax
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>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
>Last-Modified: Fri Dec 11 18:30:01 +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:/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
>Audit-Trail:
From: "Christos Zoulas" <christos@netbsd.org>
To: gnats-bugs@gnats.NetBSD.org
Cc:
Subject: PR/55851 CVS commit: src/external/gpl3/gdb/dist/gdb
Date: Fri, 11 Dec 2020 13:25:45 -0500
Module Name: src
Committed By: christos
Date: Fri Dec 11 18:25:45 UTC 2020
Modified Files:
src/external/gpl3/gdb/dist/gdb: c-exp.y
Log Message:
PR/55851: Martin Husemann: recognize <symbol>.part.<n> names
This is gross; perhaps we should hide them completely (not print them
in stack traces etc.)
To generate a diff of this commit:
cvs rdiff -u -r1.1.1.9 -r1.2 src/external/gpl3/gdb/dist/gdb/c-exp.y
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
(Contact us)
$NetBSD: query-full-pr,v 1.46 2020/01/03 16:35:01 leot Exp $
$NetBSD: gnats_config.sh,v 1.9 2014/08/02 14:16:04 spz Exp $
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