NetBSD Problem Report #57224
From reinoud@gorilla.13thmonkey.org Fri Feb 10 12:23:25 2023
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Date: Fri, 10 Feb 2023 13:23:25 +0100 (CET)
From: reinoud@13thmonkey.org
Reply-To: reinoud@13thmonkey.org
To: gnats-bugs@NetBSD.org
Subject: NVMM regression, breakpoints no longer work
X-Send-Pr-Version: 3.95
>Number: 57224
>Category: port-amd64
>Synopsis: NVMM regression, breakpoints no longer work
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: port-amd64-maintainer
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Fri Feb 10 12:25:00 +0000 2023
>Originator: Reinoud Zandijk
>Release: NetBSD 9.99.107
>Organization:
NetBSD
>Environment:
System: NetBSD gorilla.13thmonkey.org 9.99.107 NetBSD 9.99.107 (GENERIC) #0: Sun Dec 18 17:14:55 CET 2022 reinoud@gorilla.13thmonkey.org:/tmp/obj-bisect/sys/arch/amd64/compile/GENERIC amd64
Architecture: x86_64
Machine: amd64
>Description:
Without NVMM, Qemu allows for setting breakpoints on a kernel that boots. With
NVMM it allows the breakpoint setting but ignores it on running. IIRC it used to work fine.
>How-To-Repeat:
Running Qemu with :
qemu-system-x86_64 -m 1024
-drive file=$FS,format=raw
-smp cores=2 $ACCEL
-snapshot
-nographic -s -S
-serial mon:telnet:127.0.0.1:2223,server,wait
....
and then
sleep 1
xfce4-terminal -e "telnet localhost 2223" &
sleep 1
/usr/bin/gdb
-ex "target remote localhost:1234"
-ex "break main"
-ex "break subr_prf.c:279" -ex "continue"
$KERNEL/netbsd.gdb
>Fix:
Run without -accell nvmm
>Unformatted:
(Contact us)
$NetBSD: query-full-pr,v 1.47 2022/09/11 19:34:41 kim Exp $
$NetBSD: gnats_config.sh,v 1.9 2014/08/02 14:16:04 spz Exp $
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