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Date:      Fri, 6 Apr 2001 11:53:36 +0900
From:      "Hiroaki Yamazaki" <yamazaki.hiroaki@kcn.ts.fujitsu.co.jp>
To:        <questions@FreeBSD.org>
Subject:   ptrace(PT_GETDBREGS) failed
Message-ID:  <001101c0be44$c677d6d0$a65017ac@bc.kcn.ts.fujitsu.co.jp>

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Dear sir,

I'm very new to FreeBSD.
I'm tracing kernel source code of FreeBSD4.2 with remote GDB debug
function which instructed by user hand book section 23.5.

At every time after hit break point and continue, following message
,ptrace(PT_GETDBREGS) failed: No such process, appear on gdb display.
Why and how to solve this ?



kgdb) b key_timehandler
Breakpoint 2 at 0xc023d001: file ../../netkey/key.c, line 4018.
(kgdb) c
Continuing.
ptrace(PT_GETDBREGS) failed: No such process <--- Here
Breakpoint 2, key_timehandler () at ../../netkey/key.c:4018
(kgdb) p/x procfs_validdbregs
$5 = {int (struct proc *)} 0xc01e47a4 <procfs_validdbregs>
(kgdb) p/x *procfs_validdbregs


  
Hiroaki Yamazaki



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