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Re: gdb 6.3 misses breakpoint on Linux when inferior does clone()

From: Daniel Jacobowitz <drow at false dot org>
To: Satish Mohan <Satish dot Mohan at Accenia dot com>
Cc: gdb at sources dot redhat dot com
Date: Thu, 26 May 2005 16:03:52 -0400
Subject: Re: gdb 6.3 misses breakpoint on Linux when inferior does clone()
References: <2DC041637C94C64C8039281448B323B2870FC0@abbott.domain.trailerparc.com>

On Thu, May 26, 2005 at 01:02:28PM -0700, Satish Mohan wrote:
> 
> 
> -----Original Message-----
> From: Daniel Jacobowitz [mailto:drow@false.org] 
> Sent: Thursday, May 26, 2005 12:44 PM
> To: Satish Mohan
> Cc: gdb@sources.redhat.com
> Subject: Re: gdb 6.3 misses breakpoint on Linux when inferior does clone()
> 
> On Thu, May 26, 2005 at 12:40:39PM -0700, Satish Mohan wrote:
> > Hi ?If the inferior does a clone(...,CLONE_VM,...) on Linux, then gdb
> > deletes breakpoints in the child which indirectly affects the parent
> > because of CLONE_VM. The following sample code illustrates the
> > problem:
> 
> The kernel does not provide any interface for GDB to know whether or
> not a clone syscall has used CLONE_VM.   
> 
> [Satish] Doesn't ptrace(PTRACE_GETREGS,...) provide that information ? Or is that arch. specific ?

No, it does not.

-- 
Daniel Jacobowitz
CodeSourcery, LLC

References:
- RE: gdb 6.3 misses breakpoint on Linux when inferior does clone()
  - From: Satish Mohan

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