Re: I cannot stop execution by using "ctrl+c"

["colin" <colin@realtek.com.tw>]

Hi Andrew,
I had tried to disable serial drivers and it still didn't work.

The platform is the malta board with MIPS CPU.
I also tried to use newer kernel 2.6.10-rc2-mipscvs and the problem still
exists.

Thanks and regards,
Colin


----- Original Message ----- 
From: "Andrew Morton" <akpm@osdl.org>
To: "colin" <colin@realtek.com.tw>
Cc: <linux-kernel@vger.kernel.org>
Sent: Wednesday, November 24, 2004 7:07 AM
Subject: Re: I cannot stop execution by using "ctrl+c"


> "colin" <colin@realtek.com.tw> wrote:
> >
> > When using gdb to debug Linux kernel, I found that it cannot be stopped
> > temporarily by using "ctrl+c".
> > After the first strike of "ctrl+c", nothing happen.
> > After the second, Linux kernel will show these messages:
> >     Interrupted while waiting for the program.
> >     Give up (and stop debugging it)? (y or n)
> > If choose yes, kernel will totally stop and it goes back to gdb shell.
> > How can I stop kernel temporarily and then resume it?
>
> This means that the kgdb stub is no longer intercepting the serial
> interrupts.  This tends to happen when someone makes changes to the serial
> layer and the kgdb patch isn't updated to reflect those changes.
>
> You failed to mention the kernel version.  The kgdb stub in 2.6.10-rc2-mm3
> should work OK.
>
> Sometimes, disabling the serial drivers in .config will help.