linux-kernel - Re: [GIT PULL] kgdb regression fixes for 2.6.35-rc5

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Message-ID: <AANLkTikXGm0WK+N=YMWJc+hBgVAyLc0adu4K1iX5UMW=@mail.gmail.com>
Date:	Wed, 28 Jul 2010 14:26:06 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	Jason Wessel <jason.wessel@...driver.com>,
	linux-kernel@...r.kernel.org, kgdb-bugreport@...ts.sourceforge.net
Subject: Re: [GIT PULL] kgdb regression fixes for 2.6.35-rc5

On Wed, Jul 28, 2010 at 2:17 PM, Frederic Weisbecker <fweisbec@...il.com> wrote:
>
> I'm sorry I spot it a bit late.
> There is a little issue in this patch, irqs won't
> be restored:
>
> @@ -588,9 +588,10 @@ int kgdb_ll_trap(int cmd, const char *str,
>        if (!kgdb_io_module_registered)
>                return NOTIFY_DONE;
>
> +       local_irq_save(flags);
>        return __kgdb_notify(&args, cmd);
> +       local_irq_restore(flags);
>  }

Yeah, that's obviously crap. I also wonder why __kgdb_notify messes up
the flags to begin with.

             Linus
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