linux-kernel - Re: Top kernel oopses/warnings this week

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Message-ID: <20071218181343.GA19691@waste.org>
Date:	Tue, 18 Dec 2007 12:13:43 -0600
From:	Matt Mackall <mpm@...enic.com>
To:	Arjan van de Ven <arjan@...ux.intel.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Tony Luck <tony.luck@...el.com>, Ingo Molnar <mingo@...e.hu>,
	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>, protasnb@...il.com,
	tytso@...nk.org
Subject: Re: Top kernel oopses/warnings this week

On Tue, Dec 18, 2007 at 10:06:14AM -0800, Arjan van de Ven wrote:
> Linus Torvalds wrote:
> >
> >On Mon, 17 Dec 2007, Arjan van de Ven wrote:
> >>+char *get_boot_uuid(void)
> >>+{
> >>+	static char target[38];
> >>+	unsigned char *uuid;
> >>+
> >>+	if (sysctl_bootid[8] == 0)
> >>+		generate_random_uuid(sysctl_bootid);
> >>+	/* sysctl_bootid is signed, to print we need unsigned .. */
> >>+	uuid = sysctl_bootid;
> >>+
> >>+	if (target[0] == 0) {
> >>+		sprintf(target, 
> >>"%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-"
> >>+			"%02x%02x%02x%02x%02x%02x",
> >
> >Why isn't *everything* inside that "if (target[0] == 0" check?
> >
> >IOW, that function should look something like
> 
> 
> ok so this got a lot more involved than I was hoping for;
> something like below will help me (and kerneloops.org ;) for the short term,
> while I'll see what I can do for random.c in a few dead moments soon, for a 
> 2.6.25
> enhancement...

Might as well leave out the null UUID, no sense in claiming to have
one when you don't. It's easy for a parser to cut on "^---["

-- 
Mathematics is the supreme nostalgia of our time.
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