linux-kernel - Re: [ 00/19] 3.10.1-stable review

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Date:	Sun, 14 Jul 2013 18:40:20 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:	Guenter Roeck <linux@...ck-us.net>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Dave Jones <davej@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	stable <stable@...r.kernel.org>
Subject: Re: [ 00/19] 3.10.1-stable review

On Sun, Jul 14, 2013 at 4:52 PM, Benjamin Herrenschmidt
<benh@...nel.crashing.org> wrote:
>
> So if I read this (and stable_kernel_rules.txt) correctly, that means that
> for example, let's say, we find in RHEL66 or SLES42 (possibly following
> a user report), for example, that PCI hotplug is broken with some category
> of devices on some machines.
>
> We do a fix, it's roughtly 4 or 5 lines, pretty self contained. We get it
> into the distro.
>
> That still doesn't qualify for stable right ?

Not before it's been in the distro, no. Something like a PCI change
*definitely* should never be marked for stable, unless it causes
crashes or is a _new_ regression that causes dead machines.

Because the likelihood that that 4-5 line "obvious" change breaks
things is pretty high. It needs testing elsewhere - on the machines
that weren't broken - in a big way first.

And don't bother talking about "obvious fix". Especially not when it
comes to the PCI code.

                 Linus
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