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Date:   Fri, 16 Apr 2021 07:21:11 +0200
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     Guenter Roeck <linux@roeck-us.net>
Cc:     stable <stable@vger.kernel.org>
Subject: Re: netfilter/x_tables patches for v4.4.y..v4.14.y
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 <20210415174146.GA30478@roeck-us.net>
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On Thu, Apr 15, 2021 at 10:41:46AM -0700, Guenter Roeck wrote:
> On Thu, Apr 15, 2021 at 06:37:41PM +0200, Greg Kroah-Hartman wrote:
> > On Thu, Apr 15, 2021 at 09:28:15AM -0700, Guenter Roeck wrote:
> > > Hi Greg,
> > > 
> > > please consider applying the following two patches to v4.4.y, v4.9.y, and v4.14.y
> > > 
> > > 80055dab5de0 ("netfilter: x_tables: make xt_replace_table wait until old rules are not used anymore")
> > > 175e476b8cdf ("netfilter: x_tables: Use correct memory barriers.")
> > 
> > The second patch here says that it's only needed to go back until:
> > 	    Fixes: 7f5c6d4f665b ("netfilter: get rid of atomic ops in fast path")
> > 
> > Which is only backported to 4.19.  So why do older kernels need that, is
> > the fixes tag wrong?
> > 
> Where do you get that from ? 7f5c6d4f665b is, from what I can see, in v3.0.
> 
> $ git describe 7f5c6d4f665b
> v2.6.39-rc1-159-g7f5c6d4f665b
> $ git log --oneline v2.6.39..v3.0 | grep "netfilter: get rid of atomic ops in fast path"
> 7f5c6d4f665b netfilter: get rid of atomic ops in fast path

Ah, my tool that checks where a patch comes from doesn't look past 3.1
if it finds that it was mentioned in a released tree for various
reasons, but when I look at the full sha1, it finds it properly, my
fault...

thanks,

greg k-h