Re: netfilter/x_tables patches for v4.4.y..v4.14.y

[Guenter Roeck <linux@roeck-us.net>]

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

Thanks,
Guenter