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

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?

thanks,

greg k-h