linux-kernel - Re: [PATCH] net: Fix build when CONFIG

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Message-ID: <CANiDSCsm5W0nN9CmrHj9JP-FurVNZDs5b+0MxNUwOv3SvmUG6A@mail.gmail.com>
Date:   Fri, 11 Feb 2022 20:43:53 +0100
From:   Ricardo Ribalda <ribalda@...omium.org>
To:     Eric Dumazet <edumazet@...gle.com>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        David Ahern <dsahern@...nel.org>,
        netdev <netdev@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] net: Fix build when CONFIG_INET is not enabled

Hi Eric

I failed to find that patch. I only searched in linus/master. Please
ignore mine.

Thanks.

On Fri, 11 Feb 2022 at 18:24, Eric Dumazet <edumazet@...gle.com> wrote:
>
> On Fri, Feb 11, 2022 at 8:40 AM Ricardo Ribalda <ribalda@...omium.org> wrote:
> >
> > If the kernel is configured with CONFIG_NET, but without CONFIG_INET we
> > get the following error when building:
> >
> > sock.c:(.text+0x4c17): undefined reference to `__sk_defer_free_flush'
> >
> > Lets move __sk_defer_free_flush to sock.c
> >
>
> deja vu ?
>
> commit 48cec899e357cfb92d022a9c0df6bbe72a7f6951
> Author: Gal Pressman <gal@...dia.com>
> Date:   Thu Jan 20 14:34:40 2022 +0200
>
>     tcp: Add a stub for sk_defer_free_flush()
>
>     When compiling the kernel with CONFIG_INET disabled, the
>     sk_defer_free_flush() should be defined as a nop.
>
>     This resolves the following compilation error:
>       ld: net/core/sock.o: in function `sk_defer_free_flush':
>       ./include/net/tcp.h:1378: undefined reference to `__sk_defer_free_flush'
>
>     Fixes: 79074a72d335 ("net: Flush deferred skb free on socket destroy")
>     Reported-by: kernel test robot <lkp@...el.com>
>     Reviewed-by: Tariq Toukan <tariqt@...dia.com>
>     Signed-off-by: Gal Pressman <gal@...dia.com>
>     Reviewed-by: Eric Dumazet <edumazet@...gle.com>
>     Link: https://lore.kernel.org/r/20220120123440.9088-1-gal@nvidia.com
>     Signed-off-by: Jakub Kicinski <kuba@...nel.org>



-- 
Ricardo Ribalda