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Message-ID: <CAAvyFNg3=Dm00oMGwQnQPPeu0c8mEqM3ZvdK2xA5nFtpkitZRQ@mail.gmail.com>
Date:   Sun, 20 Nov 2022 11:17:15 +1100
From:   Jamie Bainbridge <jamie.bainbridge@...il.com>
To:     Colin Foster <colin.foster@...advantage.com>
Cc:     Eric Dumazet <edumazet@...gle.com>,
        Stephen Hemminger <stephen@...workplumber.org>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org
Subject: Re: Kernel build failure from d9282e48c6088

Yes, Geert sent a patch:

https://lore.kernel.org/netdev/d1ecf500f07e063d4e8e34f4045ddca55416c686.1668507036.git.geert+renesas@glider.be/

Jamie

On Sun, 20 Nov 2022 at 09:28, Colin Foster
<colin.foster@...advantage.com> wrote:
>
> Just a heads up, commit d9282e48c6088 ("tcp: Add listening address to
> SYN flood message") breaks if CONFIG_IPV6 isn't enabled.
>
> A simple change from an if() to a macro and I'm on my merry way. Not
> sure if you want anything more than that.
>
> In file included from ./include/asm-generic/bug.h:22,
>                  from ./arch/arm/include/asm/bug.h:60,
>                  from ./include/linux/bug.h:5,
>                  from ./include/linux/mmdebug.h:5,
>                  from ./include/linux/mm.h:6,
>                  from net/ipv4/tcp_input.c:67:
> net/ipv4/tcp_input.c: In function ‘tcp_syn_flood_action’:
> ./include/net/sock.h:387:37: error: ‘const struct sock_common’ has no member named ‘skc_v6_rcv_saddr’; did you mean ‘skc_rcv_saddr’?
>   387 | #define sk_v6_rcv_saddr __sk_common.skc_v6_rcv_saddr
>       |                                     ^~~~~~~~~~~~~~~~
> ./include/linux/printk.h:429:19: note: in definition of macro ‘printk_index_wrap’
>   429 |   _p_func(_fmt, ##__VA_ARGS__);    \
>       |                   ^~~~~~~~~~~
> ./include/linux/printk.h:530:2: note: in expansion of macro ‘printk’
>   530 |  printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
>       |  ^~~~~~
> ./include/linux/net.h:272:3: note: in expansion of macro ‘pr_info’
>   272 |   function(__VA_ARGS__);    \
>       |   ^~~~~~~~
> ./include/linux/net.h:288:2: note: in expansion of macro ‘net_ratelimited_function’
>   288 |  net_ratelimited_function(pr_info, fmt, ##__VA_ARGS__)
>       |  ^~~~~~~~~~~~~~~~~~~~~~~~
> ./include/linux/net.h:288:43: note: in expansion of macro ‘sk_v6_rcv_saddr’
>   288 |  net_ratelimited_function(pr_info, fmt, ##__VA_ARGS__)
>       |                                           ^~~~~~~~~~~
> net/ipv4/tcp_input.c:6847:4: note: in expansion of macro ‘net_info_ratelimited’
>  6847 |    net_info_ratelimited("%s: Possible SYN flooding on port [%pI6c]:%u. %s.\n",
>       |    ^~~~~~~~~~~~~~~~~~~~
>   CC      net/ipv4/icmp.o
> make[3]: *** [scripts/Makefile.build:250: net/ipv4/tcp_input.o] Error 1
> make[3]: *** Waiting for unfinished jobs....
> make[2]: *** [scripts/Makefile.build:500: net/ipv4] Error 2
> make[1]: *** [scripts/Makefile.build:500: net] Error 2
> make: *** [Makefile:1992: .] Error 2
>

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