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Date:   Mon, 1 Mar 2021 20:05:30 +0100
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     Naresh Kamboju <naresh.kamboju@linaro.org>
Cc:     Sahaj Sarup <sahaj.sarup@linaro.org>,
        linux-stable <stable@vger.kernel.org>,
        lkft-triage@lists.linaro.org
Subject: Re: sparc: icmpv6.h:70:2: error: implicit declaration of function
 '__icmpv6_send'; did you mean 'icmpv6_send'?
 [-Werror=implicit-function-declaration]
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On Mon, Mar 01, 2021 at 10:42:34PM +0530, Naresh Kamboju wrote:
> On stable rc 5.11 sparc allnoconfig and tinyconfig failed with gcc-8,
> gcc-9 and gcc-10.
> 
> make --silent --keep-going --jobs=8
> O=/home/tuxbuild/.cache/tuxmake/builds/1/tmp ARCH=sparc
> CROSS_COMPILE=sparc64-linux-gnu- 'CC=sccache sparc64-linux-gnu-gcc'
> 'HOSTCC=sccache gcc'
> <stdin>:1335:2: warning: #warning syscall rseq not implemented [-Wcpp]
> In file included from include/net/ndisc.h:50,
>                  from include/net/ipv6.h:21,
>                  from include/linux/sunrpc/clnt.h:28,
>                  from include/linux/nfs_fs.h:32,
>                  from init/do_mounts.c:22:
> include/linux/icmpv6.h: In function 'icmpv6_ndo_send':
> include/linux/icmpv6.h:70:2: error: implicit declaration of function
> '__icmpv6_send'; did you mean 'icmpv6_send'?
> [-Werror=implicit-function-declaration]
>    70 |  __icmpv6_send(skb_in, type, code, info, &parm);
>       |  ^~~~~~~~~~~~~
>       |  icmpv6_send
> cc1: some warnings being treated as errors
> make[2]: *** [scripts/Makefile.build:304: init/do_mounts.o] Error 1
> 
> Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>

What is the odds that Linus's tree also fails with this configuration
and arch right now?

thanks,

greg k-h