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Date:   Thu, 27 Aug 2020 11:12:56 -0700
From:   Brian Vazquez <brianvv@...gle.com>
To:     Sven Joachim <svenjoac@....de>
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>,
        David Miller <davem@...emloft.net>,
        Networking <netdev@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the net-next tree

Hi Sven,

I've been trying to reproduce it with your config but I didn't
succeed. I also looked at the file after the preprocessor and it
looked good:

ret = ({ __builtin_expect(!!(ops->match == fib6_rule_match), 1) ?
fib6_rule_match(rule, fl, flags) : ops->match(rule, fl, flags); })

Note that fib4_rule_match doesn't appear as the
CONFIG_IP_MULTIPLE_TABLES is not there.

Could you share more details on how you're compiling it and what
compiler you're using??

Thanks,
Brian



On Mon, Aug 24, 2020 at 1:08 AM Sven Joachim <svenjoac@....de> wrote:
>
> On 2020-08-22 08:16 +0200, Sven Joachim wrote:
>
> > On 2020-08-21 09:23 -0700, Brian Vazquez wrote:
> >
> >> Hi Sven,
> >>
> >> Sorry for the late reply, did you still see this after:
> >> https://patchwork.ozlabs.org/project/netdev/patch/20200803131948.41736-1-yuehaibing@huawei.com/
> >> ??
> >
> > That patch is apparently already in 5.9-rc1 as commit 80fbbb1672e7, so
> > yes I'm still seeing it.
>
> Still present in 5.9-rc2 as of today, I have attached my .config for
> reference.  Note that I have CONFIG_IPV6_MULTIPLE_TABLES=y, but
> CONFIG_IP_MULTIPLE_TABLES is not mentioned at all there.
>
> To build the kernel, I have now deselected IPV6_MULTIPLE_TABLES.  Not
> sure why this was enabled in my .config which has grown organically over
> many years.
>
> Cheers,
>        Sven
>
>
> >> On Mon, Aug 17, 2020 at 12:21 AM Sven Joachim <svenjoac@....de> wrote:
> >>
> >>> On 2020-07-29 21:27 +1000, Stephen Rothwell wrote:
> >>>
> >>> > Hi all,
> >>> >
> >>> > After merging the net-next tree, today's linux-next build (i386
> >>> defconfig)
> >>> > failed like this:
> >>> >
> >>> > x86_64-linux-gnu-ld: net/core/fib_rules.o: in function
> >>> `fib_rules_lookup':
> >>> > fib_rules.c:(.text+0x5c6): undefined reference to `fib6_rule_match'
> >>> > x86_64-linux-gnu-ld: fib_rules.c:(.text+0x5d8): undefined reference to
> >>> `fib6_rule_match'
> >>> > x86_64-linux-gnu-ld: fib_rules.c:(.text+0x64d): undefined reference to
> >>> `fib6_rule_action'
> >>> > x86_64-linux-gnu-ld: fib_rules.c:(.text+0x662): undefined reference to
> >>> `fib6_rule_action'
> >>> > x86_64-linux-gnu-ld: fib_rules.c:(.text+0x67a): undefined reference to
> >>> `fib6_rule_suppress'
> >>> > x86_64-linux-gnu-ld: fib_rules.c:(.text+0x68d): undefined reference to
> >>> `fib6_rule_suppress'
> >>>
> >>> FWIW, I saw these errors in 5.9-rc1 today, so the fix in commit
> >>> 41d707b7332f ("fib: fix fib_rules_ops indirect calls wrappers") was
> >>> apparently not sufficient.
> >>>
> >>> ,----
> >>> | $ grep IPV6 .config
> >>> | CONFIG_IPV6=m
> >>> | # CONFIG_IPV6_ROUTER_PREF is not set
> >>> | # CONFIG_IPV6_OPTIMISTIC_DAD is not set
> >>> | # CONFIG_IPV6_MIP6 is not set
> >>> | # CONFIG_IPV6_ILA is not set
> >>> | # CONFIG_IPV6_VTI is not set
> >>> | CONFIG_IPV6_SIT=m
> >>> | # CONFIG_IPV6_SIT_6RD is not set
> >>> | CONFIG_IPV6_NDISC_NODETYPE=y
> >>> | CONFIG_IPV6_TUNNEL=m
> >>> | CONFIG_IPV6_MULTIPLE_TABLES=y
> >>> | # CONFIG_IPV6_SUBTREES is not set
> >>> | # CONFIG_IPV6_MROUTE is not set
> >>> | # CONFIG_IPV6_SEG6_LWTUNNEL is not set
> >>> | # CONFIG_IPV6_SEG6_HMAC is not set
> >>> | # CONFIG_IPV6_RPL_LWTUNNEL is not set
> >>> | # CONFIG_NF_SOCKET_IPV6 is not set
> >>> | # CONFIG_NF_TPROXY_IPV6 is not set
> >>> | # CONFIG_NF_DUP_IPV6 is not set
> >>> | # CONFIG_NF_REJECT_IPV6 is not set
> >>> | # CONFIG_NF_LOG_IPV6 is not set
> >>> | CONFIG_NF_DEFRAG_IPV6=m
> >>> `----
> >>>
> >>> > Caused by commit
> >>> >
> >>> >   b9aaec8f0be5 ("fib: use indirect call wrappers in the most common
> >>> fib_rules_ops")
> >>> >
> >>> > # CONFIG_IPV6_MULTIPLE_TABLES is not set
> >>> >
> >>> > I have reverted that commit for today.
> >>>
> >>> Cheers,
> >>>        Sven
> >>>

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