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The latest change of asm goto support check added passing of KBUILD_CFLAGS to compiler. When these flags reference gcc plugins that are not built yet, the check fails. When one runs "make bzImage" followed by "make modules", the kernel is always built with HAVE_JUMP_LABEL disabled, while the modules are built depending on CONFIG_JUMP_LABEL. If HAVE_JUMP_LABEL macro happens to be different, modules are built with undefined references, e.g.: ERROR: "static_key_slow_inc" [net/netfilter/xt_TEE.ko] undefined! ERROR: "static_key_slow_dec" [net/netfilter/xt_TEE.ko] undefined! ERROR: "static_key_slow_dec" [net/netfilter/nft_meta.ko] undefined! ERROR: "static_key_slow_inc" [net/netfilter/nft_meta.ko] undefined! ERROR: "nf_hooks_needed" [net/netfilter/ipvs/ip_vs.ko] undefined! ERROR: "nf_hooks_needed" [net/ipv6/ipv6.ko] undefined! ERROR: "static_key_count" [net/ipv6/ipv6.ko] undefined! ERROR: "static_key_slow_inc" [net/ipv6/ipv6.ko] undefined! This change moves the check before all these references are added to KBUILD_CFLAGS. This is correct because subsequent KBUILD_CFLAGS modifications are not relevant to this check. Reported-by: NAnton V. Boyarshinov <boyarsh@altlinux.org> Fixes: 35f860f9 ("jump label: pass kbuild_cflags when checking for asm goto support") Cc: stable@vger.kernel.org # v4.10 Signed-off-by: NGleb Fotengauer-Malinovskiy <glebfm@altlinux.org> Signed-off-by: NDmitry V. Levin <ldv@altlinux.org> Acked-by: NSteven Rostedt (VMware) <rostedt@goodmis.org> Acked-by: NDavid Lin <dtwlin@google.com> Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
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