kallsyms: fix nonconverging kallsyms table with lld
ARM randconfig builds with lld sometimes show a build failure from kallsyms: Inconsistent kallsyms data Try make KALLSYMS_EXTRA_PASS=1 as a workaround The problem is the veneers/thunks getting added by the linker extend the symbol table, which in turn leads to more veneers being needed, so it may take a few extra iterations to converge. This bug has been fixed multiple times before, but comes back every time a new symbol name is used. lld uses a different set of identifiers from ld.bfd, so the additional ones need to be added as well. I looked through the sources and found that arm64 and mips define similar prefixes, so I'm adding those as well, aside from the ones I observed. I'm not sure about powerpc64, which seems to already be handled through a section match, but if it comes back, the "__long_branch_" and "__plt_" prefixes would have to get added as well. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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@ -112,6 +112,12 @@ static bool is_ignored_symbol(const char *name, char type)
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"__crc_", /* modversions */
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"__efistub_", /* arm64 EFI stub namespace */
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"__kvm_nvhe_", /* arm64 non-VHE KVM namespace */
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"__AArch64ADRPThunk_", /* arm64 lld */
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"__ARMV5PILongThunk_", /* arm lld */
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"__ARMV7PILongThunk_",
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"__ThumbV7PILongThunk_",
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"__LA25Thunk_", /* mips lld */
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"__microLA25Thunk_",
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NULL
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};
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