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| author | Arnd Bergmann <arnd@arndb.de> | 2021-02-04 16:29:47 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-02-17 11:02:24 +0100 |
| commit | 3dc2ba46500124ac350f9cd1a378e799f8f7fc88 (patch) | |
| tree | 76f3d423867c383e57c20fe200502885dbe514a1 /scripts | |
| parent | 11648f26b074758736a8663bde5ff94f2866e671 (diff) | |
| download | linux-stable-3dc2ba46500124ac350f9cd1a378e799f8f7fc88.tar.gz linux-stable-3dc2ba46500124ac350f9cd1a378e799f8f7fc88.tar.bz2 linux-stable-3dc2ba46500124ac350f9cd1a378e799f8f7fc88.zip | |
kallsyms: fix nonconverging kallsyms table with lld
[ Upstream commit efe6e3068067212b85c2d0474b5ee3b2d0c7adab ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/kallsyms.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c index 7ecd2ccba531..54ad86d13784 100644 --- a/scripts/kallsyms.c +++ b/scripts/kallsyms.c @@ -112,6 +112,12 @@ static bool is_ignored_symbol(const char *name, char type) "__crc_", /* modversions */ "__efistub_", /* arm64 EFI stub namespace */ "__kvm_nvhe_", /* arm64 non-VHE KVM namespace */ + "__AArch64ADRPThunk_", /* arm64 lld */ + "__ARMV5PILongThunk_", /* arm lld */ + "__ARMV7PILongThunk_", + "__ThumbV7PILongThunk_", + "__LA25Thunk_", /* mips lld */ + "__microLA25Thunk_", NULL }; |