objtool: skip non-text sections when adding return-thunk sites
The .discard.text section is added in order to reserve BRK, with a temporary function just so it can give it a size. This adds a relocation to the return thunk, which objtool will add to the .return_sites section. Linking will then fail as there are references to the .discard.text section. Do not add instructions from non-text sections to the list of return thunk calls, avoiding the reference to .discard.text. Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com> Acked-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1920e4be
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