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[ Upstream commita409fc1463] The string allocated in sym_warn_unmet_dep() is never freed, leading to a memory leak when an unmet dependency is detected. Fixes:f8f69dc0b4("kconfig: make unmet dependency warnings readable") Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Petr Vorel <pvorel@suse.cz> Signed-off-by: Sasha Levin <sashal@kernel.org>