| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.8 178/186] kconfig: streamline_config.pl: check defined(ENV variable) before using it | Date | Tue, 8 Sep 2020 17:25:20 +0200 |
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From: Randy Dunlap <rdunlap@infradead.org>
commit a73fbfce2cc28883f659414d598e6e60ca2214b4 upstream.
A user reported: 'Use of uninitialized value $ENV{"LMC_KEEP"} in split at ./scripts/kconfig/streamline_config.pl line 596.'
so first check that $ENV{LMC_KEEP} is defined before trying to use it.
Fixes: c027b02d89fd ("streamline_config.pl: add LMC_KEEP to preserve some kconfigs") Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- scripts/kconfig/streamline_config.pl | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
--- a/scripts/kconfig/streamline_config.pl +++ b/scripts/kconfig/streamline_config.pl @@ -593,7 +593,10 @@ while ($repeat) { } my %setconfigs; -my @preserved_kconfigs = split(/:/,$ENV{LMC_KEEP}); +my @preserved_kconfigs; +if (defined($ENV{'LMC_KEEP'})) { + @preserved_kconfigs = split(/:/,$ENV{LMC_KEEP}); +} sub in_preserved_kconfigs { my $kconfig = $config2kfile{$_[0]};
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