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authorRandy Dunlap <rdunlap@infradead.org>2020-08-27 00:21:43 +0300
committerMasahiro Yamada <masahiroy@kernel.org>2020-09-03 06:16:30 +0300
commita73fbfce2cc28883f659414d598e6e60ca2214b4 (patch)
treed70bdad14355bd6d5ae9c6705eaea09ea6b07d04 /scripts/kconfig/streamline_config.pl
parent91a9d50219f6338d874650b4f035f32844be829e (diff)
downloadlinux-a73fbfce2cc28883f659414d598e6e60ca2214b4.tar.xz
kconfig: streamline_config.pl: check defined(ENV variable) before using it
A user reported: 'Use of uninitialized value $ENV{"LMC_KEEP"} in split at ./scripts/kconfig/streamline_config.pl line 596.' so first check that $ENV{LMC_KEEP} is defined before trying to use it. Fixes: c027b02d89fd ("streamline_config.pl: add LMC_KEEP to preserve some kconfigs") Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'scripts/kconfig/streamline_config.pl')
-rwxr-xr-xscripts/kconfig/streamline_config.pl5
1 files changed, 4 insertions, 1 deletions
diff --git a/scripts/kconfig/streamline_config.pl b/scripts/kconfig/streamline_config.pl
index 19857d18d814..1c78ba49ca99 100755
--- a/scripts/kconfig/streamline_config.pl
+++ b/scripts/kconfig/streamline_config.pl
@@ -593,7 +593,10 @@ while ($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]};