diff options
Diffstat (limited to 'scripts')
| -rwxr-xr-x | scripts/leaking_addresses.pl | 66 |
1 files changed, 60 insertions, 6 deletions
diff --git a/scripts/leaking_addresses.pl b/scripts/leaking_addresses.pl index 4610ad3c80c2..1d6ab7f1b10c 100755 --- a/scripts/leaking_addresses.pl +++ b/scripts/leaking_addresses.pl @@ -21,6 +21,7 @@ use File::Spec; use Cwd 'abs_path'; use Term::ANSIColor qw(:constants); use Getopt::Long qw(:config no_auto_abbrev); +use Config; my $P = $0; my $V = '0.01'; @@ -28,6 +29,11 @@ my $V = '0.01'; # Directories to scan. my @DIRS = ('/proc', '/sys'); +# Script can only grep for kernel addresses on the following architectures. If +# your architecture is not listed here and has a grep'able kernel address please +# consider submitting a patch. +my @SUPPORTED_ARCHITECTURES = ('x86_64', 'ppc64'); + # Command line options. my $help = 0; my $debug = 0; @@ -137,6 +143,20 @@ if (!$input_raw and ($squash_by_path or $squash_by_filename)) { exit(128); } +if (!is_supported_architecture()) { + printf "\nScript does not support your architecture, sorry.\n"; + printf "\nCurrently we support: \n\n"; + foreach(@SUPPORTED_ARCHITECTURES) { + printf "\t%s\n", $_; + } + + my $archname = $Config{archname}; + printf "\n\$ perl -MConfig -e \'print \"\$Config{archname}\\n\"\'\n"; + printf "%s\n", $archname; + + exit(129); +} + if ($output_raw) { open my $fh, '>', $output_raw or die "$0: $output_raw: $!\n"; select $fh; @@ -152,6 +172,31 @@ sub dprint printf(STDERR @_) if $debug; } +sub is_supported_architecture +{ + return (is_x86_64() or is_ppc64()); +} + +sub is_x86_64 +{ + my $archname = $Config{archname}; + + if ($archname =~ m/x86_64/) { + return 1; + } + return 0; +} + +sub is_ppc64 +{ + my $archname = $Config{archname}; + + if ($archname =~ m/powerpc/ and $archname =~ m/64/) { + return 1; + } + return 0; +} + sub is_false_positive { my ($match) = @_; @@ -161,10 +206,12 @@ sub is_false_positive return 1; } - - if ($match =~ '\bf{10}600000\b' or# vsyscall memory region, we should probably check against a range here. - $match =~ '\bf{10}601000\b') { - return 1; + if (is_x86_64) { + # vsyscall memory region, we should probably check against a range here. + if ($match =~ '\bf{10}600000\b' or + $match =~ '\bf{10}601000\b') { + return 1; + } } return 0; @@ -174,7 +221,7 @@ sub is_false_positive sub may_leak_address { my ($line) = @_; - my $address = '\b(0x)?ffff[[:xdigit:]]{12}\b'; + my $address_re; # Signal masks. if ($line =~ '^SigBlk:' or @@ -187,7 +234,14 @@ sub may_leak_address return 0; } - while (/($address)/g) { + # One of these is guaranteed to be true. + if (is_x86_64()) { + $address_re = '\b(0x)?ffff[[:xdigit:]]{12}\b'; + } elsif (is_ppc64()) { + $address_re = '\b(0x)?[89abcdef]00[[:xdigit:]]{13}\b'; + } + + while (/($address_re)/g) { if (!is_false_positive($1)) { return 1; } |