[tip: sched/core] leaking_addresses: Always print a trailing newline

[tip-bot2 for Kees Cook]

The following commit has been merged into the sched/core branch of tip:

Commit-ID:     cf2a85efdade117e2169d6e26641016cbbf03ef0
Gitweb:        https://git.kernel.org/tip/cf2a85efdade117e2169d6e26641016cbbf03ef0
Author:        Kees Cook <keescook@xxxxxxxxxxxx>
AuthorDate:    Wed, 29 Sep 2021 15:02:18 -07:00
Committer:     Peter Zijlstra <peterz@xxxxxxxxxxxxx>
CommitterDate: Fri, 15 Oct 2021 11:25:13 +02:00

leaking_addresses: Always print a trailing newline

For files that lack trailing newlines and match a leaking address (e.g.
wchan[1]), the leaking_addresses.pl report would run together with the
next line, making things look corrupted.

Unconditionally remove the newline on input, and write it back out on
output.

[1] https://lore.kernel.org/all/20210103142726.GC30643@xsang-OptiPlex-9020/

Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Link: https://lkml.kernel.org/r/20211008111626.151570317@xxxxxxxxxxxxx
---
 scripts/leaking_addresses.pl | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/scripts/leaking_addresses.pl b/scripts/leaking_addresses.pl
index b2d8b8a..8f636a2 100755
--- a/scripts/leaking_addresses.pl
+++ b/scripts/leaking_addresses.pl
@@ -455,8 +455,9 @@ sub parse_file
 
 	open my $fh, "<", $file or return;
 	while ( <$fh> ) {
+		chomp;
 		if (may_leak_address($_)) {
-			print $file . ': ' . $_;
+			printf("$file: $_\n");
 		}
 	}
 	close $fh;