diff options
| author | Joe Perches <joe@perches.com> | 2018-04-10 16:33:34 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-11 10:28:36 -0700 |
| commit | 478b17998066a6a70a7f265f4feba09c6945ab62 (patch) | |
| tree | 78ad1e87b9d73a99cfd409a673123d48ddb182d4 | |
| parent | e3c6bc95668b9b9fc1e74f221551dfa622ea9061 (diff) | |
| download | linux-478b17998066a6a70a7f265f4feba09c6945ab62.tar.bz2 | |
checkpatch: improve get_quoted_string for TRACE_EVENT macros
The get_quoted_string function does not expect invalid arguments.
The $stat test can return non-statements for complicated macros like
TRACE_EVENT.
Allow the $stat block and test for vsprintf misuses to exceed the actual
block length and possibly test invalid lines by validating the arguments
of get_quoted_string.
Return "" if either get_quoted_string argument is undefined.
Miscellanea:
o Properly align the comment for the vsprintf extension test
Link: http://lkml.kernel.org/r/9e9725342ca3dfc0f5e3e0b8ca3c482b0e5712cc.1520356392.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rwxr-xr-x | scripts/checkpatch.pl | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 788c90c1ae2a..18bf4bf1d0fc 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -1298,6 +1298,7 @@ sub sanitise_line { sub get_quoted_string { my ($line, $rawline) = @_; + return "" if (!defined($line) || !defined($rawline)); return "" if ($line !~ m/($String)/g); return substr($rawline, $-[0], $+[0] - $-[0]); } @@ -5807,7 +5808,7 @@ sub process { } } - # check for vsprintf extension %p<foo> misuses +# check for vsprintf extension %p<foo> misuses if ($^V && $^V ge 5.10.0 && defined $stat && $stat =~ /^\+(?![^\{]*\{\s*).*\b(\w+)\s*\(.*$String\s*,/s && |