linux-kernel - Re: kdbus: to merge or not to merge?

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Message-ID: <1436437783.2682.104.camel@perches.com>
Date:	Thu, 09 Jul 2015 03:29:43 -0700
From:	Joe Perches <joe@...ches.com>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	Pavel Machek <pavel@....cz>, Greg KH <gregkh@...uxfoundation.org>,
	Andy Lutomirski <luto@...capital.net>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	David Herrmann <dh.herrmann@...il.com>,
	Djalal Harouni <tixxdz@...ndz.org>,
	Havoc Pennington <havoc.pennington@...il.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>,
	Tom Gundersen <teg@...m.no>, Daniel Mack <daniel@...que.org>
Subject: Re: kdbus: to merge or not to merge?

On Thu, 2015-07-09 at 10:39 +0200, Geert Uytterhoeven wrote:
> On Wed, Jul 8, 2015 at 3:54 PM, Pavel Machek <pavel@....cz> wrote:
> > Apparently, new tools are needed in the community, as normal review
> > comments did not stop drivers/android/binder.c merge.
> >
> > For example binder_transaction does not exactly look like a kernel
> > code, "TODO: fput" does not really invoke confidence, and amount of
> > BUG_ON()s is quite amazing...
> 
> Amazingly, checkpatch (without --strict) only complains about long lines.
> 
> Seems like the test for "BUG" is (and always has been) commented out...

Maybe (requires --strict when scanning files)
---
 scripts/checkpatch.pl | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 90e1edc..11c8186 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3439,13 +3439,15 @@ sub process {
 			}
 		}
 
-# # no BUG() or BUG_ON()
-# 		if ($line =~ /\b(BUG|BUG_ON)\b/) {
-# 			print "Try to use WARN_ON & Recovery code rather than BUG() or BUG_ON()\n";
-# 			print "$herecurr";
-# 			$clean = 0;
-# 		}
+# avoid BUG() or BUG_ON()
+		if ($line =~ /\b(?:BUG|BUG_ON)\b/) {
+			my $msg_type = \&WARN;
+			$msg_type = \&CHK if ($file);
+			&{$msg_type}("AVOID_BUG",
+				     "Avoid crashing the kernel - Try using WARN_ON & Recovery code rather than BUG() or BUG_ON()\n" . $herecurr);
+		}
 
+# avoid LINUX_VERSION_CODE
 		if ($line =~ /\bLINUX_VERSION_CODE\b/) {
 			WARN("LINUX_VERSION_CODE",
 			     "LINUX_VERSION_CODE should be avoided, code should be for the version to which it is merged\n" . $herecurr);


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