linux-kernel - [PATCH] out-of-tree: Whack warning off in kernel/cred.c ...

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Date:	Sat, 12 Sep 2009 10:40:57 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	James Morris <jmorris@...ei.org>, Thomas Liu <tliu@...hat.com>,
	Eric Paris <eparis@...hat.com>
Cc:	linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: [PATCH] out-of-tree: Whack warning off in kernel/cred.c ...


* Ingo Molnar <mingo@...e.hu> wrote:

> > I'll try a blind (and manual) revert of:
> > 
> > ee18d64: KEYS: Add a keyctl to install a process's session keyring 
> > on its parent [try #6
> 
> that didnt do the trick, nor did this:
> 
>   1a51e09: Revert "KEYS: Add a keyctl to install a process's session keyring on its parent
> 
> These were the only two changes to cred.c.

Whacking off the BUG()s via the hack below gave me a booting system.

( Btw., WARN_ONCE() / WARN_ON_ONCE() constructs are in fashion these 
  days not BUG() - they are real time savers ;-) )

	Ingo

---------->
>From 2723334da705b2bb162bb6c7dabbbb4806278758 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@...e.hu>
Date: Sat, 12 Sep 2009 10:21:33 +0200
Subject: [PATCH] out-of-tree: Whack warning off in kernel/cred.c ...

Prevent a crash with selinux=0.

NOT-Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 kernel/cred.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/kernel/cred.c b/kernel/cred.c
index 006fcab..782e362 100644
--- a/kernel/cred.c
+++ b/kernel/cred.c
@@ -817,10 +817,12 @@ static void dump_invalid_creds(const struct cred *cred, const char *label,
  */
 void __invalid_creds(const struct cred *cred, const char *file, unsigned line)
 {
+#if 0
 	printk(KERN_ERR "CRED: Invalid credentials\n");
 	printk(KERN_ERR "CRED: At %s:%u\n", file, line);
 	dump_invalid_creds(cred, "Specified", current);
 	BUG();
+#endif
 }
 EXPORT_SYMBOL(__invalid_creds);
 
@@ -844,6 +846,7 @@ void __validate_process_creds(struct task_struct *tsk,
 	return;
 
 invalid_creds:
+#if 0
 	printk(KERN_ERR "CRED: Invalid process credentials\n");
 	printk(KERN_ERR "CRED: At %s:%u\n", file, line);
 
@@ -853,6 +856,8 @@ invalid_creds:
 	else
 		printk(KERN_ERR "CRED: Effective creds == Real creds\n");
 	BUG();
+#endif
+	;
 }
 EXPORT_SYMBOL(__validate_process_creds);
 
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