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From: Gerd Knorr <kraxel@bytesex.org>
To: Markus Trippelsdorf <markus@trippelsdorf.de>
Cc: Adrian Bunk <bunk@stusta.de>, Andrew Morton <akpm@osdl.org>,
	linux-kernel@vger.kernel.org, video4linux-list@redhat.com
Subject: Re: [patch] 2.6.10-rc1-mm4: bttv-driver.c compile error
Date: Thu, 18 Nov 2004 17:58:54 +0100	[thread overview]
Message-ID: <20041118165853.GA22216@bytesex> (raw)
In-Reply-To: <1100085569.1591.6.camel@lb.loomes.de>

> kobject_register failed forBA€ÿÿÿÿ (-17)

Yet another kobject bug.  It uses the varargs list twice in a illegal
way.  That doesn't harm on i386 by pure luck, but blows things up on
amd64 machines.  The patch below fixes it.

Enjoy,

  Gerd

==============================[ cut here ]==============================
Subject: [patch] fix kobject varargs bug

Using var args list twice without calling va_start twice is illegal.

Signed-off-by: Gerd Knorr <kraxel@bytesex.org>
---
 lib/kobject.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

Index: linux-2.6.10-rc2/lib/kobject.c
===================================================================
--- linux-2.6.10-rc2.orig/lib/kobject.c	2004-11-17 18:41:43.000000000 +0100
+++ linux-2.6.10-rc2/lib/kobject.c	2004-11-18 17:37:08.851041667 +0100
@@ -232,11 +232,12 @@ int kobject_set_name(struct kobject * ko
 	va_list args;
 	char * name;
 
-	va_start(args,fmt);
 	/* 
 	 * First, try the static array 
 	 */
+	va_start(args,fmt);
 	need = vsnprintf(kobj->name,limit,fmt,args);
+	va_end(args);
 	if (need < limit) 
 		name = kobj->name;
 	else {
@@ -249,7 +250,9 @@ int kobject_set_name(struct kobject * ko
 			error = -ENOMEM;
 			goto Done;
 		}
+		va_start(args,fmt);
 		need = vsnprintf(name,limit,fmt,args);
+		va_end(args);
 
 		/* Still? Give up. */
 		if (need >= limit) {
@@ -266,7 +269,6 @@ int kobject_set_name(struct kobject * ko
 	/* Now, set the new name */
 	kobj->k_name = name;
  Done:
-	va_end(args);
 	return error;
 }
 

  reply	other threads:[~2004-11-18 17:23 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-11-09 15:49 2.6.10-rc1-mm4 Andrew Morton
2004-11-09 16:11 ` 2.6.10-rc1-mm4 Jens Axboe
2004-11-09 19:53   ` 2.6.10-rc1-mm4 Andrew Morton
2004-11-09 21:14     ` 2.6.10-rc1-mm4 Jens Axboe
2004-11-09 21:57       ` 2.6.10-rc1-mm4 Jens Axboe
2004-11-10 16:28       ` 2.6.10-rc1-mm4 Jens Axboe
2004-11-09 16:32 ` 2.6.10-rc1-mm4 Jesse Barnes
2004-11-09 16:41 ` 2.6.10-rc1-mm4 Markus Trippelsdorf
2004-11-09 21:11   ` [patch] 2.6.10-rc1-mm4: bttv-driver.c compile error Adrian Bunk
2004-11-09 21:43     ` Gerd Knorr
2004-11-09 21:55     ` Markus Trippelsdorf
2004-11-10  8:24       ` Gerd Knorr
2004-11-10  8:47         ` Andrew Morton
2004-11-10 11:19         ` Markus Trippelsdorf
2004-11-18 16:58           ` Gerd Knorr [this message]
2004-11-19 11:46             ` Markus Trippelsdorf
     [not found]             ` <419E689A.5000704@backtobasicsmgmt.com>
2004-11-22  9:43               ` var args in kernel? Gerd Knorr
2004-11-22 10:16                 ` Jakub Jelinek
2004-11-22 10:29                   ` Gerd Knorr
2004-11-22 11:03                     ` Jan Engelhardt
2004-11-22 11:33                       ` Jakub Jelinek
2004-11-22 11:39                         ` Jan Engelhardt
2004-11-22 12:41                           ` Andreas Schwab
2004-11-22 21:42                         ` Bill Davidsen
2004-11-22 23:18                           ` Jakub Jelinek
2004-11-22 23:43                           ` Andreas Schwab
2004-11-23 14:05                             ` Jan Engelhardt
2004-11-23 15:07                               ` Andreas Schwab
2004-11-23 16:17                                 ` Jan Engelhardt
2004-11-23 16:45                                   ` Andreas Schwab
2004-12-01 22:49                             ` Bill Davidsen
2004-12-02  0:26                               ` Andreas Schwab
2004-11-09 17:02 ` 2.6.10-rc1-mm4 Stefano Rivoir
2004-11-09 23:18   ` 2.6.10-rc1-mm4 Dave Airlie
2004-11-10  1:30     ` 2.6.10-rc1-mm4 Dave Airlie
2004-11-10  7:44     ` 2.6.10-rc1-mm4 Stefano Rivoir
2004-11-11  7:39     ` 2.6.10-rc1-mm4 Stefano Rivoir
2004-11-09 20:30 ` 2.6.10-rc1-mm4: net/tulip/xircom_tulip_cb.c compile error Adrian Bunk
2004-11-09 21:23 ` [2.6 patch] remove stale bttv_parse prototype Adrian Bunk
2004-11-10 11:40 ` 2.6.10-rc1-mm4 Fabio Coatti
2004-11-10 12:36   ` 2.6.10-rc1-mm4 Rafael J. Wysocki
2004-11-11 10:17 ` 2.6.10-rc1-mm4 Stefano Rivoir
2004-11-11 10:24   ` 2.6.10-rc1-mm4 Andrew Morton

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