Fix a buffer overflow bug by removing the revision transform code.
[ 22.016214] isdnloop-ISDN-driver Rev 1.11.6.7
[ 22.097508] isdnloop: (loop0) virtual card added
[ 22.174400] Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: ffffffff83244972
[ 22.174400]
[ 22.436157] Pid: 1, comm: swapper Not tainted 3.5.0-bisect-00018-gfa8bbb1-dirty #129
[ 22.624071] Call Trace:
[ 22.720558] [<ffffffff832448c3>] ? CallcNew+0x56/0x56
[ 22.815248] [<ffffffff8222b623>] panic+0x110/0x329
[ 22.914330] [<ffffffff83244972>] ? isdnloop_init+0xaf/0xb1
[ 23.014800] [<ffffffff832448c3>] ? CallcNew+0x56/0x56
[ 23.090763] [<ffffffff8108e24b>] __stack_chk_fail+0x2b/0x30
[ 23.185748] [<ffffffff83244972>] isdnloop_init+0xaf/0xb1
Signed-off-by: Fengguang Wu <fengguang.wu@xxxxxxxxx>
---
drivers/isdn/isdnloop/isdnloop.c | 13 ++-----------
1 file changed, 2 insertions(+), 11 deletions(-)
--- linux.orig/drivers/isdn/isdnloop/isdnloop.c 2012-05-24 19:03:06.748430938 +0800
+++ linux/drivers/isdn/isdnloop/isdnloop.c 2012-08-02 11:57:16.806437909 +0800
@@ -16,7 +16,7 @@
#include <linux/sched.h>
#include "isdnloop.h"
-static char *revision = "$Revision: 1.11.6.7 $";
+static char *revision = "1.11.6.7";
static char *isdnloop_id = "loop0";
MODULE_DESCRIPTION("ISDN4Linux: Pseudo Driver that simulates an ISDN card");
@@ -1494,16 +1494,7 @@ isdnloop_addcard(char *id1)
static int __init
isdnloop_init(void)
{
- char *p;
- char rev[10];
-
- if ((p = strchr(revision, ':'))) {
- strcpy(rev, p + 1);
- p = strchr(rev, '$');
- *p = 0;
- } else
- strcpy(rev, " ??? ");
- printk(KERN_NOTICE "isdnloop-ISDN-driver Rev%s\n", rev);
+ printk(KERN_NOTICE "isdnloop-ISDN-driver Rev %s\n", revision);
if (isdnloop_id)
return (isdnloop_addcard(isdnloop_id));
_______________________________________________
devel mailing list
devel@xxxxxxxxxxxxxxxxxxxxxx
http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
