From e1399c8e3a76cdbeae5598f117fae8ab954afa3f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20L=C3=B6pke?= <loepke@edfritsch.de>
Date: Sun, 8 May 2016 20:13:50 +0200
Subject: [PATCH] Added crash log from faulty buffer read.
---
20160425/chardev-1write.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/20160425/chardev-1write.c b/20160425/chardev-1write.c
index 9cd2373..57b540f 100644
--- a/20160425/chardev-1write.c
+++ b/20160425/chardev-1write.c
@@ -193,7 +193,9 @@ device_write(struct file *filp, const char *buff, size_t len, loff_t * off)
else {
int i;
for(i = 0; i < len; i++) //Save the given string
- msg_username[i] = buff[i]; //Heres the CRASH
+ get_user(msg_username[i], buff + i);
+ //msg_username[i] = buff[i]; //Heres the CRASH
+ //printk(KERN_INFO "Got %c at %d from %d bytes.\n", buff[i], i, (int)len);
for(i = len; i < USERBUF_LEN; i++) //Zeroing the rest of mem
msg_username[i] = 0;
printk(KERN_INFO "%s: Successfully got %d bytes!\n",
--
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