From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Tue, 26 Jun 2012 19:35:24 +0000 (-0700)
Subject: Revert "printk: return -EINVAL if the message len is bigger than the buf size"
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=6fda135c908d0f38a0167adcbd71094572e3059b;p=~shefty%2Frdma-dev.git

Revert "printk: return -EINVAL if the message len is bigger than the buf size"

This reverts commit b56a39ac263e5b8cafedd551a49c2105e68b98c2.

A better patch from Jan will follow this to resolve the issue.

Acked-by: Kay Sievers <kay@vrfy.org>
Cc: Fengguang Wu <wfg@linux.intel.com>
Cc: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Cc: Jan Beulich <JBeulich@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/kernel/printk.c b/kernel/printk.c
index d6a1412f6b0..ff05361962e 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -880,9 +880,7 @@ static int syslog_print(char __user *buf, int size)
 	syslog_seq++;
 	raw_spin_unlock_irq(&logbuf_lock);
 
-	if (len > size)
-		len = -EINVAL;
-	else if (len > 0 && copy_to_user(buf, text, len))
+	if (len > 0 && copy_to_user(buf, text, len))
 		len = -EFAULT;
 
 	kfree(text);