From: Ben Hutchings <bhutchings@solarflare.com>
Date: Mon, 20 Sep 2010 08:42:17 +0000 (+0000)
Subject: ethtool: Allocate register dump buffer with vmalloc()
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=a77f5db361ed9953b5b749353ea2c7fed2bf8d93;p=openwrt%2Fstaging%2Fblogic.git

ethtool: Allocate register dump buffer with vmalloc()

Some NICs have huge register files which exceed the maximum heap
allocation size.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 91ffce20c36b..dae2fd053c2b 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -815,7 +815,7 @@ static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
 	if (regs.len > reglen)
 		regs.len = reglen;
 
-	regbuf = kmalloc(reglen, GFP_USER);
+	regbuf = vmalloc(reglen);
 	if (!regbuf)
 		return -ENOMEM;
 
@@ -830,7 +830,7 @@ static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
 	ret = 0;
 
  out:
-	kfree(regbuf);
+	vfree(regbuf);
 	return ret;
 }