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Commit a77f5db3 authored by Ben Hutchings's avatar Ben Hutchings Committed by David S. Miller
Browse files

ethtool: Allocate register dump buffer with vmalloc() 



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

Signed-off-by: default avatarBen Hutchings <bhutchings@solarflare.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6099e3de

net/core/ethtool.c

+2 −2
Original line number Diff line number Diff line
@@ -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;

}