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ethtool: Allocate register dump buffer with vmalloc()

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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>
This commit is contained in:
Ben Hutchings 2010-09-20 08:42:17 +00:00 committed by David S. Miller
parent 6099e3dea9
commit a77f5db361
1 changed files with 2 additions and 2 deletions
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4
net/core/ethtool.c
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@ -815,7 +815,7 @@ static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
if (regs.len > reglen) if (regs.len > reglen)
regs.len = reglen; regs.len = reglen;
regbuf = kmalloc(reglen, GFP_USER); regbuf = vmalloc(reglen);
if (!regbuf) if (!regbuf)
return -ENOMEM; return -ENOMEM;
@ -830,7 +830,7 @@ static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
ret = 0; ret = 0;
out: out:
kfree(regbuf); vfree(regbuf);
return ret; return ret;
} }