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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
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

4
net/core/ethtool.c
View file

@ -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;
}