Commit 3dd14996 authored by Gustavo A. R. Silva's avatar Gustavo A. R. Silva Committed by David S. Miller

ethtool: ioctl: Use array_size() in copy_to_user()

Use array_size() helper instead of the open-coded version in
copy_to_user(). These sorts of multiplication factors need to
be wrapped in array_size().

This issue was found with the help of Coccinelle and, audited and fixed
manually.

Addresses-KSPP-ID: https://github.com/KSPP/linux/issues/83Signed-off-by: default avatarGustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 682591f7
......@@ -1918,7 +1918,7 @@ static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
if (copy_to_user(useraddr, &stats, sizeof(stats)))
goto out;
useraddr += sizeof(stats);
if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64)))
if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64))))
goto out;
ret = 0;
......@@ -1973,7 +1973,7 @@ static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr)
if (copy_to_user(useraddr, &stats, sizeof(stats)))
goto out;
useraddr += sizeof(stats);
if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64)))
if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64))))
goto out;
ret = 0;
......
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