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e100: Avoid memcpy() over-reading of ETH_SS_STATS

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In preparation for FORTIFY_SOURCE performing compile-time and run-time
field bounds checking for memcpy(), memmove(), and memset(), avoid
intentionally reading across neighboring array fields.

The memcpy() is copying the entire structure, not just the first array.
Adjust the source argument so the compiler can do appropriate bounds
checking.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
This commit is contained in:
Kees Cook 2021-06-16 12:53:44 -07:00 committed by Tony Nguyen
parent c9183f45e4
commit cd74f25b28
1 changed files with 2 additions and 2 deletions
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4
drivers/net/ethernet/intel/e100.c
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@ -2715,10 +2715,10 @@ static void e100_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
{
switch (stringset) {
case ETH_SS_TEST:
memcpy(data, *e100_gstrings_test, sizeof(e100_gstrings_test));
memcpy(data, e100_gstrings_test, sizeof(e100_gstrings_test));
break;
case ETH_SS_STATS:
memcpy(data, *e100_gstrings_stats, sizeof(e100_gstrings_stats));
memcpy(data, e100_gstrings_stats, sizeof(e100_gstrings_stats));
break;
}
}