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wifi: mwifiex: Fix the size of a memory allocation in mwifiex_ret_802_11_scan()

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[ Upstream commit d9aef04fcfa81ee4fb2804a21a3712b7bbd936af ]

The type of "mwifiex_adapter->nd_info" is "struct cfg80211_wowlan_nd_info",
not "struct cfg80211_wowlan_nd_match".

Use struct_size() to ease the computation of the needed size.

The current code over-allocates some memory, so is safe.
But it wastes 32 bytes.

Fixes: 7d7f07d8c5 ("mwifiex: add wowlan net-detect support")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/7a6074fb056d2181e058a3cc6048d8155c20aec7.1683371982.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Christophe JAILLET 2023-05-06 15:53:15 +02:00 committed by Greg Kroah-Hartman
parent 3ae910a375
commit c62e2ac02e
1 changed files with 3 additions and 3 deletions
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6
drivers/net/wireless/marvell/mwifiex/scan.c
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@ -2200,9 +2200,9 @@ int mwifiex_ret_802_11_scan(struct mwifiex_private *priv,
if (nd_config) {
adapter->nd_info =
kzalloc(sizeof(struct cfg80211_wowlan_nd_match) +
sizeof(struct cfg80211_wowlan_nd_match *) *
scan_rsp->number_of_sets, GFP_ATOMIC);
kzalloc(struct_size(adapter->nd_info, matches,
scan_rsp->number_of_sets),
GFP_ATOMIC);
if (adapter->nd_info)
adapter->nd_info->n_matches = scan_rsp->number_of_sets;