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net: mwifiex: fix a NULL pointer dereference

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In case dev_alloc_skb fails, the fix returns -ENOMEM to avoid
NULL pointer dereference.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Kangjie Lu 2019-03-12 00:31:07 -05:00 committed by Kalle Valo
parent 6603c5844a
commit e5b9b206f3
1 changed files with 6 additions and 0 deletions
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6
drivers/net/wireless/marvell/mwifiex/cmdevt.c
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@ -341,6 +341,12 @@ static int mwifiex_dnld_sleep_confirm_cmd(struct mwifiex_adapter *adapter)
sleep_cfm_tmp =
dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm)
+ MWIFIEX_TYPE_LEN);
if (!sleep_cfm_tmp) {
mwifiex_dbg(adapter, ERROR,
"SLEEP_CFM: dev_alloc_skb failed\n");
return -ENOMEM;
}
skb_put(sleep_cfm_tmp, sizeof(struct mwifiex_opt_sleep_confirm)
+ MWIFIEX_TYPE_LEN);
put_unaligned_le32(MWIFIEX_USB_TYPE_CMD, sleep_cfm_tmp->data);