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rtw88: assign NULL to skb after being kfree()'ed

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Should assign NULL to skb after kfree(), in case of driver
trying to free the same skb again.

This could happen if driver failed to allocate an skb when
building reserved page.

Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Yan-Hsuan Chuang 2019-12-20 17:21:55 +08:00 committed by Kalle Valo
parent fc83c616d4
commit f48abf064a
1 changed files with 4 additions and 1 deletions
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5
drivers/net/wireless/realtek/rtw88/fw.c
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@ -1139,13 +1139,16 @@ static u8 *rtw_build_rsvd_page(struct rtw_dev *rtwdev,
page += rtw_len_to_page(rsvd_pkt->skb->len, page_size);
kfree_skb(rsvd_pkt->skb);
rsvd_pkt->skb = NULL;
}
return buf;
release_skb:
list_for_each_entry(rsvd_pkt, &rtwdev->rsvd_page_list, list)
list_for_each_entry(rsvd_pkt, &rtwdev->rsvd_page_list, list) {
kfree_skb(rsvd_pkt->skb);
rsvd_pkt->skb = NULL;
}
return NULL;
}