Re: [PATCH] rtl8192ce: avoid accessing the data mapped to streaming DMA

2020-11-17 Thread Jia-Ju Bai
On 2020/11/7 19:44, Kalle Valo wrote: Jia-Ju Bai wrote: In rtl92ce_tx_fill_cmddesc(), skb->data is mapped to streaming DMA on line 530: dma_addr_t mapping = dma_map_single(..., skb->data, ...); On line 533, skb->data is assigned to hdr after cast: struct ieee80211_hdr *hdr = (struct

Re: [PATCH] rtl8192ce: avoid accessing the data mapped to streaming DMA

2020-11-07 Thread Kalle Valo
Jia-Ju Bai wrote: > In rtl92ce_tx_fill_cmddesc(), skb->data is mapped to streaming DMA on > line 530: > dma_addr_t mapping = dma_map_single(..., skb->data, ...); > > On line 533, skb->data is assigned to hdr after cast: > struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data); > >

Re: [PATCH] rtl8192ce: avoid accessing the data mapped to streaming DMA

2020-10-28 Thread Pkshih
On Mon, 2020-10-19 at 11:09 +0800, Jia-Ju Bai wrote: > In rtl92ce_tx_fill_cmddesc(), skb->data is mapped to streaming DMA on > line 530: >   dma_addr_t mapping = dma_map_single(..., skb->data, ...); > > On line 533, skb->data is assigned to hdr after cast: >   struct ieee80211_hdr *hdr = (struct i

[PATCH] rtl8192ce: avoid accessing the data mapped to streaming DMA

2020-10-18 Thread Jia-Ju Bai
In rtl92ce_tx_fill_cmddesc(), skb->data is mapped to streaming DMA on line 530: dma_addr_t mapping = dma_map_single(..., skb->data, ...); On line 533, skb->data is assigned to hdr after cast: struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data); Then hdr->frame_control is accessed