UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

ath10k: make sure to not use invalid beacon pointer 

If DMA mapping of next beacon failed it was
possible for next SWBA to access a pointer that
was already unmapped and freed. This could cause
memory corruption.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Michal Kazior 2014-04-23 19:30:05 +03:00 committed by Kalle Valo
parent ec6bc5523b
commit 2ab03a6b96
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/wireless/ath/ath10k/wmi.c
View File

@ -1431,6 +1431,7 @@ static void ath10k_wmi_event_host_swba(struct ath10k *ar, struct sk_buff *skb)
ATH10K_SKB_CB(arvif->beacon)->paddr,
arvif->beacon->len, DMA_TO_DEVICE);
dev_kfree_skb_any(arvif->beacon);
arvif->beacon = NULL;
}
ATH10K_SKB_CB(bcn)->paddr = dma_map_single(arvif->ar->dev,