From: Wen Gong <quic_wgong@xxxxxxxxxxx>
[ Upstream commit e3fb3d4418fce5484dfe7995fcd94c18b10a431a ]
In function ath10k_wow_convert_8023_to_80211(), it will do memcpy for
the new->pattern, and currently the new->pattern and new->mask is same
with the old, then the memcpy of new->pattern will also overwrite the
old->pattern, because the header format of new->pattern is 802.11,
its length is larger than the old->pattern which is 802.3. Then the
operation of "Copy frame body" will copy a mistake value because the
body memory has been overwrite when memcpy the new->pattern.
Assign another empty value to new_pattern to avoid the overwrite issue.
Tested-on: QCA6174 hw3.2 SDIO WLAN.RMH.4.4.1-00049
Fixes: fa3440fa2fa1 ("ath10k: convert wow pattern from 802.3 to 802.11")
Signed-off-by: Wen Gong <quic_wgong@xxxxxxxxxxx>
Signed-off-by: Kalle Valo <quic_kvalo@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20211222031347.25463-1-quic_wgong@xxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/wireless/ath/ath10k/wow.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/ath/ath10k/wow.c b/drivers/net/wireless/ath/ath10k/wow.c
index a6b179f88d36..1d44227d107d 100644
--- a/drivers/net/wireless/ath/ath10k/wow.c
+++ b/drivers/net/wireless/ath/ath10k/wow.c
@@ -235,14 +235,15 @@ static int ath10k_vif_wow_set_wakeups(struct ath10k_vif *arvif,
if (patterns[i].mask[j / 8] & BIT(j % 8))
bitmask[j] = 0xff;
old_pattern.mask = bitmask;
- new_pattern = old_pattern;
if (ar->wmi.rx_decap_mode == ATH10K_HW_TXRX_NATIVE_WIFI) {
- if (patterns[i].pkt_offset < ETH_HLEN)
+ if (patterns[i].pkt_offset < ETH_HLEN) {
ath10k_wow_convert_8023_to_80211(&new_pattern,
&old_pattern);
- else
+ } else {
+ new_pattern = old_pattern;
new_pattern.pkt_offset += WOW_HDR_LEN - ETH_HLEN;
+ }
}
if (WARN_ON(new_pattern.pattern_len > WOW_MAX_PATTERN_SIZE))
--
2.34.1
