From: Christophe JAILLET <christophe.jail...@wanadoo.fr>
[ Upstream commit d2ab7f00f4321370a8ee14e5630d4349fdacc42e ]
A possible call chain is as follow:
mwifiex_sdio_interrupt (sdio.c)
--> mwifiex_main_process (main.c)
--> mwifiex_process_cmdresp (cmdevt.c)
--> mwifiex_process_sta_cmdresp (sta_cmdresp.c)
--> mwifiex_ret_802_11_scan (scan.c)
--> mwifiex_parse_single_response_buf (scan.c)
'mwifiex_sdio_interrupt()' is an interrupt function.
Also note that 'mwifiex_ret_802_11_scan()' already uses GFP_ATOMIC.
So use GFP_ATOMIC instead of GFP_KERNEL when memory is allocated in
'mwifiex_parse_single_response_buf()'.
Fixes: 7c6fa2a843c5 ("mwifiex: use cfg80211 dynamic scan table and
cfg80211_get_bss API")
or
Fixes: 601216e12c65e ("mwifiex: process RX packets in SDIO IRQ thread directly")
Signed-off-by: Christophe JAILLET <christophe.jail...@wanadoo.fr>
Signed-off-by: Kalle Valo <kv...@codeaurora.org>
Link:
https://lore.kernel.org/r/20200809092906.744621-1-christophe.jail...@wanadoo.fr
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
drivers/net/wireless/mwifiex/scan.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/mwifiex/scan.c
b/drivers/net/wireless/mwifiex/scan.c
index e7c8972431d34..e54dd4b7face6 100644
--- a/drivers/net/wireless/mwifiex/scan.c
+++ b/drivers/net/wireless/mwifiex/scan.c
@@ -1862,7 +1862,7 @@ mwifiex_parse_single_response_buf(struct mwifiex_private
*priv, u8 **bss_info,
chan, CFG80211_BSS_FTYPE_UNKNOWN,
bssid, timestamp,
cap_info_bitmap, beacon_period,
- ie_buf, ie_len, rssi, GFP_KERNEL);
+ ie_buf, ie_len, rssi, GFP_ATOMIC);
if (bss) {
bss_priv = (struct mwifiex_bss_priv *)bss->priv;
bss_priv->band = band;
--
2.25.1
