This is a note to let you know that I've just added the patch titled mwifiex: Do not use GFP_KERNEL in atomic context to the 5.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: mwifiex-do-not-use-gfp_kernel-in-atomic-context.patch and it can be found in the queue-5.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 7bf1f5740f3d05da9ffa41967a8c0959dfcb0d27 Author: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx> Date: Sun Aug 9 11:29:06 2020 +0200 mwifiex: Do not use GFP_KERNEL in atomic context [ 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.jaillet@xxxxxxxxxx> Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20200809092906.744621-1-christophe.jaillet@xxxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/net/wireless/marvell/mwifiex/scan.c b/drivers/net/wireless/marvell/mwifiex/scan.c index ff932627a46c1..2fb69a590bd8e 100644 --- a/drivers/net/wireless/marvell/mwifiex/scan.c +++ b/drivers/net/wireless/marvell/mwifiex/scan.c @@ -1889,7 +1889,7 @@ 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;