diff options
| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2020-08-09 11:29:06 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-29 09:03:03 +0100 |
| commit | acaf6a96220d777b64a2811eb043ceecbb110fb2 (patch) | |
| tree | 6f83114083d2067aced288f384a9801d4e238c7d /drivers/net/wireless | |
| parent | 00cc1e83b923fbc2c046533bfbc7b08feabd009f (diff) | |
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@wanadoo.fr>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200809092906.744621-1-christophe.jaillet@wanadoo.fr
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/net/wireless')
| -rw-r--r-- | drivers/net/wireless/mwifiex/scan.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wireless/mwifiex/scan.c b/drivers/net/wireless/mwifiex/scan.c index e7c8972431d3..e54dd4b7face 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; |