From 84cad97a717f5749a0236abd5ce68da582ea074f Mon Sep 17 00:00:00 2001 From: Larry Finger Date: Wed, 2 Jan 2019 20:12:46 -0600 Subject: staging: rtl8188eu: Fix module loading from tasklet for CCMP encryption Commit 6bd082af7e36 ("staging:r8188eu: use lib80211 CCMP decrypt") causes scheduling while atomic bugs followed by a hard freeze whenever the driver tries to connect to a CCMP-encrypted network. Experimentation showed that the freezes were eliminated when module lib80211 was preloaded, which can be forced by calling lib80211_get_crypto_ops() directly rather than indirectly through try_then_request_module(). With this change, no BUG messages are logged. Fixes: 6bd082af7e36 ("staging:r8188eu: use lib80211 CCMP decrypt") Cc: Stable # v4.17+ Reported-and-tested-by: Michael Straube Cc: Ivan Safonov Signed-off-by: Larry Finger Signed-off-by: Greg Kroah-Hartman --- drivers/staging/rtl8188eu/core/rtw_security.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/staging') diff --git a/drivers/staging/rtl8188eu/core/rtw_security.c b/drivers/staging/rtl8188eu/core/rtw_security.c index 364d6ea14bf8..dbb84e00077f 100644 --- a/drivers/staging/rtl8188eu/core/rtw_security.c +++ b/drivers/staging/rtl8188eu/core/rtw_security.c @@ -1291,7 +1291,7 @@ u32 rtw_aes_decrypt(struct adapter *padapter, u8 *precvframe) struct sk_buff *skb = ((struct recv_frame *)precvframe)->pkt; void *crypto_private = NULL; u8 *key, *pframe = skb->data; - struct lib80211_crypto_ops *crypto_ops = try_then_request_module(lib80211_get_crypto_ops("CCMP"), "lib80211_crypt_ccmp"); + struct lib80211_crypto_ops *crypto_ops = lib80211_get_crypto_ops("CCMP"); struct security_priv *psecuritypriv = &padapter->securitypriv; char iv[8], icv[8]; -- cgit v1.2.3