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| author | Larry Finger <Larry.Finger@lwfinger.net> | 2019-01-02 20:12:46 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-07 15:27:59 +0100 |
| commit | 84cad97a717f5749a0236abd5ce68da582ea074f (patch) | |
| tree | 6cad8b880721d3bf44e7e5702c6b02debc2f7c80 | |
| parent | 605c0351fa36e857e29d34ebab2719d9c04e95f6 (diff) | |
| download | linux-0-day-84cad97a717f5749a0236abd5ce68da582ea074f.tar.gz linux-0-day-84cad97a717f5749a0236abd5ce68da582ea074f.tar.xz | |
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 <stable@vger.kernel.org> # v4.17+
Reported-and-tested-by: Michael Straube <straube.linux@gmail.com>
Cc: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/rtl8188eu/core/rtw_security.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/staging/rtl8188eu/core/rtw_security.c b/drivers/staging/rtl8188eu/core/rtw_security.c index 364d6ea14bf81..dbb84e00077f4 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]; |