Merge tag 'v4.9-rc5' into patchwork

Linux 4.9-rc5

* tag 'v4.9-rc5': (1102 commits)
  Linux 4.9-rc5
  gp8psk: Fix DVB frontend attach
  gp8psk: fix gp8psk_usb_in_op() logic
  dvb-usb: move data_mutex to struct dvb_usb_device
  iio: maxim_thermocouple: detect invalid storage size in read()
  aoe: fix crash in page count manipulation
  lightnvm: invalid offset calculation for lba_shift
  Kbuild: enable -Wmaybe-uninitialized warnings by default
  pcmcia: fix return value of soc_pcmcia_regulator_set
  infiniband: shut up a maybe-uninitialized warning
  crypto: aesni: shut up -Wmaybe-uninitialized warning
  rc: print correct variable for z8f0811
  dib0700: fix nec repeat handling
  s390: pci: don't print uninitialized data for debugging
  nios2: fix timer initcall return value
  x86: apm: avoid uninitialized data
  NFSv4.1: work around -Wmaybe-uninitialized warning
  Kbuild: enable -Wmaybe-uninitialized warning for "make W=1"
  lib/stackdepot: export save/fetch stack for drivers
  mm: kmemleak: scan .data.ro_after_init
  ...

1 files changed, 30 insertions, 16 deletions

diff --git a/net/mac80211/aes_ccm.c b/net/mac80211/aes_ccm.c
index 7663c28ba353..a4e0d59a40dd 100644
--- a/net/mac80211/aes_ccm.c
+++ b/net/mac80211/aes_ccm.c
@@ -18,21 +18,24 @@
 #include "key.h"
 #include "aes_ccm.h"
 
-void ieee80211_aes_ccm_encrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad,
-			       u8 *data, size_t data_len, u8 *mic,
-			       size_t mic_len)
+int ieee80211_aes_ccm_encrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad,
+			      u8 *data, size_t data_len, u8 *mic,
+			      size_t mic_len)
 {
 	struct scatterlist sg[3];
+	struct aead_request *aead_req;
+	int reqsize = sizeof(*aead_req) + crypto_aead_reqsize(tfm);
+	u8 *__aad;
 
-	char aead_req_data[sizeof(struct aead_request) +
-			   crypto_aead_reqsize(tfm)]
-		__aligned(__alignof__(struct aead_request));
-	struct aead_request *aead_req = (void *) aead_req_data;
+	aead_req = kzalloc(reqsize + CCM_AAD_LEN, GFP_ATOMIC);
+	if (!aead_req)
+		return -ENOMEM;
 
-	memset(aead_req, 0, sizeof(aead_req_data));
+	__aad = (u8 *)aead_req + reqsize;
+	memcpy(__aad, aad, CCM_AAD_LEN);
 
 	sg_init_table(sg, 3);
-	sg_set_buf(&sg[0], &aad[2], be16_to_cpup((__be16 *)aad));
+	sg_set_buf(&sg[0], &__aad[2], be16_to_cpup((__be16 *)__aad));
 	sg_set_buf(&sg[1], data, data_len);
 	sg_set_buf(&sg[2], mic, mic_len);
 
@@ -41,6 +44,9 @@ void ieee80211_aes_ccm_encrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad,
 	aead_request_set_ad(aead_req, sg[0].length);
 
 	crypto_aead_encrypt(aead_req);
+	kzfree(aead_req);
+
+	return 0;
 }
 
 int ieee80211_aes_ccm_decrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad,
@@ -48,18 +54,23 @@ int ieee80211_aes_ccm_decrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad,
 			      size_t mic_len)
 {
 	struct scatterlist sg[3];
-	char aead_req_data[sizeof(struct aead_request) +
-			   crypto_aead_reqsize(tfm)]
-		__aligned(__alignof__(struct aead_request));
-	struct aead_request *aead_req = (void *) aead_req_data;
+	struct aead_request *aead_req;
+	int reqsize = sizeof(*aead_req) + crypto_aead_reqsize(tfm);
+	u8 *__aad;
+	int err;
 
 	if (data_len == 0)
 		return -EINVAL;
 
-	memset(aead_req, 0, sizeof(aead_req_data));
+	aead_req = kzalloc(reqsize + CCM_AAD_LEN, GFP_ATOMIC);
+	if (!aead_req)
+		return -ENOMEM;
+
+	__aad = (u8 *)aead_req + reqsize;
+	memcpy(__aad, aad, CCM_AAD_LEN);
 
 	sg_init_table(sg, 3);
-	sg_set_buf(&sg[0], &aad[2], be16_to_cpup((__be16 *)aad));
+	sg_set_buf(&sg[0], &__aad[2], be16_to_cpup((__be16 *)__aad));
 	sg_set_buf(&sg[1], data, data_len);
 	sg_set_buf(&sg[2], mic, mic_len);
 
@@ -67,7 +78,10 @@ int ieee80211_aes_ccm_decrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad,
 	aead_request_set_crypt(aead_req, sg, sg, data_len + mic_len, b_0);
 	aead_request_set_ad(aead_req, sg[0].length);
 
-	return crypto_aead_decrypt(aead_req);
+	err = crypto_aead_decrypt(aead_req);
+	kzfree(aead_req);
+
+	return err;
 }
 
 struct crypto_aead *ieee80211_aes_key_setup_encrypt(const u8 key[],