Merge tag 'v4.7-rc2' into v4l_for_linus

Linux 4.7-rc2

* tag 'v4.7-rc2': (10914 commits)
  Linux 4.7-rc2
  devpts: Make each mount of devpts an independent filesystem.
  parisc: Move die_if_kernel() prototype into traps.h header
  parisc: Fix pagefault crash in unaligned __get_user() call
  parisc: Fix printk time during boot
  parisc: Fix backtrace on PA-RISC
  mm, page_alloc: recalculate the preferred zoneref if the context can ignore memory policies
  mm, page_alloc: reset zonelist iterator after resetting fair zone allocation policy
  mm, oom_reaper: do not use siglock in try_oom_reaper()
  mm, page_alloc: prevent infinite loop in buffered_rmqueue()
  checkpatch: reduce git commit description style false positives
  mm/z3fold.c: avoid modifying HEADLESS page and minor cleanup
  memcg: add RCU locking around css_for_each_descendant_pre() in memcg_offline_kmem()
  mm: check the return value of lookup_page_ext for all call sites
  kdump: fix dmesg gdbmacro to work with record based printk
  mm: fix overflow in vm_map_ram()
  Btrfs: deal with duplciates during extent_map insertion in btrfs_get_extent
  arm64: fix alignment when RANDOMIZE_TEXT_OFFSET is enabled
  arm64: move {PAGE,CONT}_SHIFT into Kconfig
  arm64: mm: dump: log span level
  ...

1 files changed, 31 insertions, 5 deletions

diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index b86883ae..c727fb0c 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -35,6 +35,10 @@
 
 #include "internal.h"
 
+static bool notests;
+module_param(notests, bool, 0644);
+MODULE_PARM_DESC(notests, "disable crypto self-tests");
+
 #ifdef CONFIG_CRYPTO_MANAGER_DISABLE_TESTS
 
 /* a perfect nop */
@@ -1776,6 +1780,7 @@ static int alg_test_drbg(const struct alg_test_desc *desc, const char *driver,
 static int do_test_rsa(struct crypto_akcipher *tfm,
 		       struct akcipher_testvec *vecs)
 {
+	char *xbuf[XBUFSIZE];
 	struct akcipher_request *req;
 	void *outbuf_enc = NULL;
 	void *outbuf_dec = NULL;
@@ -1784,9 +1789,12 @@ static int do_test_rsa(struct crypto_akcipher *tfm,
 	int err = -ENOMEM;
 	struct scatterlist src, dst, src_tab[2];
 
+	if (testmgr_alloc_buf(xbuf))
+		return err;
+
 	req = akcipher_request_alloc(tfm, GFP_KERNEL);
 	if (!req)
-		return err;
+		goto free_xbuf;
 
 	init_completion(&result.completion);
 
@@ -1804,9 +1812,14 @@ static int do_test_rsa(struct crypto_akcipher *tfm,
 	if (!outbuf_enc)
 		goto free_req;
 
+	if (WARN_ON(vecs->m_size > PAGE_SIZE))
+		goto free_all;
+
+	memcpy(xbuf[0], vecs->m, vecs->m_size);
+
 	sg_init_table(src_tab, 2);
-	sg_set_buf(&src_tab[0], vecs->m, 8);
-	sg_set_buf(&src_tab[1], vecs->m + 8, vecs->m_size - 8);
+	sg_set_buf(&src_tab[0], xbuf[0], 8);
+	sg_set_buf(&src_tab[1], xbuf[0] + 8, vecs->m_size - 8);
 	sg_init_one(&dst, outbuf_enc, out_len_max);
 	akcipher_request_set_crypt(req, src_tab, &dst, vecs->m_size,
 				   out_len_max);
@@ -1825,7 +1838,7 @@ static int do_test_rsa(struct crypto_akcipher *tfm,
 		goto free_all;
 	}
 	/* verify that encrypted message is equal to expected */
-	if (memcmp(vecs->c, sg_virt(req->dst), vecs->c_size)) {
+	if (memcmp(vecs->c, outbuf_enc, vecs->c_size)) {
 		pr_err("alg: rsa: encrypt test failed. Invalid output\n");
 		err = -EINVAL;
 		goto free_all;
@@ -1840,7 +1853,13 @@ static int do_test_rsa(struct crypto_akcipher *tfm,
 		err = -ENOMEM;
 		goto free_all;
 	}
-	sg_init_one(&src, vecs->c, vecs->c_size);
+
+	if (WARN_ON(vecs->c_size > PAGE_SIZE))
+		goto free_all;
+
+	memcpy(xbuf[0], vecs->c, vecs->c_size);
+
+	sg_init_one(&src, xbuf[0], vecs->c_size);
 	sg_init_one(&dst, outbuf_dec, out_len_max);
 	init_completion(&result.completion);
 	akcipher_request_set_crypt(req, &src, &dst, vecs->c_size, out_len_max);
@@ -1867,6 +1886,8 @@ free_all:
 	kfree(outbuf_enc);
 free_req:
 	akcipher_request_free(req);
+free_xbuf:
+	testmgr_free_buf(xbuf);
 	return err;
 }
 
@@ -3868,6 +3889,11 @@ int alg_test(const char *driver, const char *alg, u32 type, u32 mask)
 	int j;
 	int rc;
 
+	if (!fips_enabled && notests) {
+		printk_once(KERN_INFO "alg: self-tests disabled\n");
+		return 0;
+	}
+
 	alg_test_descs_check_order();
 
 	if ((type & CRYPTO_ALG_TYPE_MASK) == CRYPTO_ALG_TYPE_CIPHER) {