Patch "random: properly align get_random_int_hash" has been added to the 3.14-stable tree
From: <gregkh@linuxfoundation.org>
Date: 2016-08-18 09:36:57
This is a note to let you know that I've just added the patch titled
random: properly align get_random_int_hash
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
random-properly-align-get_random_int_hash.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let [off-list ref] know about it.
From b1132deac01c2332d234fa821a70022796b79182 Mon Sep 17 00:00:00 2001
From: Eric Biggers <redacted> Date: Wed, 4 May 2016 21:08:39 -0400 Subject: random: properly align get_random_int_hash From: Eric Biggers <redacted> commit b1132deac01c2332d234fa821a70022796b79182 upstream. get_random_long() reads from the get_random_int_hash array using an unsigned long pointer. For this code to be guaranteed correct on all architectures, the array must be aligned to an unsigned long boundary. Signed-off-by: Eric Biggers <redacted> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/char/random.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/char/random.c
+++ b/drivers/char/random.c@@ -1632,13 +1632,15 @@ int random_int_secret_init(void) return 0; } +static DEFINE_PER_CPU(__u32 [MD5_DIGEST_WORDS], get_random_int_hash) + __aligned(sizeof(unsigned long)); + /* * Get a random word for internal kernel use only. Similar to urandom but * with the goal of minimal entropy pool depletion. As a result, the random * value is not cryptographically secure but for several uses the cost of * depleting entropy is too high */ -static DEFINE_PER_CPU(__u32 [MD5_DIGEST_WORDS], get_random_int_hash); unsigned int get_random_int(void) { __u32 *hash;
Patches currently in stable-queue which might be from ebiggers3@gmail.com are queue-3.14/random-properly-align-get_random_int_hash.patch