Patch "random: properly align get_random_int_hash" has been added to the 3.14-stable tree
Subsystems (2)
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 <[email protected]> know about it.
Quoted 1 line
From
b1132deac01c2332d234fa821a70022796b79182Mon Sep 17 00:00:00 2001
From: Eric Biggers <[email protected]>
Date: Wed, 4 May 2016 21:08:39 -0400
Subject: random: properly align get_random_int_hash
From: Eric Biggers <[email protected]>
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.
--- drivers/char/random.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
drivers/char/random.c +3 -1
@@ -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 [email protected] are
queue-3.14/random-properly-align-get_random_int_hash.patch