linux-kernel - [PATCH 4.19 067/234] random: de-duplicate INPUT

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20220623164344.957705512@linuxfoundation.org>
Date:   Thu, 23 Jun 2022 18:42:14 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Dominik Brodowski <linux@...inikbrodowski.net>,
        "Jason A. Donenfeld" <Jason@...c4.com>
Subject: [PATCH 4.19 067/234] random: de-duplicate INPUT_POOL constants

From: "Jason A. Donenfeld" <Jason@...c4.com>

commit 5b87adf30f1464477169a1d653e9baf8c012bbfe upstream.

We already had the POOL_* constants, so deduplicate the older INPUT_POOL
ones. As well, fold EXTRACT_SIZE into the poolinfo enum, since it's
related.

Reviewed-by: Dominik Brodowski <linux@...inikbrodowski.net>
Signed-off-by: Jason A. Donenfeld <Jason@...c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/char/random.c |   17 ++++++-----------
 1 file changed, 6 insertions(+), 11 deletions(-)

--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -359,13 +359,6 @@
 /* #define ADD_INTERRUPT_BENCH */
 
 /*
- * Configuration information
- */
-#define INPUT_POOL_SHIFT	12
-#define INPUT_POOL_WORDS	(1 << (INPUT_POOL_SHIFT-5))
-#define EXTRACT_SIZE		(BLAKE2S_HASH_SIZE / 2)
-
-/*
  * To allow fractional bits to be tracked, the entropy_count field is
  * denominated in units of 1/8th bits.
  *
@@ -440,7 +433,9 @@ enum poolinfo {
 	POOL_TAP2 = 76,
 	POOL_TAP3 = 51,
 	POOL_TAP4 = 25,
-	POOL_TAP5 = 1
+	POOL_TAP5 = 1,
+
+	EXTRACT_SIZE = BLAKE2S_HASH_SIZE / 2
 };
 
 /*
@@ -503,7 +498,7 @@ MODULE_PARM_DESC(ratelimit_disable, "Dis
  *
  **********************************************************************/
 
-static u32 input_pool_data[INPUT_POOL_WORDS] __latent_entropy;
+static u32 input_pool_data[POOL_WORDS] __latent_entropy;
 
 static struct {
 	/* read-only data: */
@@ -1959,7 +1954,7 @@ SYSCALL_DEFINE3(getrandom, char __user *
 #include <linux/sysctl.h>
 
 static int min_write_thresh;
-static int max_write_thresh = INPUT_POOL_WORDS * 32;
+static int max_write_thresh = POOL_BITS;
 static int random_min_urandom_seed = 60;
 static char sysctl_bootid[16];
 
@@ -2016,7 +2011,7 @@ static int proc_do_entropy(struct ctl_ta
 	return proc_dointvec(&fake_table, write, buffer, lenp, ppos);
 }
 
-static int sysctl_poolsize = INPUT_POOL_WORDS * 32;
+static int sysctl_poolsize = POOL_BITS;
 extern struct ctl_table random_table[];
 struct ctl_table random_table[] = {
 	{