This is a note to let you know that I've just added the patch titled
random: mark bootloader randomness code as __init
to the 5.18-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-mark-bootloader-randomness-code-as-__init.patch
and it can be found in the queue-5.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Mon Jun 13 11:00:46 AM CEST 2022
From: "Jason A. Donenfeld" <Jason@xxxxxxxxx>
Date: Mon, 13 Jun 2022 10:07:48 +0200
Subject: random: mark bootloader randomness code as __init
To: stable@xxxxxxxxxxxxxxx, gregkh@xxxxxxxxxxxxxxxxxxx
Message-ID: <20220613080749.153222-3-Jason@xxxxxxxxx>
From: "Jason A. Donenfeld" <Jason@xxxxxxxxx>
commit 39e0f991a62ed5efabd20711a7b6e7da92603170 upstream.
add_bootloader_randomness() and the variables it touches are only used
during __init and not after, so mark these as __init. At the same time,
unexport this, since it's only called by other __init code that's
built-in.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 428826f5358c ("fdt: add support for rng-seed")
Signed-off-by: Jason A. Donenfeld <Jason@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/char/random.c | 7 +++----
include/linux/random.h | 2 +-
2 files changed, 4 insertions(+), 5 deletions(-)
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -793,8 +793,8 @@ static void __cold _credit_init_bits(siz
*
**********************************************************************/
-static bool trust_cpu __ro_after_init = IS_ENABLED(CONFIG_RANDOM_TRUST_CPU);
-static bool trust_bootloader __ro_after_init = IS_ENABLED(CONFIG_RANDOM_TRUST_BOOTLOADER);
+static bool trust_cpu __initdata = IS_ENABLED(CONFIG_RANDOM_TRUST_CPU);
+static bool trust_bootloader __initdata = IS_ENABLED(CONFIG_RANDOM_TRUST_BOOTLOADER);
static int __init parse_trust_cpu(char *arg)
{
return kstrtobool(arg, &trust_cpu);
@@ -890,13 +890,12 @@ EXPORT_SYMBOL_GPL(add_hwgenerator_random
* Handle random seed passed by bootloader, and credit it if
* CONFIG_RANDOM_TRUST_BOOTLOADER is set.
*/
-void __cold add_bootloader_randomness(const void *buf, size_t len)
+void __init add_bootloader_randomness(const void *buf, size_t len)
{
mix_pool_bytes(buf, len);
if (trust_bootloader)
credit_init_bits(len * 8);
}
-EXPORT_SYMBOL_GPL(add_bootloader_randomness);
#if IS_ENABLED(CONFIG_VMGENID)
static BLOCKING_NOTIFIER_HEAD(vmfork_chain);
--- a/include/linux/random.h
+++ b/include/linux/random.h
@@ -13,7 +13,7 @@
struct notifier_block;
void add_device_randomness(const void *buf, size_t len);
-void add_bootloader_randomness(const void *buf, size_t len);
+void __init add_bootloader_randomness(const void *buf, size_t len);
void add_input_randomness(unsigned int type, unsigned int code,
unsigned int value) __latent_entropy;
void add_interrupt_randomness(int irq) __latent_entropy;
Patches currently in stable-queue which might be from Jason@xxxxxxxxx are
queue-5.18/random-mark-bootloader-randomness-code-as-__init.patch
queue-5.18/random-avoid-checking-crng_ready-twice-in-random_init.patch
queue-5.18/random-account-for-arch-randomness-in-bits.patch
