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Subject[PATCH 3.8 02/81] random: run random_int_secret_init() run after all late_initcalls
Date
3.8.13.12 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Theodore Ts'o <tytso@mit.edu>

commit 47d06e532e95b71c0db3839ebdef3fe8812fca2c upstream.

The some platforms (e.g., ARM) initializes their clocks as
late_initcalls for some unknown reason. So make sure
random_int_secret_init() is run after all of the late_initcalls are
run.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
[ kamal: backport to 3.8 (context) ]
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/char/random.c | 3 +--
include/linux/random.h | 1 +
init/main.c | 2 ++
3 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/char/random.c b/drivers/char/random.c
index b7dc45c..5b0c1cd 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -1462,12 +1462,11 @@ ctl_table random_table[] = {

static u32 random_int_secret[MD5_MESSAGE_BYTES / 4] ____cacheline_aligned;

-static int __init random_int_secret_init(void)
+int random_int_secret_init(void)
{
get_random_bytes(random_int_secret, sizeof(random_int_secret));
return 0;
}
-late_initcall(random_int_secret_init);

/*
* Get a random word for internal kernel use only. Similar to urandom but
diff --git a/include/linux/random.h b/include/linux/random.h
index d984608..6069225 100644
--- a/include/linux/random.h
+++ b/include/linux/random.h
@@ -17,6 +17,7 @@ extern void add_interrupt_randomness(int irq, int irq_flags);
extern void get_random_bytes(void *buf, int nbytes);
extern void get_random_bytes_arch(void *buf, int nbytes);
void generate_random_uuid(unsigned char uuid_out[16]);
+extern int random_int_secret_init(void);

#ifndef MODULE
extern const struct file_operations random_fops, urandom_fops;
diff --git a/init/main.c b/init/main.c
index cee4b5c..c29292c 100644
--- a/init/main.c
+++ b/init/main.c
@@ -70,6 +70,7 @@
#include <linux/perf_event.h>
#include <linux/file.h>
#include <linux/ptrace.h>
+#include <linux/random.h>

#include <asm/io.h>
#include <asm/bugs.h>
@@ -784,6 +785,7 @@ static void __init do_basic_setup(void)
do_ctors();
usermodehelper_enable();
do_initcalls();
+ random_int_secret_init();
}

static void __init do_pre_smp_initcalls(void)
--
1.8.1.2


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