[PATCH] random: fix the RNDRESEEDCRNG ioctl

[Eric Biggers]

From: Eric Biggers <ebigg...@google.com>

The RNDRESEEDCRNG ioctl reseeds the primary_crng from itself, which
doesn't make sense.  Reseed it from the input_pool instead.

Fixes: d848e5f8e1eb ("random: add new ioctl RNDRESEEDCRNG")
Cc: sta...@vger.kernel.org
Signed-off-by: Eric Biggers <ebigg...@google.com>
---
 drivers/char/random.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/char/random.c b/drivers/char/random.c
index d20ba1b104ca3..a8b9e66f41435 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -1973,7 +1973,7 @@ static long random_ioctl(struct file *f, unsigned int 
cmd, unsigned long arg)
                        return -EPERM;
                if (crng_init < 2)
                        return -ENODATA;
-               crng_reseed(&primary_crng, NULL);
+               crng_reseed(&primary_crng, &input_pool);
                crng_global_init_time = jiffies - 1;
                return 0;
        default:
-- 
2.28.0