On Mon, 23 Apr 2018, Sebastian Ott wrote:
> From 9d29e0c92efaf94277bc178782523283958ae8c8 Mon Sep 17 00:00:00 2001
> From: Sebastian Ott <seb...@linux.ibm.com>
> Date: Mon, 23 Apr 2018 14:59:20 +0200
> Subject: [PATCH] random: don't sleep during allocations in irq context
>
> Since numa_crng_init() can be called from irq context let's
> use __GFP_ATOMIC for allocations.
>
> Fixes: 8ef35c866f88 ("random: set up the NUMA crng instances...")
> Signed-off-by: Sebastian Ott <seb...@linux.ibm.com>
> ---
> drivers/char/random.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/char/random.c b/drivers/char/random.c
> index 3cd3aae24d6d..e96ea2bf7241 100644
> --- a/drivers/char/random.c
> +++ b/drivers/char/random.c
> @@ -791,14 +791,14 @@ static void crng_initialize(struct crng_state *crng)
> #ifdef CONFIG_NUMA
> static void numa_crng_init(void)
> {
> + gfp_t gfp_flags = GFP_KERNEL | __GFP_NOFAIL | __GFP_ATOMIC;
I should have removed GFP_KERNEL here...
