From 1d9de44e268d880cbe2d0bd3be1ef0661f93fd34 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Thu, 21 May 2015 16:19:54 +0800 Subject: [PATCH] random: Wake up all getrandom(2) callers when pool is ready If more than one application invokes getrandom(2) before the pool is ready, then all bar one will be stuck forever because we use wake_up_interruptible which wakes up a single task. This patch replaces it with wake_up_all. Signed-off-by: Herbert Xu --- 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 9cd6968e2f92..8b8c46b5fd5c 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -660,7 +660,7 @@ static void credit_entropy_bits(struct entropy_store *r, int nbits) r->entropy_total = 0; if (r == &nonblocking_pool) { prandom_reseed_late(); - wake_up_interruptible(&urandom_init_wait); + wake_up_all(&urandom_init_wait); pr_notice("random: %s pool is initialized\n", r->name); } } -- GitLab