From 453c642ae1fb71de220b25b6289d58a4730038a1 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Thu, 21 May 2015 16:19:54 +0800 Subject: [PATCH 8/8] 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 08279b68375a..b907271d68e1 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -660,7 +660,7 @@ retry: 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); } } -- 2.13.0