From 4d56e2fa3339828c89f640a9a6ffeb7a538c6448 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Thu, 21 May 2015 16:19:54 +0800 Subject: [PATCH 5/5] 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 a3150a06dbba..27eafd7e01f9 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); } } -- 2.12.2