Reported-by: Jann Horn <jannh@xxxxxxxxxx>
Fixes: 1e7f583af67b ("random: make /dev/urandom scalable for silly...")
Cc: stable@xxxxxxxxxx # 4.8+
Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
Reviewed-by: Jann Horn <jannh@xxxxxxxxxx>
---
drivers/char/random.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 681ee0c0de24..6e7fa13b1a89 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -906,7 +906,7 @@ static void crng_reseed(struct crng_state *crng, struct entropy_store *r)
_crng_backtrack_protect(&primary_crng, buf.block,
CHACHA20_KEY_SIZE);
}
- spin_lock_irqsave(&primary_crng.lock, flags);
+ spin_lock_irqsave(&crng->lock, flags);
for (i = 0; i < 8; i++) {
unsigned long rv;
if (!arch_get_random_seed_long(&rv) &&
@@ -916,7 +916,7 @@ static void crng_reseed(struct crng_state *crng, struct entropy_store *r)
}
memzero_explicit(&buf, sizeof(buf));
crng->init_time = jiffies;
- spin_unlock_irqrestore(&primary_crng.lock, flags);
+ spin_unlock_irqrestore(&crng->lock, flags);
if (crng == &primary_crng && crng_init < 2) {
invalidate_batched_entropy();
numa_crng_init();
--
2.16.1.72.g5be1f00a9a
