4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Theodore Ts'o <tytso@xxxxxxx>
commit 0bb29a849a6433b72e249eea7695477b02056e94 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/char/random.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -862,7 +862,7 @@ static void crng_reseed(struct crng_stat
_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) &&
@@ -879,7 +879,7 @@ static void crng_reseed(struct crng_stat
wake_up_interruptible(&crng_init_wait);
pr_notice("random: crng init done\n");
}
- spin_unlock_irqrestore(&primary_crng.lock, flags);
+ spin_unlock_irqrestore(&crng->lock, flags);
}
static inline void maybe_reseed_primary_crng(void)