[PATCH] random: Check kmalloc return value and give the failed message

[Steven Liu]

Hi, Matt Mackall,

Check kmalloc return value and give the failed message

Signed-off-by: Liu Qi <lingjiujianke@xxxxxxxxx>
---
 drivers/char/random.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/drivers/char/random.c b/drivers/char/random.c
index 2fd3d39..d1bedeb 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -952,8 +952,11 @@ static void init_std_data(struct entropy_store *r)
    mix_pool_bytes(r, &now, sizeof(now));
    mix_pool_bytes(r, utsname(), sizeof(*(utsname())));
    /* Enable continuous test in fips mode */
-   if (fips_enabled)
+   if (fips_enabled){
        r->last_data = kmalloc(EXTRACT_SIZE, GFP_KERNEL);
+       if(r->last_data == NULL)
+           printk(KERN_ERR "kmalloc memory failed in %s \n", __func__);
+   }
 }

 static int rand_initialize(void)
--
1.7.1



Best regards
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