X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=drivers%2Fmisc%2Flkdtm.c;h=08aad69c8da4e3f4d8572d52eadd46c00bb65941;hb=41494cbaeaed07a43e111b323d6da5e1d8dd7936;hp=28adefe70f96274c93198ee50acc9ee65adec1ae;hpb=9f9d2760da8c7f94fae119fac3e13d5a1702f8f0;p=firefly-linux-kernel-4.4.55.git

diff --git a/drivers/misc/lkdtm.c b/drivers/misc/lkdtm.c
index 28adefe70f96..08aad69c8da4 100644
--- a/drivers/misc/lkdtm.c
+++ b/drivers/misc/lkdtm.c
@@ -477,6 +477,8 @@ static ssize_t lkdtm_debugfs_read(struct file *f, char __user *user_buf,
 	int i, n, out;
 
 	buf = (char *)__get_free_page(GFP_KERNEL);
+	if (buf == NULL)
+		return -ENOMEM;
 
 	n = snprintf(buf, PAGE_SIZE, "Available crash types:\n");
 	for (i = 0; i < ARRAY_SIZE(cp_type); i++)