X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=fs%2Fsplice.c;h=14e2262c0a046641ece8086c7f7329a8a114ebda;hb=8811930dc74a503415b35c4a79d14fb0b408a361;hp=4ee49e86edde5a2272781b6e49e0371b721ceb33;hpb=66191dc622f5ff0a541524c4e96fdacfacfda206;p=linux-2.6-omap-h63xx.git

diff --git a/fs/splice.c b/fs/splice.c
index 4ee49e86edd..14e2262c0a0 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -1179,6 +1179,9 @@ static int copy_from_user_mmap_sem(void *dst, const void __user *src, size_t n)
 {
 	int partial;
 
+	if (!access_ok(VERIFY_READ, src, n))
+		return -EFAULT;
+
 	pagefault_disable();
 	partial = __copy_from_user_inatomic(dst, src, n);
 	pagefault_enable();
@@ -1387,6 +1390,11 @@ static long vmsplice_to_user(struct file *file, const struct iovec __user *iov,
 			break;
 		}
 
+		if (unlikely(!access_ok(VERIFY_WRITE, base, len))) {
+			error = -EFAULT;
+			break;
+		}
+
 		sd.len = 0;
 		sd.total_len = len;
 		sd.flags = flags;