[PATCH] ftl.c - Null ptr fixes 2.4.4

[Praveen Srinivasan]

Hi,
Using the Stanford checker, we searched for null-pointer bugs in the linux
kernel code. This patch fixes an unchecked pointer in an MTD driver (ftl.c).

Praveen Srinivasan and Frederick Akalin

--- ../linux/./drivers/mtd/ftl.c	Fri Feb  9 11:30:23 2001
+++ ./drivers/mtd/ftl.c	Mon May  7 22:01:29 2001
@@ -375,6 +375,11 @@
     /* Set up virtual page map */
     blocks = le32_to_cpu(header.FormattedSize) >> header.BlockSize;
     part->VirtualBlockMap = vmalloc(blocks * sizeof(u_int32_t));
+
+    if(part->VirtualBlockMap==NULL) {
+      return -1;
+    }
+
     memset(part->VirtualBlockMap, 0xff, blocks * sizeof(u_int32_t));
     part->BlocksPerUnit = (1 << header.EraseUnitSize) >> header.BlockSize;