cciss: fix memory leak
authorJesper Juhl <jesper.juhl@gmail.com>
Tue, 31 Jul 2007 07:39:39 +0000 (00:39 -0700)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Tue, 31 Jul 2007 22:39:43 +0000 (15:39 -0700)
There's a memory leak in the cciss driver.

in alloc_cciss_hba() we may leak sizeof(ctlr_info_t) bytes if a
call to alloc_disk(1 << NWD_SHIFT) fails.
This patch should fix the issue.

Spotted by the Coverity checker.

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Acked-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/block/cciss.c

index 1be82d544dc3866d15f8819e3f1b2a5859152531..a11b2bd54bbe6ca76e626a1bb50cdd2253d39a6d 100644 (file)
@@ -3227,12 +3227,15 @@ static int alloc_cciss_hba(void)
        for (i = 0; i < MAX_CTLR; i++) {
                if (!hba[i]) {
                        ctlr_info_t *p;
+
                        p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL);
                        if (!p)
                                goto Enomem;
                        p->gendisk[0] = alloc_disk(1 << NWD_SHIFT);
-                       if (!p->gendisk[0])
+                       if (!p->gendisk[0]) {
+                               kfree(p);
                                goto Enomem;
+                       }
                        hba[i] = p;
                        return i;
                }