[patch 3/6] drivers/scsi/aacraid/commctrl.c: fix mem leak in aac_send_raw_srb()

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From: Jesper Juhl <jj@xxxxxxxxxxxxx>
Subject: drivers/scsi/aacraid/commctrl.c: fix mem leak in aac_send_raw_srb()

We leak in drivers/scsi/aacraid/commctrl.c::aac_send_raw_srb() :

We allocate memory:
        ...
                        struct user_sgmap* usg;
                        usg = kmalloc(actual_fibsize - sizeof(struct aac_srb)
                          + sizeof(struct sgmap), GFP_KERNEL);
and then neglect to free it:
        ...
                        for (i = 0; i < usg->count; i++) {
                                u64 addr;
                                void* p;
                                if (usg->sg[i].count >
                                    ((dev->adapter_info.options &
                                     AAC_OPT_NEW_COMM) ?
                                      (dev->scsi_host_ptr->max_sectors << 9) :
                                      65536)) {
                                        rcode = -EINVAL;
                                        goto cleanup;
        ... this 'goto' makes 'usg' go out of scope and leak the memory we
            allocated.
            Other exits properly kfree(usg), it's just here it is neglected.

Signed-off-by: Jesper Juhl <jj@xxxxxxxxxxxxx>
Cc: James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 drivers/scsi/aacraid/commctrl.c |    1 +
 1 file changed, 1 insertion(+)

diff -puN drivers/scsi/aacraid/commctrl.c~drivers-scsi-aacraid-commctrlc-fix-mem-leak-in-aac_send_raw_srb drivers/scsi/aacraid/commctrl.c
--- a/drivers/scsi/aacraid/commctrl.c~drivers-scsi-aacraid-commctrlc-fix-mem-leak-in-aac_send_raw_srb
+++ a/drivers/scsi/aacraid/commctrl.c
@@ -650,6 +650,7 @@ static int aac_send_raw_srb(struct aac_d
 				     AAC_OPT_NEW_COMM) ?
 				      (dev->scsi_host_ptr->max_sectors << 9) :
 				      65536)) {
+					kfree(usg);
 					rcode = -EINVAL;
 					goto cleanup;
 				}
_
--
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