[PATCH] scsi: dpt_i2o: Use after free in I2ORESETCMD ioctl

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Here is another use after free if we reset the card.  The adpt_hba_reset()
function frees "pHba" on error.

Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c
index 3c667b23a801..359e0acfbc7c 100644
--- a/drivers/scsi/dpt_i2o.c
+++ b/drivers/scsi/dpt_i2o.c
@@ -2046,13 +2046,16 @@ static int adpt_ioctl(struct inode *inode, struct file *file, uint cmd, ulong ar
 		}
 		break;
 		}
-	case I2ORESETCMD:
-		if(pHba->host)
-			spin_lock_irqsave(pHba->host->host_lock, flags);
+	case I2ORESETCMD: {
+		struct Scsi_Host *shost = pHba->host;
+
+		if (shost)
+			spin_lock_irqsave(shost->host_lock, flags);
 		adpt_hba_reset(pHba);
-		if(pHba->host)
-			spin_unlock_irqrestore(pHba->host->host_lock, flags);
+		if (shost)
+			spin_unlock_irqrestore(shost->host_lock, flags);
 		break;
+	}
 	case I2ORESCANCMD:
 		adpt_rescan(pHba);
 		break;
--
To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Kernel Development]     [Kernel Announce]     [Kernel Newbies]     [Linux Networking Development]     [Share Photos]     [IDE]     [Security]     [Git]     [Netfilter]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Device Mapper]

  Powered by Linux