From 1db90ea239b85479daedb978ea2f0a61776f074f Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Thu, 27 May 2010 14:33:47 +0200 Subject: [PATCH] [SCSI] hptiop: Eliminate a NULL pointer dereference The end of the function is reachable both when host is and is not NULL. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // @r exists@ expression E,E1; identifier f; statement S1,S2,S3; @@ if ((E == NULL && ...) || ...) { ... when != if (...) S1 else S2 when != E = E1 * E->f ... when any return ...; } else S3 // Signed-off-by: Julia Lawall Signed-off-by: James Bottomley --- drivers/scsi/hptiop.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/hptiop.c b/drivers/scsi/hptiop.c index 645f7cd..0729f15 100644 --- a/drivers/scsi/hptiop.c +++ b/drivers/scsi/hptiop.c @@ -1157,7 +1157,7 @@ free_pci_regions: disable_pci_device: pci_disable_device(pcidev); - dprintk("scsi%d: hptiop_probe fail\n", host->host_no); + dprintk("scsi%d: hptiop_probe fail\n", host ? host->host_no : 0); return -ENODEV; } -- 2.7.4