diff mbox series

[v3,1/9] libata: fix ata_host_alloc_pinfo()

Message ID 20210806111145.445697-2-damien.lemoal@wdc.com (mailing list archive)
State New, archived
Headers show
Series libata cleanups and improvements | expand

Commit Message

Damien Le Moal Aug. 6, 2021, 11:11 a.m. UTC 
Avoid a potential NULL pointer dereference by testing that the ATA port
info variable "pi".

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
---
 drivers/ata/libata-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 61c762961ca8..ea8b91297f12 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -5458,7 +5458,7 @@  struct ata_host *ata_host_alloc_pinfo(struct device *dev,
 		ap->link.flags |= pi->link_flags;
 		ap->ops = pi->port_ops;
 
-		if (!host->ops && (pi->port_ops != &ata_dummy_port_ops))
+		if (!host->ops && pi && pi->port_ops != &ata_dummy_port_ops)
 			host->ops = pi->port_ops;
 	}