[HPDD-discuss] [PATCH] staging: lustre: lustre: obdclass: obd_mount.c: Fix NULL dereference
OBD_ALLOC_PTR(uuid) invokes kmalloc, which may return NULL. This fix
adds a check before dereferencing such pointer.
Signed-off-by: Kumar Amit Mehta <gmate.amit(a)gmail.com>
---
drivers/staging/lustre/lustre/obdclass/obd_mount.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/staging/lustre/lustre/obdclass/obd_mount.c
b/drivers/staging/lustre/lustre/obdclass/obd_mount.c
index 4f39cdee..3c0c910 100644
--- a/drivers/staging/lustre/lustre/obdclass/obd_mount.c
+++ b/drivers/staging/lustre/lustre/obdclass/obd_mount.c
@@ -376,6 +376,11 @@ int lustre_start_mgc(struct super_block *sb)
/* Random uuid for MGC allows easier reconnects */
OBD_ALLOC_PTR(uuid);
+ if (!uuid) {
+ rc = -ENOMEM;
+ goto out_free;
+ }
+
ll_generate_random_uuid(uuidc);
class_uuid_unparse(uuidc, uuid);
--
2.1.0