From: Bobi Jam <bobijam...@intel.com>

lov_device::ld_target[ost_idx] could be NULL if the OST target is
not filled in lov_device::ld_lov::lov_tgt_desc[ost_idx] yet.

Signed-off-by: Bobi Jam <bobijam...@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-8018
Reviewed-on: http://review.whamcloud.com/21411
Reviewed-by: Jinshan Xiong <jinshan.xi...@intel.com>
Reviewed-by: John L. Hammond <john.hamm...@intel.com>
Reviewed-by: Oleg Drokin <oleg.dro...@intel.com>
Signed-off-by: James Simmons <jsimm...@infradead.org>
---
 drivers/staging/lustre/lustre/lov/lov_object.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/staging/lustre/lustre/lov/lov_object.c 
b/drivers/staging/lustre/lustre/lov/lov_object.c
index 9c4b5ab..977579c 100644
--- a/drivers/staging/lustre/lustre/lov/lov_object.c
+++ b/drivers/staging/lustre/lustre/lov/lov_object.c
@@ -266,6 +266,13 @@ static int lov_init_raid0(const struct lu_env *env, struct 
lov_device *dev,
                        if (result != 0)
                                goto out;
 
+                       if (!dev->ld_target[ost_idx]) {
+                               CERROR("%s: OST %04x is not initialized\n",
+                               lov2obd(dev->ld_lov)->obd_name, ost_idx);
+                               result = -EIO;
+                               goto out;
+                       }
+
                        subdev = lovsub2cl_dev(dev->ld_target[ost_idx]);
                        subconf->u.coc_oinfo = oinfo;
                        LASSERTF(subdev, "not init ost %d\n", ost_idx);
-- 
1.8.3.1

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