From: Tejun Heo <tj@kernel.org>
Date: Fri, 30 Aug 2019 06:10:58 -0700
Subject: [PATCH] blkcg: add missing NULL check in ioc_cpd_alloc()
References: bsc#1156419,jsc#SLE-8281
Git-commit: e916ad29d96485e5aa3d3237bfeab1522c713d5e
Patch-mainline: v5.4-rc1
ioc_cpd_alloc() forgot to check NULL return from kzalloc(). Add it.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Hannes Reinecke <hare@suse.de>
---
block/blk-iocost.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/block/blk-iocost.c b/block/blk-iocost.c
index 9c8046ac5925..2aae8ec391ef 100644
--- a/block/blk-iocost.c
+++ b/block/blk-iocost.c
@@ -1888,8 +1888,10 @@ static struct blkcg_policy_data *ioc_cpd_alloc(gfp_t gfp)
struct ioc_cgrp *iocc;
iocc = kzalloc(sizeof(struct ioc_cgrp), gfp);
- iocc->dfl_weight = CGROUP_WEIGHT_DFL;
+ if (!iocc)
+ return NULL;
+ iocc->dfl_weight = CGROUP_WEIGHT_DFL;
return &iocc->cpd;
}
--
2.16.4