Messages in this thread Patch in this message | | | Date | Fri, 30 Aug 2019 06:10:58 -0700 | From | Tejun Heo <> | Subject | [PATCH block/for-next] blkcg: add missing NULL check in ioc_cpd_alloc() |
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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> --- 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; }
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