diff options
| author | Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com> | 2021-03-29 09:54:14 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-14 09:50:34 +0200 |
| commit | 8fac4bd3674ffdb85f835cf497888fbb913e40a3 (patch) | |
| tree | e8a511533ea55621aeae73fa2bdb923f80b34c95 /drivers/infiniband | |
| parent | f9e9df72dc08873fccfc688fe19b85e93655f052 (diff) | |
IB/hfi1: Use kzalloc() for mmu_rb_handler allocation
[ Upstream commit ca5f72568e034e1295a7ae350b1f786fcbfb2848 ]
The code currently assumes that the mmu_notifier struct
embedded in mmu_rb_handler only contains two fields.
There are now extra fields:
struct mmu_notifier {
struct hlist_node hlist;
const struct mmu_notifier_ops *ops;
struct mm_struct *mm;
struct rcu_head rcu;
unsigned int users;
};
Given that there in no init for the mmu_notifier, a kzalloc() should
be used to insure that any newly added fields are given a predictable
initial value of zero.
Fixes: 06e0ffa69312 ("IB/hfi1: Re-factor MMU notification code")
Link: https://lore.kernel.org/r/1617026056-50483-9-git-send-email-dennis.dalessandro@cornelisnetworks.com
Reviewed-by: Adam Goldman <adam.goldman@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/mmu_rb.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/hfi1/mmu_rb.c b/drivers/infiniband/hw/hfi1/mmu_rb.c index f3fb28e3d5d7..d213f65d4cdd 100644 --- a/drivers/infiniband/hw/hfi1/mmu_rb.c +++ b/drivers/infiniband/hw/hfi1/mmu_rb.c @@ -89,7 +89,7 @@ int hfi1_mmu_rb_register(void *ops_arg, struct mmu_rb_handler *h; int ret; - h = kmalloc(sizeof(*h), GFP_KERNEL); + h = kzalloc(sizeof(*h), GFP_KERNEL); if (!h) return -ENOMEM; |