AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-11-24 02:30:52 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

IB/hfi1: Use kzalloc() for mmu_rb_handler allocation

Browse Source 
[ 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: 06e0ffa693 ("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>
This commit is contained in:
Mike Marciniszyn 2021-03-29 09:54:14 -04:00 committed by Greg Kroah-Hartman
parent f9e9df72dc
commit 8fac4bd367
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/infiniband/hw/hfi1/mmu_rb.c
View File

@ -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;