diff options
| author | Xiyu Yang <xiyuyang19@fudan.edu.cn> | 2021-07-19 14:00:53 +0800 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2021-07-30 09:34:26 -0300 |
| commit | a0293eb24936ff30e5a23f9438fd4ad1c4009dbf (patch) | |
| tree | 0c8db95f2b80caf318a45141b7fbde54c78a1103 /drivers/infiniband/hw/hfi1/init.c | |
| parent | 62004871e1fa7f9a60797595c03477af5b5ec36f (diff) | |
RDMA/hfi1: Convert from atomic_t to refcount_t on hfi1_devdata->user_refcount
refcount_t type and corresponding API can protect refcounters from
accidental underflow and overflow and further use-after-free situations.
Link: https://lore.kernel.org/r/1626674454-56075-1-git-send-email-xiyuyang19@fudan.edu.cn
Signed-off-by: Xiyu Yang <xiyuyang19@fudan.edu.cn>
Signed-off-by: Xin Tan <tanxin.ctf@gmail.com>
Tested-by: Josh Fisher <josh.fisher@cornelisnetworks.com>
Acked-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/hw/hfi1/init.c')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/init.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/hfi1/init.c b/drivers/infiniband/hw/hfi1/init.c index 34106e5be679..f37b157dbdb2 100644 --- a/drivers/infiniband/hw/hfi1/init.c +++ b/drivers/infiniband/hw/hfi1/init.c @@ -1747,7 +1747,7 @@ static void wait_for_clients(struct hfi1_devdata *dd) * Remove the device init value and complete the device if there is * no clients or wait for active clients to finish. */ - if (atomic_dec_and_test(&dd->user_refcount)) + if (refcount_dec_and_test(&dd->user_refcount)) complete(&dd->user_comp); wait_for_completion(&dd->user_comp); |