On Mon, Jul 11, 2022 at 07:52:25AM -0400, Dennis Dalessandro wrote:
> On 7/11/22 3:07 AM, Jianglei Nie wrote:
> > setup_base_ctxt() allocates a memory chunk for uctxt->groups with
> > hfi1_alloc_ctxt_rcv_groups(). When init_user_ctxt() fails, uctxt->groups
> > is not released, which will lead to a memory leak.
> >
> > We should release the uctxt->groups with hfi1_free_ctxt_rcv_groups()
> > when init_user_ctxt() fails.
> >
> > Signed-off-by: Jianglei Nie <niejianglei2021@xxxxxxx>
> > ---
> > drivers/infiniband/hw/hfi1/file_ops.c | 4 +++-
> > 1 file changed, 3 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/infiniband/hw/hfi1/file_ops.c b/drivers/infiniband/hw/hfi1/file_ops.c
> > index 2e4cf2b11653..629beff053ad 100644
> > --- a/drivers/infiniband/hw/hfi1/file_ops.c
> > +++ b/drivers/infiniband/hw/hfi1/file_ops.c
> > @@ -1179,8 +1179,10 @@ static int setup_base_ctxt(struct hfi1_filedata *fd,
> > goto done;
> >
> > ret = init_user_ctxt(fd, uctxt);
> > - if (ret)
> > + if (ret) {
> > + hfi1_free_ctxt_rcv_groups(uctxt);
> > goto done;
> > + }
> >
> > user_init(uctxt);
> >
>
> Doesn't seem like this patch is correct. The free is done when the file is
> closed, along with other clean up stuff. See hfi1_file_close().
Can setup_base_ctxt() be called twice for same uctxt?
You are allocating rcd->groups and not releasing.
Thanks
>
> -Denny
