On Tue, Mar 13, 2018 at 04:59:56PM +0800, oulijun wrote:
> 在 2018/3/12 22:16, Leon Romanovsky 写道:
> > From: Leon Romanovsky <leonro@xxxxxxxxxxxx>
> >
> > Hi,
> >
> > The reason to this patchset is described in "RDMA/mlx4: Clear all
> > allocated memory by default" accommodated with relevant crash report.
> >
> Hi， leon
> I have noted your patchset and know the patch RDMA/mlx4: Clear all allocated memory by default
> how to test the crash on others? I want to know if all places need to use kzalloc instead of
> kmalloc and use kcalloc instead of kmalloc_array?
I'm working on new version of this fix which won't require from driver authors
such changes from kmalloc to kzalloc.
In meantime, you can take latest rdma-next compile with KASAN enabled
and run ibv_rc_pingpong, if the server's memory is dirty, you will get crash
for PD object.
59 struct ib_pd *hns_roce_alloc_pd(struct ib_device *ib_dev,
60 struct ib_ucontext *context,
61 struct ib_udata *udata)
62 {
63 struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
64 struct device *dev = hr_dev->dev;
65 struct hns_roce_pd *pd;
66 int ret;
67
68 pd = kmalloc(sizeof(*pd), GFP_KERNEL);
69 if (!pd)
70 return ERR_PTR(-ENOMEM);
Thanks
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