Hello Wenpeng Liang,
The patch 32548870d438: "RDMA/hns: Add support for XRC on HIP09" from
Mar 4, 2021, leads to the following static checker warning:
drivers/infiniband/hw/hns/hns_roce_pd.c:143 hns_roce_xrcd_alloc()
warn: passing casted pointer 'xrcdn' to 'hns_roce_bitmap_alloc()' 32 vs 64.
drivers/infiniband/hw/hns/hns_roce_pd.c
141 static int hns_roce_xrcd_alloc(struct hns_roce_dev *hr_dev, u32 *xrcdn)
142 {
143 return hns_roce_bitmap_alloc(&hr_dev->xrcd_bitmap,
144 (unsigned long *)xrcdn);
The hns_roce_bitmap_alloc() is going to write a ulong to &xrcd->xrcdn
so this will lead to memory corruption.
145 }
146
regards,
dan carpenter
