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| author | Lv Yunlong <lyl2019@mail.ustc.edu.cn> | 2021-04-26 17:06:14 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2021-04-27 21:22:29 +0300 |
| commit | 34b39efa5ae82fc0ad0acc27653c12a56328dbbe (patch) | |
| tree | a820f438285564302f2905d592049195d9be8513 /include/uapi/rdma | |
| parent | 3093ee182f01689b89e9f8797b321603e5de4f63 (diff) | |
| download | linux-34b39efa5ae82fc0ad0acc27653c12a56328dbbe.tar.xz | |
RDMA/bnxt_re: Fix a double free in bnxt_qplib_alloc_res
In bnxt_qplib_alloc_res, it calls bnxt_qplib_alloc_dpi_tbl(). Inside
bnxt_qplib_alloc_dpi_tbl, dpit->dbr_bar_reg_iomem is freed via
pci_iounmap() in unmap_io error branch. After the callee returns err code,
bnxt_qplib_alloc_res calls
bnxt_qplib_free_res()->bnxt_qplib_free_dpi_tbl() in the fail branch. Then
dpit->dbr_bar_reg_iomem is freed in the second time by pci_iounmap().
My patch set dpit->dbr_bar_reg_iomem to NULL after it is freed by
pci_iounmap() in the first time, to avoid the double free.
Fixes: 1ac5a4047975 ("RDMA/bnxt_re: Add bnxt_re RoCE driver")
Link: https://lore.kernel.org/r/20210426140614.6722-1-lyl2019@mail.ustc.edu.cn
Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Acked-by: Devesh Sharma <devesh.sharma@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'include/uapi/rdma')
0 files changed, 0 insertions, 0 deletions