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| author | Lv Yunlong <[email protected]> | 2021-04-26 14:06:14 +0000 |
|---|---|---|
| committer | Jason Gunthorpe <[email protected]> | 2021-04-27 18:22:29 +0000 |
| commit | 34b39efa5ae82fc0ad0acc27653c12a56328dbbe (patch) | |
| tree | a820f438285564302f2905d592049195d9be8513 /drivers/infiniband/hw/qedr/main.c | |
| parent | RDMA/siw: Fix a use after free in siw_alloc_mr (diff) | |
| download | kernel-34b39efa5ae82fc0ad0acc27653c12a56328dbbe.tar.gz kernel-34b39efa5ae82fc0ad0acc27653c12a56328dbbe.zip | |
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/[email protected]
Signed-off-by: Lv Yunlong <[email protected]>
Reviewed-by: Leon Romanovsky <[email protected]>
Acked-by: Devesh Sharma <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
Diffstat (limited to 'drivers/infiniband/hw/qedr/main.c')
0 files changed, 0 insertions, 0 deletions