diff options
| author | Tom Rix <trix@redhat.com> | 2020-12-30 05:46:53 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2021-01-07 23:37:11 +0300 |
| commit | f2bc3af6353cb2a33dfa9d270d999d839eef54cb (patch) | |
| tree | c6f158c01dc4919e6957b40be489d3e5684456b9 /drivers/infiniband | |
| parent | a306aba9c8d869b1fdfc8ad9237f1ed718ea55e6 (diff) | |
| download | linux-f2bc3af6353cb2a33dfa9d270d999d839eef54cb.tar.xz | |
RDMA/ocrdma: Fix use after free in ocrdma_dealloc_ucontext_pd()
In ocrdma_dealloc_ucontext_pd() uctx->cntxt_pd is assigned to the variable
pd and then after uctx->cntxt_pd is freed, the variable pd is passed to
function _ocrdma_dealloc_pd() which dereferences pd directly or through
its call to ocrdma_mbx_dealloc_pd().
Reorder the free using the variable pd.
Cc: stable@vger.kernel.org
Fixes: 21a428a019c9 ("RDMA: Handle PD allocations by IB/core")
Link: https://lore.kernel.org/r/20201230024653.1516495-1-trix@redhat.com
Signed-off-by: Tom Rix <trix@redhat.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/ocrdma/ocrdma_verbs.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c index bc98bd950d99..3acb5c10b155 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c @@ -434,9 +434,9 @@ static void ocrdma_dealloc_ucontext_pd(struct ocrdma_ucontext *uctx) pr_err("%s(%d) Freeing in use pdid=0x%x.\n", __func__, dev->id, pd->id); } - kfree(uctx->cntxt_pd); uctx->cntxt_pd = NULL; _ocrdma_dealloc_pd(dev, pd); + kfree(pd); } static struct ocrdma_pd *ocrdma_get_ucontext_pd(struct ocrdma_ucontext *uctx) |