Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.4 19/23] IB/umem: Release pid in error and ODP flow | Date | Tue, 31 Jan 2017 06:37:21 +0100 |
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4.4-stable review patch. If anyone has any objections, please let me know.
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From: Kenneth Lee <liguozhu@hisilicon.com>
commit 828f6fa65ce7e80f77f5ab12942e44eb3d9d174e upstream.
1. Release pid before enter odp flow 2. Release pid when fail to allocate memory
Fixes: 87773dd56d54 ("IB: ib_umem_release() should decrement mm->pinned_vm from ib_umem_get") Fixes: 8ada2c1c0c1d ("IB/core: Add support for on demand paging regions") Signed-off-by: Kenneth Lee <liguozhu@hisilicon.com> Reviewed-by: Haggai Eran <haggaie@mellanox.com> Reviewed-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Doug Ledford <dledford@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/infiniband/core/umem.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/infiniband/core/umem.c +++ b/drivers/infiniband/core/umem.c @@ -134,6 +134,7 @@ struct ib_umem *ib_umem_get(struct ib_uc IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_MW_BIND)); if (access & IB_ACCESS_ON_DEMAND) { + put_pid(umem->pid); ret = ib_umem_odp_get(context, umem); if (ret) { kfree(umem); @@ -149,6 +150,7 @@ struct ib_umem *ib_umem_get(struct ib_uc page_list = (struct page **) __get_free_page(GFP_KERNEL); if (!page_list) { + put_pid(umem->pid); kfree(umem); return ERR_PTR(-ENOMEM); }
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