This is a note to let you know that I've just added the patch titled
IB/umem: Release pid in error and ODP flow
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ib-umem-release-pid-in-error-and-odp-flow.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 828f6fa65ce7e80f77f5ab12942e44eb3d9d174e Mon Sep 17 00:00:00 2001
From: Kenneth Lee <liguozhu@xxxxxxxxxxxxx>
Date: Thu, 5 Jan 2017 15:00:05 +0800
Subject: IB/umem: Release pid in error and ODP flow
From: Kenneth Lee <liguozhu@xxxxxxxxxxxxx>
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@xxxxxxxxxxxxx>
Reviewed-by: Haggai Eran <haggaie@xxxxxxxxxxxx>
Reviewed-by: Leon Romanovsky <leon@xxxxxxxxxx>
Signed-off-by: Doug Ledford <dledford@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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);
}
Patches currently in stable-queue which might be from liguozhu@xxxxxxxxxxxxx are
queue-4.9/ib-umem-release-pid-in-error-and-odp-flow.patch
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