This is a note to let you know that I've just added the patch titled
vfio/spapr_tce: Check kzalloc() return when preregistering memory
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:
vfio-spapr_tce-check-kzalloc-return-when-preregistering-memory.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 foo@baz Sun Mar 18 16:55:33 CET 2018
From: Alexey Kardashevskiy <aik@xxxxxxxxx>
Date: Mon, 27 Mar 2017 14:23:40 +1100
Subject: vfio/spapr_tce: Check kzalloc() return when preregistering memory
From: Alexey Kardashevskiy <aik@xxxxxxxxx>
[ Upstream commit 3393af24b665cb0aea7353b05e522b03ab1e7d73 ]
This adds missing checking for kzalloc() return value.
Fixes: 4b6fad7097f8 ("powerpc/mm/iommu, vfio/spapr: Put pages on VFIO container shutdown")
Signed-off-by: Alexey Kardashevskiy <aik@xxxxxxxxx>
Reviewed-by: David Gibson <david@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Alex Williamson <alex.williamson@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/vfio/vfio_iommu_spapr_tce.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/vfio/vfio_iommu_spapr_tce.c
+++ b/drivers/vfio/vfio_iommu_spapr_tce.c
@@ -195,6 +195,11 @@ static long tce_iommu_register_pages(str
return ret;
tcemem = kzalloc(sizeof(*tcemem), GFP_KERNEL);
+ if (!tcemem) {
+ mm_iommu_put(container->mm, mem);
+ return -ENOMEM;
+ }
+
tcemem->mem = mem;
list_add(&tcemem->next, &container->prereg_list);
Patches currently in stable-queue which might be from aik@xxxxxxxxx are
queue-4.9/vfio-spapr_tce-check-kzalloc-return-when-preregistering-memory.patch
queue-4.9/vfio-powerpc-spapr_tce-enforce-iommu-type-compatibility-check.patch