* [PATCH 5.10 5.15] vfio/iommu_type1: replace kfree with kvfree
@ 2026-06-19 15:02 Nikolay Kuratov
2026-06-21 13:47 ` Sasha Levin
0 siblings, 1 reply; 2+ messages in thread
From: Nikolay Kuratov @ 2026-06-19 15:02 UTC (permalink / raw)
To: stable
Cc: linux-kernel, kvm, Kirti Wankhede, Yan Zhao, Nikolay Kuratov,
Jiacheng Shi, Alex Williamson
From: Jiacheng Shi <billsjc@sjtu.edu.cn>
From: Jiacheng Shi <billsjc@sjtu.edu.cn>
commit 2bed2ced40c97b8540ff38df0149e8ecb2bf4c65 upstream.
Variables allocated by kvzalloc should not be freed by kfree.
Because they may be allocated by vmalloc.
So we replace kfree with kvfree here.
Fixes: d6a4c185660c ("vfio iommu: Implementation of ioctl for dirty pages tracking")
Signed-off-by: Jiacheng Shi <billsjc@sjtu.edu.cn>
Link: https://lore.kernel.org/r/20211212091600.2560-1-billsjc@sjtu.edu.cn
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Nikolay Kuratov <kniv@yandex-team.ru>
---
drivers/vfio/vfio_iommu_type1.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
index f17490ab238f..9394aa9444c1 100644
--- a/drivers/vfio/vfio_iommu_type1.c
+++ b/drivers/vfio/vfio_iommu_type1.c
@@ -256,7 +256,7 @@ static int vfio_dma_bitmap_alloc(struct vfio_dma *dma, size_t pgsize)
static void vfio_dma_bitmap_free(struct vfio_dma *dma)
{
- kfree(dma->bitmap);
+ kvfree(dma->bitmap);
dma->bitmap = NULL;
}
--
2.34.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH 5.10 5.15] vfio/iommu_type1: replace kfree with kvfree
2026-06-19 15:02 [PATCH 5.10 5.15] vfio/iommu_type1: replace kfree with kvfree Nikolay Kuratov
@ 2026-06-21 13:47 ` Sasha Levin
0 siblings, 0 replies; 2+ messages in thread
From: Sasha Levin @ 2026-06-21 13:47 UTC (permalink / raw)
To: stable
Cc: Sasha Levin, linux-kernel, kvm, Kirti Wankhede, Yan Zhao,
Nikolay Kuratov, Jiacheng Shi, Alex Williamson
> commit 2bed2ced40c97b8540ff38df0149e8ecb2bf4c65 upstream.
>
> Variables allocated by kvzalloc should not be freed by kfree.
> Because they may be allocated by vmalloc.
> So we replace kfree with kvfree here.
Queued for 5.10 and 5.15, thanks.
--
Thanks,
Sasha
^ permalink raw reply [flat|nested] 2+ messages in thread
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