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Peng Hao 03e964ad35 virtio/virtio_mem: handle a possible NULL as a memcpy parameter 
commit cf4a4493ff70874f8af26d75d4346c591c298e89 upstream.

There is a check for vm->sbm.sb_states before, and it should check
it here as well.

Signed-off-by: Peng Hao <flyingpeng@tencent.com>
Link: https://lore.kernel.org/r/20211222011225.40573-1-flyingpeng@tencent.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Fixes: 5f1f79bbc9e2 ("virtio-mem: Paravirtualized memory hotplug")
Cc: stable@vger.kernel.org # v5.8+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-01-27 11:02:59 +01:00
..
Kconfig
virtio-pci: introduce modern device module
2021-02-23 07:52:58 -05:00
Makefile
virtio-pci: introduce modern device module
2021-02-23 07:52:58 -05:00
virtio_balloon.c
virtio-balloon: Use virtio_find_vqs() helper
2021-09-06 07:20:56 -04:00
virtio_dma_buf.c
virtio: fix build for configs without dma-bufs
2020-08-19 06:43:28 +02:00
virtio_input.c
virtio-input: add multi-touch support
2021-02-23 07:52:59 -05:00
virtio_mem.c
virtio/virtio_mem: handle a possible NULL as a memcpy parameter
2022-01-27 11:02:59 +01:00
virtio_mmio.c
virtio-mmio: Use to_virtio_mmio_device() to simply code
2021-03-14 04:37:35 -04:00
virtio_pci_common.c
virtio_pci: Support surprise removal of virtio pci device
2021-08-10 11:50:55 -04:00
virtio_pci_common.h
virtio-pci: introduce modern device module
2021-02-23 07:52:58 -05:00
virtio_pci_legacy.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 78
2019-05-24 17:37:51 +02:00
virtio_pci_modern_dev.c
virtio-pci library: introduce vp_modern_get_driver_features()
2021-07-08 07:49:01 -04:00
virtio_pci_modern.c
virtio_pci_modern: __force cast the notify mapping
2021-05-04 04:19:58 -04:00
virtio_ring.c
virtio_ring: Fix querying of maximum DMA mapping size for virtio device
2021-12-22 09:32:36 +01:00
virtio_vdpa.c
virtio_vdpa: reject invalid vq indices
2021-08-11 06:44:23 -04:00
virtio.c
virtio: write back F_VERSION_1 before validate
2021-10-13 08:35:36 -04:00