Revert "qemu: backport upstream fix for CVE-2022-2962."

Revert the merge request Revert the merge request !345



This patch wasn't applied to qemu-native where it should. Will
be brought back when fixed.

This reverts commit 98a3c92f.

Signed-off-by: Marta Rybczynska <marta.rybczynska@linaro.org>

meta-oniro-staging/recipes-support/qemu/files/0001-qemu-restrict-dma-engine-to-memory.patch

-From: Jason Wang <jasowang@redhat.com>, Zheyu Ma <zheyuma97@gmail.com>
-Date: Tue, 11 Oct 2022 17:20:10 +0200
-Subject: [PATCH] qemu: Restrict DMA engine to memories
-
-The DMA engine is started by I/O access and then itself accesses the
-I/O registers, triggering a reentrancy bug.
-
-The following log can reveal it:
-==5637==ERROR: AddressSanitizer: stack-overflow
-    #0 0x5595435f6078 in tulip_xmit_list_update qemu/hw/net/tulip.c:673
-    #1 0x5595435f204a in tulip_write qemu/hw/net/tulip.c:805:13
-    #2 0x559544637f86 in memory_region_write_accessor qemu/softmmu/memory.c:492:5
-    #3 0x5595446379fa in access_with_adjusted_size qemu/softmmu/memory.c:554:18
-    #4 0x5595446372fa in memory_region_dispatch_write qemu/softmmu/memory.c
-    #5 0x55954468b74c in flatview_write_continue qemu/softmmu/physmem.c:2825:23
-    #6 0x559544683662 in flatview_write qemu/softmmu/physmem.c:2867:12
-    #7 0x5595446833f3 in address_space_write qemu/softmmu/physmem.c:2963:18
-    #8 0x5595435fb082 in dma_memory_rw_relaxed qemu/include/sysemu/dma.h:87:12
-    #9 0x5595435fb082 in dma_memory_rw qemu/include/sysemu/dma.h:130:12
-    #10 0x5595435fb082 in dma_memory_write qemu/include/sysemu/dma.h:171:12
-    #11 0x5595435fb082 in stl_le_dma qemu/include/sysemu/dma.h:272:1
-    #12 0x5595435fb082 in stl_le_pci_dma qemu/include/hw/pci/pci.h:910:1
-    #13 0x5595435fb082 in tulip_desc_write qemu/hw/net/tulip.c:101:9
-    #14 0x5595435f7e3d in tulip_xmit_list_update qemu/hw/net/tulip.c:706:9
-    #15 0x5595435f204a in tulip_write qemu/hw/net/tulip.c:805:13
-
-Fix this bug by restricting the DMA engine to memories regions.
-
-Signed-off-by: Ghassane Ben El Aattar <ghassaneb.aattar@huawei.com>
-
-CVE: CVE-2022-2962
-
-Upstream-Status: Backport [https://gitlab.com/qemu-project/qemu/-/commit/36a894aeb64a2e02871016da1c37d4a4ca109182]
----
- hw/net/tulip.c | 4 ++--
- 1 file changed, 2 insertions(+), 2 deletions(-)
-
-diff --git a/hw/net/tulip.c b/hw/net/tulip.c
-index 097e905bec..b9e42c322a 100644
---- a/hw/net/tulip.c
-+++ b/hw/net/tulip.c
-@@ -70,7 +70,7 @@ static const VMStateDescription vmstate_pci_tulip = {
- static void tulip_desc_read(TULIPState *s, hwaddr p,
-         struct tulip_descriptor *desc)
- {
--    const MemTxAttrs attrs = MEMTXATTRS_UNSPECIFIED;
-+    const MemTxAttrs attrs = { .memory = true };
- 
-     if (s->csr[0] & CSR0_DBO) {
-         ldl_be_pci_dma(&s->dev, p, &desc->status, attrs);
-@@ -88,7 +88,7 @@ static void tulip_desc_read(TULIPState *s, hwaddr p,
- static void tulip_desc_write(TULIPState *s, hwaddr p,
-         struct tulip_descriptor *desc)
- {
--    const MemTxAttrs attrs = MEMTXATTRS_UNSPECIFIED;
-+    const MemTxAttrs attrs = { .memory = true };
- 
-     if (s->csr[0] & CSR0_DBO) {
-         stl_be_pci_dma(&s->dev, p, desc->status, attrs);
--- 

meta-oniro-staging/recipes-support/qemu/qemu_%.bbappend

-# SPDX-FileCopyrightText: Huawei Inc.
-#
-# SPDX-License-Identifier: MIT
-
-FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"
-
-SRC_URI += "file://0001-qemu-restrict-dma-engine-to-memory.patch"
-