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From 916423392b46167c6683b0240610bb5a745590da Mon Sep 17 00:00:00 2001
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From: Jon Maloy <jmaloy@redhat.com>
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Date: Wed, 13 Apr 2022 14:51:06 -0400
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Subject: [PATCH 2/3] softmmu/physmem: Simplify flatview_write and
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address_space_access_valid
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Jon Maloy <jmaloy@redhat.com>
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RH-MergeRequest: 151: hw/intc/arm_gicv3: Check for !MEMTX_OK instead of MEMTX_ERROR
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RH-Commit: [2/3] daabe41eefd5c519def592e374fa368e32a680d3 (jmaloy/qemu-kvm)
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RH-Bugzilla: 1999236
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: Peter Xu <peterx@redhat.com>
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1999236
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Upstream: Merged
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CVE: CVE-2021-3750
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commit 58e74682baf4e1ad26b064d8c02e5bc99c75c5d9
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Author: Philippe Mathieu-Daudé <philmd@redhat.com>
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Date: Wed Dec 15 19:24:20 2021 +0100
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softmmu/physmem: Simplify flatview_write and address_space_access_valid
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Remove unuseful local 'result' variables.
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Reviewed-by: Peter Xu <peterx@redhat.com>
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Reviewed-by: David Hildenbrand <david@redhat.com>
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Reviewed-by: Alexander Bulekov <alxndr@bu.edu>
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Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
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Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
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Message-Id: <20211215182421.418374-3-philmd@redhat.com>
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Signed-off-by: Thomas Huth <thuth@redhat.com>
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(cherry picked from commit 58e74682baf4e1ad26b064d8c02e5bc99c75c5d9)
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Signed-off-by: Jon Maloy <jmaloy@redhat.com>
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---
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softmmu/physmem.c | 11 +++--------
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1 file changed, 3 insertions(+), 8 deletions(-)
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diff --git a/softmmu/physmem.c b/softmmu/physmem.c
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index 3524c04c2a..483a31be81 100644
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--- a/softmmu/physmem.c
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+++ b/softmmu/physmem.c
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@@ -2815,14 +2815,11 @@ static MemTxResult flatview_write(FlatView *fv, hwaddr addr, MemTxAttrs attrs,
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hwaddr l;
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hwaddr addr1;
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MemoryRegion *mr;
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- MemTxResult result = MEMTX_OK;
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l = len;
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mr = flatview_translate(fv, addr, &addr1, &l, true, attrs);
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- result = flatview_write_continue(fv, addr, attrs, buf, len,
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- addr1, l, mr);
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-
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- return result;
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+ return flatview_write_continue(fv, addr, attrs, buf, len,
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+ addr1, l, mr);
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}
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/* Called within RCU critical section. */
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@@ -3119,12 +3116,10 @@ bool address_space_access_valid(AddressSpace *as, hwaddr addr,
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MemTxAttrs attrs)
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{
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FlatView *fv;
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- bool result;
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RCU_READ_LOCK_GUARD();
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fv = address_space_to_flatview(as);
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- result = flatview_access_valid(fv, addr, len, is_write, attrs);
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- return result;
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+ return flatview_access_valid(fv, addr, len, is_write, attrs);
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}
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static hwaddr
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--
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2.27.0
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