update reentrancy patches to version in upstream git

The previous version was picked from the mailing list and still had
an object_dynamic_cast call in a hot path, which is avoided with the
version that landed in git.

Also adds a few more exceptions for devices that need reentrancy.

Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>

debian/patches/extra/0002-memory-prevent-dma-reentracy-issues.patch

@@ -1,118 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Alexander Bulekov <alxndr@bu.edu>
-Date: Sat, 4 Feb 2023 23:07:34 -0500
-Subject: [PATCH] memory: prevent dma-reentracy issues
-
-Add a flag to the DeviceState, when a device is engaged in PIO/MMIO/DMA.
-This flag is set/checked prior to calling a device's MemoryRegion
-handlers, and set when device code initiates DMA.  The purpose of this
-flag is to prevent two types of DMA-based reentrancy issues:
-
-1.) mmio -> dma -> mmio case
-2.) bh -> dma write -> mmio case
-
-These issues have led to problems such as stack-exhaustion and
-use-after-frees.
-
-Summary of the problem from Peter Maydell:
-https://lore.kernel.org/qemu-devel/CAFEAcA_23vc7hE3iaM-JVA6W38LK4hJoWae5KcknhPRD5fPBZA@mail.gmail.com
-
-Resolves: https://gitlab.com/qemu-project/qemu/-/issues/62
-Resolves: https://gitlab.com/qemu-project/qemu/-/issues/540
-Resolves: https://gitlab.com/qemu-project/qemu/-/issues/541
-Resolves: https://gitlab.com/qemu-project/qemu/-/issues/556
-Resolves: https://gitlab.com/qemu-project/qemu/-/issues/557
-Resolves: https://gitlab.com/qemu-project/qemu/-/issues/827
-Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1282
-
-Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
-Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
-Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
-Acked-by: Peter Xu <peterx@redhat.com>
-(picked-up from https://lists.nongnu.org/archive/html/qemu-devel/2023-02/msg01142.html)
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
----
- include/hw/qdev-core.h |  7 +++++++
- softmmu/memory.c       | 17 +++++++++++++++++
- softmmu/trace-events   |  1 +
- 3 files changed, 25 insertions(+)
-
-diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h
-index bd50ad5ee1..7623703943 100644
---- a/include/hw/qdev-core.h
-+++ b/include/hw/qdev-core.h
-@@ -162,6 +162,10 @@ struct NamedClockList {
-     QLIST_ENTRY(NamedClockList) node;
- };
- 
-+typedef struct {
-+    bool engaged_in_io;
-+} MemReentrancyGuard;
-+
- /**
-  * DeviceState:
-  * @realized: Indicates whether the device has been fully constructed.
-@@ -194,6 +198,9 @@ struct DeviceState {
-     int alias_required_for_version;
-     ResettableState reset;
-     GSList *unplug_blockers;
-+
-+    /* Is the device currently in mmio/pio/dma? Used to prevent re-entrancy */
-+    MemReentrancyGuard mem_reentrancy_guard;
- };
- 
- struct DeviceListener {
-diff --git a/softmmu/memory.c b/softmmu/memory.c
-index b1a6cae6f5..e4d2268d32 100644
---- a/softmmu/memory.c
-+++ b/softmmu/memory.c
-@@ -533,6 +533,7 @@ static MemTxResult access_with_adjusted_size(hwaddr addr,
-     uint64_t access_mask;
-     unsigned access_size;
-     unsigned i;
-+    DeviceState *dev = NULL;
-     MemTxResult r = MEMTX_OK;
- 
-     if (!access_size_min) {
-@@ -542,6 +543,19 @@ static MemTxResult access_with_adjusted_size(hwaddr addr,
-         access_size_max = 4;
-     }
- 
-+    /* Do not allow more than one simultanous access to a device's IO Regions */
-+    if (mr->owner &&
-+        !mr->ram_device && !mr->ram && !mr->rom_device && !mr->readonly) {
-+        dev = (DeviceState *) object_dynamic_cast(mr->owner, TYPE_DEVICE);
-+        if (dev) {
-+            if (dev->mem_reentrancy_guard.engaged_in_io) {
-+                trace_memory_region_reentrant_io(get_cpu_index(), mr, addr, size);
-+                return MEMTX_ERROR;
-+            }
-+            dev->mem_reentrancy_guard.engaged_in_io = true;
-+        }
-+    }
-+
-     /* FIXME: support unaligned access? */
-     access_size = MAX(MIN(size, access_size_max), access_size_min);
-     access_mask = MAKE_64BIT_MASK(0, access_size * 8);
-@@ -556,6 +570,9 @@ static MemTxResult access_with_adjusted_size(hwaddr addr,
-                         access_mask, attrs);
-         }
-     }
-+    if (dev) {
-+        dev->mem_reentrancy_guard.engaged_in_io = false;
-+    }
-     return r;
- }
- 
-diff --git a/softmmu/trace-events b/softmmu/trace-events
-index 22606dc27b..62d04ea9a7 100644
---- a/softmmu/trace-events
-+++ b/softmmu/trace-events
-@@ -13,6 +13,7 @@ memory_region_ops_read(int cpu_index, void *mr, uint64_t addr, uint64_t value, u
- memory_region_ops_write(int cpu_index, void *mr, uint64_t addr, uint64_t value, unsigned size, const char *name) "cpu %d mr %p addr 0x%"PRIx64" value 0x%"PRIx64" size %u name '%s'"
- memory_region_subpage_read(int cpu_index, void *mr, uint64_t offset, uint64_t value, unsigned size) "cpu %d mr %p offset 0x%"PRIx64" value 0x%"PRIx64" size %u"
- memory_region_subpage_write(int cpu_index, void *mr, uint64_t offset, uint64_t value, unsigned size) "cpu %d mr %p offset 0x%"PRIx64" value 0x%"PRIx64" size %u"
-+memory_region_reentrant_io(int cpu_index, void *mr, uint64_t offset, unsigned size) "cpu %d mr %p offset 0x%"PRIx64" size %u"
- memory_region_ram_device_read(int cpu_index, void *mr, uint64_t addr, uint64_t value, unsigned size) "cpu %d mr %p addr 0x%"PRIx64" value 0x%"PRIx64" size %u"
- memory_region_ram_device_write(int cpu_index, void *mr, uint64_t addr, uint64_t value, unsigned size) "cpu %d mr %p addr 0x%"PRIx64" value 0x%"PRIx64" size %u"
- memory_region_sync_dirty(const char *mr, const char *listener, int global) "mr '%s' listener '%s' synced (global=%d)"

debian/patches/extra/0005-memory-Allow-disabling-re-entrancy-checking-per-MR.patch

@@ -1,38 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Alexander Bulekov <alxndr@bu.edu>
-Date: Mon, 13 Mar 2023 04:24:16 -0400
-Subject: [PATCH] memory: Allow disabling re-entrancy checking per-MR
-
-Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
----
- include/exec/memory.h | 3 +++
- softmmu/memory.c      | 2 +-
- 2 files changed, 4 insertions(+), 1 deletion(-)
-
-diff --git a/include/exec/memory.h b/include/exec/memory.h
-index 15ade918ba..e6819e3c39 100644
---- a/include/exec/memory.h
-+++ b/include/exec/memory.h
-@@ -791,6 +791,9 @@ struct MemoryRegion {
-     unsigned ioeventfd_nb;
-     MemoryRegionIoeventfd *ioeventfds;
-     RamDiscardManager *rdm; /* Only for RAM */
-+
-+    /* For devices designed to perform re-entrant IO into their own IO MRs */
-+    bool disable_reentrancy_guard;
- };
- 
- struct IOMMUMemoryRegion {
-diff --git a/softmmu/memory.c b/softmmu/memory.c
-index e4d2268d32..d88acb204b 100644
---- a/softmmu/memory.c
-+++ b/softmmu/memory.c
-@@ -544,7 +544,7 @@ static MemTxResult access_with_adjusted_size(hwaddr addr,
-     }
- 
-     /* Do not allow more than one simultanous access to a device's IO Regions */
--    if (mr->owner &&
-+    if (mr->owner && !mr->disable_reentrancy_guard &&
-         !mr->ram_device && !mr->ram && !mr->rom_device && !mr->readonly) {
-         dev = (DeviceState *) object_dynamic_cast(mr->owner, TYPE_DEVICE);
-         if (dev) {

debian/patches/extra/0005-memory-prevent-dma-reentracy-issues.patch

@@ -0,0 +1,130 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Alexander Bulekov <alxndr@bu.edu>
+Date: Thu, 27 Apr 2023 17:10:06 -0400
+Subject: [PATCH] memory: prevent dma-reentracy issues
+
+Add a flag to the DeviceState, when a device is engaged in PIO/MMIO/DMA.
+This flag is set/checked prior to calling a device's MemoryRegion
+handlers, and set when device code initiates DMA.  The purpose of this
+flag is to prevent two types of DMA-based reentrancy issues:
+
+1.) mmio -> dma -> mmio case
+2.) bh -> dma write -> mmio case
+
+These issues have led to problems such as stack-exhaustion and
+use-after-frees.
+
+Summary of the problem from Peter Maydell:
+https://lore.kernel.org/qemu-devel/CAFEAcA_23vc7hE3iaM-JVA6W38LK4hJoWae5KcknhPRD5fPBZA@mail.gmail.com
+
+Resolves: https://gitlab.com/qemu-project/qemu/-/issues/62
+Resolves: https://gitlab.com/qemu-project/qemu/-/issues/540
+Resolves: https://gitlab.com/qemu-project/qemu/-/issues/541
+Resolves: https://gitlab.com/qemu-project/qemu/-/issues/556
+Resolves: https://gitlab.com/qemu-project/qemu/-/issues/557
+Resolves: https://gitlab.com/qemu-project/qemu/-/issues/827
+Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1282
+Resolves: CVE-2023-0330
+
+Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
+Reviewed-by: Thomas Huth <thuth@redhat.com>
+Message-Id: <20230427211013.2994127-2-alxndr@bu.edu>
+[thuth: Replace warn_report() with warn_report_once()]
+Signed-off-by: Thomas Huth <thuth@redhat.com>
+(cherry-picked from commit a2e1753b8054344f32cf94f31c6399a58794a380)
+Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
+---
+ include/exec/memory.h  |  5 +++++
+ include/hw/qdev-core.h |  7 +++++++
+ softmmu/memory.c       | 16 ++++++++++++++++
+ 3 files changed, 28 insertions(+)
+
+diff --git a/include/exec/memory.h b/include/exec/memory.h
+index 15ade918ba..e45ce6061f 100644
+--- a/include/exec/memory.h
++++ b/include/exec/memory.h
+@@ -767,6 +767,8 @@ struct MemoryRegion {
+     bool is_iommu;
+     RAMBlock *ram_block;
+     Object *owner;
++    /* owner as TYPE_DEVICE. Used for re-entrancy checks in MR access hotpath */
++    DeviceState *dev;
+ 
+     const MemoryRegionOps *ops;
+     void *opaque;
+@@ -791,6 +793,9 @@ struct MemoryRegion {
+     unsigned ioeventfd_nb;
+     MemoryRegionIoeventfd *ioeventfds;
+     RamDiscardManager *rdm; /* Only for RAM */
++
++    /* For devices designed to perform re-entrant IO into their own IO MRs */
++    bool disable_reentrancy_guard;
+ };
+ 
+ struct IOMMUMemoryRegion {
+diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h
+index bd50ad5ee1..7623703943 100644
+--- a/include/hw/qdev-core.h
++++ b/include/hw/qdev-core.h
+@@ -162,6 +162,10 @@ struct NamedClockList {
+     QLIST_ENTRY(NamedClockList) node;
+ };
+ 
++typedef struct {
++    bool engaged_in_io;
++} MemReentrancyGuard;
++
+ /**
+  * DeviceState:
+  * @realized: Indicates whether the device has been fully constructed.
+@@ -194,6 +198,9 @@ struct DeviceState {
+     int alias_required_for_version;
+     ResettableState reset;
+     GSList *unplug_blockers;
++
++    /* Is the device currently in mmio/pio/dma? Used to prevent re-entrancy */
++    MemReentrancyGuard mem_reentrancy_guard;
+ };
+ 
+ struct DeviceListener {
+diff --git a/softmmu/memory.c b/softmmu/memory.c
+index b1a6cae6f5..b7b3386e9d 100644
+--- a/softmmu/memory.c
++++ b/softmmu/memory.c
+@@ -542,6 +542,18 @@ static MemTxResult access_with_adjusted_size(hwaddr addr,
+         access_size_max = 4;
+     }
+ 
++    /* Do not allow more than one simultaneous access to a device's IO Regions */
++    if (mr->dev && !mr->disable_reentrancy_guard &&
++        !mr->ram_device && !mr->ram && !mr->rom_device && !mr->readonly) {
++        if (mr->dev->mem_reentrancy_guard.engaged_in_io) {
++            warn_report_once("Blocked re-entrant IO on MemoryRegion: "
++                             "%s at addr: 0x%" HWADDR_PRIX,
++                             memory_region_name(mr), addr);
++            return MEMTX_ACCESS_ERROR;
++        }
++        mr->dev->mem_reentrancy_guard.engaged_in_io = true;
++    }
++
+     /* FIXME: support unaligned access? */
+     access_size = MAX(MIN(size, access_size_max), access_size_min);
+     access_mask = MAKE_64BIT_MASK(0, access_size * 8);
+@@ -556,6 +568,9 @@ static MemTxResult access_with_adjusted_size(hwaddr addr,
+                         access_mask, attrs);
+         }
+     }
++    if (mr->dev) {
++        mr->dev->mem_reentrancy_guard.engaged_in_io = false;
++    }
+     return r;
+ }
+ 
+@@ -1170,6 +1185,7 @@ static void memory_region_do_init(MemoryRegion *mr,
+     }
+     mr->name = g_strdup(name);
+     mr->owner = owner;
++    mr->dev = (DeviceState *) object_dynamic_cast(mr->owner, TYPE_DEVICE);
+     mr->ram_block = NULL;
+ 
+     if (name) {

debian/patches/extra/0006-lsi53c895a-disable-reentrancy-detection-for-script-R.patch

@@ -1,6 +1,6 @@
 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
 From: Alexander Bulekov <alxndr@bu.edu>
-Date: Mon, 13 Mar 2023 04:24:17 -0400
+Date: Thu, 27 Apr 2023 17:10:10 -0400
 Subject: [PATCH] lsi53c895a: disable reentrancy detection for script RAM
 
 As the code is designed to use the memory APIs to access the script ram,
@@ -10,6 +10,12 @@ In the future, ram_io may be converted from an IO to a proper RAM MemoryRegion.
 
 Reported-by: Fiona Ebner <f.ebner@proxmox.com>
 Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
+Reviewed-by: Thomas Huth <thuth@redhat.com>
+Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
+Message-Id: <20230427211013.2994127-6-alxndr@bu.edu>
+Signed-off-by: Thomas Huth <thuth@redhat.com>
+(cherry-picked from commit bfd6e7ae6a72b84e2eb9574f56e6ec037f05182c)
+Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
 ---
  hw/scsi/lsi53c895a.c | 6 ++++++
  1 file changed, 6 insertions(+)

debian/patches/extra/0007-bcm2835_property-disable-reentrancy-detection-for-io.patch

@@ -0,0 +1,37 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Alexander Bulekov <alxndr@bu.edu>
+Date: Thu, 27 Apr 2023 17:10:11 -0400
+Subject: [PATCH] bcm2835_property: disable reentrancy detection for iomem
+
+As the code is designed for re-entrant calls from bcm2835_property to
+bcm2835_mbox and back into bcm2835_property, mark iomem as
+reentrancy-safe.
+
+Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
+Reviewed-by: Thomas Huth <thuth@redhat.com>
+Message-Id: <20230427211013.2994127-7-alxndr@bu.edu>
+Signed-off-by: Thomas Huth <thuth@redhat.com>
+(cherry-picked from commit 985c4a4e547afb9573b6bd6843d20eb2c3d1d1cd)
+Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
+---
+ hw/misc/bcm2835_property.c | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/hw/misc/bcm2835_property.c b/hw/misc/bcm2835_property.c
+index 890ae7bae5..de056ea2df 100644
+--- a/hw/misc/bcm2835_property.c
++++ b/hw/misc/bcm2835_property.c
+@@ -382,6 +382,13 @@ static void bcm2835_property_init(Object *obj)
+ 
+     memory_region_init_io(&s->iomem, OBJECT(s), &bcm2835_property_ops, s,
+                           TYPE_BCM2835_PROPERTY, 0x10);
++
++    /*
++     * bcm2835_property_ops call into bcm2835_mbox, which in-turn reads from
++     * iomem. As such, mark iomem as re-entracy safe.
++     */
++    s->iomem.disable_reentrancy_guard = true;
++
+     sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->iomem);
+     sysbus_init_irq(SYS_BUS_DEVICE(s), &s->mbox_irq);
+ }

debian/patches/extra/0008-raven-disable-reentrancy-detection-for-iomem.patch

@@ -0,0 +1,35 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Alexander Bulekov <alxndr@bu.edu>
+Date: Thu, 27 Apr 2023 17:10:12 -0400
+Subject: [PATCH] raven: disable reentrancy detection for iomem
+
+As the code is designed for re-entrant calls from raven_io_ops to
+pci-conf, mark raven_io_ops as reentrancy-safe.
+
+Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
+Message-Id: <20230427211013.2994127-8-alxndr@bu.edu>
+Signed-off-by: Thomas Huth <thuth@redhat.com>
+(cherry-picked from commit 6dad5a6810d9c60ca320d01276f6133bbcfa1fc7)
+Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
+---
+ hw/pci-host/raven.c | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/hw/pci-host/raven.c b/hw/pci-host/raven.c
+index 072ffe3c5e..9a11ac4b2b 100644
+--- a/hw/pci-host/raven.c
++++ b/hw/pci-host/raven.c
+@@ -294,6 +294,13 @@ static void raven_pcihost_initfn(Object *obj)
+     memory_region_init(&s->pci_memory, obj, "pci-memory", 0x3f000000);
+     address_space_init(&s->pci_io_as, &s->pci_io, "raven-io");
+ 
++    /*
++     * Raven's raven_io_ops use the address-space API to access pci-conf-idx
++     * (which is also owned by the raven device). As such, mark the
++     * pci_io_non_contiguous as re-entrancy safe.
++     */
++    s->pci_io_non_contiguous.disable_reentrancy_guard = true;
++
+     /* CPU address space */
+     memory_region_add_subregion(address_space_mem, PCI_IO_BASE_ADDR,
+                                 &s->pci_io);

debian/patches/extra/0009-apic-disable-reentrancy-detection-for-apic-msi.patch

@@ -0,0 +1,36 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Alexander Bulekov <alxndr@bu.edu>
+Date: Thu, 27 Apr 2023 17:10:13 -0400
+Subject: [PATCH] apic: disable reentrancy detection for apic-msi
+
+As the code is designed for re-entrant calls to apic-msi, mark apic-msi
+as reentrancy-safe.
+
+Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
+Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
+Message-Id: <20230427211013.2994127-9-alxndr@bu.edu>
+Signed-off-by: Thomas Huth <thuth@redhat.com>
+(cherry-picked from commit 50795ee051a342c681a9b45671c552fbd6274db8)
+Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
+---
+ hw/intc/apic.c | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/hw/intc/apic.c b/hw/intc/apic.c
+index 20b5a94073..ac3d47d231 100644
+--- a/hw/intc/apic.c
++++ b/hw/intc/apic.c
+@@ -885,6 +885,13 @@ static void apic_realize(DeviceState *dev, Error **errp)
+     memory_region_init_io(&s->io_memory, OBJECT(s), &apic_io_ops, s, "apic-msi",
+                           APIC_SPACE_SIZE);
+ 
++    /*
++     * apic-msi's apic_mem_write can call into ioapic_eoi_broadcast, which can
++     * write back to apic-msi. As such mark the apic-msi region re-entrancy
++     * safe.
++     */
++    s->io_memory.disable_reentrancy_guard = true;
++
+     s->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, apic_timer, s);
+     local_apics[s->id] = s;
+ 

debian/patches/series

@@ -1,10 +1,12 @@
 extra/0001-monitor-qmp-fix-race-with-clients-disconnecting-earl.patch
-extra/0002-memory-prevent-dma-reentracy-issues.patch
+extra/0002-scsi-megasas-Internal-cdbs-have-16-byte-length.patch
-extra/0003-scsi-megasas-Internal-cdbs-have-16-byte-length.patch
+extra/0003-ide-avoid-potential-deadlock-when-draining-during-tr.patch
-extra/0004-ide-avoid-potential-deadlock-when-draining-during-tr.patch
+extra/0004-ui-return-NULL-when-getting-cursor-without-a-console.patch
-extra/0005-memory-Allow-disabling-re-entrancy-checking-per-MR.patch
+extra/0005-memory-prevent-dma-reentracy-issues.patch
 extra/0006-lsi53c895a-disable-reentrancy-detection-for-script-R.patch
-extra/0007-ui-return-NULL-when-getting-cursor-without-a-console.patch
+extra/0007-bcm2835_property-disable-reentrancy-detection-for-io.patch
+extra/0008-raven-disable-reentrancy-detection-for-iomem.patch
+extra/0009-apic-disable-reentrancy-detection-for-apic-msi.patch
 bitmap-mirror/0001-drive-mirror-add-support-for-sync-bitmap-mode-never.patch
 bitmap-mirror/0002-drive-mirror-add-support-for-conditional-and-always-.patch
 bitmap-mirror/0003-mirror-add-check-for-bitmap-mode-without-bitmap.patch