Merging upstream version 7.0.18-dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

31 files changed, 204 insertions, 35 deletions

diff --git a/src/VBox/Devices/EFI/Firmware/BaseTools/Scripts/GetUtcDateTime.py b/src/VBox/Devices/EFI/Firmware/BaseTools/Scripts/GetUtcDateTime.py
index c23a3a10..c23a3a10 100755..100644
--- a/src/VBox/Devices/EFI/Firmware/BaseTools/Scripts/GetUtcDateTime.py
+++ b/src/VBox/Devices/EFI/Firmware/BaseTools/Scripts/GetUtcDateTime.py
diff --git a/src/VBox/Devices/EFI/Firmware/BaseTools/Scripts/PackageDocumentTools/plugins/EdkPlugins/basemodel/doxygen.py b/src/VBox/Devices/EFI/Firmware/BaseTools/Scripts/PackageDocumentTools/plugins/EdkPlugins/basemodel/doxygen.py
index b3198d5b..b3198d5b 100755..100644
--- a/src/VBox/Devices/EFI/Firmware/BaseTools/Scripts/PackageDocumentTools/plugins/EdkPlugins/basemodel/doxygen.py
+++ b/src/VBox/Devices/EFI/Firmware/BaseTools/Scripts/PackageDocumentTools/plugins/EdkPlugins/basemodel/doxygen.py
diff --git a/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/Common/BuildToolError.py b/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/Common/BuildToolError.py
index c0a3269b..c0a3269b 100755..100644
--- a/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/Common/BuildToolError.py
+++ b/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/Common/BuildToolError.py
diff --git a/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/CommonDataClass/Exceptions.py b/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/CommonDataClass/Exceptions.py
index c0b5e460..c0b5e460 100755..100644
--- a/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/CommonDataClass/Exceptions.py
+++ b/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/CommonDataClass/Exceptions.py
diff --git a/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/UPT/Logger/ToolError.py b/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/UPT/Logger/ToolError.py
index f4cf1989..f4cf1989 100755..100644
--- a/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/UPT/Logger/ToolError.py
+++ b/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/UPT/Logger/ToolError.py
diff --git a/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/UPT/UnitTest/InfBinarySectionTest.py b/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/UPT/UnitTest/InfBinarySectionTest.py
index 7f000648..7f000648 100644..100755
--- a/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/UPT/UnitTest/InfBinarySectionTest.py
+++ b/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/UPT/UnitTest/InfBinarySectionTest.py
diff --git a/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/tests/Split/test_split.py b/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/tests/Split/test_split.py
index 4e19e636..4e19e636 100755..100644
--- a/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/tests/Split/test_split.py
+++ b/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/tests/Split/test_split.py
diff --git a/src/VBox/Devices/EFI/Firmware/BaseTools/Tests/CToolsTests.py b/src/VBox/Devices/EFI/Firmware/BaseTools/Tests/CToolsTests.py
index e5e20f41..e5e20f41 100755..100644
--- a/src/VBox/Devices/EFI/Firmware/BaseTools/Tests/CToolsTests.py
+++ b/src/VBox/Devices/EFI/Firmware/BaseTools/Tests/CToolsTests.py
diff --git a/src/VBox/Devices/EFI/Firmware/BaseTools/Tests/CheckPythonSyntax.py b/src/VBox/Devices/EFI/Firmware/BaseTools/Tests/CheckPythonSyntax.py
index 29ed80b4..29ed80b4 100755..100644
--- a/src/VBox/Devices/EFI/Firmware/BaseTools/Tests/CheckPythonSyntax.py
+++ b/src/VBox/Devices/EFI/Firmware/BaseTools/Tests/CheckPythonSyntax.py
diff --git a/src/VBox/Devices/EFI/Firmware/BaseTools/Tests/PythonTest.py b/src/VBox/Devices/EFI/Firmware/BaseTools/Tests/PythonTest.py
index afe58534..afe58534 100755..100644
--- a/src/VBox/Devices/EFI/Firmware/BaseTools/Tests/PythonTest.py
+++ b/src/VBox/Devices/EFI/Firmware/BaseTools/Tests/PythonTest.py
diff --git a/src/VBox/Devices/EFI/Firmware/BaseTools/Tests/PythonToolsTests.py b/src/VBox/Devices/EFI/Firmware/BaseTools/Tests/PythonToolsTests.py
index a287f3a3..a287f3a3 100755..100644
--- a/src/VBox/Devices/EFI/Firmware/BaseTools/Tests/PythonToolsTests.py
+++ b/src/VBox/Devices/EFI/Firmware/BaseTools/Tests/PythonToolsTests.py
diff --git a/src/VBox/Devices/EFI/Firmware/CryptoPkg/Library/OpensslLib/process_files.pl b/src/VBox/Devices/EFI/Firmware/CryptoPkg/Library/OpensslLib/process_files.pl
index 5b0749fa..5b0749fa 100755..100644
--- a/src/VBox/Devices/EFI/Firmware/CryptoPkg/Library/OpensslLib/process_files.pl
+++ b/src/VBox/Devices/EFI/Firmware/CryptoPkg/Library/OpensslLib/process_files.pl
diff --git a/src/VBox/Devices/EFI/Firmware/IntelFsp2Pkg/Tools/Tests/test_yaml.py b/src/VBox/Devices/EFI/Firmware/IntelFsp2Pkg/Tools/Tests/test_yaml.py
index a71073ba..a71073ba 100755..100644
--- a/src/VBox/Devices/EFI/Firmware/IntelFsp2Pkg/Tools/Tests/test_yaml.py
+++ b/src/VBox/Devices/EFI/Firmware/IntelFsp2Pkg/Tools/Tests/test_yaml.py
diff --git a/src/VBox/Devices/EFI/FirmwareBin/VBoxEFI32.fd b/src/VBox/Devices/EFI/FirmwareBin/VBoxEFI32.fd
index 2c689d9b..16789a3b 100644
--- a/src/VBox/Devices/EFI/FirmwareBin/VBoxEFI32.fd
+++ b/src/VBox/Devices/EFI/FirmwareBin/VBoxEFI32.fd
diff --git a/src/VBox/Devices/EFI/FirmwareBin/VBoxEFI64.fd b/src/VBox/Devices/EFI/FirmwareBin/VBoxEFI64.fd
index e586a195..a11bbd1b 100644
--- a/src/VBox/Devices/EFI/FirmwareBin/VBoxEFI64.fd
+++ b/src/VBox/Devices/EFI/FirmwareBin/VBoxEFI64.fd
diff --git a/src/VBox/Devices/Graphics/BIOS/VBoxVgaBiosAlternative286.asm b/src/VBox/Devices/Graphics/BIOS/VBoxVgaBiosAlternative286.asm
index 0b83b579..0c156fb2 100644
--- a/src/VBox/Devices/Graphics/BIOS/VBoxVgaBiosAlternative286.asm
+++ b/src/VBox/Devices/Graphics/BIOS/VBoxVgaBiosAlternative286.asm
@@ -8281,7 +8281,7 @@ vesa_pm_end:                                 ; 0xc4754 LB 0x1
 section _DATA progbits vstart=0x4780 align=1 ; size=0x374d class=DATA group=DGROUP
   ; disGetNextSymbol 0xc4780 LB 0x374d -> off=0x0 cb=000000000000002f uValue=00000000000c0000 '_msg_vga_init'
 _msg_vga_init:                               ; 0xc4780 LB 0x2f
-    db  'Oracle VM VirtualBox Version 7.0.16 VGA BIOS', 00dh, 00ah, 000h
+    db  'Oracle VM VirtualBox Version 7.0.18 VGA BIOS', 00dh, 00ah, 000h
   ; disGetNextSymbol 0xc47af LB 0x371e -> off=0x0 cb=0000000000000080 uValue=00000000000c002f 'vga_modes'
 vga_modes:                                   ; 0xc47af LB 0x80
     db  000h, 000h, 000h, 004h, 000h, 0b8h, 0ffh, 002h, 001h, 000h, 000h, 004h, 000h, 0b8h, 0ffh, 002h
@@ -9212,7 +9212,7 @@ _vbebios_product_name:                       ; 0xc7e34 LB 0x21
     db  'Oracle VM VirtualBox VBE Adapter', 000h
   ; disGetNextSymbol 0xc7e55 LB 0x78 -> off=0x0 cb=0000000000000024 uValue=00000000000c36d5 '_vbebios_product_revision'
 _vbebios_product_revision:                   ; 0xc7e55 LB 0x24
-    db  'Oracle VM VirtualBox Version 7.0.16', 000h
+    db  'Oracle VM VirtualBox Version 7.0.18', 000h
   ; disGetNextSymbol 0xc7e79 LB 0x54 -> off=0x0 cb=000000000000002b uValue=00000000000c36f9 '_vbebios_info_string'
 _vbebios_info_string:                        ; 0xc7e79 LB 0x2b
     db  'VirtualBox VBE Display Adapter enabled', 00dh, 00ah, 00dh, 00ah, 000h
@@ -9247,4 +9247,4 @@ section CONST2 progbits vstart=0x7ece align=1 ; size=0x0 class=DATA group=DGROUP
     db  000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
     db  000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
     db  000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
-    db  000h, 0deh
+    db  000h, 0dah
diff --git a/src/VBox/Devices/Graphics/BIOS/VBoxVgaBiosAlternative286.md5sum b/src/VBox/Devices/Graphics/BIOS/VBoxVgaBiosAlternative286.md5sum
index 9d6aad04..5b04df55 100644
--- a/src/VBox/Devices/Graphics/BIOS/VBoxVgaBiosAlternative286.md5sum
+++ b/src/VBox/Devices/Graphics/BIOS/VBoxVgaBiosAlternative286.md5sum
@@ -1 +1 @@
-852353ec31d0749de1c385e91ab27511 *VBoxVgaBios286.rom
+a9f7b007aff3ce32ea3f5295bc1144ed *VBoxVgaBios286.rom
diff --git a/src/VBox/Devices/Graphics/BIOS/VBoxVgaBiosAlternative386.asm b/src/VBox/Devices/Graphics/BIOS/VBoxVgaBiosAlternative386.asm
index 12ea3360..b480612b 100644
--- a/src/VBox/Devices/Graphics/BIOS/VBoxVgaBiosAlternative386.asm
+++ b/src/VBox/Devices/Graphics/BIOS/VBoxVgaBiosAlternative386.asm
@@ -7735,7 +7735,7 @@ vesa_pm_end:                                 ; 0xc4754 LB 0x1
 section _DATA progbits vstart=0x4780 align=1 ; size=0x374d class=DATA group=DGROUP
   ; disGetNextSymbol 0xc4780 LB 0x374d -> off=0x0 cb=000000000000002f uValue=00000000000c0000 '_msg_vga_init'
 _msg_vga_init:                               ; 0xc4780 LB 0x2f
-    db  'Oracle VM VirtualBox Version 7.0.16 VGA BIOS', 00dh, 00ah, 000h
+    db  'Oracle VM VirtualBox Version 7.0.18 VGA BIOS', 00dh, 00ah, 000h
   ; disGetNextSymbol 0xc47af LB 0x371e -> off=0x0 cb=0000000000000080 uValue=00000000000c002f 'vga_modes'
 vga_modes:                                   ; 0xc47af LB 0x80
     db  000h, 000h, 000h, 004h, 000h, 0b8h, 0ffh, 002h, 001h, 000h, 000h, 004h, 000h, 0b8h, 0ffh, 002h
@@ -8666,7 +8666,7 @@ _vbebios_product_name:                       ; 0xc7e34 LB 0x21
     db  'Oracle VM VirtualBox VBE Adapter', 000h
   ; disGetNextSymbol 0xc7e55 LB 0x78 -> off=0x0 cb=0000000000000024 uValue=00000000000c36d5 '_vbebios_product_revision'
 _vbebios_product_revision:                   ; 0xc7e55 LB 0x24
-    db  'Oracle VM VirtualBox Version 7.0.16', 000h
+    db  'Oracle VM VirtualBox Version 7.0.18', 000h
   ; disGetNextSymbol 0xc7e79 LB 0x54 -> off=0x0 cb=000000000000002b uValue=00000000000c36f9 '_vbebios_info_string'
 _vbebios_info_string:                        ; 0xc7e79 LB 0x2b
     db  'VirtualBox VBE Display Adapter enabled', 00dh, 00ah, 00dh, 00ah, 000h
@@ -8701,4 +8701,4 @@ section CONST2 progbits vstart=0x7ece align=1 ; size=0x0 class=DATA group=DGROUP
     db  000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
     db  000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
     db  000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
-    db  000h, 053h
+    db  000h, 04fh
diff --git a/src/VBox/Devices/Graphics/BIOS/VBoxVgaBiosAlternative386.md5sum b/src/VBox/Devices/Graphics/BIOS/VBoxVgaBiosAlternative386.md5sum
index 5bbcac9e..62bbb895 100644
--- a/src/VBox/Devices/Graphics/BIOS/VBoxVgaBiosAlternative386.md5sum
+++ b/src/VBox/Devices/Graphics/BIOS/VBoxVgaBiosAlternative386.md5sum
@@ -1 +1 @@
-5fd5574a01aad6139078230edb9b0545 *VBoxVgaBios386.rom
+73c6f655de7140699ff561c5b01f3625 *VBoxVgaBios386.rom
diff --git a/src/VBox/Devices/Graphics/BIOS/VBoxVgaBiosAlternative8086.asm b/src/VBox/Devices/Graphics/BIOS/VBoxVgaBiosAlternative8086.asm
index 695ce11f..fbfc435c 100644
--- a/src/VBox/Devices/Graphics/BIOS/VBoxVgaBiosAlternative8086.asm
+++ b/src/VBox/Devices/Graphics/BIOS/VBoxVgaBiosAlternative8086.asm
@@ -8439,7 +8439,7 @@ vesa_pm_end:                                 ; 0xc4754 LB 0x1
 section _DATA progbits vstart=0x4780 align=1 ; size=0x374d class=DATA group=DGROUP
   ; disGetNextSymbol 0xc4780 LB 0x374d -> off=0x0 cb=000000000000002f uValue=00000000000c0000 '_msg_vga_init'
 _msg_vga_init:                               ; 0xc4780 LB 0x2f
-    db  'Oracle VM VirtualBox Version 7.0.16 VGA BIOS', 00dh, 00ah, 000h
+    db  'Oracle VM VirtualBox Version 7.0.18 VGA BIOS', 00dh, 00ah, 000h
   ; disGetNextSymbol 0xc47af LB 0x371e -> off=0x0 cb=0000000000000080 uValue=00000000000c002f 'vga_modes'
 vga_modes:                                   ; 0xc47af LB 0x80
     db  000h, 000h, 000h, 004h, 000h, 0b8h, 0ffh, 002h, 001h, 000h, 000h, 004h, 000h, 0b8h, 0ffh, 002h
@@ -9370,7 +9370,7 @@ _vbebios_product_name:                       ; 0xc7e34 LB 0x21
     db  'Oracle VM VirtualBox VBE Adapter', 000h
   ; disGetNextSymbol 0xc7e55 LB 0x78 -> off=0x0 cb=0000000000000024 uValue=00000000000c36d5 '_vbebios_product_revision'
 _vbebios_product_revision:                   ; 0xc7e55 LB 0x24
-    db  'Oracle VM VirtualBox Version 7.0.16', 000h
+    db  'Oracle VM VirtualBox Version 7.0.18', 000h
   ; disGetNextSymbol 0xc7e79 LB 0x54 -> off=0x0 cb=000000000000002b uValue=00000000000c36f9 '_vbebios_info_string'
 _vbebios_info_string:                        ; 0xc7e79 LB 0x2b
     db  'VirtualBox VBE Display Adapter enabled', 00dh, 00ah, 00dh, 00ah, 000h
@@ -9405,4 +9405,4 @@ section CONST2 progbits vstart=0x7ece align=1 ; size=0x0 class=DATA group=DGROUP
     db  000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
     db  000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
     db  000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h, 000h
-    db  000h, 01dh
+    db  000h, 019h
diff --git a/src/VBox/Devices/Graphics/BIOS/VBoxVgaBiosAlternative8086.md5sum b/src/VBox/Devices/Graphics/BIOS/VBoxVgaBiosAlternative8086.md5sum
index d19f9c05..1940a52f 100644
--- a/src/VBox/Devices/Graphics/BIOS/VBoxVgaBiosAlternative8086.md5sum
+++ b/src/VBox/Devices/Graphics/BIOS/VBoxVgaBiosAlternative8086.md5sum
@@ -1 +1 @@
-4d5fd4aad75f5b2295caecb11ca646b2 *VBoxVgaBios8086.rom
+0f0564e36ea2319f2e46b42b53b39e81 *VBoxVgaBios8086.rom
diff --git a/src/VBox/Devices/Network/DevVirtioNet.cpp b/src/VBox/Devices/Network/DevVirtioNet.cpp
index 66d2cbf1..336b3000 100644
--- a/src/VBox/Devices/Network/DevVirtioNet.cpp
+++ b/src/VBox/Devices/Network/DevVirtioNet.cpp
@@ -791,7 +791,11 @@ void virtioNetDumpGcPhysRxBuf(PPDMDEVINS pDevIns, PVIRTIONETPKTHDR pRxPktHdr,
 /**
  * @callback_method_impl{FNDBGFHANDLERDEV, virtio-net debugger info callback.}
  */
+#ifdef VIRTIO_REL_INFO_DUMP
+DECLCALLBACK(void) virtioNetR3Info(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *pszArgs)
+#else  /* !VIRTIO_REL_INFO_DUMP */
 static DECLCALLBACK(void) virtioNetR3Info(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *pszArgs)
+#endif /* !VIRTIO_REL_INFO_DUMP */
 {
     PVIRTIONET     pThis   = PDMDEVINS_2_DATA(pDevIns,  PVIRTIONET);
     PVIRTIONETCC   pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVIRTIONETCC);
@@ -904,7 +908,7 @@ static DECLCALLBACK(void) virtioNetR3Info(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp
         pHlp->pfnPrintf(pHlp, "    cVirtqPairs .,............. %d\n",   pThis->cVirtqPairs);
         pHlp->pfnPrintf(pHlp, "    cVirtqs .,................. %d\n",   pThis->cVirtqs);
         pHlp->pfnPrintf(pHlp, "    cWorkers .................. %d\n",   pThis->cWorkers);
-        pHlp->pfnPrintf(pHlp, "    MMIO mapping name ......... %d\n",   pThisCC->Virtio.szMmioName);
+        pHlp->pfnPrintf(pHlp, "    MMIO mapping name ......... %s\n",   pThisCC->Virtio.szMmioName);
         pHlp->pfnPrintf(pHlp, "\n");
     }
 
@@ -923,7 +927,7 @@ static DECLCALLBACK(void) virtioNetR3Info(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp
         pHlp->pfnPrintf(pHlp, "    Suppress multicast: ....... %s\n",      pThis->fNoMulticast   ? "true" : "false");
         pHlp->pfnPrintf(pHlp, "    Promiscuous: .............. %s\n",      pThis->fPromiscuous   ? "true" : "false");
         pHlp->pfnPrintf(pHlp, "\n");
-        pHlp->pfnPrintf(pHlp, "    Default Rx MAC filter: .... %RTmac\n", pThis->rxFilterMacDefault);
+        pHlp->pfnPrintf(pHlp, "    Default Rx MAC filter: .... %RTmac\n", &pThis->rxFilterMacDefault);
         pHlp->pfnPrintf(pHlp, "\n");
 
         pHlp->pfnPrintf(pHlp, "    Unicast filter MACs:\n");
@@ -3675,7 +3679,7 @@ static DECLCALLBACK(int) virtioNetR3Construct(PPDMDEVINS pDevIns, int iInstance,
      * Register the debugger info callback (ignore errors).
      */
     char szTmp[128];
-    rc = PDMDevHlpDBGFInfoRegister(pDevIns, "virtio-net", "Display virtio-net info (help, net, features, state, pointers, queues, all)", virtioNetR3Info);
+    rc = PDMDevHlpDBGFInfoRegister(pDevIns, "virtionet", "Display virtionet info (help, net, features, state, pointers, queues, all)", virtioNetR3Info);
     if (RT_FAILURE(rc))
         LogRel(("Failed to register DBGF info for device %s\n", szTmp));
     return rc;
diff --git a/src/VBox/Devices/Network/SrvIntNetR0.cpp b/src/VBox/Devices/Network/SrvIntNetR0.cpp
index 728cd25a..9e9d1757 100644
--- a/src/VBox/Devices/Network/SrvIntNetR0.cpp
+++ b/src/VBox/Devices/Network/SrvIntNetR0.cpp
@@ -2935,7 +2935,7 @@ static int intnetR0TrunkIfSendGsoFallback(PINTNETTRUNKIF pThis, PINTNETIF pIfSen
 
     union
     {
-        uint8_t     abBuf[sizeof(INTNETSG) + sizeof(INTNETSEG)];
+        uint8_t     abBuf[sizeof(INTNETSG) + 2 * sizeof(INTNETSEG)];
         INTNETSG    SG;
     } u;
 
diff --git a/src/VBox/Devices/PC/BIOS/VBoxBiosAlternative286.asm b/src/VBox/Devices/PC/BIOS/VBoxBiosAlternative286.asm
index 5b6da227..96b8e631 100644
--- a/src/VBox/Devices/PC/BIOS/VBoxBiosAlternative286.asm
+++ b/src/VBox/Devices/PC/BIOS/VBoxBiosAlternative286.asm
@@ -1621,7 +1621,7 @@ section CONST progbits vstart=0xf0 align=1 ; size=0xcda class=DATA group=DGROUP
 section CONST2 progbits vstart=0xdca align=1 ; size=0x3fa class=DATA group=DGROUP
   ; disGetNextSymbol 0xf0dca LB 0x3fa -> off=0x0 cb=0000000000000012 uValue=00000000000f0dca 'bios_cvs_version_string'
 bios_cvs_version_string:                     ; 0xf0dca LB 0x12
-    db  'VirtualBox 7.0.16', 000h
+    db  'VirtualBox 7.0.18', 000h
   ; disGetNextSymbol 0xf0ddc LB 0x3e8 -> off=0x0 cb=0000000000000008 uValue=00000000000f0ddc '_bios_prefix_string'
 _bios_prefix_string:                         ; 0xf0ddc LB 0x8
     db  'BIOS: ', 000h, 000h
@@ -19429,4 +19429,4 @@ biosorg_check_before_or_at_0FFEEh:           ; 0xfff80 LB 0x70
 cpu_reset:                                   ; 0xffff0 LB 0x10
     jmp far 0f000h:0e05bh                     ; ea 5b e0 00 f0              ; 0xffff0 orgs.asm:2114
   ; disGetNextSymbol 0xffff5 LB 0xb -> off=0xb cb=0000000000000000 uValue=0000000000100000 '_dummy_addr_0x100000'
-    db  030h, 036h, 02fh, 032h, 033h, 02fh, 039h, 039h, 000h, 0fch, 0d6h
+    db  030h, 036h, 02fh, 032h, 033h, 02fh, 039h, 039h, 000h, 0fch, 0d4h
diff --git a/src/VBox/Devices/PC/BIOS/VBoxBiosAlternative286.md5sum b/src/VBox/Devices/PC/BIOS/VBoxBiosAlternative286.md5sum
index 556bdbe3..8fb531ac 100644
--- a/src/VBox/Devices/PC/BIOS/VBoxBiosAlternative286.md5sum
+++ b/src/VBox/Devices/PC/BIOS/VBoxBiosAlternative286.md5sum
@@ -1 +1 @@
-574c2c72048d5a5c9c079fbf47683b0f *VBoxPcBios286.rom
+ad4d1a253850bc31cfa497722faafa3a *VBoxPcBios286.rom
diff --git a/src/VBox/Devices/PC/BIOS/VBoxBiosAlternative386.asm b/src/VBox/Devices/PC/BIOS/VBoxBiosAlternative386.asm
index a3231d00..85af1d40 100644
--- a/src/VBox/Devices/PC/BIOS/VBoxBiosAlternative386.asm
+++ b/src/VBox/Devices/PC/BIOS/VBoxBiosAlternative386.asm
@@ -1566,7 +1566,7 @@ section CONST progbits vstart=0xf0 align=1 ; size=0xd14 class=DATA group=DGROUP
 section CONST2 progbits vstart=0xe04 align=1 ; size=0x3fa class=DATA group=DGROUP
   ; disGetNextSymbol 0xf0e04 LB 0x3fa -> off=0x0 cb=0000000000000012 uValue=00000000000f0e04 'bios_cvs_version_string'
 bios_cvs_version_string:                     ; 0xf0e04 LB 0x12
-    db  'VirtualBox 7.0.16', 000h
+    db  'VirtualBox 7.0.18', 000h
   ; disGetNextSymbol 0xf0e16 LB 0x3e8 -> off=0x0 cb=0000000000000008 uValue=00000000000f0e16 '_bios_prefix_string'
 _bios_prefix_string:                         ; 0xf0e16 LB 0x8
     db  'BIOS: ', 000h, 000h
@@ -19195,4 +19195,4 @@ biosorg_check_before_or_at_0FFEEh:           ; 0xfff80 LB 0x70
 cpu_reset:                                   ; 0xffff0 LB 0x10
     jmp far 0f000h:0e05bh                     ; ea 5b e0 00 f0              ; 0xffff0 orgs.asm:2114
   ; disGetNextSymbol 0xffff5 LB 0xb -> off=0xb cb=0000000000000000 uValue=0000000000100000 '_dummy_addr_0x100000'
-    db  030h, 036h, 02fh, 032h, 033h, 02fh, 039h, 039h, 000h, 0fch, 034h
+    db  030h, 036h, 02fh, 032h, 033h, 02fh, 039h, 039h, 000h, 0fch, 032h
diff --git a/src/VBox/Devices/PC/BIOS/VBoxBiosAlternative386.md5sum b/src/VBox/Devices/PC/BIOS/VBoxBiosAlternative386.md5sum
index 80cc8e0a..9cb9bea8 100644
--- a/src/VBox/Devices/PC/BIOS/VBoxBiosAlternative386.md5sum
+++ b/src/VBox/Devices/PC/BIOS/VBoxBiosAlternative386.md5sum
@@ -1 +1 @@
-951bc82dd1a8482863248e9157928f1b *VBoxPcBios386.rom
+79eeb980dd6104d8bc534c8c7c4e877a *VBoxPcBios386.rom
diff --git a/src/VBox/Devices/PC/BIOS/VBoxBiosAlternative8086.asm b/src/VBox/Devices/PC/BIOS/VBoxBiosAlternative8086.asm
index 92665f77..80829ed2 100644
--- a/src/VBox/Devices/PC/BIOS/VBoxBiosAlternative8086.asm
+++ b/src/VBox/Devices/PC/BIOS/VBoxBiosAlternative8086.asm
@@ -1621,7 +1621,7 @@ section CONST progbits vstart=0xf0 align=1 ; size=0xcda class=DATA group=DGROUP
 section CONST2 progbits vstart=0xdca align=1 ; size=0x3fa class=DATA group=DGROUP
   ; disGetNextSymbol 0xf0dca LB 0x3fa -> off=0x0 cb=0000000000000012 uValue=00000000000f0dca 'bios_cvs_version_string'
 bios_cvs_version_string:                     ; 0xf0dca LB 0x12
-    db  'VirtualBox 7.0.16', 000h
+    db  'VirtualBox 7.0.18', 000h
   ; disGetNextSymbol 0xf0ddc LB 0x3e8 -> off=0x0 cb=0000000000000008 uValue=00000000000f0ddc '_bios_prefix_string'
 _bios_prefix_string:                         ; 0xf0ddc LB 0x8
     db  'BIOS: ', 000h, 000h
@@ -19906,4 +19906,4 @@ biosorg_check_before_or_at_0FFEEh:           ; 0xfff80 LB 0x70
 cpu_reset:                                   ; 0xffff0 LB 0x10
     jmp far 0f000h:0e05bh                     ; ea 5b e0 00 f0              ; 0xffff0 orgs.asm:2114
   ; disGetNextSymbol 0xffff5 LB 0xb -> off=0xb cb=0000000000000000 uValue=0000000000100000 '_dummy_addr_0x100000'
-    db  030h, 036h, 02fh, 032h, 033h, 02fh, 039h, 039h, 000h, 0fbh, 0bbh
+    db  030h, 036h, 02fh, 032h, 033h, 02fh, 039h, 039h, 000h, 0fbh, 0b9h
diff --git a/src/VBox/Devices/PC/BIOS/VBoxBiosAlternative8086.md5sum b/src/VBox/Devices/PC/BIOS/VBoxBiosAlternative8086.md5sum
index 95f06271..fc4dd6b7 100644
--- a/src/VBox/Devices/PC/BIOS/VBoxBiosAlternative8086.md5sum
+++ b/src/VBox/Devices/PC/BIOS/VBoxBiosAlternative8086.md5sum
@@ -1 +1 @@
-0704d20fb86b2ca3eba57b2ca2f9e135 *VBoxPcBios8086.rom
+bd634fab26a7c7e944a845a9415c8623 *VBoxPcBios8086.rom
diff --git a/src/VBox/Devices/VirtIO/VirtioCore.cpp b/src/VBox/Devices/VirtIO/VirtioCore.cpp
index 23ecf30c..f0ed6e42 100644
--- a/src/VBox/Devices/VirtIO/VirtioCore.cpp
+++ b/src/VBox/Devices/VirtIO/VirtioCore.cpp
@@ -618,6 +618,42 @@ bool virtioCoreR3VirtqIsEnabled(PVIRTIOCORE pVirtio, uint16_t uVirtqNbr)
     return (bool)pVirtq->uEnable && pVirtq->GCPhysVirtqDesc;
 }
 
+DECLINLINE(void) virtioCoreR3DescInfo(PCDBGFINFOHLP pHlp, PVIRTQ_DESC_T pDesc, uint16_t iDesc, const char *cszTail)
+{
+    if (pDesc->fFlags & VIRTQ_DESC_F_NEXT)
+        pHlp->pfnPrintf(pHlp, "          [%4d]%c%c %5d bytes @ %p  [%4d] %s\n",
+                        iDesc, pDesc->fFlags & VIRTQ_DESC_F_INDIRECT ? 'I' : ' ',
+                        pDesc->fFlags & VIRTQ_DESC_F_WRITE ? 'W' : 'R',
+                        pDesc->cb, pDesc->GCPhysBuf, pDesc->uDescIdxNext, cszTail);
+    else
+        pHlp->pfnPrintf(pHlp, "          [%4d]%c%c %5d bytes @ %p         %s\n",
+                        iDesc, pDesc->fFlags & VIRTQ_DESC_F_INDIRECT ? 'I' : ' ',
+                        pDesc->fFlags & VIRTQ_DESC_F_WRITE ? 'W' : 'R',
+                        pDesc->cb, pDesc->GCPhysBuf, cszTail);
+}
+
+#ifdef VIRTIO_REL_INFO_DUMP
+DECLHIDDEN(void) virtioCoreR3DumpAvailRing(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, PVIRTIOCORE pVirtio, PVIRTQUEUE pVirtq)
+{
+    uint16_t auTmp[VIRTQ_SIZE];
+    virtioCoreGCPhysRead(pVirtio, pDevIns,
+                         pVirtq->GCPhysVirtqAvail + RT_UOFFSETOF_DYN(VIRTQ_AVAIL_T, auRing[0]),
+                         auTmp, pVirtq->uQueueSize * sizeof(uint16_t));
+    pHlp->pfnPrintf(pHlp, "       avail ring dump:\n%.*RhXd\n", pVirtq->uQueueSize * sizeof(uint16_t), auTmp,
+                    pVirtq->GCPhysVirtqAvail + RT_UOFFSETOF_DYN(VIRTQ_AVAIL_T, auRing[0]));
+}
+
+DECLHIDDEN(void) virtioCoreR3DumpUsedRing(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, PVIRTIOCORE pVirtio, PVIRTQUEUE pVirtq)
+{
+    VIRTQ_USED_ELEM_T aTmp[VIRTQ_SIZE];
+    virtioCoreGCPhysRead(pVirtio, pDevIns,
+                         pVirtq->GCPhysVirtqUsed + RT_UOFFSETOF_DYN(VIRTQ_USED_T, aRing[0]),
+                         aTmp, pVirtq->uQueueSize * sizeof(VIRTQ_USED_ELEM_T));
+    pHlp->pfnPrintf(pHlp, "       used ring dump:\n%.*RhXd\n", pVirtq->uQueueSize * sizeof(VIRTQ_USED_ELEM_T), aTmp,
+                    pVirtq->GCPhysVirtqUsed + RT_UOFFSETOF_DYN(VIRTQ_USED_T, aRing[0]));
+}
+#endif /* VIRTIO_REL_INFO_DUMP */
+
 /** API Fuunction: See header file */
 void virtioCoreR3VirtqInfo(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *pszArgs, int uVirtq)
 {
@@ -634,9 +670,23 @@ void virtioCoreR3VirtqInfo(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *p
     uint16_t uUsedIdx        = virtioReadUsedRingIdx(pDevIns, pVirtio, pVirtq);
     uint16_t uUsedIdxShadow  = pVirtq->uUsedIdxShadow;
 
+    uint16_t uAvailEventIdx = 0;
+    uint16_t uUsedEventIdx = 0;
+    bool     fNotify = !!(pVirtio->uDriverFeatures & VIRTIO_F_EVENT_IDX);
+    if (fNotify)
+    {
+        uUsedEventIdx = virtioReadAvailUsedEvent(pDevIns, pVirtio, pVirtq);
+        /* There is no helper for reading AvailEvent since the device is not supposed to read it. */
+        virtioCoreGCPhysRead(pVirtio, pDevIns,
+                            pVirtq->GCPhysVirtqUsed
+                            + RT_UOFFSETOF_DYN(VIRTQ_USED_T, aRing[pVirtq->uQueueSize]),
+                            &uAvailEventIdx, sizeof(uAvailEventIdx));
+    }
+
 #ifdef VIRTIO_VBUF_ON_STACK
     VIRTQBUF_T VirtqBuf;
     PVIRTQBUF pVirtqBuf = &VirtqBuf;
+    RT_ZERO(VirtqBuf);  /* Make sure pSgPhysSend and pSgPhysReturn are initialized. */
 #else /* !VIRTIO_VBUF_ON_STACK */
     PVIRTQBUF pVirtqBuf = NULL;
 #endif /* !VIRTIO_VBUF_ON_STACK */
@@ -667,19 +717,19 @@ void virtioCoreR3VirtqInfo(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *p
         pHlp->pfnPrintf(pHlp, "       MSIX vector: ....... %4.4x\n", pVirtq->uMsixVector);
     pHlp->pfnPrintf(pHlp, "\n");
     pHlp->pfnPrintf(pHlp, "       avail ring (%d entries):\n", uAvailIdx - uAvailIdxShadow);
-    pHlp->pfnPrintf(pHlp, "          index: ................ %d\n", uAvailIdx);
-    pHlp->pfnPrintf(pHlp, "          shadow: ............... %d\n", uAvailIdxShadow);
+    pHlp->pfnPrintf(pHlp, "          index: ................ %d (%d)\n", pVirtq->uQueueSize ? uAvailIdx % pVirtq->uQueueSize : uAvailIdx, uAvailIdx);
+    pHlp->pfnPrintf(pHlp, "          shadow: ............... %d (%d)\n", pVirtq->uQueueSize ? uAvailIdxShadow % pVirtq->uQueueSize : uAvailIdxShadow, uAvailIdxShadow);
     pHlp->pfnPrintf(pHlp, "          flags: ................ %s\n", fAvailNoInterrupt ? "NO_INTERRUPT" : "");
     pHlp->pfnPrintf(pHlp, "\n");
-    pHlp->pfnPrintf(pHlp, "       used ring (%d entries):\n",  uUsedIdx - uUsedIdxShadow);
-    pHlp->pfnPrintf(pHlp, "          index: ................ %d\n", uUsedIdx);
-    pHlp->pfnPrintf(pHlp, "          shadow: ............... %d\n", uUsedIdxShadow);
+    pHlp->pfnPrintf(pHlp, "       used ring (%d entries):\n",  uUsedIdxShadow - uUsedIdx);
+    pHlp->pfnPrintf(pHlp, "          index: ................ %d (%d)\n", pVirtq->uQueueSize ? uUsedIdx % pVirtq->uQueueSize : uUsedIdx, uUsedIdx);
+    pHlp->pfnPrintf(pHlp, "          shadow: ............... %d (%d)\n", pVirtq->uQueueSize ? uUsedIdxShadow % pVirtq->uQueueSize : uUsedIdxShadow, uUsedIdxShadow);
     pHlp->pfnPrintf(pHlp, "          flags: ................ %s\n", fUsedNoNotify ? "NO_NOTIFY" : "");
     pHlp->pfnPrintf(pHlp, "\n");
     if (!fEmpty)
     {
         pHlp->pfnPrintf(pHlp, "       desc chain:\n");
-        pHlp->pfnPrintf(pHlp, "          head idx: ............. %d\n", uUsedIdx);
+        pHlp->pfnPrintf(pHlp, "          head idx: ............. %d (%d)\n", pVirtq->uQueueSize ? uUsedIdx % pVirtq->uQueueSize : uUsedIdx, uUsedIdx);
         pHlp->pfnPrintf(pHlp, "          segs: ................. %d\n", cSendSegs + cReturnSegs);
         pHlp->pfnPrintf(pHlp, "          refCnt ................ %d\n", pVirtqBuf->cRefs);
         pHlp->pfnPrintf(pHlp, "\n");
@@ -691,7 +741,7 @@ void virtioCoreR3VirtqInfo(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *p
             pHlp->pfnPrintf(pHlp, "             unsent ............. %d\n", pVirtqBuf->pSgPhysSend->cbSegLeft);
         }
         pHlp->pfnPrintf(pHlp, "\n");
-        pHlp->pfnPrintf(pHlp,     "      guest-to-host (%d bytes)\n",       pVirtqBuf->cbPhysReturn);
+        pHlp->pfnPrintf(pHlp,     "          guest-to-host (%d bytes):\n",  pVirtqBuf->cbPhysReturn);
         pHlp->pfnPrintf(pHlp,     "             segs: .............. %d\n", cReturnSegs);
         if (cReturnSegs)
         {
@@ -699,8 +749,77 @@ void virtioCoreR3VirtqInfo(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *p
             pHlp->pfnPrintf(pHlp, "             unsent ............. %d\n", pVirtqBuf->pSgPhysReturn->cbSegLeft);
         }
     } else
-        pHlp->pfnPrintf(pHlp,     "      No desc chains available\n");
+        pHlp->pfnPrintf(pHlp,     "       no desc chains available\n");
+    pHlp->pfnPrintf(pHlp, "\n");
+
+    /* Avoid handling zero-sized queues, there is nothing to show anyway. */
+    if (pVirtq->uQueueSize == 0)
+        return;
+
+    pHlp->pfnPrintf(pHlp, "       desc table:\n");
+    /*
+     * Each line in the descriptor table output consists of two parts: a fixed part and a variable "tail".
+     * The fixed part shows the descriptor index, its writability, size, physical address, and optionally
+     * which descriptor is next the chain. The tail shows which elements of avail/used rings point to
+     * this descriptor.
+     */
+    VIRTQ_DESC_T descTable[VIRTQ_SIZE];
+    char aszTails[VIRTQ_SIZE][32];
+    virtioCoreGCPhysRead(pVirtio, pDevIns, pVirtq->GCPhysVirtqDesc,
+                        &descTable, sizeof(VIRTQ_DESC_T) * pVirtq->uQueueSize);
+    RT_BZERO(aszTails, sizeof(aszTails));   /* No tails by default */
+
+    /* Fill avail tail fields. */
+
+    /* The first available descriptor gets outer reverse angle brackets. */
+    char chOuterLeft = '>', chOuterRight = '<';
+    char chLeft = '[', chRight = ']';
+    /* Use 'not-equal' instead of 'less' because of uint16_t wrapping! */
+    for (uint16_t i = uAvailIdxShadow; i != uAvailIdx; i++)
+    {
+        /* The last descriptor gets inner curly braces, inner square brackets for the rest. */
+        if (i + 1 == uAvailIdx) { chLeft = '{'; chRight = '}'; }
+        uint16_t uDescIdx = virtioReadAvailDescIdx(pDevIns, pVirtio, pVirtq, i);
+        /* Print an exclamation sign instead of outer right bracket if this descriptor triggers notification. */
+        RTStrPrintf(aszTails[uDescIdx], sizeof(aszTails[0]), "%c%c%4d%c%c ",
+                    chOuterLeft, chLeft, i % pVirtq->uQueueSize, chRight,
+                    fNotify ? ((i % pVirtq->uQueueSize) == (uAvailEventIdx % pVirtq->uQueueSize) ? '!' : chOuterRight) : chOuterRight);
+        chOuterLeft = chOuterRight = ' ';
+    }
+
+    /* Fill used tail fields, see comments in the similar loop above. */
+
+    chOuterLeft = '>'; chOuterRight = '<';
+    chLeft = '['; chRight = ']';
+    for (uint16_t i = uUsedIdx; i != uUsedIdxShadow; i++)
+    {
+        VIRTQ_USED_ELEM_T elem;
+        virtioCoreGCPhysRead(pVirtio, pDevIns,
+                             pVirtq->GCPhysVirtqUsed
+                             + RT_UOFFSETOF_DYN(VIRTQ_USED_T, aRing[i % pVirtq->uQueueSize]),
+                             &elem, sizeof(elem));
+        if (i + 1 == uUsedIdxShadow) { chLeft = '{'; chRight = '}'; }
+        char *szTail = aszTails[elem.uDescIdx % pVirtq->uQueueSize];
+        /* Add empty avail field if none is present, 9 spaces + terminating zero. */
+        if (*szTail == '\0')
+            RTStrCopy(szTail, 10, "          ");
+        RTStrPrintf(szTail + 9, sizeof(aszTails[0]) - 9, " %c%c%4d%c%c %d bytes",
+                    chOuterLeft, chLeft, i % pVirtq->uQueueSize, chRight,
+                    fNotify ? ((i % pVirtq->uQueueSize) == (uUsedEventIdx % pVirtq->uQueueSize) ? '!' : chOuterRight) : chOuterRight,
+                    elem.cbElem);
+        chOuterLeft = chOuterRight = ' ';
+    }
+
+    pHlp->pfnPrintf(pHlp, "          index w/r size         phys addr        next    @avail   @used\n");
+    pHlp->pfnPrintf(pHlp, "          ------ - -----------   ---------------- ------- -------- ------------------\n");
+    for (uint16_t i = 0; i < pVirtq->uQueueSize; i++)
+        virtioCoreR3DescInfo(pHlp, &descTable[i], i, aszTails[i]);
+#ifdef VIRTIO_REL_INFO_DUMP
     pHlp->pfnPrintf(pHlp, "\n");
+    virtioCoreR3DumpAvailRing(pDevIns, pHlp, pVirtio, pVirtq);
+    pHlp->pfnPrintf(pHlp, "\n");
+    virtioCoreR3DumpUsedRing(pDevIns, pHlp, pVirtio, pVirtq);
+#endif /* VIRTIO_REL_INFO_DUMP */
 }
 
 #ifdef VIRTIO_VBUF_ON_STACK
@@ -819,6 +938,46 @@ int virtioCoreR3VirtqAvailBufNext(PVIRTIOCORE pVirtio, uint16_t uVirtq)
     return VINF_SUCCESS;
 }
 
+#ifdef VIRTIO_REL_INFO_DUMP
+DECLCALLBACK(void) virtioNetR3Info(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *pszArgs);
+
+static DECLCALLBACK(void) dbgVirtio_Printf(PCDBGFINFOHLP pHlp, const char *pszFormat, ...)
+{
+    RT_NOREF(pHlp);
+    va_list va;
+    va_start(va, pszFormat);
+    RTLogRelPrintfV(pszFormat, va);
+    va_end(va);
+}
+
+
+static DECLCALLBACK(void) dbgVirtio_PrintfV(PCDBGFINFOHLP pHlp, const char *pszFormat, va_list args)
+{
+    RT_NOREF(pHlp);
+    RTLogRelPrintfV(pszFormat, args);
+}
+
+
+/**
+ * @interface_method_impl{DBGCCMDHLP,pfnGetDbgfOutputHlp}
+ */
+static void dbgVirtioDump(PPDMDEVINS pDevIns)
+{
+    PVIRTIOCORE pVirtio = PDMDEVINS_2_DATA(pDevIns, PVIRTIOCORE);
+    LogRel(("dbgVirtioDump(%s)", pVirtio->szInstance));
+    if (RTStrNCmp("virtio-net", pVirtio->szInstance, 10) == 0)
+    {
+        DBGFINFOHLP DbgHlp;
+
+        DbgHlp.pfnPrintf      = dbgVirtio_Printf;
+        DbgHlp.pfnPrintfV     = dbgVirtio_PrintfV;
+        DbgHlp.pfnGetOptError = NULL;
+
+        virtioNetR3Info(pDevIns, &DbgHlp, "a"); // Print everything!
+    }
+}
+
+#endif /* VIRTIO_REL_INFO_DUMP */
 /** API Function: See header file */
 #ifdef VIRTIO_VBUF_ON_STACK
 int virtioCoreR3VirtqAvailBufGet(PPDMDEVINS pDevIns, PVIRTIOCORE pVirtio, uint16_t uVirtq,
@@ -889,11 +1048,14 @@ int virtioCoreR3VirtqAvailBufGet(PPDMDEVINS pDevIns, PVIRTIOCORE pVirtio, uint16
             static volatile uint32_t s_cThreshold = 1;
             if (ASMAtomicIncU32(&s_cMessages) == ASMAtomicReadU32(&s_cThreshold))
             {
-                LogRelMax(64, ("Too many linked descriptors; check if the guest arranges descriptors in a loop (cSegsIn=%u cSegsOut=%u uQueueSize=%u).\n",
-                               cSegsIn, cSegsOut, pVirtq->uQueueSize));
+                LogRelMax(64, ("Too many linked descriptors; check if the guest arranges descriptors in a loop (cSegsIn=%u cSegsOut=%u uQueueSize=%u uDescIdx=%u queue=%s).\n",
+                               cSegsIn, cSegsOut, pVirtq->uQueueSize, uDescIdx, pVirtq->szName));
                 if (ASMAtomicReadU32(&s_cMessages) != 1)
                     LogRelMax(64, ("(the above error has occured %u times so far)\n", ASMAtomicReadU32(&s_cMessages)));
                 ASMAtomicWriteU32(&s_cThreshold, ASMAtomicReadU32(&s_cThreshold) * 10);
+#ifdef VIRTIO_REL_INFO_DUMP
+                dbgVirtioDump(pDevIns);
+#endif /* VIRTIO_REL_INFO_DUMP */
             }
             break;
         }
diff --git a/src/VBox/Devices/VirtIO/VirtioCore.h b/src/VBox/Devices/VirtIO/VirtioCore.h
index 00bcb43c..776ac969 100644
--- a/src/VBox/Devices/VirtIO/VirtioCore.h
+++ b/src/VBox/Devices/VirtIO/VirtioCore.h
@@ -32,6 +32,9 @@
 # pragma once
 #endif
 
+/* Some temporary printouts to release log in descriptor chain handling */
+//#define VIRTIO_REL_INFO_DUMP 1
+
 /* Do not allocate VIRTQBUF from the heap when possible */
 #define VIRTIO_VBUF_ON_STACK 1