From: "Abdul Lateef Attar via groups.io" <AbdulLateef.Attar=amd.com@groups.io>
To: <devel@edk2.groups.io>
Cc: Abdul Lateef Attar <AbdulLateef.Attar@amd.com>,
Chasel Chiu <chasel.chiu@intel.com>,
Nate DeSimone <nathaniel.l.desimone@intel.com>,
Liming Gao <gaoliming@byosoft.com.cn>,
Eric Dong <eric.dong@intel.com>
Subject: [edk2-devel] [PATCH v1] MinPlatformPkg/Test: Fix DumpAcpiMadt infinite loop
Date: Mon, 22 Apr 2024 19:33:53 +0530 [thread overview]
Message-ID: <2c10c7f9d2f548cf05cb23639dffe7c6576412ac.1713794592.git.AbdulLateef.Attar@amd.com> (raw)
Update the MadtLen varaible before the next record is read,
to void infinite loop.
Cc: Chasel Chiu <chasel.chiu@intel.com>
Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Eric Dong <eric.dong@intel.com>
Signed-off-by: Abdul Lateef Attar <AbdulLateef.Attar@amd.com>
---
.../Test/Library/TestPointCheckLib/DxeCheckAcpiMadt.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/Platform/Intel/MinPlatformPkg/Test/Library/TestPointCheckLib/DxeCheckAcpiMadt.c b/Platform/Intel/MinPlatformPkg/Test/Library/TestPointCheckLib/DxeCheckAcpiMadt.c
index 7e29b47a0b..04cc6f963a 100644
--- a/Platform/Intel/MinPlatformPkg/Test/Library/TestPointCheckLib/DxeCheckAcpiMadt.c
+++ b/Platform/Intel/MinPlatformPkg/Test/Library/TestPointCheckLib/DxeCheckAcpiMadt.c
@@ -1,6 +1,7 @@
/** @file
Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
+Copyright (C) 2024 Advanced Micro Devices, Inc. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@@ -235,8 +236,9 @@ DumpAcpiMadt (
DEBUG ((DEBUG_INFO, "\n"));
break;
}
- ApicStructHeader = (APIC_STRUCT_HEADER *)((UINT8 *)ApicStructHeader + ApicStructHeader->Length);
+ // Update MadtLen first to avoid the dead loop and system hang
MadtLen -= ApicStructHeader->Length;
+ ApicStructHeader = (APIC_STRUCT_HEADER *)((UINT8 *)ApicStructHeader + ApicStructHeader->Length);
}
}
@@ -324,8 +326,9 @@ CheckAcpiMadt (
default:
break;
}
- ApicStructHeader = (APIC_STRUCT_HEADER *)((UINT8 *)ApicStructHeader + ApicStructHeader->Length);
+ // Update MadtLen first to avoid the dead loop and system hang
MadtLen -= ApicStructHeader->Length;
+ ApicStructHeader = (APIC_STRUCT_HEADER *)((UINT8 *)ApicStructHeader + ApicStructHeader->Length);
}
return EFI_SUCCESS;
}
\ No newline at end of file
--
2.34.1
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next reply other threads:[~2024-04-22 14:04 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-22 14:03 Abdul Lateef Attar via groups.io [this message]
2024-05-09 19:19 ` [edk2-devel] [PATCH v1] MinPlatformPkg/Test: Fix DumpAcpiMadt infinite loop Nate DeSimone
2024-05-09 20:16 ` Nate DeSimone
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