mgorny created this revision.
mgorny added reviewers: labath, krytarowski, emaste.
Herald added a subscriber: arichardson.
mgorny requested review of this revision.
Recognize FreeBSD vmcores (kernel core dumps) through OS ABI = 0xFF
+ ELF version = 0, and do not process them via the elf-core plugin.
While these files use ELF as a container format, they contain raw memory
dump rather than proper VM segments and therefore are not usable
to the elf-core plugin.
https://reviews.llvm.org/D114967
Files:
lldb/source/Plugins/Process/elf-core/ProcessElfCore.cpp
Index: lldb/source/Plugins/Process/elf-core/ProcessElfCore.cpp
===================================================================
--- lldb/source/Plugins/Process/elf-core/ProcessElfCore.cpp
+++ lldb/source/Plugins/Process/elf-core/ProcessElfCore.cpp
@@ -64,6 +64,10 @@
DataExtractor data(data_sp, lldb::eByteOrderLittle, 4);
lldb::offset_t data_offset = 0;
if (elf_header.Parse(data, &data_offset)) {
+ // Check whether we're dealing with a FreeBSD vmcore that needs
+ // to be handled via FreeBSDKernel plugin instead.
+ if (elf_header.e_ident[7] == 0xFF && elf_header.e_version == 0)
+ return process_sp;
if (elf_header.e_type == llvm::ELF::ET_CORE)
process_sp = std::make_shared<ProcessElfCore>(target_sp, listener_sp,
*crash_file);
Index: lldb/source/Plugins/Process/elf-core/ProcessElfCore.cpp
===================================================================
--- lldb/source/Plugins/Process/elf-core/ProcessElfCore.cpp
+++ lldb/source/Plugins/Process/elf-core/ProcessElfCore.cpp
@@ -64,6 +64,10 @@
DataExtractor data(data_sp, lldb::eByteOrderLittle, 4);
lldb::offset_t data_offset = 0;
if (elf_header.Parse(data, &data_offset)) {
+ // Check whether we're dealing with a FreeBSD vmcore that needs
+ // to be handled via FreeBSDKernel plugin instead.
+ if (elf_header.e_ident[7] == 0xFF && elf_header.e_version == 0)
+ return process_sp;
if (elf_header.e_type == llvm::ELF::ET_CORE)
process_sp = std::make_shared<ProcessElfCore>(target_sp, listener_sp,
*crash_file);
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