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Baozeng via llvm-dev

2018-Aug-31 07:22 UTC

[llvm-dev] crash problem when using IndirectBrInst to replace BranchInst

With Debug mode, it shows the assert error:

Assertion failed: (I != BlockLiveness.end() && "Predecessor not
found"),
function calculateLocalLiveness, file lib/CodeGen/StackColoring.cpp, line
782.

1. <eof> parser at end of file
2. Code generation
3. Running pass 'Function Pass Manager' on module
'busybox/archival/libarchive/decompress_bunzip2.c'.
4. Running pass 'Merge disjoint stack slots' on function
'@read_bunzip'
clang: error: unable to execute command: Abort trap: 6
clang: error: clang frontend command failed due to signal (use -v to see
invocation)

It seems the block's predecessor is lost, any suggestion? Thanks.

mayuyu.io <admin at mayuyu.io> 于2018年8月30日周四 下午6:20写道：
> I suggest building LLVM in Debug mode and read the asserts
>
> Zhang
>
> 在 2018年8月30日，17:58，Baozeng via llvm-dev <llvm-dev at lists.llvm.org>
写道：
>
>
> Hello all,
>
>    I have written a pass, which replaces condition branchinst using
> indirectBr to obfuscate program.
>
>
> The origin IR is as the following:
>
>    br i1 %1, label %2, label %3
>
>
> And the transformed IR is as the follwoing:
>
>   %4 = select i1 %1, i8* blockaddress(@func, %2), i8* blockaddress(@func,
> %3)
>
>   indirectbr i8* %4, [label %2, label %3]
>
>
>
> The pass's core function is as the following:
>
>
>       BasicBlock *TrueDest = BI->getSuccessor(0);//BI is a conditional
> branch
>
>       BasicBlock *FalseDest = BI->getSuccessor(1);
>
>
>
>       BlockAddress * TrueDestAddr = BlockAddress::get(TrueDest);
>
>       BlockAddress * FalseDestAddr = BlockAddress::get(FalseDest);
>
>
>       Value * ConditionValue = BI->getCondition();
>
>
>
>       SelectInst * SI = SelectInst::Create(ConditionValue, TrueDestAddr,
> FalseDestAddr, "", BI);
>
>
>
>       IndirectBrInst *indirBr = IndirectBrInst::Create(SI, 2, BI);
>
>       indirBr->addDestination(TrueDest);
>
>       indirBr->addDestination(FalseDest);
>
>       BI->eraseFromParent();
>
>
> But I met the following crash when using this pass to build the arm
> target. The crash log is:
>
>
> Process:               clang [894]
>
> Path:                  /Users/USER/Library/Android/*/clang
>
> Identifier:            clang
>
> Version:               6.0.0 (6.0)
>
> Code Type:             X86-64 (Native)
>
> Parent Process:        clang [893]
>
> Responsible:           clang [894]
>
> User ID:               501
>
>
> Date/Time:             2018-08-30 17:31:27.215 +0800
>
> OS Version:            Mac OS X 10.13.6 (17G65)
>
> Report Version:        12
>
> Anonymous UUID:        EBCD2C91-4439-C1F4-B504-A32D567161A7
>
>
> Sleep/Wake UUID:       5EB83694-4FFE-458B-85E5-ABCD219ACB1E
>
>
> Time Awake Since Boot: 370000 seconds
>
> Time Since Wake:       17000 seconds
>
>
> System Integrity Protection: enabled
>
>
> Crashed Thread:        0  Dispatch queue: com.apple.main-thread
>
>
> Exception Type:        EXC_BAD_ACCESS (SIGBUS)
>
> Exception Codes:       KERN_PROTECTION_FAILURE at 0x000000010457c000
>
> Exception Note:        EXC_CORPSE_NOTIFY
>
>
> Termination Signal:    Bus error: 10
>
> Termination Reason:    Namespace SIGNAL, Code 0xa
>
> Terminating Process:   exc handler [0]
>
>
> VM Regions Near 0x10457c000:
>
>     MALLOC metadata        000000010457b000-000000010457c000 [    4K]
> rw-/rwx SM=ZER
>
> --> MALLOC guard page      000000010457c000-000000010457d000 [    4K]
> ---/rwx SM=ZER
>
>     MALLOC metadata        000000010457d000-0000000104581000 [   16K]
> rw-/rwx SM=ZER
>
>
> Application Specific Information:
>
> Stack dump:
>
> 0. Program arguments:
>
//Users/dingbaozeng/Library/Android/sdk/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang
> -cc1 -triple thumbv7-none-linux-android14 -emit-obj -mnoexecstack
> -disable-free -disable-llvm-verifier -discard-value-names -main-file-name
> bzip2.c -mrelocation-model pic -pic-level 1 -mthread-model posix
> -mdisable-fp-elim -fmath-errno -masm-verbose -mconstructor-aliases
> -munwind-tables -fuse-init-array -target-cpu generic -target-feature
> +soft-float-abi -target-feature -fp-only-sp -target-feature +d16
> -target-feature +vfp3 -target-feature -fp16 -target-feature -vfp4
> -target-feature -fp-armv8 -target-feature -neon -target-feature -crypto
> -target-abi aapcs-linux -mfloat-abi soft -fallow-half-arguments-and-returns
> -dwarf-column-info -debug-info-kind=limited -dwarf-version=4
> -debugger-tuning=gdb -target-linker-version 351.8 -ffunction-sections
> -coverage-notes-file
>
/Users/dingbaozeng/work/native_obfuscator/tests/./busybox//obj/local/armeabi-v7a/objs/busybox/archival/bzip2.gcno
> -resource-dir
>
//Users/dingbaozeng/Library/Android/sdk/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64/lib/clang/6.0.0
> -dependency-file
> ./busybox//obj/local/armeabi-v7a/objs/busybox/archival/bzip2.o.d -MT
> ./busybox//obj/local/armeabi-v7a/objs/busybox/archival/bzip2.o -MP -isystem
>
//Users/dingbaozeng/Library/Android/sdk/ndk-bundle/sysroot/usr/include/arm-linux-androideabi
> -D NDEBUG -I busybox/include -I busybox -D ANDROID -D
> BB_VER="1.28.4-topjohnwu" -D BB_BT=AUTOCONF_TIMESTAMP -D
__ANDROID_API__=14
> -isysroot //Users/dingbaozeng/Library/Android/sdk/ndk-bundle/sysroot
> -internal-isystem
>
//Users/dingbaozeng/Library/Android/sdk/ndk-bundle/sysroot/usr/local/include
> -internal-isystem
>
//Users/dingbaozeng/Library/Android/sdk/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64/lib/clang/6.0.0/include
> -internal-externc-isystem
> //Users/dingbaozeng/Library/Android/sdk/ndk-bundle/sysroot/include
> -internal-externc-isystem
> //Users/dingbaozeng/Library/Android/sdk/ndk-bundle/sysroot/usr/include -Os
> -Wno-invalid-command-line-argument -Wno-unused-command-line-argument
> -Wno-error=format-security -w -fdebug-compilation-dir
> /Users/dingbaozeng/work/native_obfuscator/tests -ferror-limit 19
> -fmessage-length 138 -femulated-tls -stack-protector 2 -fno-signed-char
> -fobjc-runtime=gcc -fdiagnostics-show-option -fcolor-diagnostics
> -vectorize-loops -vectorize-slp -mllvm -indibran -o
> ./busybox//obj/local/armeabi-v7a/objs/busybox/archival/bzip2.o -x c
> busybox/archival/bzip2.c
>
> 1. <eof> parser at end of file
>
> 2. Code generation
>
> 3. Running pass 'Function Pass Manager' on module
> 'busybox/archival/bzip2.c'.
>
> 4. Running pass 'Merge disjoint stack slots' on function
'@mainSort'
>
>
>
>
> Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
>
> 0   clang                          0x00000001011233c0 (anonymous
> namespace)::StackColoring::runOnMachineFunction(llvm::MachineFunction&)
+
> 8448
>
> 1   clang                          0x0000000100ff0746
> llvm::MachineFunctionPass::runOnFunction(llvm::Function&) + 134
>
> 2   clang                          0x000000010124cdd2
> llvm::FPPassManager::runOnFunction(llvm::Function&) + 546
>
> 3   clang                          0x000000010124cfe3
> llvm::FPPassManager::runOnModule(llvm::Module&) + 67
>
> 4   clang                          0x000000010124d458
> llvm::legacy::PassManagerImpl::run(llvm::Module&) + 888
>
> 5   clang                          0x00000001018d7f5b
> clang::EmitBackendOutput(clang::DiagnosticsEngine&,
> clang::HeaderSearchOptions const&, clang::CodeGenOptions const&,
> clang::TargetOptions const&, clang::LangOptions const&,
llvm::DataLayout
> const&, llvm::Module*, clang::BackendAction,
> std::__1::unique_ptr<llvm::raw_pwrite_stream,
> std::__1::default_delete<llvm::raw_pwrite_stream> >) + 14907
>
> 6   clang                          0x0000000101a9bc0f
> clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) + 959
>
> 7   clang                          0x000000010236d7e2
> clang::ParseAST(clang::Sema&, bool, bool) + 466
>
> 8   clang                          0x0000000101d038a3
> clang::FrontendAction::Execute() + 67
>
> 9   clang                          0x0000000101ca4878
> clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 1208
>
> 10  clang                          0x0000000101d4a0c5
> clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 4613
>
> 11  clang                          0x000000010083b865
> cc1_main(llvm::ArrayRef<char const*>, char const*, void*) + 1333
>
> 12  clang                          0x00000001008398e2 main + 11250
>
> 13  libdyld.dylib                  0x00007fff50a2e015 start + 1
>
>
> Thread 0 crashed with X86 Thread State (64-bit):
>
>   rax: 0x00000001053bc148  rbx: 0x0000000000000005  rcx:
> 0x000000000038c8cc  rdx: 0x000000010457c008
>
>   rdi: 0x00000000005044f1  rsi: 0x0000000000000000  rbp:
> 0x00007ffeef3c6cf0  rsp: 0x00007ffeef3c6910
>
>    r8: 0x0000000003000001   r9: 0x00000001039bdec0  r10:
> 0x0000000000000000  r11: 0x0000000000000007
>
>   r12: 0x00007fa712668450  r13: 0x00007ffeef3c6ba0  r14:
> 0x00007fa713a5ca00  r15: 0x00007fa712668468
>
>   rip: 0x00000001011233c0  rfl: 0x0000000000010246  cr2: 0x000000010457c000
>
>
>
> Logical CPU:     2
>
> Error Code:      0x00000004
>
> Trap Number:     14
>
>
>
> Binary Images:
>
>        0x100835000 -        0x103977ff7 +clang (6.0.0 - 6.0)
> <894457CA-21F3-318A-84F6-806AED47E3F6>
/Users/USER/Library/Android/*/clang
>
>        0x107ed8000 -        0x107f22acf  dyld (551.4)
> <8A72DE9C-A136-3506-AA02-4BA2B82DCAF3> /usr/lib/dyld
>
>     0x7fff4e20d000 -     0x7fff4e240ff7  libclosured.dylib (551.4)
> <3FB6B209-51F4-38DA-B1D8-2EE29D5BDD83>
/usr/lib/closure/libclosured.dylib
>
>     0x7fff4e747000 -     0x7fff4e748ffb  libSystem.B.dylib (1252.50.4)
> <CD555F3B-FDDB-35E5-A2FB-FBBF3D62031A> /usr/lib/libSystem.B.dylib
>
>     0x7fff4e97c000 -     0x7fff4e9d2fff  libc++.1.dylib (400.9)
> <7D3DACCC-3804-393C-ABC1-1A580FD00CB6> /usr/lib/libc++.1.dylib
>
>     0x7fff4e9d3000 -     0x7fff4e9f7ff7  libc++abi.dylib (400.8.2)
> <EF5E37D7-11D9-3530-BE45-B986612D13E2> /usr/lib/libc++abi.dylib
>
>     0x7fff4fa2b000 -     0x7fff4fa5bffb  libncurses.5.4.dylib (53)
> <030DF747-F71B-367A-83EE-2F30B7947929> /usr/lib/libncurses.5.4.dylib
>
>     0x7fff4fe00000 -     0x7fff501ee7e7  libobjc.A.dylib (723)
> <DD9E5EC5-B507-3249-B700-93433E2D5EDF> /usr/lib/libobjc.A.dylib
>
>     0x7fff50816000 -     0x7fff50828ffb  libz.1.dylib (70)
> <48C67CFC-940D-3857-8DAD-857774605352> /usr/lib/libz.1.dylib
>
>     0x7fff508c4000 -     0x7fff508c8ff7  libcache.dylib (80)
> <092479CB-1008-3A83-BECF-E115F24D13C1> /usr/lib/system/libcache.dylib
>
>     0x7fff508c9000 -     0x7fff508d3ff3  libcommonCrypto.dylib
> (60118.50.1) <029F5985-9B6E-3DCB-9B96-FD007678C6A7>
> /usr/lib/system/libcommonCrypto.dylib
>
>     0x7fff508d4000 -     0x7fff508dbfff  libcompiler_rt.dylib (62)
> <968B8E3F-3681-3230-9D78-BB8732024F6E>
/usr/lib/system/libcompiler_rt.dylib
>
>     0x7fff508dc000 -     0x7fff508e5ffb  libcopyfile.dylib (146.50.5)
> <3885083D-50D8-3EEC-B481-B2E605180D7F>
/usr/lib/system/libcopyfile.dylib
>
>     0x7fff508e6000 -     0x7fff5096bfff  libcorecrypto.dylib (562.70.1)
> <5C26364F-2269-31EC-84AF-0FED2C902E38>
/usr/lib/system/libcorecrypto.dylib
>
>     0x7fff509f3000 -     0x7fff50a2cff7  libdispatch.dylib (913.60.2)
> <232C69BD-022E-3AB9-8807-79F9FA7CB5EC>
/usr/lib/system/libdispatch.dylib
>
>     0x7fff50a2d000 -     0x7fff50a4aff7  libdyld.dylib (551.4)
> <81BF3A82-5719-3B54-ABA9-76C82D932CAC> /usr/lib/system/libdyld.dylib
>
>     0x7fff50a4b000 -     0x7fff50a4bffb  libkeymgr.dylib (28)
> <E34E283E-90FA-3C59-B48E-1277CDB9CDCE>
/usr/lib/system/libkeymgr.dylib
>
>     0x7fff50a59000 -     0x7fff50a59ff7  liblaunch.dylib (1205.70.9)
> <B184B521-FF24-3142-AFAF-23D170CF918C>
/usr/lib/system/liblaunch.dylib
>
>     0x7fff50a5a000 -     0x7fff50a5effb  libmacho.dylib (906)
> <1902A611-081A-3452-B11E-EBD1B166E831> /usr/lib/system/libmacho.dylib
>
>     0x7fff50a5f000 -     0x7fff50a61ff3  libquarantine.dylib (86)
> <26C0BA22-8F93-3A07-9A4E-C8D53D2CE42E>
/usr/lib/system/libquarantine.dylib
>
>     0x7fff50a62000 -     0x7fff50a63ff3  libremovefile.dylib (45)
> <711E18B2-5BBE-3211-A916-56740C27D17A>
/usr/lib/system/libremovefile.dylib
>
>     0x7fff50a64000 -     0x7fff50a7bfff  libsystem_asl.dylib (356.70.1)
> <39E46A6F-B228-3E78-B83E-1779F9707A39>
/usr/lib/system/libsystem_asl.dylib
>
>     0x7fff50a7c000 -     0x7fff50a7cfff  libsystem_blocks.dylib (67)
> <17303FDF-0D2D-3963-B05E-B4DF63052D47>
> /usr/lib/system/libsystem_blocks.dylib
>
>     0x7fff50a7d000 -     0x7fff50b06ff7  libsystem_c.dylib (1244.50.9)
> <1187BFE8-4576-3247-8177-481554E1F9E7>
/usr/lib/system/libsystem_c.dylib
>
>     0x7fff50b07000 -     0x7fff50b0affb  libsystem_configuration.dylib
> (963.50.8) <DF6B5287-203E-30CB-9947-78DF446C72B8>
> /usr/lib/system/libsystem_configuration.dylib
>
>     0x7fff50b0b000 -     0x7fff50b0effb  libsystem_coreservices.dylib (51)
> <486000D3-D8CB-3BE7-8EE5-8BF380DE6DF7>
> /usr/lib/system/libsystem_coreservices.dylib
>
>     0x7fff50b0f000 -     0x7fff50b10fff  libsystem_darwin.dylib
> (1244.50.9) <09C21A4A-9EE0-388B-A9D9-DFF8F6758791>
> /usr/lib/system/libsystem_darwin.dylib
>
>     0x7fff50b11000 -     0x7fff50b17ff7  libsystem_dnssd.dylib (878.70.2)
> <3290768B-54DE-3AB6-B155-AC0950AC5564>
/usr/lib/system/libsystem_dnssd.dylib
>
>     0x7fff50b18000 -     0x7fff50b61ff7  libsystem_info.dylib (517.30.1)
> <AB634A98-B8AA-3804-8436-38261FC8EC4D>
/usr/lib/system/libsystem_info.dylib
>
>     0x7fff50b62000 -     0x7fff50b88ff7  libsystem_kernel.dylib
> (4570.71.2) <F22B8D73-69D8-36D7-BF66-7F9AC70C08C2>
> /usr/lib/system/libsystem_kernel.dylib
>
>     0x7fff50b89000 -     0x7fff50bd4fcb  libsystem_m.dylib (3147.50.1)
> <8CFB51C9-B422-3379-8552-064C63943A23>
/usr/lib/system/libsystem_m.dylib
>
>     0x7fff50bd5000 -     0x7fff50bf4fff  libsystem_malloc.dylib (140.50.6)
> <7FD43735-9DDD-300E-8C4A-F909A74BDF49>
> /usr/lib/system/libsystem_malloc.dylib
>
>     0x7fff50bf5000 -     0x7fff50d25ff7  libsystem_network.dylib
> (1229.70.2) <5E86B2DE-9E15-3354-8714-4094ED5F698D>
> /usr/lib/system/libsystem_network.dylib
>
>     0x7fff50d26000 -     0x7fff50d30ffb  libsystem_networkextension.dylib
> (767.70.1) <D23EAFC1-E8BD-34D5-969C-6E45A1C3B4E4>
> /usr/lib/system/libsystem_networkextension.dylib
>
>     0x7fff50d31000 -     0x7fff50d3aff3  libsystem_notify.dylib (172)
> <08012EC0-2CD2-34BE-BF93-E7F56491299A>
> /usr/lib/system/libsystem_notify.dylib
>
>     0x7fff50d3b000 -     0x7fff50d42ff7  libsystem_platform.dylib
> (161.50.1) <6355EE2D-5456-3CA8-A227-B96E8F1E2AF8>
> /usr/lib/system/libsystem_platform.dylib
>
>     0x7fff50d43000 -     0x7fff50d4efff  libsystem_pthread.dylib
> (301.50.1) <0E51CCBA-91F2-34E1-BF2A-FEEFD3D321E4>
> /usr/lib/system/libsystem_pthread.dylib
>
>     0x7fff50d4f000 -     0x7fff50d52fff  libsystem_sandbox.dylib
> (765.70.1) <553DFCC6-9D31-3B9C-AB7C-30F6F265786D>
> /usr/lib/system/libsystem_sandbox.dylib
>
>     0x7fff50d53000 -     0x7fff50d54ff3  libsystem_secinit.dylib (30)
> <DE8D14E8-A276-3FF8-AE13-77F7040F33C1>
> /usr/lib/system/libsystem_secinit.dylib
>
>     0x7fff50d55000 -     0x7fff50d5cff7  libsystem_symptoms.dylib
> (820.60.2) <585BDFA2-D54D-39D0-8046-44E824DABD43>
> /usr/lib/system/libsystem_symptoms.dylib
>
>     0x7fff50d5d000 -     0x7fff50d70fff  libsystem_trace.dylib (829.70.1)
> <3A6CB706-8CA6-3616-8AFC-14AAD7FAF187>
/usr/lib/system/libsystem_trace.dylib
>
>     0x7fff50d72000 -     0x7fff50d77ff7  libunwind.dylib (35.3)
> <BEF3FB49-5604-3B5F-82B5-332B80023AC3>
/usr/lib/system/libunwind.dylib
>
>     0x7fff50d78000 -     0x7fff50da5ff7  libxpc.dylib (1205.70.9)
> <0BC7AD67-671D-31D4-8B88-C317B8379598> /usr/lib/system/libxpc.dylib
>
>
> External Modification Summary:
>
>   Calls made by other processes targeting this process:
>
>     task_for_pid: 0
>
>     thread_create: 0
>
>     thread_set_state: 0
>
>   Calls made by this process:
>
>     task_for_pid: 0
>
>     thread_create: 0
>
>     thread_set_state: 0
>
>   Calls made by all processes on this machine:
>
>     task_for_pid: 227609
>
>     thread_create: 0
>
>     thread_set_state: 0
>
>
> VM Region Summary:
>
> ReadOnly portion of Libraries: Total=260.6M resident=0K(0%)
> swapped_out_or_unallocated=260.6M(100%)
>
> Writable regions: Total=142.7M written=0K(0%) resident=0K(0%)
> swapped_out=0K(0%) unallocated=142.7M(100%)
>
>
>
>                                 VIRTUAL   REGION
>
> REGION TYPE                        SIZE    COUNT (non-coalesced)
>
> ===========                     =======  ======>
> Kernel Alloc Once                    8K        2
>
> MALLOC                            78.2M       16
>
> MALLOC guard page                   16K        5
>
> STACK GUARD                          4K        2
>
> Stack                             64.0M        2
>
> __DATA                            5224K       45
>
> __LINKEDIT                       201.9M        4
>
> __TEXT                            58.8M       44
>
> mapped file                        444K        9
>
> shared memory                        8K        3
>
> ===========                     =======  ======>
> TOTAL                            408.4M      122
>
>
>
> any suggestion? Thank you.
> --
>      Best Regards,
>      Baozeng Ding
>
>
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
>
-- 
     Best Regards,
     Baozeng Ding
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Friedman, Eli via llvm-dev

2018-Aug-31 17:59 UTC

head link

[llvm-dev] crash problem when using IndirectBrInst to replace BranchInst

That looks like https://bugs.llvm.org/show_bug.cgi?id=37130 .

-Eli

On 8/31/2018 12:22 AM, Baozeng via llvm-dev wrote:> With Debug mode, it shows the assert error:
>
> Assertion failed: (I != BlockLiveness.end() && "Predecessor
not
> found"), function calculateLocalLiveness, file 
> lib/CodeGen/StackColoring.cpp, line 782.
>
> 1.<eof> parser at end of file
> 2.Code generation
> 3.Running pass 'Function Pass Manager' on module 
> 'busybox/archival/libarchive/decompress_bunzip2.c'.
> 4.Running pass 'Merge disjoint stack slots' on function
'@read_bunzip'
> clang: error: unable to execute command: Abort trap: 6
> clang: error: clang frontend command failed due to signal (use -v to 
> see invocation)
>
> It seems the block's predecessor is lost, any suggestion? Thanks.
>
> mayuyu.io <http://mayuyu.io> <admin at mayuyu.io 
> <mailto:admin at mayuyu.io>> 于2018年8月30日周四 下午6:20写道：
>
>     I suggest building LLVM in Debug mode and read the asserts
>
>     Zhang
>
>     在 2018年8月30日，17:58，Baozeng via llvm-dev <llvm-dev at lists.llvm.org
>     <mailto:llvm-dev at lists.llvm.org>> 写道：
>
>>
>>     Hello all,
>>
>>        I have written a pass, which replaces condition branchinst
>>     using indirectBr to obfuscate program.
>>
>>
>>     The origin IR is as the following:
>>
>>     br i1 %1, label %2, label %3
>>
>>
>>     And the transformed IR is as the follwoing:
>>
>>     %4 = select i1 %1, i8* blockaddress(@func, %2), i8*
>>     blockaddress(@func, %3)
>>
>>     indirectbr i8* %4, [label %2, label %3]
>>
>>
>>
>>     The pass's core function is as the following:
>>
>>
>>         BasicBlock *TrueDest = BI->getSuccessor(0);//BI is a
>>     conditional branch
>>
>>     BasicBlock *FalseDest = BI->getSuccessor(1);
>>
>>     BlockAddress * TrueDestAddr = BlockAddress::get(TrueDest);
>>
>>     BlockAddress * FalseDestAddr = BlockAddress::get(FalseDest);
>>
>>
>>     Value * ConditionValue = BI->getCondition();
>>
>>           SelectInst * SI = SelectInst::Create(ConditionValue,
>>     TrueDestAddr, FalseDestAddr, "", BI);
>>
>>         IndirectBrInst *indirBr = IndirectBrInst::Create(SI, 2, BI);
>>
>>     indirBr->addDestination(TrueDest);
>>
>>     indirBr->addDestination(FalseDest);
>>
>>     BI->eraseFromParent();
>>
>>
>>     But I met the following crash when using this pass to build the
>>     arm target. The crash log is:
>>
>>
>>     Process:              clang [894]
>>
>>     Path: /Users/USER/Library/Android/*/clang
>>
>>     Identifier:           clang
>>
>>     Version:              6.0.0 (6.0)
>>
>>     Code Type:             X86-64 (Native)
>>
>>     Parent Process:        clang [893]
>>
>>     Responsible:          clang [894]
>>
>>     User ID:               501
>>
>>
>>     Date/Time:            2018-08-30 17:31:27.215 +0800
>>
>>     OS Version:            Mac OS X 10.13.6 (17G65)
>>
>>     Report Version:        12
>>
>>     Anonymous UUID: EBCD2C91-4439-C1F4-B504-A32D567161A7
>>
>>
>>     Sleep/Wake UUID:  5EB83694-4FFE-458B-85E5-ABCD219ACB1E
>>
>>
>>     Time Awake Since Boot: 370000 seconds
>>
>>     Time Since Wake:       17000 seconds
>>
>>
>>     System Integrity Protection: enabled
>>
>>
>>     Crashed Thread:        0  Dispatch queue: com.apple.main-thread
>>
>>
>>     Exception Type:        EXC_BAD_ACCESS (SIGBUS)
>>
>>     Exception Codes:       KERN_PROTECTION_FAILURE at
0x000000010457c000
>>
>>     Exception Note:        EXC_CORPSE_NOTIFY
>>
>>
>>     Termination Signal:    Bus error: 10
>>
>>     Termination Reason:    Namespace SIGNAL, Code 0xa
>>
>>     Terminating Process:   exc handler [0]
>>
>>
>>     VM Regions Near 0x10457c000:
>>
>>       MALLOC metadata 000000010457b000-000000010457c000 [    4K]
>>     rw-/rwx SM=ZER
>>
>>     --> MALLOC guard page 000000010457c000-000000010457d000 [    4K]
>>     ---/rwx SM=ZER
>>
>>       MALLOC metadata 000000010457d000-0000000104581000 [   16K]
>>     rw-/rwx SM=ZER
>>
>>
>>     Application Specific Information:
>>
>>     Stack dump:
>>
>>     0.Program arguments:
>>    
//Users/dingbaozeng/Library/Android/sdk/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang
>>     -cc1 -triple thumbv7-none-linux-android14 -emit-obj -mnoexecstack
>>     -disable-free -disable-llvm-verifier -discard-value-names
>>     -main-file-name bzip2.c -mrelocation-model pic -pic-level 1
>>     -mthread-model posix -mdisable-fp-elim -fmath-errno -masm-verbose
>>     -mconstructor-aliases -munwind-tables -fuse-init-array
>>     -target-cpu generic -target-feature +soft-float-abi
>>     -target-feature -fp-only-sp -target-feature +d16 -target-feature
>>     +vfp3 -target-feature -fp16 -target-feature -vfp4 -target-feature
>>     -fp-armv8 -target-feature -neon -target-feature -crypto
>>     -target-abi aapcs-linux -mfloat-abi soft
>>     -fallow-half-arguments-and-returns -dwarf-column-info
>>     -debug-info-kind=limited -dwarf-version=4 -debugger-tuning=gdb
>>     -target-linker-version 351.8 -ffunction-sections
>>     -coverage-notes-file
>>    
/Users/dingbaozeng/work/native_obfuscator/tests/./busybox//obj/local/armeabi-v7a/objs/busybox/archival/bzip2.gcno
>>     -resource-dir
>>    
//Users/dingbaozeng/Library/Android/sdk/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64/lib/clang/6.0.0
>>     -dependency-file
>>     ./busybox//obj/local/armeabi-v7a/objs/busybox/archival/bzip2.o.d
>>     -MT
>>     ./busybox//obj/local/armeabi-v7a/objs/busybox/archival/bzip2.o
>>     -MP -isystem
>>    
//Users/dingbaozeng/Library/Android/sdk/ndk-bundle/sysroot/usr/include/arm-linux-androideabi
>>     -D NDEBUG -I busybox/include -I busybox -D ANDROID -D
>>     BB_VER="1.28.4-topjohnwu" -D BB_BT=AUTOCONF_TIMESTAMP -D
>>     __ANDROID_API__=14 -isysroot
>>     //Users/dingbaozeng/Library/Android/sdk/ndk-bundle/sysroot
>>     -internal-isystem
>>    
//Users/dingbaozeng/Library/Android/sdk/ndk-bundle/sysroot/usr/local/include
>>     -internal-isystem
>>    
//Users/dingbaozeng/Library/Android/sdk/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64/lib/clang/6.0.0/include
>>     -internal-externc-isystem
>>     //Users/dingbaozeng/Library/Android/sdk/ndk-bundle/sysroot/include
>>     -internal-externc-isystem
>>    
//Users/dingbaozeng/Library/Android/sdk/ndk-bundle/sysroot/usr/include
>>     -Os -Wno-invalid-command-line-argument
>>     -Wno-unused-command-line-argument -Wno-error=format-security -w
>>     -fdebug-compilation-dir
>>     /Users/dingbaozeng/work/native_obfuscator/tests -ferror-limit 19
>>     -fmessage-length 138 -femulated-tls -stack-protector 2
>>     -fno-signed-char -fobjc-runtime=gcc -fdiagnostics-show-option
>>     -fcolor-diagnostics -vectorize-loops -vectorize-slp -mllvm
>>     -indibran -o
>>     ./busybox//obj/local/armeabi-v7a/objs/busybox/archival/bzip2.o -x
>>     c busybox/archival/bzip2.c
>>
>>     1.<eof> parser at end of file
>>
>>     2.Code generation
>>
>>     3.Running pass 'Function Pass Manager' on module
>>     'busybox/archival/bzip2.c'.
>>
>>     4.Running pass 'Merge disjoint stack slots' on function
'@mainSort'
>>
>>
>>     Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
>>
>>     0  clang 0x00000001011233c0 (anonymous
>>    
namespace)::StackColoring::runOnMachineFunction(llvm::MachineFunction&)
>>     + 8448
>>
>>     1  clang 0x0000000100ff0746
>>     llvm::MachineFunctionPass::runOnFunction(llvm::Function&) + 134
>>
>>     2  clang 0x000000010124cdd2
>>     llvm::FPPassManager::runOnFunction(llvm::Function&) + 546
>>
>>     3  clang 0x000000010124cfe3
>>     llvm::FPPassManager::runOnModule(llvm::Module&) + 67
>>
>>     4  clang 0x000000010124d458
>>     llvm::legacy::PassManagerImpl::run(llvm::Module&) + 888
>>
>>     5  clang 0x00000001018d7f5b
>>     clang::EmitBackendOutput(clang::DiagnosticsEngine&,
>>     clang::HeaderSearchOptions const&, clang::CodeGenOptions
const&,
>>     clang::TargetOptions const&, clang::LangOptions const&,
>>     llvm::DataLayout const&, llvm::Module*, clang::BackendAction,
>>     std::__1::unique_ptr<llvm::raw_pwrite_stream,
>>     std::__1::default_delete<llvm::raw_pwrite_stream> >) +
14907
>>
>>     6  clang 0x0000000101a9bc0f
>>    
clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&)
>>     + 959
>>
>>     7  clang 0x000000010236d7e2 clang::ParseAST(clang::Sema&, bool,
>>     bool) + 466
>>
>>     8  clang 0x0000000101d038a3 clang::FrontendAction::Execute() + 67
>>
>>     9  clang 0x0000000101ca4878
>>     clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
+ 1208
>>
>>     10 clang 0x0000000101d4a0c5
>>     clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 4613
>>
>>     11 clang 0x000000010083b865 cc1_main(llvm::ArrayRef<char
const*>,
>>     char const*, void*) + 1333
>>
>>     12 clang 0x00000001008398e2 main + 11250
>>
>>     13 libdyld.dylib 0x00007fff50a2e015 start + 1
>>
>>
>>     Thread 0 crashed with X86 Thread State (64-bit):
>>
>>     rax: 0x00000001053bc148  rbx: 0x0000000000000005  rcx:
>>     0x000000000038c8cc rdx: 0x000000010457c008
>>
>>     rdi: 0x00000000005044f1  rsi: 0x0000000000000000  rbp:
>>     0x00007ffeef3c6cf0 rsp: 0x00007ffeef3c6910
>>
>>      r8: 0x0000000003000001   r9: 0x00000001039bdec0  r10:
>>     0x0000000000000000 r11: 0x0000000000000007
>>
>>     r12: 0x00007fa712668450  r13: 0x00007ffeef3c6ba0  r14:
>>     0x00007fa713a5ca00 r15: 0x00007fa712668468
>>
>>     rip: 0x00000001011233c0  rfl: 0x0000000000010246  cr2:
>>     0x000000010457c000
>>
>>     Logical CPU:     2
>>
>>     Error Code:      0x00000004
>>
>>     Trap Number:     14
>>
>>
>>
>>     Binary Images:
>>
>>          0x100835000 -        0x103977ff7 +clang (6.0.0 - 6.0)
>>     <894457CA-21F3-318A-84F6-806AED47E3F6>
>>     /Users/USER/Library/Android/*/clang
>>
>>          0x107ed8000 -        0x107f22acf  dyld (551.4)
>>     <8A72DE9C-A136-3506-AA02-4BA2B82DCAF3> /usr/lib/dyld
>>
>>       0x7fff4e20d000 -     0x7fff4e240ff7 libclosured.dylib (551.4)
>>     <3FB6B209-51F4-38DA-B1D8-2EE29D5BDD83>
>>     /usr/lib/closure/libclosured.dylib
>>
>>       0x7fff4e747000 -     0x7fff4e748ffb libSystem.B.dylib
>>     (1252.50.4) <CD555F3B-FDDB-35E5-A2FB-FBBF3D62031A>
>>     /usr/lib/libSystem.B.dylib
>>
>>       0x7fff4e97c000 -     0x7fff4e9d2fff libc++.1.dylib (400.9)
>>     <7D3DACCC-3804-393C-ABC1-1A580FD00CB6>
/usr/lib/libc++.1.dylib
>>
>>       0x7fff4e9d3000 -     0x7fff4e9f7ff7 libc++abi.dylib (400.8.2)
>>     <EF5E37D7-11D9-3530-BE45-B986612D13E2>
/usr/lib/libc++abi.dylib
>>
>>       0x7fff4fa2b000 -     0x7fff4fa5bffb libncurses.5.4.dylib (53)
>>     <030DF747-F71B-367A-83EE-2F30B7947929>
/usr/lib/libncurses.5.4.dylib
>>
>>       0x7fff4fe00000 -     0x7fff501ee7e7 libobjc.A.dylib (723)
>>     <DD9E5EC5-B507-3249-B700-93433E2D5EDF>
/usr/lib/libobjc.A.dylib
>>
>>       0x7fff50816000 -     0x7fff50828ffb libz.1.dylib (70)
>>     <48C67CFC-940D-3857-8DAD-857774605352> /usr/lib/libz.1.dylib
>>
>>       0x7fff508c4000 -     0x7fff508c8ff7 libcache.dylib (80)
>>     <092479CB-1008-3A83-BECF-E115F24D13C1>
/usr/lib/system/libcache.dylib
>>
>>       0x7fff508c9000 -     0x7fff508d3ff3 libcommonCrypto.dylib
>>     (60118.50.1) <029F5985-9B6E-3DCB-9B96-FD007678C6A7>
>>     /usr/lib/system/libcommonCrypto.dylib
>>
>>       0x7fff508d4000 -     0x7fff508dbfff libcompiler_rt.dylib (62)
>>     <968B8E3F-3681-3230-9D78-BB8732024F6E>
>>     /usr/lib/system/libcompiler_rt.dylib
>>
>>       0x7fff508dc000 -     0x7fff508e5ffb libcopyfile.dylib
>>     (146.50.5) <3885083D-50D8-3EEC-B481-B2E605180D7F>
>>     /usr/lib/system/libcopyfile.dylib
>>
>>       0x7fff508e6000 -     0x7fff5096bfff libcorecrypto.dylib
>>     (562.70.1) <5C26364F-2269-31EC-84AF-0FED2C902E38>
>>     /usr/lib/system/libcorecrypto.dylib
>>
>>       0x7fff509f3000 -     0x7fff50a2cff7 libdispatch.dylib
>>     (913.60.2) <232C69BD-022E-3AB9-8807-79F9FA7CB5EC>
>>     /usr/lib/system/libdispatch.dylib
>>
>>       0x7fff50a2d000 -     0x7fff50a4aff7 libdyld.dylib (551.4)
>>     <81BF3A82-5719-3B54-ABA9-76C82D932CAC>
/usr/lib/system/libdyld.dylib
>>
>>       0x7fff50a4b000 -     0x7fff50a4bffb libkeymgr.dylib (28)
>>     <E34E283E-90FA-3C59-B48E-1277CDB9CDCE>
>>     /usr/lib/system/libkeymgr.dylib
>>
>>       0x7fff50a59000 -     0x7fff50a59ff7 liblaunch.dylib (1205.70.9)
>>     <B184B521-FF24-3142-AFAF-23D170CF918C>
>>     /usr/lib/system/liblaunch.dylib
>>
>>       0x7fff50a5a000 -     0x7fff50a5effb libmacho.dylib (906)
>>     <1902A611-081A-3452-B11E-EBD1B166E831>
/usr/lib/system/libmacho.dylib
>>
>>       0x7fff50a5f000 -     0x7fff50a61ff3 libquarantine.dylib (86)
>>     <26C0BA22-8F93-3A07-9A4E-C8D53D2CE42E>
>>     /usr/lib/system/libquarantine.dylib
>>
>>       0x7fff50a62000 -     0x7fff50a63ff3 libremovefile.dylib (45)
>>     <711E18B2-5BBE-3211-A916-56740C27D17A>
>>     /usr/lib/system/libremovefile.dylib
>>
>>       0x7fff50a64000 -     0x7fff50a7bfff libsystem_asl.dylib
>>     (356.70.1) <39E46A6F-B228-3E78-B83E-1779F9707A39>
>>     /usr/lib/system/libsystem_asl.dylib
>>
>>       0x7fff50a7c000 -     0x7fff50a7cfff libsystem_blocks.dylib (67)
>>     <17303FDF-0D2D-3963-B05E-B4DF63052D47>
>>     /usr/lib/system/libsystem_blocks.dylib
>>
>>       0x7fff50a7d000 -     0x7fff50b06ff7 libsystem_c.dylib
>>     (1244.50.9) <1187BFE8-4576-3247-8177-481554E1F9E7>
>>     /usr/lib/system/libsystem_c.dylib
>>
>>       0x7fff50b07000 -     0x7fff50b0affb
>>     libsystem_configuration.dylib (963.50.8)
>>     <DF6B5287-203E-30CB-9947-78DF446C72B8>
>>     /usr/lib/system/libsystem_configuration.dylib
>>
>>       0x7fff50b0b000 -     0x7fff50b0effb
>>     libsystem_coreservices.dylib (51)
>>     <486000D3-D8CB-3BE7-8EE5-8BF380DE6DF7>
>>     /usr/lib/system/libsystem_coreservices.dylib
>>
>>       0x7fff50b0f000 -     0x7fff50b10fff libsystem_darwin.dylib
>>     (1244.50.9) <09C21A4A-9EE0-388B-A9D9-DFF8F6758791>
>>     /usr/lib/system/libsystem_darwin.dylib
>>
>>       0x7fff50b11000 -     0x7fff50b17ff7 libsystem_dnssd.dylib
>>     (878.70.2) <3290768B-54DE-3AB6-B155-AC0950AC5564>
>>     /usr/lib/system/libsystem_dnssd.dylib
>>
>>       0x7fff50b18000 -     0x7fff50b61ff7 libsystem_info.dylib
>>     (517.30.1) <AB634A98-B8AA-3804-8436-38261FC8EC4D>
>>     /usr/lib/system/libsystem_info.dylib
>>
>>       0x7fff50b62000 -     0x7fff50b88ff7 libsystem_kernel.dylib
>>     (4570.71.2) <F22B8D73-69D8-36D7-BF66-7F9AC70C08C2>
>>     /usr/lib/system/libsystem_kernel.dylib
>>
>>       0x7fff50b89000 -     0x7fff50bd4fcb libsystem_m.dylib
>>     (3147.50.1) <8CFB51C9-B422-3379-8552-064C63943A23>
>>     /usr/lib/system/libsystem_m.dylib
>>
>>       0x7fff50bd5000 -     0x7fff50bf4fff libsystem_malloc.dylib
>>     (140.50.6) <7FD43735-9DDD-300E-8C4A-F909A74BDF49>
>>     /usr/lib/system/libsystem_malloc.dylib
>>
>>       0x7fff50bf5000 -     0x7fff50d25ff7 libsystem_network.dylib
>>     (1229.70.2) <5E86B2DE-9E15-3354-8714-4094ED5F698D>
>>     /usr/lib/system/libsystem_network.dylib
>>
>>       0x7fff50d26000 -     0x7fff50d30ffb
>>     libsystem_networkextension.dylib (767.70.1)
>>     <D23EAFC1-E8BD-34D5-969C-6E45A1C3B4E4>
>>     /usr/lib/system/libsystem_networkextension.dylib
>>
>>       0x7fff50d31000 -     0x7fff50d3aff3 libsystem_notify.dylib
>>     (172) <08012EC0-2CD2-34BE-BF93-E7F56491299A>
>>     /usr/lib/system/libsystem_notify.dylib
>>
>>       0x7fff50d3b000 -     0x7fff50d42ff7 libsystem_platform.dylib
>>     (161.50.1) <6355EE2D-5456-3CA8-A227-B96E8F1E2AF8>
>>     /usr/lib/system/libsystem_platform.dylib
>>
>>       0x7fff50d43000 -     0x7fff50d4efff libsystem_pthread.dylib
>>     (301.50.1) <0E51CCBA-91F2-34E1-BF2A-FEEFD3D321E4>
>>     /usr/lib/system/libsystem_pthread.dylib
>>
>>       0x7fff50d4f000 -     0x7fff50d52fff libsystem_sandbox.dylib
>>     (765.70.1) <553DFCC6-9D31-3B9C-AB7C-30F6F265786D>
>>     /usr/lib/system/libsystem_sandbox.dylib
>>
>>       0x7fff50d53000 -     0x7fff50d54ff3 libsystem_secinit.dylib
>>     (30) <DE8D14E8-A276-3FF8-AE13-77F7040F33C1>
>>     /usr/lib/system/libsystem_secinit.dylib
>>
>>       0x7fff50d55000 -     0x7fff50d5cff7 libsystem_symptoms.dylib
>>     (820.60.2) <585BDFA2-D54D-39D0-8046-44E824DABD43>
>>     /usr/lib/system/libsystem_symptoms.dylib
>>
>>       0x7fff50d5d000 -     0x7fff50d70fff libsystem_trace.dylib
>>     (829.70.1) <3A6CB706-8CA6-3616-8AFC-14AAD7FAF187>
>>     /usr/lib/system/libsystem_trace.dylib
>>
>>       0x7fff50d72000 -     0x7fff50d77ff7 libunwind.dylib (35.3)
>>     <BEF3FB49-5604-3B5F-82B5-332B80023AC3>
>>     /usr/lib/system/libunwind.dylib
>>
>>       0x7fff50d78000 -     0x7fff50da5ff7 libxpc.dylib (1205.70.9)
>>     <0BC7AD67-671D-31D4-8B88-C317B8379598>
/usr/lib/system/libxpc.dylib
>>
>>
>>     External Modification Summary:
>>
>>     Calls made by other processes targeting this process:
>>
>>       task_for_pid: 0
>>
>>       thread_create: 0
>>
>>       thread_set_state: 0
>>
>>     Calls made by this process:
>>
>>       task_for_pid: 0
>>
>>       thread_create: 0
>>
>>       thread_set_state: 0
>>
>>     Calls made by all processes on this machine:
>>
>>       task_for_pid: 227609
>>
>>       thread_create: 0
>>
>>       thread_set_state: 0
>>
>>
>>     VM Region Summary:
>>
>>     ReadOnly portion of Libraries: Total=260.6M resident=0K(0%)
>>     swapped_out_or_unallocated=260.6M(100%)
>>
>>     Writable regions: Total=142.7M written=0K(0%) resident=0K(0%)
>>     swapped_out=0K(0%) unallocated=142.7M(100%)
>>
>>                                   VIRTUAL  REGION
>>
>>     REGION TYPE                        SIZE    COUNT (non-coalesced)
>>
>>     ===========                    =======  ======>>
>>     Kernel Alloc Once                    8K        2
>>
>>     MALLOC                           78.2M       16
>>
>>     MALLOC guard page                   16K        5
>>
>>     STACK GUARD                          4K        2
>>
>>     Stack                            64.0M        2
>>
>>     __DATA                           5224K       45
>>
>>     __LINKEDIT                      201.9M        4
>>
>>     __TEXT                           58.8M       44
>>
>>     mapped file                        444K        9
>>
>>     shared memory                        8K        3
>>
>>     ===========                    =======  ======>>
>>     TOTAL                           408.4M      122
>>
>>
>>
>>     any suggestion? Thank you.
>>
>>     -- 
>>          Best Regards,
>>          Baozeng Ding
>>
>>     _______________________________________________
>>     LLVM Developers mailing list
>>     llvm-dev at lists.llvm.org <mailto:llvm-dev at
lists.llvm.org>
>>     http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
>
>
> -- 
>      Best Regards,
>      Baozeng Ding
>
>
>
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev

-- 
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux
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Baozeng via llvm-dev

2018-Sep-02 05:40 UTC

head link

[llvm-dev] crash problem when using IndirectBrInst to replace BranchInst

Eli,

Yes. The patch fixes the crash problem. Thanks a lot!

Friedman, Eli <efriedma at codeaurora.org> 于2018年9月1日周六 上午1:59写道：
> That looks like https://bugs.llvm.org/show_bug.cgi?id=37130 .
>
> -Eli
>
>-- 
     Best Regards,
     Baozeng Ding
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llvm dev - Aug 2018 - crash problem when using IndirectBrInst to replace BranchInst

[llvm-dev] crash problem when using IndirectBrInst to replace BranchInst

[llvm-dev] crash problem when using IndirectBrInst to replace BranchInst

[llvm-dev] crash problem when using IndirectBrInst to replace BranchInst