[webkit-dev] jsc bus error EXC_BAD_ACCESS with jsc-only build on Mac
Michael Saboff
msaboff at apple.com
Tue Mar 28 20:19:57 PDT 2023
Great news.
In all the time I have been on the team, I have never heard of the “--jsc-only” option. It doesn’t show up in the —help output.
- Michael
> On Mar 28, 2023, at 4:57 PM, Laurence Rowe <l at lrowe.co.uk> wrote:
>
> Michael,
>
> So build-jsc without the —jsc-only works:
>
> lrowe at Laurences-MacBook-Air WebKit % ./WebKitBuild/Release/JavaScriptCore.framework/Helpers/jsc
> >>> print(1+1)
> 2
>
> I was hoping to try and wrap the jsc-only build into a rust crate since the existing rust wrappers either include gtk dependencies or only wrap the lower level api and link against the system libraries. Though it is looking like I lack the C++ build experience to pull that off!
>
> Thanks for you help debugging this. Is it worth turning this into a bug report for fixing the jsc-only build on Mac?
>
> Laurence
>
> On Mar 28, 2023 at 4:22:20 PM, Michael Saboff <msaboff at apple.com <mailto:msaboff at apple.com>> wrote:
>> Laurence,
>>
>> The problem you are having is that you don’t have the OS privilege to write to the memory allocated for JIT’ed code. It is the “dynamic-codesigning” entitlement.
>>
>> Instead of building with cmake, why don’t you try “make clean ; build-jsc" and see what happens. I see that you already tried build-jsc, but let’s just see what happens when with a make clean first.
>>
>> - Michael
>>
>>> On Mar 28, 2023, at 4:03 PM, Laurence Rowe <l at lrowe.co.uk <mailto:l at lrowe.co.uk>> wrote:
>>>
>>> Michael,
>>>
>>> Here’s the lldb bt output:
>>>
>>> lrowe at Laurences-MacBook-Air WebKit % DYLD_FRAMEWORK_PATH=/Users/lrowe/scratch/WebKit/WebKitBuild/Release lldb ./WebKitBuild/Release/bin/jsc
>>> (lldb) target create "./WebKitBuild/Release/bin/jsc"
>>> Current executable set to '/Users/lrowe/scratch/WebKit/WebKitBuild/Release/bin/jsc' (arm64).
>>>
>>> (lldb) run
>>> Process 94428 launched: '/Users/lrowe/scratch/WebKit/WebKitBuild/Release/bin/jsc' (arm64)
>>> Process 94428 stopped
>>> * thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=2, address=0x10d5ac000)
>>> frame #0: 0x00000001a1b43f78 libsystem_platform.dylib`_platform_memmove + 168
>>> libsystem_platform.dylib`:
>>> -> 0x1a1b43f78 <+168>: stp q2, q3, [x0]
>>> 0x1a1b43f7c <+172>: subs x2, x2, #0x40
>>> 0x1a1b43f80 <+176>: b.ls <http://b.ls/> 0x1a1b43f9c ; <+204>
>>> 0x1a1b43f84 <+180>: stp q0, q1, [x3]
>>> Target 0: (jsc) stopped.
>>>
>>> (lldb) bt
>>> * thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=2, address=0x10d5ac000)
>>> * frame #0: 0x00000001a1b43f78 libsystem_platform.dylib`_platform_memmove + 168
>>> frame #1: 0x0000000101bbd850 JavaScriptCore`void JSC::LinkBuffer::copyCompactAndLinkCode<unsigned int>(JSC::MacroAssembler&, JSC::JITCompilationEffort) + 4668
>>> frame #2: 0x0000000101bbc460 JavaScriptCore`JSC::LinkBuffer::linkCode(JSC::MacroAssembler&, JSC::JITCompilationEffort) + 64
>>> frame #3: 0x00000001025aa698 JavaScriptCore`JSC::nativeForGenerator(JSC::VM&, JSC::ThunkFunctionType, JSC::CodeSpecializationKind, JSC::ThunkEntryType, JSC::IncludeDebuggerHook) + 2872
>>> frame #4: 0x0000000102592700 JavaScriptCore`JSC::JITThunks::ctiStub(JSC::VM&, JSC::MacroAssemblerCodeRef<(WTF::PtrTag)26129> (*)(JSC::VM&)) + 444
>>> frame #5: 0x0000000102592abc JavaScriptCore`JSC::JITThunks::ctiInternalFunctionCall(JSC::VM&) + 32
>>> frame #6: 0x00000001029f95a0 JavaScriptCore`JSC::VM::VM(JSC::VM::VMType, JSC::HeapType, WTF::RunLoop*, bool*) + 9008
>>> frame #7: 0x00000001029fd318 JavaScriptCore`JSC::VM::create(JSC::HeapType, WTF::RunLoop*) + 56
>>> frame #8: 0x000000010000776c jsc`jscmain(int, char**) + 744
>>> frame #9: 0x00000001000073a0 jsc`main + 40
>>> frame #10: 0x00000001a17ebe50 dyld`start + 2544
>>>
>>> And that for vmmap:
>>>
>>> lrowe at Laurences-MacBook-Air WebKit % vmmap jsc
>>> Can't examine target process's malloc zone WebKit Malloc_0x1035b68f8, so memory analysis will be incomplete or incorrect.
>>> Reason: dlopen(/Users/lrowe/scratch/WebKit/WebKitBuild/Release/lib/JavaScriptCore.framework/Versions/1.0.0/JavaScriptCore, 0x0185): tried: '/Users/lrowe/scratch/WebKit/WebKitBuild/Release/lib/JavaScriptCore.framework/Versions/1.0.0/JavaScriptCore' (mach-o file, but is an incompatible architecture (have 'arm64', need '')), '/System/Volumes/Preboot/Cryptexes/OS/Users/lrowe/scratch/WebKit/WebKitBuild/Release/lib/JavaScriptCore.framework/Versions/1.0.0/JavaScriptCore' (no such file), '/Users/lrowe/scratch/WebKit/WebKitBuild/Release/lib/JavaScriptCore.framework/Versions/1.0.0/JavaScriptCore' (mach-o file, but is an incompatible architecture (have 'arm64', need '')), '/System/Library/Frameworks/JavaScriptCore.framework/Versions/1.0.0/JavaScriptCore' (no such file, not in dyld cache)
>>>
>>> Process: jsc [94428]
>>> Path: /Users/USER/*/jsc
>>> Load Address: 0x100000000
>>> Identifier: jsc
>>> Version: ???
>>> Code Type: ARM64
>>> Platform: macOS
>>> Parent Process: debugserver [94429]
>>>
>>> Date/Time: 2023-03-28 15:56:42.068 -0700
>>> Launch Time: 2023-03-28 15:56:12.787 -0700
>>> OS Version: macOS 13.2.1 (22D68)
>>> Report Version: 7
>>> Analysis Tool: /Applications/Xcode.app/Contents/Developer/usr/bin/vmmap
>>> Analysis Tool Version: Xcode 14.2 (14C18)
>>>
>>> Physical footprint: 2577K
>>> Physical footprint (peak): 2577K
>>> Idle exit: untracked
>>> ----
>>>
>>> Virtual Memory Map of process 94428 (jsc)
>>> Output report format: 2.4 -- 64-bit process
>>> VM page size: 16384 bytes
>>>
>>> ==== Non-writable regions for process 94428
>>> REGION TYPE START - END [ VSIZE RSDNT DIRTY SWAP] PRT/MAX SHRMOD PURGE REGION DETAIL
>>> __TEXT 100000000-10003c000 [ 240K 112K 0K 0K] r-x/r-x SM=COW /Users/USER/*/jsc
>>> __DATA_CONST 10003c000-100040000 [ 16K 16K 0K 0K] r--/rw- SM=COW /Users/USER/*/jsc
>>> __LINKEDIT 100044000-10005c000 [ 96K 96K 0K 0K] r--/r-- SM=COW /Users/USER/*/jsc
>>> dyld private memory 10005c000-10009c000 [ 256K 32K 32K 16K] r--/rwx SM=PRV
>>> shared memory 1000e4000-1000e8000 [ 16K 16K 16K 0K] r--/r-- SM=SHM
>>> MALLOC metadata 1000e8000-1000ec000 [ 16K 16K 16K 0K] r--/rwx SM=ZER MallocHelperZone_0x1000e8000 zone structure
>>> MALLOC guard page 1000f0000-1000f4000 [ 16K 0K 0K 0K] ---/rwx SM=ZER
>>> MALLOC guard page 1000fc000-100100000 [ 16K 0K 0K 0K] ---/rwx SM=ZER
>>> MALLOC guard page 100100000-100104000 [ 16K 0K 0K 0K] ---/rwx SM=NUL
>>> MALLOC guard page 10010c000-100114000 [ 32K 0K 0K 0K] ---/rwx SM=NUL
>>> MALLOC guard page 10011c000-100120000 [ 16K 0K 0K 0K] ---/rwx SM=NUL
>>> MALLOC metadata 100120000-100124000 [ 16K 16K 16K 0K] r--/rwx SM=PRV
>>> MALLOC metadata 100124000-100128000 [ 16K 16K 16K 0K] r--/rwx SM=ZER DefaultMallocZone_0x100124000 zone structure
>>> __TEXT 101b38000-103000000 [ 20.8M 2768K 0K 0K] r-x/rwx SM=COW /Users/USER/*/JavaScriptCore.framework/Versions/1.0.0/JavaScriptCore
>>> __DATA_CONST 103000000-103048000 [ 288K 176K 0K 0K] r--/rw- SM=COW /Users/USER/*/JavaScriptCore.framework/Versions/1.0.0/JavaScriptCore
>>> __LINKEDIT 103078000-1035a8000 [ 5312K 5312K 0K 0K] r--/rwx SM=COW /Users/USER/*/JavaScriptCore.framework/Versions/1.0.0/JavaScriptCore
>>> JS JIT generated code 10d5a8000-10d5ac000 [ 16K 0K 0K 0K] ---/rwx SM=NUL
>>> JS JIT generated code 12d5ac000-12d5b0000 [ 16K 0K 0K 0K] ---/rwx SM=NUL
>>> STACK GUARD 16be00000-16f604000 [ 56.0M 0K 0K 0K] ---/rwx SM=NUL stack guard for thread 0
>>> STACK GUARD 16fe00000-16fe04000 [ 16K 0K 0K 0K] ---/rwx SM=NUL stack guard for thread 1
>>> __TEXT 1a17a0000-1a17e4000 [ 272K 272K 0K 0K] r-x/r-x SM=COW /usr/lib/libobjc.A.dylib
>>> __TEXT 1a17e4000-1a17e6000 [ 8K 8K 8K 0K] r-x/rwx SM=COW /usr/lib/libobjc.A.dylib
>>> __TEXT 1a17e6000-1a17e8000 [ 8K 8K 8K 0K] r-x/rwx SM=COW /usr/lib/dyld
>>> __TEXT 1a17e8000-1a1818000 [ 192K 192K 0K 0K] r-x/r-x SM=COW /usr/lib/dyld
>>> __TEXT 1a1818000-1a181c000 [ 16K 0K 0K 16K] r-x/rwx SM=COW /usr/lib/dyld
>>> __TEXT 1a181c000-1a1871000 [ 340K 324K 0K 0K] r-x/r-x SM=COW /usr/lib/dyld
>>> __TEXT 1a1871000-1a1876000 [ 20K 20K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libsystem_blocks.dylib
>>> __TEXT 1a1876000-1a18ba000 [ 272K 272K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libxpc.dylib
>>> __TEXT 1a18ba000-1a18d4000 [ 104K 104K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libsystem_trace.dylib
>>> __TEXT 1a18d4000-1a195e000 [ 552K 552K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libcorecrypto.dylib
>>> __TEXT 1a195e000-1a198a000 [ 176K 176K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libsystem_malloc.dylib
>>> __TEXT 1a198a000-1a19d2000 [ 288K 288K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libdispatch.dylib
>>> __TEXT 1a19d2000-1a19d5000 [ 12K 12K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libsystem_featureflags.dylib
>>> __TEXT 1a19d5000-1a1a56000 [ 516K 500K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libsystem_c.dylib
>>> __TEXT 1a1a56000-1a1abd000 [ 412K 380K 0K 0K] r-x/r-x SM=COW /usr/lib/libc++.1.dylib
>>> __TEXT 1a1abd000-1a1ad5000 [ 96K 96K 0K 0K] r-x/r-x SM=COW /usr/lib/libc++abi.dylib
>>> __TEXT 1a1ad5000-1a1b0f000 [ 232K 232K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libsystem_kernel.dylib
>>> __TEXT 1a1b0f000-1a1b1c000 [ 52K 52K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libsystem_pthread.dylib
>>> __TEXT 1a1b1c000-1a1b40000 [ 144K 144K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libdyld.dylib
>>> __TEXT 1a1b40000-1a1b48000 [ 32K 32K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libsystem_platform.dylib
>>> __TEXT 1a1b48000-1a1b74000 [ 176K 160K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libsystem_info.dylib
>>> __TEXT 1a46be000-1a4975000 [ 2780K 2460K 0K 0K] r-x/r-x SM=COW /usr/lib/libicucore.A.dylib
>>> __TEXT 1a4975000-1a4980000 [ 44K 44K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libsystem_darwin.dylib
>>> __TEXT 1a4ddf000-1a4def000 [ 64K 64K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libsystem_notify.dylib
>>> __TEXT 1a6764000-1a677d000 [ 100K 100K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libsystem_networkextension.dylib
>>> __TEXT 1a67e4000-1a67fc000 [ 96K 96K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libsystem_asl.dylib
>>> __TEXT 1a7fb9000-1a7fc2000 [ 36K 36K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libsystem_symptoms.dylib
>>> __TEXT 1aadaa000-1aaddc000 [ 200K 200K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libsystem_containermanager.dylib
>>> __TEXT 1abd3b000-1abd40000 [ 20K 20K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libsystem_configuration.dylib
>>> __TEXT 1abd40000-1abd46000 [ 24K 24K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libsystem_sandbox.dylib
>>> __TEXT 1ac81b000-1ac81e000 [ 12K 12K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libquarantine.dylib
>>> __TEXT 1ace5c000-1ace62000 [ 24K 24K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libsystem_coreservices.dylib
>>> __TEXT 1ad124000-1ad15c000 [ 224K 192K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libsystem_m.dylib
>>> __TEXT 1ad15d000-1ad163000 [ 24K 24K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libmacho.dylib
>>> __TEXT 1ad17f000-1ad190000 [ 68K 68K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libcommonCrypto.dylib
>>> __TEXT 1ad190000-1ad19b000 [ 44K 44K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libunwind.dylib
>>> __TEXT 1ad19b000-1ad1a3000 [ 32K 32K 0K 0K] r-x/r-x SM=COW /usr/lib/liboah.dylib
>>> __TEXT 1ad1a3000-1ad1ad000 [ 40K 40K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libcopyfile.dylib
>>> __TEXT 1ad1ad000-1ad1b1000 [ 16K 16K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libcompiler_rt.dylib
>>> __TEXT 1ad1b1000-1ad1b6000 [ 20K 20K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libsystem_collections.dylib
>>> __TEXT 1ad1b6000-1ad1b9000 [ 12K 12K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libsystem_secinit.dylib
>>> __TEXT 1ad1b9000-1ad1bc000 [ 12K 12K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libremovefile.dylib
>>> __TEXT 1ad1bc000-1ad1bd000 [ 4K 4K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libkeymgr.dylib
>>> __TEXT 1ad1bd000-1ad1c6000 [ 36K 36K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libsystem_dnssd.dylib
>>> __TEXT 1ad1c6000-1ad1cc000 [ 24K 24K 0K 0K] r-x/r-x SM=COW /usr/lib/system/libcache.dylib
>>> __TEXT 1ad1cc000-1ad1ce000 [ 8K 8K 0K 0K] r-x/r-x SM=COW /usr/lib/libSystem.B.dylib
>>> __TEXT 1c70d3000-1c7104000 [ 196K 148K 0K 0K] r-x/r-x SM=COW /usr/lib/libncurses.5.4.dylib
>>> __TEXT 1e381e000-1e383c000 [ 120K 120K 0K 0K] r-x/r-x SM=COW /usr/lib/libedit.3.dylib
>>> __OBJC_RO 1f19d8f50-1f5b51b18 [ 65.5M 31.1M 0K 0K] r-x/r-x SM=COW /usr/lib/libobjc.A.dylib
>>> __DATA_CONST 1f5b54000-1f5b54de0 [ 3552 3552 0K 0K] r--/rw- SM=COW /usr/lib/libobjc.A.dylib
>>> __DATA_CONST 1f5b54de0-1f5b54f58 [ 376 376 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_blocks.dylib
>>> __DATA_CONST 1f5b54f58-1f5b55750 [ 2040 2040 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_trace.dylib
>>> __DATA_CONST 1f5b55750-1f5b56028 [ 2264 2264 0K 0K] r--/rw- SM=COW /usr/lib/system/libcorecrypto.dylib
>>> __DATA_CONST 1f5b56028-1f5b56080 [ 88 88 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_malloc.dylib
>>> __DATA_CONST 1f5b56080-1f5b560c0 [ 64 64 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_featureflags.dylib
>>> __DATA_CONST 1f5b560c0-1f5b578a0 [ 6K 6K 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_c.dylib
>>> __DATA_CONST 1f5b578a0-1f5b58200 [ 2400 2400 0K 0K] r--/rw- SM=COW /usr/lib/libc++.1.dylib
>>> __DATA_CONST 1f5b58200-1f5b582d0 [ 208 208 0K 0K] r--/rw- SM=COW /usr/lib/libc++abi.dylib
>>> __DATA_CONST 1f5b582d0-1f5b5a5b0 [ 9K 9K 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_kernel.dylib
>>> __DATA_CONST 1f5b5a5b0-1f5b5a5e8 [ 56 56 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_pthread.dylib
>>> __DATA_CONST 1f5b5a5e8-1f5b5aa28 [ 1088 1088 0K 0K] r--/rw- SM=COW /usr/lib/system/libdyld.dylib
>>> __DATA_CONST 1f5b5aa28-1f5b5aa48 [ 32 32 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_platform.dylib
>>> __DATA_CONST 1f5b5aa48-1f5b5af60 [ 1304 1304 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_info.dylib
>>> __DATA_CONST 1f5bfdee0-1f5c0cda0 [ 60K 60K 0K 0K] r--/rw- SM=COW /usr/lib/libicucore.A.dylib
>>> __DATA_CONST 1f5c0cda0-1f5c0f720 [ 10K 10K 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_darwin.dylib
>>> __DATA_CONST 1f5c1af48-1f5c1b0a0 [ 344 344 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_notify.dylib
>>> __DATA_CONST 1f5dfe280-1f5dfe8d0 [ 1616 1616 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_networkextension.dylib
>>> __DATA_CONST 1f5dffb30-1f5e00150 [ 1568 1568 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_asl.dylib
>>> __DATA_CONST 1f5e4b0d0-1f5e4b280 [ 432 432 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_symptoms.dylib
>>> __DATA_CONST 1f60d7378-1f60d7e90 [ 2840 2840 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_containermanager.dylib
>>> __DATA_CONST 1f618ab38-1f618ad10 [ 472 472 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_configuration.dylib
>>> __DATA_CONST 1f618ad10-1f618ad88 [ 120 120 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_sandbox.dylib
>>> __DATA_CONST 1f61c3ca0-1f61c3cf0 [ 80 80 0K 0K] r--/rw- SM=COW /usr/lib/system/libquarantine.dylib
>>> __DATA_CONST 1f625a798-1f625b038 [ 2208 2208 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_coreservices.dylib
>>> __DATA_CONST 1f6282fa8-1f62836f0 [ 1864 1864 0K 0K] r--/rw- SM=COW /usr/lib/system/libmacho.dylib
>>> __DATA_CONST 1f6283700-1f6283ea0 [ 1952 1952 0K 0K] r--/rw- SM=COW /usr/lib/system/libcommonCrypto.dylib
>>> __DATA_CONST 1f6283ea0-1f62841c0 [ 800 800 0K 0K] r--/rw- SM=COW /usr/lib/system/libunwind.dylib
>>> __DATA_CONST 1f62841c0-1f62841d8 [ 24 24 0K 0K] r--/rw- SM=COW /usr/lib/liboah.dylib
>>> __DATA_CONST 1f62841d8-1f62844c8 [ 752 752 0K 0K] r--/rw- SM=COW /usr/lib/system/libcopyfile.dylib
>>> __DATA_CONST 1f62844c8-1f62844d0 [ 8 8 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_collections.dylib
>>> __DATA_CONST 1f62844d0-1f6284540 [ 112 112 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_secinit.dylib
>>> __DATA_CONST 1f6284540-1f6284550 [ 16 16 0K 0K] r--/rw- SM=COW /usr/lib/system/libremovefile.dylib
>>> __DATA_CONST 1f6284550-1f6284560 [ 16 16 0K 0K] r--/rw- SM=COW /usr/lib/system/libkeymgr.dylib
>>> __DATA_CONST 1f6284560-1f62845d8 [ 120 120 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_dnssd.dylib
>>> __DATA_CONST 1f62845d8-1f6284658 [ 128 128 0K 0K] r--/rw- SM=COW /usr/lib/system/libcache.dylib
>>> __DATA_CONST 1f6284658-1f6284668 [ 16 16 0K 0K] r--/rw- SM=COW /usr/lib/libSystem.B.dylib
>>> __DATA_CONST 1f73e77e0-1f73ea858 [ 12K 12K 0K 0K] r--/rw- SM=COW /usr/lib/libncurses.5.4.dylib
>>> __DATA_CONST 1f845db60-1f845eeb8 [ 5K 5K 0K 0K] r--/rw- SM=COW /usr/lib/libedit.3.dylib
>>> __AUTH_CONST 1feaa8000-1feaa8ac0 [ 2752 2752 0K 0K] r--/rw- SM=COW /usr/lib/libobjc.A.dylib
>>> __OBJC_CONST 1feaa8ac0-1feaa8d90 [ 720 720 0K 0K] r--/rw- SM=COW /usr/lib/libobjc.A.dylib
>>> __DATA_CONST 1feaa8d90-1feaae410 [ 22K 22K 0K 0K] r--/rw- SM=COW /usr/lib/dyld
>>> __AUTH_CONST 1feaae410-1feaae478 [ 104 104 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_blocks.dylib
>>> __OBJC_CONST 1feaae478-1feaae7d8 [ 864 864 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_blocks.dylib
>>> __DATA_CONST 1feaae7e0-1feab3948 [ 20K 20K 0K 0K] r--/rw- SM=COW /usr/lib/system/libxpc.dylib
>>> __OBJC_CONST 1feab3948-1feab4bd8 [ 5K 5K 0K 0K] r--/rw- SM=COW /usr/lib/system/libxpc.dylib
>>> __AUTH_CONST 1feab4bd8-1feab58e0 [ 3336 3336 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_trace.dylib
>>> __OBJC_CONST 1feab58e0-1feab5a90 [ 432 432 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_trace.dylib
>>> __AUTH_CONST 1feab5a90-1feab6f30 [ 5K 5K 0K 0K] r--/rw- SM=COW /usr/lib/system/libcorecrypto.dylib
>>> __AUTH_CONST 1feab6f30-1feab7550 [ 1568 1568 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_malloc.dylib
>>> __DATA_CONST 1feab7580-1feaca740 [ 76K 44K 0K 0K] r--/rw- SM=COW /usr/lib/system/libdispatch.dylib
>>> __OBJC_CONST 1feaca740-1feacb790 [ 4K 4K 0K 0K] r--/rw- SM=COW /usr/lib/system/libdispatch.dylib
>>> __AUTH_CONST 1feacb790-1feacb908 [ 376 376 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_featureflags.dylib
>>> __AUTH_CONST 1feacb908-1feacc280 [ 2424 2424 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_c.dylib
>>> __AUTH_CONST 1feacc280-1feace3c0 [ 8K 8K 0K 0K] r--/rw- SM=COW /usr/lib/libc++.1.dylib
>>> __AUTH_CONST 1feace3c0-1fead15c8 [ 13K 13K 0K 0K] r--/rw- SM=COW /usr/lib/libc++abi.dylib
>>> __AUTH_CONST 1fead15c8-1fead16e8 [ 288 288 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_kernel.dylib
>>> __AUTH_CONST 1fead16e8-1fead1918 [ 560 560 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_pthread.dylib
>>> __AUTH_CONST 1fead1918-1fead2540 [ 3112 3112 0K 0K] r--/rw- SM=COW /usr/lib/system/libdyld.dylib
>>> __AUTH_CONST 1fead2540-1fead27c8 [ 648 648 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_platform.dylib
>>> __AUTH_CONST 1fead27c8-1fead3968 [ 4K 4K 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_info.dylib
>>> __AUTH_CONST 1fec27ce8-1fec39c38 [ 72K 72K 0K 0K] r--/rw- SM=COW /usr/lib/libicucore.A.dylib
>>> __AUTH_CONST 1fec39c38-1fec3a080 [ 1096 1096 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_darwin.dylib
>>> __AUTH_CONST 1fec55fb0-1fec56330 [ 896 896 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_notify.dylib
>>> __AUTH_CONST 1fedd91f8-1fedd9dd0 [ 3032 3032 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_networkextension.dylib
>>> __AUTH_CONST 1fee3bb80-1fee3c5c8 [ 2632 2632 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_asl.dylib
>>> __AUTH_CONST 1feed9a90-1feed9d58 [ 712 712 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_symptoms.dylib
>>> __AUTH_CONST 1ff017830-1ff019020 [ 6K 6K 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_containermanager.dylib
>>> __AUTH_CONST 1ff1369d8-1ff136d00 [ 808 808 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_configuration.dylib
>>> __AUTH_CONST 1ff136d00-1ff136f08 [ 520 520 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_sandbox.dylib
>>> __AUTH_CONST 1ff173640-1ff173750 [ 272 272 0K 0K] r--/rw- SM=COW /usr/lib/system/libquarantine.dylib
>>> __AUTH_CONST 1ff1fd268-1ff1fd550 [ 744 744 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_coreservices.dylib
>>> __AUTH_CONST 1ff223b60-1ff223b80 [ 32 32 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_m.dylib
>>> __AUTH_CONST 1ff223c00-1ff223c70 [ 112 112 0K 0K] r--/rw- SM=COW /usr/lib/system/libmacho.dylib
>>> __AUTH_CONST 1ff223d88-1ff224b78 [ 3568 3568 0K 0K] r--/rw- SM=COW /usr/lib/system/libcommonCrypto.dylib
>>> __AUTH_CONST 1ff224b78-1ff224c90 [ 280 280 0K 0K] r--/rw- SM=COW /usr/lib/system/libunwind.dylib
>>> __AUTH_CONST 1ff224c90-1ff224fb8 [ 808 808 0K 0K] r--/rw- SM=COW /usr/lib/liboah.dylib
>>> __AUTH_CONST 1ff224fb8-1ff225418 [ 1120 1120 0K 0K] r--/rw- SM=COW /usr/lib/system/libcopyfile.dylib
>>> __AUTH_CONST 1ff225418-1ff225478 [ 96 96 0K 0K] r--/rw- SM=COW /usr/lib/system/libcompiler_rt.dylib
>>> __AUTH_CONST 1ff225478-1ff2255c8 [ 336 336 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_collections.dylib
>>> __AUTH_CONST 1ff2255c8-1ff225890 [ 712 712 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_secinit.dylib
>>> __AUTH_CONST 1ff225890-1ff225a00 [ 368 368 0K 0K] r--/rw- SM=COW /usr/lib/system/libremovefile.dylib
>>> __AUTH_CONST 1ff225a00-1ff225a80 [ 128 128 0K 0K] r--/rw- SM=COW /usr/lib/system/libkeymgr.dylib
>>> __AUTH_CONST 1ff225a80-1ff225c40 [ 448 448 0K 0K] r--/rw- SM=COW /usr/lib/system/libsystem_dnssd.dylib
>>> __AUTH_CONST 1ff225c40-1ff225d18 [ 216 216 0K 0K] r--/rw- SM=COW /usr/lib/system/libcache.dylib
>>> __AUTH_CONST 1ff225d18-1ff225fd8 [ 704 704 0K 0K] r--/rw- SM=COW /usr/lib/libSystem.B.dylib
>>> __AUTH_CONST 20089cfd8-20089d2f8 [ 800 800 0K 0K] r--/rw- SM=COW /usr/lib/libncurses.5.4.dylib
>>> __AUTH_CONST 201ab73a8-201ab7b08 [ 1888 1888 0K 0K] r--/rw- SM=COW /usr/lib/libedit.3.dylib
>>> __LINKEDIT 23ef38000-26ef04000 [767.8M 29.5M 0K 0K] r--/r-- SM=COW dyld shared cache combined __LINKEDIT
>>> unused __TEXT 26ef04000-26ef08000 [ 16K 16K 16K 0K] r--/r-- SM=COW on dirty page unused system shared lib __DATA
>>> JS VM Gigacage 7800000000-8000000000 [ 32.0G 0K 0K 0K] ---/rwx SM=NUL
>>>
>>> ==== Writable regions for process 94428
>>> REGION TYPE START - END [ VSIZE RSDNT DIRTY SWAP] PRT/MAX SHRMOD PURGE REGION DETAIL
>>> __DATA 100040000-100044000 [ 16K 0K 0K 16K] rw-/rw- SM=COW /Users/USER/*/jsc
>>> WebKit Malloc 10009c000-1000b0000 [ 80K 0K 0K 80K] rw-/rwx SM=PRV
>>> Kernel Alloc Once 1000dc000-1000e4000 [ 32K 0K 0K 16K] rw-/rwx SM=PRV
>>> MALLOC metadata 1000ec000-1000f0000 [ 16K 16K 16K 0K] rw-/rwx SM=ZER
>>> MALLOC metadata 1000f4000-1000fc000 [ 32K 32K 32K 0K] rw-/rwx SM=ZER
>>> MALLOC metadata 100104000-10010c000 [ 32K 32K 32K 0K] rw-/rwx SM=PRV
>>> MALLOC metadata 100114000-10011c000 [ 32K 0K 0K 32K] rw-/rwx SM=PRV
>>> MALLOC metadata 100128000-10012c000 [ 16K 16K 16K 0K] rw-/rwx SM=ZER
>>> MALLOC_TINY 100200000-100300000 [ 1024K 32K 32K 0K] rw-/rwx SM=PRV MallocHelperZone_0x1000e8000
>>> MALLOC_SMALL 100800000-101000000 [ 8192K 16K 16K 16K] rw-/rwx SM=PRV MallocHelperZone_0x1000e8000
>>> __DATA 103048000-103060000 [ 96K 0K 0K 48K] rw-/rw- SM=COW /Users/USER/*/JavaScriptCore.framework/Versions/1.0.0/JavaScriptCore
>>> __DATA 103060000-103078000 [ 96K 0K 0K 96K] rw-/rwx SM=PRV /Users/USER/*/JavaScriptCore.framework/Versions/1.0.0/JavaScriptCore
>>> WebKit Malloc 1035a8000-10b5a8000 [128.0M 16K 16K 176K] rw-/rwx SM=PRV
>>> WebKit Malloc 10b5a8000-10d5a8000 [ 32.0M 32K 32K 448K] rw-/rwx SM=PRV
>>> JS JIT generated code 10d5ac000-12d5ac000 [512.0M 0K 0K 16K] rwx/rwx SM=PRV
>>> WebKit Malloc 12d5b0000-12f5b0000 [ 32.0M 32K 32K 288K] rw-/rwx SM=PRV
>>> Stack 16f604000-16fe00000 [ 8176K 16K 16K 16K] rw-/rwx SM=PRV thread 0
>>> Stack 16fe04000-16fe8c000 [ 544K 0K 0K 16K] rw-/rwx SM=PRV thread 1
>>> __DATA 1fab58000-1fab5b4c0 [ 13K 0K 0K 13K] rw-/rw- SM=COW /usr/lib/libobjc.A.dylib
>>> __DATA 1fab5b4c0-1fab5b4d8 [ 24 0K 0K 24] rw-/rw- SM=COW /usr/lib/system/libsystem_blocks.dylib
>>> __DATA 1fab5b4d8-1fab5c228 [ 3408 0K 0K 3408] rw-/rw- SM=COW /usr/lib/system/libxpc.dylib
>>> __DATA 1fab5c228-1fab5c410 [ 488 0K 0K 488] rw-/rw- SM=COW /usr/lib/system/libsystem_trace.dylib
>>> __DATA 1fab5c410-1fab64bc0 [ 34K 0K 0K 34K] rw-/rw- SM=COW /usr/lib/system/libcorecrypto.dylib
>>> __DATA 1fab64bc0-1fab66e7c [ 9K 0K 0K 9K] rw-/rw- SM=COW /usr/lib/system/libsystem_malloc.dylib
>>> unused __DATA 1fab66e7c-1fab66e80 [ 4 0K 0K 4] rw-/rw- SM=COW on dirty page unused system shared lib __DATA
>>> __DATA 1fab66e80-1fab66eb9 [ 57 0K 0K 57] rw-/rw- SM=COW /usr/lib/system/libsystem_featureflags.dylib
>>> unused __DATA 1fab66eb9-1fab66ec0 [ 7 0K 0K 7] rw-/rw- SM=COW on dirty page unused system shared lib __DATA
>>> __DATA 1fab66ec0-1fab69040 [ 8K 0K 0K 8K] rw-/rw- SM=COW /usr/lib/system/libsystem_c.dylib
>>> unused __DATA 1fab69040-1fab6a000 [ 4032 0K 0K 4032] rw-/rw- SM=COW on dirty page unused system shared lib __DATA
>>> __DATA 1fab6a000-1fab70720 [ 26K 16K 0K 10K] rw-/rw- SM=COW /usr/lib/libc++.1.dylib
>>> __DATA 1fab70720-1fab70a68 [ 840 0K 0K 840] rw-/rw- SM=COW /usr/lib/libc++abi.dylib
>>> __DATA 1fab70a68-1fab70ce0 [ 632 0K 0K 632] rw-/rw- SM=COW /usr/lib/system/libsystem_kernel.dylib
>>> unused __DATA 1fab70ce0-1fab74000 [ 13K 0K 0K 13K] rw-/rw- SM=COW on dirty page unused system shared lib __DATA
>>> __DATA 1fab74000-1fab7c000 [ 32K 32K 0K 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_pthread.dylib
>>> __DATA 1fab7c000-1fab80000 [ 16K 16K 0K 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_pthread.dylib
>>> __DATA 1fab80000-1fab80048 [ 72 72 0K 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_pthread.dylib
>>> __DATA 1fab80048-1fab800b0 [ 104 104 0K 0K] rw-/rw- SM=COW /usr/lib/system/libdyld.dylib
>>> __DATA 1fab800b0-1fab800f0 [ 64 64 0K 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_platform.dylib
>>> __DATA 1fab800f0-1fab80c40 [ 2896 2896 0K 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_info.dylib
>>> __DATA 1fac1c558-1fac1e038 [ 7K 7K 0K 0K] rw-/rw- SM=COW /usr/lib/libicucore.A.dylib
>>> __DATA 1fac1e038-1fac1e048 [ 16 16 0K 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_darwin.dylib
>>> __DATA 1fac27000-1fac27058 [ 88 88 0K 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_notify.dylib
>>> __DATA 1fac5d6a8-1fac5dc68 [ 1472 1472 0K 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_networkextension.dylib
>>> __DATA 1fac5e340-1fac5e450 [ 272 272 0K 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_asl.dylib
>>> __DATA 1fac7e290-1fac7e2d0 [ 64 64 0K 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_symptoms.dylib
>>> __DATA 1facd7b88-1facd7d40 [ 440 440 0K 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_containermanager.dylib
>>> __DATA 1fad03730-1fad037f1 [ 193 193 0K 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_configuration.dylib
>>> __DATA 1fad037f8-1fad03820 [ 40 40 0K 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_sandbox.dylib
>>> __DATA 1fad19050-1fad19060 [ 16 16 0K 0K] rw-/rw- SM=COW /usr/lib/system/libquarantine.dylib
>>> __DATA 1fad21f10-1fad21fb8 [ 168 168 0K 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_coreservices.dylib
>>> __DATA 1fad2a164-1fad2a168 [ 4 4 0K 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_m.dylib
>>> __DATA 1fad2a228-1fad2ab21 [ 2297 2297 0K 0K] rw-/rw- SM=COW /usr/lib/system/libunwind.dylib
>>> __DATA 1fad2ab28-1fad2bb30 [ 4K 4K 0K 0K] rw-/rw- SM=COW /usr/lib/liboah.dylib
>>> __DATA 1fad2bb30-1fad2bb40 [ 16 16 0K 0K] rw-/rw- SM=COW /usr/lib/system/libcopyfile.dylib
>>> __DATA 1fad2bb40-1fad2cb40 [ 4K 4K 0K 0K] rw-/rw- SM=COW /usr/lib/system/libcompiler_rt.dylib
>>> __DATA 1fad2cb40-1fad2cb80 [ 64 64 0K 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_secinit.dylib
>>> __DATA 1fad2cb80-1fad2cbb0 [ 48 48 0K 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_dnssd.dylib
>>> __DATA 1fad2cbb0-1fad2cbb8 [ 8 8 0K 0K] rw-/rw- SM=COW /usr/lib/libSystem.B.dylib
>>> __DATA 1fb3a81b8-1fb3a8bdc [ 2596 2596 0K 0K] rw-/rw- SM=COW /usr/lib/libncurses.5.4.dylib
>>> __DATA 1fbc05098-1fbc09018 [ 16K 16K 0K 0K] rw-/rw- SM=COW /usr/lib/libedit.3.dylib
>>> __OBJC_RW 1fceac000-1fd09d080 [ 1988K 1188K 4K 16K] rw-/rw- SM=COW /usr/lib/libobjc.A.dylib
>>> __DATA_DIRTY 1fd09d080-1fd09fef0 [ 12K 12K 12K 0K] rw-/rw- SM=COW /usr/lib/libobjc.A.dylib
>>> unused __DATA 1fd09fef0-1fd09ff00 [ 16 16 16 0K] rw-/rw- SM=COW on dirty page unused system shared lib __DATA
>>> __DATA_DIRTY 1fd09ff00-1fd0a1a34 [ 7K 7K 7K 0K] rw-/rw- SM=COW /usr/lib/dyld
>>> unused __DATA 1fd0a1a34-1fd0a1a38 [ 4 4 4 0K] rw-/rw- SM=COW on dirty page unused system shared lib __DATA
>>> __DATA_DIRTY 1fd0a1a38-1fd0a1c30 [ 504 504 504 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_blocks.dylib
>>> __DATA_DIRTY 1fd0a1c30-1fd0a2720 [ 2800 2800 2800 0K] rw-/rw- SM=COW /usr/lib/system/libxpc.dylib
>>> __DATA_DIRTY 1fd0a2720-1fd0a2b90 [ 1136 1136 1136 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_trace.dylib
>>> __DATA_DIRTY 1fd0a2b90-1fd0a2c68 [ 216 216 216 0K] rw-/rw- SM=COW /usr/lib/system/libcorecrypto.dylib
>>> __DATA_DIRTY 1fd0a2c68-1fd0a2e80 [ 536 536 536 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_malloc.dylib
>>> __DATA_DIRTY 1fd0a2e80-1fd0a6828 [ 14K 4K 4K 10K] rw-/rw- SM=COW /usr/lib/system/libdispatch.dylib
>>> __DATA_DIRTY 1fd0a6828-1fd0a6838 [ 16 0K 0K 16] rw-/rw- SM=COW /usr/lib/system/libsystem_featureflags.dylib
>>> __DATA_DIRTY 1fd0a6838-1fd0a93c0 [ 11K 0K 0K 11K] rw-/rw- SM=COW /usr/lib/system/libsystem_c.dylib
>>> __DATA_DIRTY 1fd0a93c0-1fd0aa590 [ 4K 0K 0K 4K] rw-/rw- SM=COW /usr/lib/libc++.1.dylib
>>> __DATA_DIRTY 1fd0aa590-1fd0aa5b8 [ 40 0K 0K 40] rw-/rw- SM=COW /usr/lib/libc++abi.dylib
>>> __DATA_DIRTY 1fd0aa5b8-1fd0aac8c [ 1748 0K 0K 1748] rw-/rw- SM=COW /usr/lib/system/libsystem_kernel.dylib
>>> unused __DATA 1fd0aac8c-1fd0ac000 [ 5K 0K 0K 5K] rw-/rw- SM=COW on dirty page unused system shared lib __DATA
>>> __DATA_DIRTY 1fd0ac000-1fd0b1838 [ 22K 0K 0K 22K] rw-/rw- SM=COW /usr/lib/system/libsystem_pthread.dylib
>>> __DATA_DIRTY 1fd0b1838-1fd0b1858 [ 32 0K 0K 32] rw-/rw- SM=COW /usr/lib/system/libdyld.dylib
>>> __DATA_DIRTY 1fd0b1858-1fd0b186c [ 20 0K 0K 20] rw-/rw- SM=COW /usr/lib/system/libsystem_platform.dylib
>>> unused __DATA 1fd0b186c-1fd0b1870 [ 4 0K 0K 4] rw-/rw- SM=COW on dirty page unused system shared lib __DATA
>>> __DATA_DIRTY 1fd0b1870-1fd0b1b00 [ 656 0K 0K 656] rw-/rw- SM=COW /usr/lib/system/libsystem_info.dylib
>>> unused __DATA_DIRTY 1fd0b1b00-1fd0b4000 [ 9K 0K 0K 9K] rw-/rw- SM=COW ...ary/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
>>> unused __DATA_DIRTY 1fd0c4000-1fd0c4200 [ 512 0K 0K 512] rw-/rw- SM=COW ...m/Library/Frameworks/CoreDisplay.framework/Versions/A/CoreDisplay
>>> unused __DATA_DIRTY 1fd0c4200-1fd0c4320 [ 288 0K 0K 288] rw-/rw- SM=COW ...Frameworks/AudioToolboxCore.framework/Versions/A/AudioToolboxCore
>>> unused __DATA_DIRTY 1fd0c4320-1fd0c4b28 [ 2056 0K 0K 2056] rw-/rw- SM=COW .../System/Library/Frameworks/CoreText.framework/Versions/A/CoreText
>>> unused __DATA_DIRTY 1fd0c4b28-1fd0c4e50 [ 808 0K 0K 808] rw-/rw- SM=COW ...ystem/Library/Frameworks/CoreAudio.framework/Versions/A/CoreAudio
>>> unused __DATA_DIRTY 1fd0c4e50-1fd0c6300 [ 5K 0K 0K 5K] rw-/rw- SM=COW .../System/Library/Frameworks/Security.framework/Versions/A/Security
>>> __DATA_DIRTY 1fd0c6300-1fd0c7a60 [ 6K 0K 0K 6K] rw-/rw- SM=COW /usr/lib/libicucore.A.dylib
>>> __DATA_DIRTY 1fd0c7a60-1fd0c7a90 [ 48 0K 0K 48] rw-/rw- SM=COW /usr/lib/system/libsystem_darwin.dylib
>>> unused __DATA_DIRTY 1fd0c7a90-1fd0c8000 [ 1392 0K 0K 1392] rw-/rw- SM=COW .../Versions/A/Frameworks/CarbonCore.framework/Versions/A/CarbonCore
>>> __DATA_DIRTY 1fd0cab18-1fd0cab20 [ 8 8 0K 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_notify.dylib
>>> __DATA_DIRTY 1fd0fe3a8-1fd0fe3e8 [ 64 64 0K 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_networkextension.dylib
>>> __DATA_DIRTY 1fd0ffa90-1fd0ffbec [ 348 348 0K 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_asl.dylib
>>> __DATA_DIRTY 1fd10a9d0-1fd10a9e0 [ 16 16 0K 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_symptoms.dylib
>>> unused __DATA_DIRTY 1fd5a4000-1fd5a4ccc [ 3276 0K 0K 3276] rw-/rw- SM=COW ...orks/GPUCompiler.framework/Versions/31001/Libraries/libLLVM.dylib
>>> unused __DATA 1fd5a4ccc-1fd5a4cd0 [ 4 0K 0K 4] rw-/rw- SM=COW on dirty page unused system shared lib __DATA
>>> unused __DATA_DIRTY 1fd5a4cd0-1fd5a5614 [ 2372 0K 0K 2372] rw-/rw- SM=COW ...piler.framework/Versions/31001/Libraries/libGPUCompilerImpl.dylib
>>> unused __DATA 1fd5a5614-1fd5a5618 [ 4 0K 0K 4] rw-/rw- SM=COW on dirty page unused system shared lib __DATA
>>> unused __DATA_DIRTY 1fd5a5618-1fd5a58e8 [ 720 0K 0K 720] rw-/rw- SM=COW ...ks/GPUCompiler.framework/Versions/A/Libraries/libairutility.dylib
>>> unused __DATA_DIRTY 1fd5a58e8-1fd5a5918 [ 48 0K 0K 48] rw-/rw- SM=COW ...rivateFrameworks/MTLCompiler.framework/Versions/31001/MTLCompiler
>>> unused __DATA 1fd5a5918-1fd5a5920 [ 8 0K 0K 8] rw-/rw- SM=COW on dirty page unused system shared lib __DATA
>>> unused __DATA_DIRTY 1fd5a5920-1fd5a7570 [ 7K 0K 0K 7K] rw-/rw- SM=COW .../OpenGL.framework/Versions/A/Libraries/libGLProgrammability.dylib
>>> unused __DATA_DIRTY 1fd5a7570-1fd5a7578 [ 8 0K 0K 8] rw-/rw- SM=COW ...rary/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib
>>> __AUTH 1fd5a7578-1fd5a75f0 [ 120 0K 0K 120] rw-/rw- SM=COW /usr/lib/libobjc.A.dylib
>>> unused __DATA 1fd5a75f0-1fd5a7600 [ 16 0K 0K 16] rw-/rw- SM=COW on dirty page unused system shared lib __DATA
>>> __DATA 1fd5a7600-1fd5aa1cc [ 11K 0K 0K 11K] rw-/rw- SM=COW /usr/lib/dyld
>>> unused __DATA 1fd5aa1cc-1fd5aa1d0 [ 4 0K 0K 4] rw-/rw- SM=COW on dirty page unused system shared lib __DATA
>>> __AUTH 1fd5aa1d0-1fd5aa388 [ 440 0K 0K 440] rw-/rw- SM=COW /usr/lib/system/libsystem_trace.dylib
>>> __AUTH 1fd5aa388-1fd5aa418 [ 144 0K 0K 144] rw-/rw- SM=COW /usr/lib/system/libcorecrypto.dylib
>>> unused __DATA 1fd5aa418-1fd5ac000 [ 7K 0K 0K 7K] rw-/rw- SM=COW on dirty page unused system shared lib __DATA
>>> __AUTH 1fd5ac000-1fd5b4000 [ 32K 32K 0K 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_malloc.dylib
>>> __DATA 1fd5b4000-1fd5b5340 [ 5K 5K 0K 0K] rw-/rw- SM=COW /usr/lib/system/libdispatch.dylib
>>> __AUTH 1fd5b5340-1fd5b6058 [ 3352 3352 0K 0K] rw-/rw- SM=COW /usr/lib/system/libsystem_c.dylib
>>> __AUTH 1fd5b6058-1fd5b84f0 [ 9K 8K 0K 1264] rw-/rw- SM=COW /usr/lib/libc++.1.dylib
>>> __AUTH 1fd5b84f0-1fd5b8538 [ 72 0K 0K 72] rw-/rw- SM=COW /usr/lib/libc++abi.dylib
>>> __AUTH 1fd5b8538-1fd5b8588 [ 80 0K 0K 80] rw-/rw- SM=COW /usr/lib/system/libdyld.dylib
>>> __AUTH 1fd5b8588-1fd5b8758 [ 464 0K 0K 464] rw-/rw- SM=COW /usr/lib/system/libsystem_info.dylib
>>> unused __AUTH 1fd5b8758-1fd5b94c8 [ 3440 0K 0K 3440] rw-/rw- SM=COW ...ary/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
>>> unused __DATA 1fd5b94c8-1fd5bc000 [ 11K 0K 0K 11K] rw-/rw- SM=COW ...ary/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
>>> __AUTH 1fd653e70-1fd653e90 [ 32 32 0K 0K] rw-/rw- SM=COW /usr/lib/system/libcommonCrypto.dylib
>>> __AUTH 1fd653e90-1fd653e98 [ 8 8 0K 0K] rw-/rw- SM=COW /usr/lib/libSystem.B.dylib
>>> __AUTH 1fd7dece8-1fd7ded00 [ 24 24 0K 0K] rw-/rw- SM=COW /usr/lib/libncurses.5.4.dylib
>>> __AUTH 1fdddb9b8-1fdddb9c8 [ 16 0K 0K 0K] rw-/rw- SM=COW /usr/lib/libedit.3.dylib
>>> WebKit Malloc 300000000-308000000 [128.0M 0K 0K 16K] rw-/rwx SM=COW
>>> WebKit Malloc (reserved) 308000000-400000000 [ 3.9G 0K 0K 0K] rw-/rwx SM=NUL reserved VM address space (unallocated)
>>> JS VM Gigacage (reserved 7000000000-7038000000 [896.0M 0K 0K 0K] rw-/rwx SM=NUL reserved VM address space (unallocated)
>>> JS VM Gigacage 7038000000-7040000000 [128.0M 0K 0K 16K] rw-/rwx SM=PRV
>>> JS VM Gigacage (reserved 7040000000-7800000000 [ 31.0G 0K 0K 0K] rw-/rwx SM=NUL reserved VM address space (unallocated)
>>> JS VM Gigacage (reserved 8000000000-8400000000 [ 16.0G 0K 0K 0K] rw-/rwx SM=NUL reserved VM address space (unallocated)
>>> MALLOC_NANO 600000000000-600008000000 [128.0M 80K 80K 224K] rw-/rwx SM=PRV DefaultMallocZone_0x100124000
>>> MALLOC_NANO (empty) 600008000000-600020000000 [384.0M 0K 0K 0K] rw-/rwx SM=NUL
>>>
>>> ==== Legend
>>> SM=sharing mode:
>>> COW=copy_on_write PRV=private NUL=empty ALI=aliased
>>> SHM=shared ZER=zero_filled S/A=shared_alias
>>> PURGE=purgeable mode:
>>> V=volatile N=nonvolatile E=empty otherwise is unpurgeable
>>>
>>> ==== Summary for process 94428
>>> ReadOnly portion of Libraries: Total=802.1M resident=45.1M(6%) swapped_out_or_unallocated=757.0M(94%)
>>> Writable regions: Total=53.2G written=1696K(0%) resident=320K(0%) swapped_out=1456K(0%) unallocated=53.2G(100%)
>>>
>>> VIRTUAL RESIDENT DIRTY SWAPPED VOLATILE NONVOL EMPTY REGION
>>> REGION TYPE SIZE SIZE SIZE SIZE SIZE SIZE SIZE COUNT (non-coalesced)
>>> =========== ======= ======== ===== ======= ======== ====== ===== =======
>>> JS JIT generated code 512.0M 0K 0K 16K 0K 0K 0K 3
>>> JS VM Gigacage 32.1G 0K 0K 16K 0K 0K 0K 2
>>> JS VM Gigacage (reserved) 47.9G 0K 0K 0K 0K 0K 0K 3 reserved VM address space (unallocated)
>>> Kernel Alloc Once 32K 0K 0K 16K 0K 0K 0K 1
>>> MALLOC guard page 96K 0K 0K 0K 0K 0K 0K 5
>>> MALLOC metadata 176K 144K 144K 32K 0K 0K 0K 8
>>> MALLOC_NANO 128.0M 80K 80K 224K 0K 0K 0K 1 see MALLOC ZONE table below
>>> MALLOC_NANO (empty) 384.0M 0K 0K 0K 0K 0K 0K 1 see MALLOC ZONE table below
>>> MALLOC_SMALL 8192K 16K 16K 16K 0K 0K 0K 1 see MALLOC ZONE table below
>>> MALLOC_TINY 1024K 32K 32K 0K 0K 0K 0K 1 see MALLOC ZONE table below
>>> STACK GUARD 56.0M 0K 0K 0K 0K 0K 0K 2
>>> Stack 8720K 16K 16K 32K 0K 0K 0K 2
>>> WebKit Malloc 320.1M 80K 80K 1008K 0K 0K 0K 5
>>> WebKit Malloc (reserved) 3.9G 0K 0K 0K 0K 0K 0K 1 reserved VM address space (unallocated)
>>> __AUTH 46K 43K 0K 2584 0K 0K 0K 13
>>> __AUTH_CONST 145K 145K 0K 0K 0K 0K 0K 41
>>> __DATA 408K 110K 0K 250K 0K 0K 0K 43
>>> __DATA_CONST 552K 408K 0K 0K 0K 0K 0K 44
>>> __DATA_DIRTY 84K 28K 28K 56K 0K 0K 0K 23
>>> __LINKEDIT 773.1M 34.8M 0K 0K 0K 0K 0K 3
>>> __OBJC_CONST 11K 11K 0K 0K 0K 0K 0K 5
>>> __OBJC_RO 65.5M 31.1M 0K 0K 0K 0K 0K 1
>>> __OBJC_RW 1988K 1188K 4K 16K 0K 0K 0K 1
>>> __TEXT 29.0M 10.3M 16K 16K 0K 0K 0K 50
>>> dyld private memory 256K 32K 32K 16K 0K 0K 0K 1
>>> shared memory 16K 16K 16K 0K 0K 0K 0K 1
>>> unused but dirty shlib __DATA 92K 16K 16K 75K 0K 0K 0K 30
>>> =========== ======= ======== ===== ======= ======== ====== ===== =======
>>> TOTAL 86.1G 78.5M 480K 1792K 0K 0K 0K 292
>>> TOTAL, minus reserved VM space 34.4G 78.5M 480K 1792K 0K 0K 0K 292
>>>
>>> VIRTUAL RESIDENT DIRTY SWAPPED ALLOCATION BYTES DIRTY+SWAP REGION
>>> MALLOC ZONE SIZE SIZE SIZE SIZE COUNT ALLOCATED FRAG SIZE % FRAG COUNT
>>> =========== ======= ========= ========= ========= ========= ========= ========= ====== ======
>>> DefaultMallocZone_0x100124000 128.0M 80K 80K 224K 216 10K 294K 97% 1
>>> MallocHelperZone_0x1000e8000 9216K 48K 48K 16K 2 2064 62K 97% 2
>>> =========== ======= ========= ========= ========= ========= ========= ========= ====== ======
>>> TOTAL 137.0M 128K 128K 240K 218 12K 356K 97% 3
>>>
>>>
>>>
>>> -Laurence
>>>
>>> On Mar 28, 2023 at 3:49:28 PM, Michael Saboff <msaboff at apple.com <mailto:msaboff at apple.com>> wrote:
>>>> Laurence,
>>>>
>>>> It grabbed the correct JavaScriptCore framework, so the issue is something else.
>>>>
>>>> After the crash, provide the output of the lldb “bt” command, Also, after it crashes in another terminal window run the command “vmmap jsc”. This will give the memory regions of the process and allow you to see what memory region the faulting address is in, in the output below that is 0x10d5ac000,
>>>>
>>>> - Michael
>>>>
>>>>> On Mar 28, 2023, at 3:02 PM, Laurence Rowe <l at lrowe.co.uk <mailto:l at lrowe.co.uk>> wrote:
>>>>>
>>>>> Here is the lldb image list output. It seems to be the same whether I specify DYLD_FRAMEWORK_PATH or not:
>>>>>
>>>>> lrowe at Laurences-MacBook-Air WebKit % DYLD_FRAMEWORK_PATH=/Users/lrowe/scratch/WebKit/WebKitBuild/Release lldb ./WebKitBuild/Release/bin/jsc
>>>>> (lldb) target create "./WebKitBuild/Release/bin/jsc"
>>>>> Current executable set to '/Users/lrowe/scratch/WebKit/WebKitBuild/Release/bin/jsc' (arm64).
>>>>>
>>>>> (lldb) run
>>>>> Process 91742 launched: '/Users/lrowe/scratch/WebKit/WebKitBuild/Release/bin/jsc' (arm64)
>>>>> Process 91742 stopped
>>>>> * thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=2, address=0x10d5ac000)
>>>>> frame #0: 0x00000001a1b43f78 libsystem_platform.dylib`_platform_memmove + 168
>>>>> libsystem_platform.dylib`:
>>>>> -> 0x1a1b43f78 <+168>: stp q2, q3, [x0]
>>>>> 0x1a1b43f7c <+172>: subs x2, x2, #0x40
>>>>> 0x1a1b43f80 <+176>: b.ls <http://b.ls/> 0x1a1b43f9c ; <+204>
>>>>> 0x1a1b43f84 <+180>: stp q0, q1, [x3]
>>>>> Target 0: (jsc) stopped.
>>>>>
>>>>> (lldb) image list
>>>>> [ 0] 064A1932-6DA6-30DA-AAE0-6E48255D19E9 0x0000000100000000 /Users/lrowe/scratch/WebKit/WebKitBuild/Release/bin/jsc
>>>>> [ 1] 191E84F1-4B95-39C8-B253-1C1EF56C0FA8 0x00000001a17e6000 /usr/lib/dyld
>>>>> [ 2] 2965B7D1-7C3C-3AC2-BF1B-C787A98082F0 0x0000000101b38000 /Users/lrowe/scratch/WebKit/WebKitBuild/Release/lib/JavaScriptCore.framework/Versions/1.0.0/JavaScriptCore
>>>>> [ 3] C317087F-0609-39AA-844D-9378CB52F508 0x00000001e381e000 /usr/lib/libedit.3.dylib
>>>>> [ 4] 61BADBC5-2602-32FD-A771-1A5DF3E268B6 0x00000001c70d3000 /usr/lib/libncurses.5.4.dylib
>>>>> [ 5] 75D125D4-CB3B-3D71-B5A9-454DE0731FEB 0x00000001ad1cc000 /usr/lib/libSystem.B.dylib
>>>>> [ 6] 671A562C-829A-378C-92D5-68BF20D9B10D 0x00000001ad1c6000 /usr/lib/system/libcache.dylib
>>>>> [ 7] 83AB18AB-518C-33A3-9401-9811A372021D 0x00000001ad17f000 /usr/lib/system/libcommonCrypto.dylib
>>>>> [ 8] 1045AD14-6370-3C2B-8B00-8C4C10610516 0x00000001ad1ad000 /usr/lib/system/libcompiler_rt.dylib
>>>>> [ 9] E5136197-CE86-3F9D-82FD-85127BF03D8F 0x00000001ad1a3000 /usr/lib/system/libcopyfile.dylib
>>>>> [ 10] B315532A-683B-36D0-9EAB-43B5BB417CB6 0x00000001a18d4000 /usr/lib/system/libcorecrypto.dylib
>>>>> [ 11] 4D52C3A5-32E6-37A2-9D6C-23C612038354 0x00000001a198a000 /usr/lib/system/libdispatch.dylib
>>>>> [ 12] 3ECAE184-B3F4-38BA-A9F3-629F01DAA4D3 0x00000001a1b1c000 /usr/lib/system/libdyld.dylib
>>>>> [ 13] 3FEBE2F0-6CDF-3D7F-9B65-4D0D1C39C49F 0x00000001ad1bc000 /usr/lib/system/libkeymgr.dylib
>>>>> [ 14] 48DD5AF4-3485-3705-BCEE-1EF259F40AE8 0x00000001ad15d000 /usr/lib/system/libmacho.dylib
>>>>> [ 15] EA65D28B-25C1-39EE-A71E-91B940DE96B5 0x00000001ac81b000 /usr/lib/system/libquarantine.dylib
>>>>> [ 16] 39212493-0C60-3913-BA8F-DE930523BA84 0x00000001ad1b9000 /usr/lib/system/libremovefile.dylib
>>>>> [ 17] 97E87061-20ED-3FA4-A5D2-5AA78A2AA0DB 0x00000001a67e4000 /usr/lib/system/libsystem_asl.dylib
>>>>> [ 18] DC0068A7-D49A-34B6-A296-6CA3913D9467 0x00000001a1871000 /usr/lib/system/libsystem_blocks.dylib
>>>>> [ 19] 14CD841B-0C7B-34A2-A342-CC6796EF9259 0x00000001a19d5000 /usr/lib/system/libsystem_c.dylib
>>>>> [ 20] B5DCE8FF-ACAD-3FA2-AA13-09CF57E260B8 0x00000001ad1b1000 /usr/lib/system/libsystem_collections.dylib
>>>>> [ 21] CC84D310-8C96-3321-8DC7-46CCB412546C 0x00000001abd3b000 /usr/lib/system/libsystem_configuration.dylib
>>>>> [ 22] 9D25ADF2-0895-323A-9274-DC4BBA3E3E93 0x00000001aadaa000 /usr/lib/system/libsystem_containermanager.dylib
>>>>> [ 23] 84CD7D6F-D943-3988-BED8-7D0759C412A3 0x00000001ace5c000 /usr/lib/system/libsystem_coreservices.dylib
>>>>> [ 24] 3298B664-57B0-3F23-841F-787D8934187E 0x00000001a4975000 /usr/lib/system/libsystem_darwin.dylib
>>>>> [ 25] 287985EB-DCA6-3851-887A-F6DF5A99F220 0x00000001ad1bd000 /usr/lib/system/libsystem_dnssd.dylib
>>>>> [ 26] F8C4FA4C-C898-379D-8275-4D67C026F041 0x00000001a19d2000 /usr/lib/system/libsystem_featureflags.dylib
>>>>> [ 27] 0B8128B1-BE39-33DE-AA69-9FC1BF3C4F7B 0x00000001a1b48000 /usr/lib/system/libsystem_info.dylib
>>>>> [ 28] 1CE3B16D-4433-3A27-8978-94C653F7B6EE 0x00000001ad124000 /usr/lib/system/libsystem_m.dylib
>>>>> [ 29] FA535B05-4593-3A78-93D7-7BCFF7431DF6 0x00000001a195e000 /usr/lib/system/libsystem_malloc.dylib
>>>>> [ 30] F32A2564-6ED1-3DB9-8987-DCF48DBB8BE1 0x00000001a6764000 /usr/lib/system/libsystem_networkextension.dylib
>>>>> [ 31] C6B67595-08FF-3268-A400-0C0C89F541A8 0x00000001a4ddf000 /usr/lib/system/libsystem_notify.dylib
>>>>> [ 32] 4593512A-A84B-3D4A-B95A-860679313411 0x00000001abd40000 /usr/lib/system/libsystem_sandbox.dylib
>>>>> [ 33] 09FD13E7-266A-38B8-B797-EA32EDFBFB7F 0x00000001ad1b6000 /usr/lib/system/libsystem_secinit.dylib
>>>>> [ 34] 3DCD49B9-B3C5-3D90-BE40-A3B807CB9CD7 0x00000001a1ad5000 /usr/lib/system/libsystem_kernel.dylib
>>>>> [ 35] 4CF75103-429D-3AAE-BA13-2C1F67E47DBB 0x00000001a1b40000 /usr/lib/system/libsystem_platform.dylib
>>>>> [ 36] 9F3B729A-ED04-3E65-ADAC-D75AD06EBBDC 0x00000001a1b0f000 /usr/lib/system/libsystem_pthread.dylib
>>>>> [ 37] FFDC0C2D-5E65-32F7-B687-99313DD7CCD0 0x00000001a7fb9000 /usr/lib/system/libsystem_symptoms.dylib
>>>>> [ 38] E71E8D9E-3A87-33E0-B198-31666F5A6FF1 0x00000001a18ba000 /usr/lib/system/libsystem_trace.dylib
>>>>> [ 39] 3C7E16C5-77E1-3F26-B016-63D485708187 0x00000001ad190000 /usr/lib/system/libunwind.dylib
>>>>> [ 40] 413746C4-9C63-3DC4-A7C4-BBE90CF7D6B3 0x00000001a1876000 /usr/lib/system/libxpc.dylib
>>>>> [ 41] 871CF1B2-BA2C-385B-8F92-E41F4966C38D 0x00000001a1abd000 /usr/lib/libc++abi.dylib
>>>>> [ 42] 951F5871-2D10-31AC-999D-7584AD121FA6 0x00000001a17a0000 /usr/lib/libobjc.A.dylib
>>>>> [ 43] 01904D2A-57A5-3B53-8751-D6CBCA281FF3 0x00000001ad19b000 /usr/lib/liboah.dylib
>>>>> [ 44] E2679357-B2AF-30D4-8130-50D31765AF88 0x00000001a1a56000 /usr/lib/libc++.1.dylib
>>>>> [ 45] AFE750D8-70E2-3DD8-9822-4CD1285CDA39 0x00000001a46be000 /usr/lib/libicucore.A.dylib
>>>>>
>>>>> Laurence
>>>>>
>>>>> On Mar 28, 2023 at 8:13:55 AM, Michael Saboff <msaboff at apple.com <mailto:msaboff at apple.com>> wrote:
>>>>>> Laurence,
>>>>>>
>>>>>> When you try to run the jsc command, are you setting DYLD_FRAMEWORK_PATH to the location of the built frameworks? You can either set it and export it in your shell environment, e.g.
>>>>>>
>>>>>> % export DYLD_FRAMEWORK_PATH=/Users/lrowe/scratch/WebKit/WebKitBuild/Release
>>>>>>
>>>>>> Or prepend the setting of it in your command string:
>>>>>>
>>>>>> % DYLD_FRAMEWORK_PATH=/Users/lrowe/scratch/WebKit/WebKitBuild/Release lldb ./WebKitBuild/Release/bin/jsc
>>>>>>
>>>>>> I that doesn’t work, a backtrace at the time of the crash and the output of the lldb command “image list” would be helpful.
>>>>>>
>>>>>> - Michael
>>>>>>
>>>>>>
>>>>>>> On Mar 27, 2023, at 11:11 PM, Laurence Rowe via webkit-dev <webkit-dev at lists.webkit.org <mailto:webkit-dev at lists.webkit.org>> wrote:
>>>>>>>
>>>>>>> Hi, I’m trying to build jsc on my M1 Mac following the instructions at https://trac.webkit.org/wiki/JSCOnly and https://webkit.org/getting-started/ . However when I run the built binary it exits immediately with a bus error which lldb shows to be EXC_BAD_ACCESS.
>>>>>>>
>>>>>>> lrowe at Laurences-MacBook-Air WebKit % git reset --hard origin/main
>>>>>>> HEAD is now at b2362a5d6b [UI-side compositing] Safari occasionally crashes when scrolling underneath `NSScrollerImpPair` https://bugs.webkit.org/show_bug.cgi?id=254484 rdar://107139674
>>>>>>> lrowe at Laurences-MacBook-Air WebKit % git clean -Xf
>>>>>>> lrowe at Laurences-MacBook-Air WebKit % sudo xcode-select -s /Applications/Xcode.app/Contents/Developer
>>>>>>> lrowe at Laurences-MacBook-Air WebKit % Tools/Scripts/build-jsc --jsc-only
>>>>>>> # build log below
>>>>>>> lrowe at Laurences-MacBook-Air WebKit % ./WebKitBuild/Release/bin/jsc
>>>>>>> zsh: bus error ./WebKitBuild/Release/bin/jsc
>>>>>>>
>>>>>>> lrowe at Laurences-MacBook-Air WebKit % lldb ./WebKitBuild/Release/bin/jsc
>>>>>>> (lldb) target create "./WebKitBuild/Release/bin/jsc"
>>>>>>> Current executable set to '/Users/lrowe/scratch/WebKit/WebKitBuild/Release/bin/jsc' (arm64).
>>>>>>> (lldb) run
>>>>>>> Process 73062 launched: '/Users/lrowe/scratch/WebKit/WebKitBuild/Release/bin/jsc' (arm64)
>>>>>>> Process 73062 stopped
>>>>>>> * thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=2, address=0x10d5ac000)
>>>>>>> frame #0: 0x00000001a1b43f78 libsystem_platform.dylib`_platform_memmove + 168
>>>>>>> libsystem_platform.dylib`:
>>>>>>> -> 0x1a1b43f78 <+168>: stp q2, q3, [x0]
>>>>>>> 0x1a1b43f7c <+172>: subs x2, x2, #0x40
>>>>>>> 0x1a1b43f80 <+176>: b.ls <http://b.ls/> 0x1a1b43f9c ; <+204>
>>>>>>> 0x1a1b43f84 <+180>: stp q0, q1, [x3]
>>>>>>> Target 0: (jsc) stopped.
>>>>>>>
>>>>>>> Versions:
>>>>>>> WebKit main (b2362a5d6b)
>>>>>>> Xcode 14.2 (14C18)
>>>>>>> macOS 13.2.1
>>>>>>> CMake.app 3.26.1 (not mentioned at https://webkit.org/build-tools/ but required)
>>>>>>>
>>>>>>> I’ve also tried variously with Xcode command line tools, homebrew cmake, WebKit tag WebKit-7615.1.26.10.23, and adding the —debug flag to the build but I see the same error.
>>>>>>>
>>>>>>> Is there anything else I should be doing to build jsc?
>>>>>>>
>>>>>>> Thanks,
>>>>>>>
>>>>>>> Laurence Rowe
>>>>>>>
>>>>>>>
>>>>>>> # build log
>>>>>>> + cmake --build /Users/lrowe/scratch/WebKit/WebKitBuild/Release --config Release -- jsc testb3 testair testapi testmasm testdfg -j8
>>>>>>> [ 0%] Built target JavaScriptCore_CopyHeaders
>>>>>>> [ 1%] Built target JavaScriptCoreSharedScripts
>>>>>>> [ 1%] Built target JSCBuiltins
>>>>>>> [ 1%] Built target Bytecodes
>>>>>>> [ 35%] Built target WTF_CopyHeaders
>>>>>>> [ 38%] Built target bmalloc_CopyHeaders
>>>>>>> [ 46%] Built target bmalloc
>>>>>>> [ 53%] Built target WTF
>>>>>>> [ 53%] Built target LLIntSettingsExtractor
>>>>>>> [ 53%] Building CXX object Source/JavaScriptCore/CMakeFiles/LLIntOffsetsExtractor.dir/llint/LLIntOffsetsExtractor.cpp.o
>>>>>>> [ 53%] Linking CXX executable ../../bin/LLIntOffsetsExtractor
>>>>>>> [ 53%] Built target LLIntOffsetsExtractor
>>>>>>> [ 53%] Generating ../../JavaScriptCore/DerivedSources/LLIntAssembly.h
>>>>>>> [ 53%] Building CXX object Source/JavaScriptCore/CMakeFiles/LowLevelInterpreterLib.dir/llint/LowLevelInterpreter.cpp.o
>>>>>>> [ 53%] Built target LowLevelInterpreterLib
>>>>>>> [ 53%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-f0a787a9-7.cpp.o
>>>>>>> [ 53%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-f0a787a9-11.cpp.o
>>>>>>> [ 53%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-bfc896e1-4.cpp.o
>>>>>>> [ 53%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-bfc896e1-3.cpp.o
>>>>>>> [ 53%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-bfc896e1-9.cpp.o
>>>>>>> [ 53%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/dfg/DFGSpeculativeJIT.cpp.o
>>>>>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/dfg/DFGSpeculativeJIT32_64.cpp.o
>>>>>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/dfg/DFGSpeculativeJIT64.cpp.o
>>>>>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-bfc896e1-14.cpp.o
>>>>>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-02aa2997-1.cpp.o
>>>>>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/ftl/FTLLowerDFGToB3.cpp.o
>>>>>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-ee8a7a7a-3.cpp.o
>>>>>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-0e543b66-1.cpp.o
>>>>>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-3a3c4ec0-1.cpp.o
>>>>>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-f2e18ffc-21.cpp.o
>>>>>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-f2e18ffc-34.cpp.o
>>>>>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-f2e18ffc-42.cpp.o
>>>>>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/wasm/WasmAirIRGenerator32_64.cpp.o
>>>>>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/wasm/WasmAirIRGenerator64.cpp.o
>>>>>>> [ 54%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-0284c6ac-1.cpp.o
>>>>>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/wasm/WasmBBQJIT.cpp.o
>>>>>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-15db4ad9-1.cpp.o
>>>>>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-15db4ad9-2.cpp.o
>>>>>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-15db4ad9-3.cpp.o
>>>>>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-15db4ad9-4.cpp.o
>>>>>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-15db4ad9-5.cpp.o
>>>>>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-15db4ad9-6.cpp.o
>>>>>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-15db4ad9-7.cpp.o
>>>>>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-15db4ad9-8.cpp.o
>>>>>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-15db4ad9-9.cpp.o
>>>>>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-15db4ad9-10.cpp.o
>>>>>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-15db4ad9-11.cpp.o
>>>>>>> [ 55%] Building CXX object Source/JavaScriptCore/CMakeFiles/JavaScriptCore.dir/__/__/JavaScriptCore/DerivedSources/unified-sources/UnifiedSource-15db4ad9-12.cpp.o
>>>>>>> [ 55%] Linking CXX shared library ../../lib/JavaScriptCore.framework/JavaScriptCore
>>>>>>> [ 66%] Built target JavaScriptCore
>>>>>>> [ 66%] Generating ../../JavaScriptCore/PrivateHeaders/JavaScriptCore/WasmCallee.h
>>>>>>> [100%] Built target JavaScriptCore_CopyPrivateHeaders
>>>>>>> [100%] Building CXX object Source/JavaScriptCore/shell/CMakeFiles/jsc.dir/__/jsc.cpp.o
>>>>>>> [100%] Linking CXX executable ../../../bin/jsc
>>>>>>> [100%] Built target jsc
>>>>>>> [ 0%] Built target Bytecodes
>>>>>>> [ 1%] Built target JavaScriptCoreSharedScripts
>>>>>>> [ 1%] Built target JavaScriptCore_CopyHeaders
>>>>>>> [ 1%] Built target JSCBuiltins
>>>>>>> [ 21%] Built target WTF_CopyHeaders
>>>>>>> [ 38%] Built target bmalloc_CopyHeaders
>>>>>>> [ 46%] Built target bmalloc
>>>>>>> [ 53%] Built target WTF
>>>>>>> [ 53%] Built target LLIntSettingsExtractor
>>>>>>> [ 53%] Built target LLIntOffsetsExtractor
>>>>>>> [ 53%] Built target LowLevelInterpreterLib
>>>>>>> [ 66%] Built target JavaScriptCore
>>>>>>> [100%] Built target JavaScriptCore_CopyPrivateHeaders
>>>>>>> [100%] Linking CXX executable ../../../bin/testb3
>>>>>>> [100%] Built target testb3
>>>>>>> [ 1%] Built target JavaScriptCoreSharedScripts
>>>>>>> [ 1%] Built target JavaScriptCore_CopyHeaders
>>>>>>> [ 1%] Built target Bytecodes
>>>>>>> [ 18%] Built target WTF_CopyHeaders
>>>>>>> [ 18%] Built target JSCBuiltins
>>>>>>> [ 38%] Built target bmalloc_CopyHeaders
>>>>>>> [ 46%] Built target bmalloc
>>>>>>> [ 53%] Built target WTF
>>>>>>> [ 53%] Built target LLIntSettingsExtractor
>>>>>>> [ 53%] Built target LLIntOffsetsExtractor
>>>>>>> [ 53%] Built target LowLevelInterpreterLib
>>>>>>> [ 66%] Built target JavaScriptCore
>>>>>>> [100%] Built target JavaScriptCore_CopyPrivateHeaders
>>>>>>> [100%] Linking CXX executable ../../../bin/testair
>>>>>>> [100%] Built target testair
>>>>>>> [ 0%] Built target Bytecodes
>>>>>>> [ 0%] Built target JavaScriptCore_CopyHeaders
>>>>>>> [ 1%] Built target JavaScriptCoreSharedScripts
>>>>>>> [ 1%] Built target JSCBuiltins
>>>>>>> [ 37%] Built target WTF_CopyHeaders
>>>>>>> [ 38%] Built target bmalloc_CopyHeaders
>>>>>>> [ 45%] Built target bmalloc
>>>>>>> [ 53%] Built target WTF
>>>>>>> [ 53%] Built target LLIntSettingsExtractor
>>>>>>> [ 53%] Built target LLIntOffsetsExtractor
>>>>>>> [ 53%] Built target LowLevelInterpreterLib
>>>>>>> [ 65%] Built target JavaScriptCore
>>>>>>> [ 98%] Built target JavaScriptCore_CopyPrivateHeaders
>>>>>>> [ 98%] Linking CXX executable ../../../bin/testapi
>>>>>>> [100%] Built target testapi
>>>>>>> [ 1%] Built target JavaScriptCoreSharedScripts
>>>>>>> [ 1%] Built target JavaScriptCore_CopyHeaders
>>>>>>> [ 1%] Built target JSCBuiltins
>>>>>>> [ 1%] Built target Bytecodes
>>>>>>> [ 21%] Built target bmalloc_CopyHeaders
>>>>>>> [ 38%] Built target WTF_CopyHeaders
>>>>>>> [ 45%] Built target bmalloc
>>>>>>> [ 53%] Built target WTF
>>>>>>> [ 53%] Built target LLIntSettingsExtractor
>>>>>>> [ 53%] Built target LLIntOffsetsExtractor
>>>>>>> [ 53%] Built target LowLevelInterpreterLib
>>>>>>> [ 65%] Built target JavaScriptCore
>>>>>>> [ 98%] Built target JavaScriptCore_CopyPrivateHeaders
>>>>>>> [100%] Linking CXX executable ../../../bin/testmasm
>>>>>>> [100%] Built target testmasm
>>>>>>> [ 1%] Built target JavaScriptCoreSharedScripts
>>>>>>> [ 1%] Built target JavaScriptCore_CopyHeaders
>>>>>>> [ 1%] Built target JSCBuiltins
>>>>>>> [ 1%] Built target Bytecodes
>>>>>>> [ 36%] Built target WTF_CopyHeaders
>>>>>>> [ 38%] Built target bmalloc_CopyHeaders
>>>>>>> [ 46%] Built target bmalloc
>>>>>>> [ 53%] Built target WTF
>>>>>>> [ 53%] Built target LLIntSettingsExtractor
>>>>>>> [ 53%] Built target LLIntOffsetsExtractor
>>>>>>> [ 53%] Built target LowLevelInterpreterLib
>>>>>>> [ 66%] Built target JavaScriptCore
>>>>>>> [100%] Built target JavaScriptCore_CopyPrivateHeaders
>>>>>>> [100%] Linking CXX executable ../../../bin/testdfg
>>>>>>> [100%] Built target testdfg
>>>>>>>
>>>>>>> ====================================================================
>>>>>>> JavaScriptCore is now built (01m:00s).
>>>>>>> ====================================================================
>>>>>>> _______________________________________________
>>>>>>> webkit-dev mailing list
>>>>>>> webkit-dev at lists.webkit.org <mailto:webkit-dev at lists.webkit.org>
>>>>>>> https://lists.webkit.org/mailman/listinfo/webkit-dev
>>>>>>
>>>>
>>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.webkit.org/pipermail/webkit-dev/attachments/20230328/0a8b22ec/attachment-0001.htm>
More information about the webkit-dev
mailing list