Re: BUG #16041: Error shows up both in pgAdmin and in Ruby (pg gem) - Segmentation fault

Chris Bandy <[email protected]>
Newsgroups gmane.comp.db.postgresql.bugs
Message-ID <[email protected]>
On 12/3/19 3:33 PM, Chris Bandy wrote:
> Hello,
> 
> I am able to reproduce this on macOS 10.14 (Mojave) in multiple versions 
> of Ruby and in a minimal C program.
> 
I was also able to reproduce this with the attached Python program and 
psycopg2 package.

Steps to reproduce:

1. Install libpq for PostgreSQL 12:
    brew install postgresql@12

2. Install the psycopg2 package:
    pip install psycopg2

3. Start a PostgreSQL server:
    docker run --rm -d -p 127.0.0.1:5432:5432 postgres:12

4. Execute some GSS path before and after fork:
    python macos-gss-crash.py

It generates a crash report and prints:

    main ok
    -11

In this and the previous tests I can avoid/workaround the segfault by 
specifying gssencmode=disable.


Thanks!

Chris
macos-gss-crash.py (text/x-python-script, 301 B)
import multiprocessing
import psycopg2

def my_subprocess():
    psycopg2.connect("host=localhost gssencmode=disable")
    print('child ok')

psycopg2.connect("host=localhost gssencmode=disable")
print('main ok')

p = multiprocessing.Process(target=my_subprocess)
p.start()
p.join()
print(p.exitcode)
Python_2019-12-03-165203.crash (text/plain, 47.1 KB)
Process:               Python [11447]
Path:                  /Users/USER/*/Python.framework/Versions/3.7/Resources/Python.app/Contents/MacOS/Python
Identifier:            Python
Version:               3.7.5 (3.7.5)
Code Type:             X86-64 (Native)
Parent Process:        Python [11445]
Responsible:           Python [11447]
User ID:               501

Date/Time:             2019-12-03 16:52:03.428 -0600
OS Version:            Mac OS X 10.14.6 (18G95)
Report Version:        12
Bridge OS Version:     3.0 (14Y904)
Anonymous UUID:        44A5B9E8-8715-0E7A-5B30-64090BDE777E

Sleep/Wake UUID:       69386649-B362-4E7B-B98D-D580BBF1C7C6

Time Awake Since Boot: 840000 seconds
Time Since Wake:       110000 seconds

System Integrity Protection: enabled

Crashed Thread:        0  Dispatch queue: com.apple.security.keychain-cache-queue

Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000110
Exception Note:        EXC_CORPSE_NOTIFY

Termination Signal:    Segmentation fault: 11
Termination Reason:    Namespace SIGNAL, Code 0xb
Terminating Process:   exc handler [11447]

VM Regions Near 0x110:
--> 
    __TEXT                 000000010a43c000-000000010a43e000 [    8K] r-x/rwx SM=COW  /Users/USER/*/Python.framework/Versions/3.7/Resources/Python.app/Contents/MacOS/Python

Application Specific Information:
crashed on child side of fork pre-exec

Thread 0 Crashed:: Dispatch queue: com.apple.security.keychain-cache-queue
0   libdispatch.dylib             	0x00007fff596cfe47 _dispatch_mgr_queue_push + 41
1   com.apple.security            	0x00007fff38ed4f86 invocation function for block in Security::KeychainCore::StorageManager::tickleKeychain(Security::KeychainCore::KeychainImpl*) + 76
2   libdispatch.dylib             	0x00007fff596c663d _dispatch_client_callout + 8
3   libdispatch.dylib             	0x00007fff596d2129 _dispatch_lane_barrier_sync_invoke_and_complete + 60
4   com.apple.security            	0x00007fff38ed4e47 Security::KeychainCore::StorageManager::tickleKeychain(Security::KeychainCore::KeychainImpl*) + 441
5   com.apple.security            	0x00007fff38cd5ae2 Security::KeychainCore::KCCursorImpl::next(Security::KeychainCore::Item&) + 230
6   com.apple.security            	0x00007fff38e7cc98 Security::KeychainCore::IdentityCursor::next(Security::SecPointer<Security::KeychainCore::Identity>&) + 192
7   com.apple.security            	0x00007fff38e9ef2f SecIdentitySearchCopyNext + 145
8   com.apple.security            	0x00007fff38ea9956 SecItemCopyMatching_osx(__CFDictionary const*, void const**) + 238
9   com.apple.security            	0x00007fff38eacfc5 SecItemCopyMatching + 316
10  com.apple.Heimdal             	0x00007fff49807830 0x7fff497b5000 + 337968
11  com.apple.Heimdal             	0x00007fff4980635e hx509_certs_find + 67
12  com.apple.Heimdal             	0x00007fff497e1a6c _krb5_pk_find_cert + 246
13  com.apple.GSS                 	0x00007fff2fe34d8e _gsspku2u_acquire_cred + 386
14  com.apple.GSS                 	0x00007fff2fe240d8 gss_acquire_cred + 523
15  libpq.5.dylib                 	0x000000010ab6f6f7 pg_GSS_have_cred_cache + 54
16  libpq.5.dylib                 	0x000000010ab5ded4 PQconnectPoll + 6356
17  libpq.5.dylib                 	0x000000010ab5b04a connectDBComplete + 231
18  libpq.5.dylib                 	0x000000010ab5b1d1 PQconnectdb + 36
19  _psycopg.cpython-37m-darwin.so	0x000000010ab1b587 conn_connect + 135
20  _psycopg.cpython-37m-darwin.so	0x000000010ab1cbc0 connection_init + 336
21  org.python.python             	0x000000010a495bdc type_call + 172
22  org.python.python             	0x000000010a45a4fb _PyObject_FastCallDict + 264
23  org.python.python             	0x000000010a45ba0f _PyObject_CallFunctionVa + 209
24  org.python.python             	0x000000010a45bb70 _PyObject_CallFunction_SizeT + 129
25  _psycopg.cpython-37m-darwin.so	0x000000010ab168e0 psyco_connect + 192
26  org.python.python             	0x000000010a45ad8c PyCFunction_Call + 208
27  org.python.python             	0x000000010a4e8fde _PyEval_EvalFrameDefault + 7367
28  org.python.python             	0x000000010a4f0762 _PyEval_EvalCodeWithName + 1870
29  org.python.python             	0x000000010a45aaaf _PyFunction_FastCallKeywords + 225
30  org.python.python             	0x000000010a4efeb3 call_function + 753
31  org.python.python             	0x000000010a4e8c2c _PyEval_EvalFrameDefault + 6421
32  org.python.python             	0x000000010a45aec4 function_code_fastcall + 112
33  org.python.python             	0x000000010a4e8eff _PyEval_EvalFrameDefault + 7144
34  org.python.python             	0x000000010a45aec4 function_code_fastcall + 112
35  org.python.python             	0x000000010a4efeb3 call_function + 753
36  org.python.python             	0x000000010a4e8c13 _PyEval_EvalFrameDefault + 6396
37  org.python.python             	0x000000010a45aec4 function_code_fastcall + 112
38  org.python.python             	0x000000010a4efeb3 call_function + 753
39  org.python.python             	0x000000010a4e8c13 _PyEval_EvalFrameDefault + 6396
40  org.python.python             	0x000000010a45aec4 function_code_fastcall + 112
41  org.python.python             	0x000000010a4efeb3 call_function + 753
42  org.python.python             	0x000000010a4e8c13 _PyEval_EvalFrameDefault + 6396
43  org.python.python             	0x000000010a45aec4 function_code_fastcall + 112
44  org.python.python             	0x000000010a45b861 _PyObject_Call_Prepend + 150
45  org.python.python             	0x000000010a498f39 slot_tp_init + 80
46  org.python.python             	0x000000010a495bdc type_call + 172
47  org.python.python             	0x000000010a45a950 _PyObject_FastCallKeywords + 358
48  org.python.python             	0x000000010a4efeac call_function + 746
49  org.python.python             	0x000000010a4e8cc7 _PyEval_EvalFrameDefault + 6576
50  org.python.python             	0x000000010a45aec4 function_code_fastcall + 112
51  org.python.python             	0x000000010a4efeb3 call_function + 753
52  org.python.python             	0x000000010a4e8c2c _PyEval_EvalFrameDefault + 6421
53  org.python.python             	0x000000010a45aec4 function_code_fastcall + 112
54  org.python.python             	0x000000010a4efeb3 call_function + 753
55  org.python.python             	0x000000010a4e8c2c _PyEval_EvalFrameDefault + 6421
56  org.python.python             	0x000000010a45aec4 function_code_fastcall + 112
57  org.python.python             	0x000000010a4efeb3 call_function + 753
58  org.python.python             	0x000000010a4e8c13 _PyEval_EvalFrameDefault + 6396
59  org.python.python             	0x000000010a4f0762 _PyEval_EvalCodeWithName + 1870
60  org.python.python             	0x000000010a4e7274 PyEval_EvalCode + 51
61  org.python.python             	0x000000010a515903 run_mod + 54
62  org.python.python             	0x000000010a51492d PyRun_FileExFlags + 163
63  org.python.python             	0x000000010a513fd3 PyRun_SimpleFileExFlags + 263
64  org.python.python             	0x000000010a52c852 pymain_main + 5389
65  org.python.python             	0x000000010a52cf34 _Py_UnixMain + 56
66  libdyld.dylib                 	0x00007fff597133d5 start + 1

Thread 0 crashed with X86 Thread State (64-bit):
  rax: 0x0000000000000100  rbx: 0x00007fa5e1c4ce40  rcx: 0x00007fff8ff8f440  rdx: 0x0000000000000000
  rdi: 0x00007fff8ff8f440  rsi: 0x00007fa5e1c4ce40  rbp: 0x00007ffee57c0840  rsp: 0x00007ffee57c07f8
   r8: 0xff80004000000000   r9: 0x0000000000000000  r10: 0x00007fa5e1c4ce40  r11: 0x0000002000000000
  r12: 0x00007ffee57c0900  r13: 0x0000002000000000  r14: 0x00007ffee57c08a0  r15: 0x0000000000000000
  rip: 0x00007fff596cfe47  rfl: 0x0000000000010206  cr2: 0x0000000000000110
  
Logical CPU:     4
Error Code:      0x00000006
Trap Number:     14


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    0x7fff562ba000 -     0x7fff562bbffb  libDiagnosticMessagesClient.dylib (107) <A14D0819-0970-34CD-8680-80E4D7FE8C2C> /usr/lib/libDiagnosticMessagesClient.dylib
    0x7fff562f2000 -     0x7fff56549ff3  libFosl_dynamic.dylib (18.3.4) <1B5DD4E2-8AE0-315E-829E-D5BFCD264EA8> /usr/lib/libFosl_dynamic.dylib
    0x7fff5659a000 -     0x7fff565b9fff  libMobileGestalt.dylib (645.270.1) <99A06C8A-97D6-383D-862C-F453BABB48A4> /usr/lib/libMobileGestalt.dylib
    0x7fff565ba000 -     0x7fff565bafff  libOpenScriptingUtil.dylib (179.1) <4D603146-EDA5-3A74-9FF8-4F75D8BB9BC6> /usr/lib/libOpenScriptingUtil.dylib
    0x7fff566fa000 -     0x7fff566fbffb  libSystem.B.dylib (1252.250.1) <B1006948-7AD0-3CA9-81E0-833F4DD6BFB4> /usr/lib/libSystem.B.dylib
    0x7fff56777000 -     0x7fff56778fff  libThaiTokenizer.dylib (2.15.1) <ADB37DC3-7D9B-3E73-A72A-BCC3433C937A> /usr/lib/libThaiTokenizer.dylib
    0x7fff5678a000 -     0x7fff567a0ffb  libapple_nghttp2.dylib (1.24.1) <6F04250A-6686-3FDC-9A8D-290C64B06502> /usr/lib/libapple_nghttp2.dylib
    0x7fff567a1000 -     0x7fff567caffb  libarchive.2.dylib (54.250.1) <47289946-8504-3966-9127-6CE39993DC2C> /usr/lib/libarchive.2.dylib
    0x7fff5684e000 -     0x7fff5684eff3  libauto.dylib (187) <3E3780E1-96F3-3A22-91C5-92F9A5805518> /usr/lib/libauto.dylib
    0x7fff5691e000 -     0x7fff5692effb  libbsm.0.dylib (39.200.18) <CF381E0B-025B-364F-A83D-2527E03F1AA3> /usr/lib/libbsm.0.dylib
    0x7fff5692f000 -     0x7fff5693cfff  libbz2.1.0.dylib (38.200.3) <272953A1-8D36-329B-BDDB-E887B347710F> /usr/lib/libbz2.1.0.dylib
    0x7fff5693d000 -     0x7fff56990ff7  libc++.1.dylib (400.9.4) <9A60A190-6C34-339F-BB3D-AACE942009A4> /usr/lib/libc++.1.dylib
    0x7fff56991000 -     0x7fff569a6ff7  libc++abi.dylib (400.17) <38C09CED-9090-3719-90F3-04A2749F5428> /usr/lib/libc++abi.dylib
    0x7fff569a7000 -     0x7fff569a7ff3  libcharset.1.dylib (51.200.6) <2A27E064-314C-359C-93FC-8A9B06206174> /usr/lib/libcharset.1.dylib
    0x7fff569a8000 -     0x7fff569b8ffb  libcmph.dylib (6.15.1) <9C52B2FE-179F-32AC-B87E-2AFC49ABF817> /usr/lib/libcmph.dylib
    0x7fff569b9000 -     0x7fff569d1ffb  libcompression.dylib (52.250.2) <7F4BB18C-1FB4-3825-8D8B-6E6B168774C6> /usr/lib/libcompression.dylib
    0x7fff56c46000 -     0x7fff56c5cfff  libcoretls.dylib (155.220.1) <4C64BE3E-41E3-3020-8BB7-07E90C0C861C> /usr/lib/libcoretls.dylib
    0x7fff56c5d000 -     0x7fff56c5eff3  libcoretls_cfhelpers.dylib (155.220.1) <0959B3E9-6643-3589-8BB3-21D52CDF0EF1> /usr/lib/libcoretls_cfhelpers.dylib
    0x7fff5710a000 -     0x7fff57160ff3  libcups.2.dylib (462.12) <095619DC-9233-3937-9E50-5F10D917A40D> /usr/lib/libcups.2.dylib
    0x7fff57294000 -     0x7fff57294fff  libenergytrace.dylib (17.200.1) <80BB567A-FD18-3497-BF97-353F57D98CDD> /usr/lib/libenergytrace.dylib
    0x7fff572c6000 -     0x7fff572cbff7  libgermantok.dylib (17.15.2) <E5F0F794-FF27-3D64-AE52-C78C6A84DD67> /usr/lib/libgermantok.dylib
    0x7fff572cc000 -     0x7fff572d1ff7  libheimdal-asn1.dylib (520.270.1) <73F60D6F-76F8-35EF-9C86-9A81225EE4BE> /usr/lib/libheimdal-asn1.dylib
    0x7fff572fc000 -     0x7fff573ecfff  libiconv.2.dylib (51.200.6) <2047C9B7-3F74-3A95-810D-2ED8F0475A99> /usr/lib/libiconv.2.dylib
    0x7fff573ed000 -     0x7fff5764effb  libicucore.A.dylib (62141.0.1) <A0D63918-76E9-3C1B-B255-46F4C1DA7FE8> /usr/lib/libicucore.A.dylib
    0x7fff5769b000 -     0x7fff5769cfff  liblangid.dylib (128.15.1) <22D05C4F-769B-3075-ABCF-44A0EBACE028> /usr/lib/liblangid.dylib
    0x7fff5769d000 -     0x7fff576b5ff3  liblzma.5.dylib (10.200.3) <E1F4FD60-1CE4-37B9-AD95-29D348AF1AC0> /usr/lib/liblzma.5.dylib
    0x7fff576cd000 -     0x7fff57771ff7  libmecab.1.0.0.dylib (779.24.1) <A8D0379B-85FA-3B3D-89ED-5CF2C3826AB2> /usr/lib/libmecab.1.0.0.dylib
    0x7fff57772000 -     0x7fff57976fff  libmecabra.dylib (779.24.1) <D71F71E0-30E2-3DB3-B636-7DE13D51FB4B> /usr/lib/libmecabra.dylib
    0x7fff57b4e000 -     0x7fff57e9fff7  libnetwork.dylib (1229.250.15) <72C7E9E3-B2BE-3300-BE1B-64606222022C> /usr/lib/libnetwork.dylib
    0x7fff57f31000 -     0x7fff586b6fdf  libobjc.A.dylib (756.2) <7C312627-43CB-3234-9324-4DEA92D59F50> /usr/lib/libobjc.A.dylib
    0x7fff586c8000 -     0x7fff586ccffb  libpam.2.dylib (22.200.1) <586CF87F-349C-393D-AEEB-FB75F94A5EB7> /usr/lib/libpam.2.dylib
    0x7fff586cf000 -     0x7fff58704fff  libpcap.A.dylib (79.250.1) <C0893641-7DFF-3A33-BDAE-190FF54837E8> /usr/lib/libpcap.A.dylib
    0x7fff5881d000 -     0x7fff58835ffb  libresolv.9.dylib (65.200.2) <893142A5-F153-3437-A22D-407EE542B5C5> /usr/lib/libresolv.9.dylib
    0x7fff58873000 -     0x7fff58885ff7  libsasl2.2.dylib (211) <10987614-6763-3B5D-9F28-91D121BB4924> /usr/lib/libsasl2.2.dylib
    0x7fff58888000 -     0x7fff58a65fff  libsqlite3.dylib (274.26) <6404BA3B-BCA4-301F-B2FE-8776105A2AA3> /usr/lib/libsqlite3.dylib
    0x7fff58c7e000 -     0x7fff58c81ff7  libutil.dylib (51.200.4) <CE9B18C9-66ED-32D4-9D29-01F8FCB467B0> /usr/lib/libutil.dylib
    0x7fff58c82000 -     0x7fff58c8ffff  libxar.1.dylib (417.1) <39CCF46B-C81A-34B1-92A1-58C4E5DA846E> /usr/lib/libxar.1.dylib
    0x7fff58c94000 -     0x7fff58d76ff3  libxml2.2.dylib (32.10) <AA4E1B1F-0FDE-3274-9FA5-75446298D1AC> /usr/lib/libxml2.2.dylib
    0x7fff58d77000 -     0x7fff58d9fff3  libxslt.1.dylib (16.5) <E330D3A2-E32B-378A-973E-A8D245C0F712> /usr/lib/libxslt.1.dylib
    0x7fff58da0000 -     0x7fff58db2ff7  libz.1.dylib (70.200.4) <B048FC1F-058F-3A08-A1FE-81D5308CB3E6> /usr/lib/libz.1.dylib
    0x7fff59596000 -     0x7fff5959aff3  libcache.dylib (81) <1987D1E1-DB11-3291-B12A-EBD55848E02D> /usr/lib/system/libcache.dylib
    0x7fff5959b000 -     0x7fff595a5ff3  libcommonCrypto.dylib (60118.250.2) <1765BB6E-6784-3653-B16B-CB839721DC9A> /usr/lib/system/libcommonCrypto.dylib
    0x7fff595a6000 -     0x7fff595adff7  libcompiler_rt.dylib (63.4) <5212BA7B-B7EA-37B4-AF6E-AC4F507EDFB8> /usr/lib/system/libcompiler_rt.dylib
    0x7fff595ae000 -     0x7fff595b7ff7  libcopyfile.dylib (146.250.1) <98CD00CD-9B91-3B5C-A9DB-842638050FA8> /usr/lib/system/libcopyfile.dylib
    0x7fff595b8000 -     0x7fff5963cfc3  libcorecrypto.dylib (602.260.2) <01464D24-570C-3B83-9D18-467769E0FCDD> /usr/lib/system/libcorecrypto.dylib
    0x7fff596c3000 -     0x7fff596fcff7  libdispatch.dylib (1008.270.1) <97273678-E94C-3C8C-89F6-2E2020F4B43B> /usr/lib/system/libdispatch.dylib
    0x7fff596fd000 -     0x7fff59729ff7  libdyld.dylib (655.1.1) <002418CC-AD11-3D10-865B-015591D24E6C> /usr/lib/system/libdyld.dylib
    0x7fff5972a000 -     0x7fff5972affb  libkeymgr.dylib (30) <0D0F9CA2-8D5A-3273-8723-59987B5827F2> /usr/lib/system/libkeymgr.dylib
    0x7fff5972b000 -     0x7fff59737ff3  libkxld.dylib (4903.271.2) <FBF128C8-D3F0-36B6-983A-A63B8A3E0E52> /usr/lib/system/libkxld.dylib
    0x7fff59738000 -     0x7fff59738ff7  liblaunch.dylib (1336.261.2) <2B07E27E-D404-3E98-9D28-BCA641E5C479> /usr/lib/system/liblaunch.dylib
    0x7fff59739000 -     0x7fff5973efff  libmacho.dylib (927.0.3) <A377D608-77AB-3F6E-90F0-B4F251A5C12F> /usr/lib/system/libmacho.dylib
    0x7fff5973f000 -     0x7fff59741ffb  libquarantine.dylib (86.220.1) <6D0BC770-7348-3608-9254-F7FFBD347634> /usr/lib/system/libquarantine.dylib
    0x7fff59742000 -     0x7fff59743ff7  libremovefile.dylib (45.200.2) <9FBEB2FF-EEBE-31BC-BCFC-C71F8D0E99B6> /usr/lib/system/libremovefile.dylib
    0x7fff59744000 -     0x7fff5975bff3  libsystem_asl.dylib (356.200.4) <A62A7249-38B8-33FA-9875-F1852590796C> /usr/lib/system/libsystem_asl.dylib
    0x7fff5975c000 -     0x7fff5975cff7  libsystem_blocks.dylib (73) <A453E8EE-860D-3CED-B5DC-BE54E9DB4348> /usr/lib/system/libsystem_blocks.dylib
    0x7fff5975d000 -     0x7fff597e4fff  libsystem_c.dylib (1272.250.1) <7EDACF78-2FA3-35B8-B051-D70475A35117> /usr/lib/system/libsystem_c.dylib
    0x7fff597e5000 -     0x7fff597e8ffb  libsystem_configuration.dylib (963.270.3) <2B4A836D-68A4-33E6-8D48-CD4486B03387> /usr/lib/system/libsystem_configuration.dylib
    0x7fff597e9000 -     0x7fff597ecff7  libsystem_coreservices.dylib (66) <719F75A4-74C5-3BA6-A09E-0C5A3E5889D7> /usr/lib/system/libsystem_coreservices.dylib
    0x7fff597ed000 -     0x7fff597f3fff  libsystem_darwin.dylib (1272.250.1) <EC9B39A5-9592-3577-8997-7DC721D20D8C> /usr/lib/system/libsystem_darwin.dylib
    0x7fff597f4000 -     0x7fff597faff7  libsystem_dnssd.dylib (878.270.2) <E9A5ACCF-E35F-3909-AF0A-2A37CD217276> /usr/lib/system/libsystem_dnssd.dylib
    0x7fff597fb000 -     0x7fff59846ffb  libsystem_info.dylib (517.200.9) <D09D5AE0-2FDC-3A6D-93EC-729F931B1457> /usr/lib/system/libsystem_info.dylib
    0x7fff59847000 -     0x7fff5986fff7  libsystem_kernel.dylib (4903.271.2) <EA204E3C-870B-30DD-B4AF-D1BB66420D14> /usr/lib/system/libsystem_kernel.dylib
    0x7fff59870000 -     0x7fff598bbff7  libsystem_m.dylib (3158.200.7) <F19B6DB7-014F-3820-831F-389CCDA06EF6> /usr/lib/system/libsystem_m.dylib
    0x7fff598bc000 -     0x7fff598e6fff  libsystem_malloc.dylib (166.270.1) <011F3AD0-8E6A-3A89-AE64-6E5F6840F30A> /usr/lib/system/libsystem_malloc.dylib
    0x7fff598e7000 -     0x7fff598f1ff7  libsystem_networkextension.dylib (767.250.2) <FF06F13A-AEFE-3A27-A073-910EF78AEA36> /usr/lib/system/libsystem_networkextension.dylib
    0x7fff598f2000 -     0x7fff598f9fff  libsystem_notify.dylib (172.200.21) <145B5CFC-CF73-33CE-BD3D-E8DDE268FFDE> /usr/lib/system/libsystem_notify.dylib
    0x7fff598fa000 -     0x7fff59903fef  libsystem_platform.dylib (177.270.1) <9D1FE5E4-EB7D-3B3F-A8D1-A96D9CF1348C> /usr/lib/system/libsystem_platform.dylib
    0x7fff59904000 -     0x7fff5990eff7  libsystem_pthread.dylib (330.250.2) <2D5C08FF-484F-3D59-9132-CE1DCB3F76D7> /usr/lib/system/libsystem_pthread.dylib
    0x7fff5990f000 -     0x7fff59912ff7  libsystem_sandbox.dylib (851.270.1) <9494594B-5199-3186-82AB-5FF8BED6EE16> /usr/lib/system/libsystem_sandbox.dylib
    0x7fff59913000 -     0x7fff59915ff3  libsystem_secinit.dylib (30.260.2) <EF1EA47B-7B22-35E8-BD9B-F7003DCB96AE> /usr/lib/system/libsystem_secinit.dylib
    0x7fff59916000 -     0x7fff5991dff3  libsystem_symptoms.dylib (820.267.1) <03F1C2DD-0F5A-3D9D-88F6-B26C0F94EB52> /usr/lib/system/libsystem_symptoms.dylib
    0x7fff5991e000 -     0x7fff59933fff  libsystem_trace.dylib (906.260.1) <FC761C3B-5434-3A52-912D-F1B15FAA8EB2> /usr/lib/system/libsystem_trace.dylib
    0x7fff59935000 -     0x7fff5993affb  libunwind.dylib (35.4) <24A97A67-F017-3CFC-B0D0-6BD0224B1336> /usr/lib/system/libunwind.dylib
    0x7fff5993b000 -     0x7fff5996afff  libxpc.dylib (1336.261.2) <7DEE2300-6D8E-3C00-9C63-E3E80D56B0C4> /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: 26493223
    thread_create: 0
    thread_set_state: 0

VM Region Summary:
ReadOnly portion of Libraries: Total=340.6M resident=0K(0%) swapped_out_or_unallocated=340.6M(100%)
Writable regions: Total=110.3M written=0K(0%) resident=0K(0%) swapped_out=0K(0%) unallocated=110.3M(100%)
 
                                VIRTUAL   REGION 
REGION TYPE                        SIZE    COUNT (non-coalesced) 
===========                     =======  ======= 
Activity Tracing                   256K        1 
Dispatch continuations            16.0M        1 
Kernel Alloc Once                    8K        1 
MALLOC                            72.0M       21 
MALLOC guard page                   16K        4 
MALLOC_LARGE (reserved)            384K        2         reserved VM address space (unallocated)
STACK GUARD                          4K        1 
Stack                             17.0M        3 
Stack Guard                          8K        2 
VM_ALLOCATE                       4352K       12 
__DATA                            16.8M      214 
__FONT_DATA                          4K        1 
__LINKEDIT                       223.5M       24 
__TEXT                           117.0M      211 
__UNICODE                          564K        1 
mapped file                       26.0M        3 
shared memory                       48K        5 
===========                     =======  ======= 
TOTAL                            493.8M      507 
TOTAL, minus reserved VM space   493.4M      507
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