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]>
Hello,

I am able to reproduce this on macOS 10.14 (Mojave) in multiple versions 
of Ruby and in a minimal C program.

Steps to reproduce:

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

2. Install the pg gem:
    gem install pg

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

3. Execute some GSS path before and after fork:
    ruby -r pg -e '
      PG.connect(host: "localhost")
      Process.fork { PG.connect(host: "localhost") }
      Process.wait
    '

Notice that host must be a TCP address (not Unix) and gssencmode must be 
"prefer" (default is "prefer".) The version of the server doesn't appear 
to matter; I tested 10, 11, and 12.

This can also happen in `rails console` if an application initializer 
interacts with ActiveRecord or a descendant (i.e. opens a database 
connection.) Any further interaction with ActiveRecord on the console 
segfaults.

This has been reported in a variety of Ruby projects and often dismissed 
as "a PostgreSQL issue."


I found a similar trace in a Python package that interacts with the 
macOS keychain.[1] There they narrowed it to a single call, raised the 
issue upstream, and were told in-short "you can't use keychain after fork."

Based on that report, I crafted a minimal C program to make the same GSS 
call as libpq. I compiled (with deprecation warnings) and tested with 
the following:

    gcc macos-gss-crash.c -o macos-gss-crash -lgssapi_krb5
    ./macos-gss-crash

It prints:

    before gss_acquire_cred in main
    after gss_acquire_cred in main
    gss complete: true
    before gss_acquire_cred in child
    child signalled: 11

I've attached the C program and crash reports for it and the above Ruby 
snippet.

Thanks!

Chris

[1]: https://github.com/jaraco/keyring/issues/281


On 10/4/19 5:43 PM, PG Bug reporting form wrote:
> The following bug has been logged on the website:
> 
> Bug reference:      16041
> Logged by:          Mark Siemers
> Email address:      [email protected]
> PostgreSQL version: 12.0
> Operating system:   Mac OS X Mojave 10.14.6
> Description:
> 
> For further details (including crash report) see bugs filed with
> third-parties:
> Ruby - https://bugs.ruby-lang.org/issues/16239
> pgAdmin 4 - https://redmine.postgresql.org/issues/4813
> 
> The speculation from a ruby maintainer is there is an issue with GSS
> authentication on OS X.
> 
> Snippet of stack trace below:
> 7   ???                             0x0000000200000000 0 + 8589934592
> 8   com.apple.security              0x00007fff3f57c059 invocation function
> for block in
> Security::KeychainCore::StorageManager::tickleKeychain(Security::KeychainCore::KeychainImpl*)
> + 287
> 9   libdispatch.dylib               0x00007fff5fd6d63d
> _dispatch_client_callout + 8
> 10  libdispatch.dylib               0x00007fff5fd79129
> _dispatch_lane_barrier_sync_invoke_and_complete + 60
> 11  com.apple.security              0x00007fff3f57be47
> Security::KeychainCore::StorageManager::tickleKeychain(Security::KeychainCore::KeychainImpl*)
> + 441
> 12  com.apple.security              0x00007fff3f37cae2
> Security::KeychainCore::KCCursorImpl::next(Security::KeychainCore::Item&) +
> 230
> 13  com.apple.security              0x00007fff3f523c98
> Security::KeychainCore::IdentityCursor::next(Security::SecPointer<Security::KeychainCore::Identity>&)
> + 192
> 14  com.apple.security              0x00007fff3f545f2f
> SecIdentitySearchCopyNext + 145
> 15  com.apple.security              0x00007fff3f550956
> SecItemCopyMatching_osx(__CFDictionary const*, void const**) + 238
> 16  com.apple.security              0x00007fff3f553fc5 SecItemCopyMatching +
> 316
> 17  com.apple.Heimdal               0x00007fff4feae830 0x7fff4fe5c000 +
> 337968
> 18  com.apple.Heimdal               0x00007fff4fead35e hx509_certs_find +
> 67
> 19  com.apple.Heimdal               0x00007fff4fe88a6c _krb5_pk_find_cert +
> 246
> 20  com.apple.GSS                   0x00007fff364dbd8e
> _gsspku2u_acquire_cred + 386
> 21  com.apple.GSS                   0x00007fff364cb0d8 gss_acquire_cred +
> 523
> 22  libpq.5.dylib                   0x0000000112b4b77d
> pg_GSS_have_cred_cache + 54
> 23  libpq.5.dylib                   0x0000000112b39edf PQconnectPoll +
> 6377
> 24  libpq.5.dylib                   0x0000000112b36f8b connectDBComplete +
> 232
> 25  libpq.5.dylib                   0x0000000112b37112 PQconnectdb + 36
> 26  pg_ext.bundle                   0x000000011157ab01
> gvl_PQconnectdb_skeleton + 17
> 27  ruby                            0x000000010f1dfff9 call_without_gvl +
> 185
> 28  pg_ext.bundle                   0x000000011157aadd gvl_PQconnectdb +
> 45
> 29  pg_ext.bundle                   0x000000011157fcb9 pgconn_init + 121
> 30  ruby                            0x000000010f221b1c vm_call0_body + 604
>
macos-gss-crash.c (text/plain, 1 KB)
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>

#include <gssapi.h>

void check_gss_have_cred_cache(const char *procname) {
	OM_uint32   major, minor;
	gss_cred_id_t cred = GSS_C_NO_CREDENTIAL;

	printf("before gss_acquire_cred in %s\n", procname);
	major = gss_acquire_cred(&minor, GSS_C_NO_NAME, 0, GSS_C_NO_OID_SET, GSS_C_INITIATE, &cred, NULL, NULL);
	printf("after gss_acquire_cred in %s\n", procname);

	printf("gss complete: %s\n", major == GSS_S_COMPLETE ? "true" : "false");
}

int main() {
	// comment out the line below to get things to work(around)
	check_gss_have_cred_cache("main");

	pid_t childpid = fork();
	if (childpid == 0) {
		check_gss_have_cred_cache("child");
		exit(0);
	}
	else if (childpid < 0) {
		printf("fork error\n");
	}
	else {
		int status;
		wait(&status);

		if (WIFEXITED(status)) {
			printf("child exit code: %d\n", WEXITSTATUS(status));
		}
		else if (WIFSIGNALED(status)) {
			printf("child signalled: %d\n", WTERMSIG(status));
		}
		else {
			printf("unexpected wait status: %d\n", status);
		}
	}
	return 0;
}
macos-gss-crash_2019-12-03-144923.crash (text/plain, 38.7 KB)
Process:               macos-gss-crash [10423]
Path:                  /Users/USER/*/macos-gss-crash
Identifier:            macos-gss-crash
Version:               0
Code Type:             X86-64 (Native)
Parent Process:        ??? [10421]
Responsible:           macos-gss-crash [10423]
User ID:               501

Date/Time:             2019-12-03 14:49:22.884 -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:       100000 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 [10423]

VM Regions Near 0x110:
--> 
    __TEXT                 000000010fb68000-000000010fb69000 [    4K] r-x/rwx SM=COW  /Users/USER/*

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  macos-gss-crash               	0x000000010fb68d3b check_gss_have_cred_cache + 91
16  macos-gss-crash               	0x000000010fb68dc9 main + 57
17  libdyld.dylib                 	0x00007fff597133d5 start + 1

Thread 0 crashed with X86 Thread State (64-bit):
  rax: 0x0000000000000100  rbx: 0x00007f95cb50a980  rcx: 0x00007fff8ff8f440  rdx: 0x0000000000000000
  rdi: 0x00007fff8ff8f440  rsi: 0x00007f95cb50a980  rbp: 0x00007ffee0096ee0  rsp: 0x00007ffee0096e98
   r8: 0xff80004000000000   r9: 0x0000000000000000  r10: 0x00007f95cb50a980  r11: 0x0000002000000000
  r12: 0x00007ffee0096fa0  r13: 0x0000002000000000  r14: 0x00007ffee0096f40  r15: 0x0000000000000000
  rip: 0x00007fff596cfe47  rfl: 0x0000000000010206  cr2: 0x0000000000000110
  
Logical CPU:     0
Error Code:      0x00000006
Trap Number:     14


Binary Images:
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    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
    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: 25931413
    thread_create: 0
    thread_set_state: 0

VM Region Summary:
ReadOnly portion of Libraries: Total=334.8M resident=0K(0%) swapped_out_or_unallocated=334.8M(100%)
Writable regions: Total=97.8M written=0K(0%) resident=0K(0%) swapped_out=0K(0%) unallocated=97.8M(100%)
 
                                VIRTUAL   REGION 
REGION TYPE                        SIZE    COUNT (non-coalesced) 
===========                     =======  ======= 
Activity Tracing                   256K        1 
Dispatch continuations            16.0M        1 
Kernel Alloc Once                    8K        1 
MALLOC                            72.3M       13 
MALLOC guard page                   16K        4 
STACK GUARD                       56.0M        1 
Stack                             9232K        3 
Stack Guard                          8K        2 
__DATA                            15.7M      188 
__FONT_DATA                          4K        1 
__LINKEDIT                       222.4M        6 
__TEXT                           112.4M      189 
__UNICODE                          564K        1 
mapped file                       26.0M        3 
shared memory                       48K        6 
===========                     =======  ======= 
TOTAL                            530.6M      420
ruby_2019-12-03-123416.crash (text/plain, 43.3 KB)
Process:               ruby [8683]
Path:                  /Users/USER/*/ruby
Identifier:            ruby
Version:               0
Code Type:             X86-64 (Native)
Parent Process:        ruby [8681]
Responsible:           ruby [8683]
User ID:               501

Date/Time:             2019-12-03 12:34:15.802 -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: 830000 seconds
Time Since Wake:       98000 seconds

System Integrity Protection: enabled

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

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

VM Regions Near 0x110:
--> 
    __TEXT                 0000000101296000-0000000101578000 [ 2952K] r-x/rwx SM=COW  /Users/USER/*

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

Thread 0 Crashed:: Dispatch queue: com.apple.security.keychain-cache-queue
0   libsystem_kernel.dylib        	0x00007fff5984e2c6 __pthread_kill + 10
1   libsystem_pthread.dylib       	0x00007fff59909bf1 pthread_kill + 284
2   libsystem_c.dylib             	0x00007fff597b86a6 abort + 127
3   ruby                          	0x0000000101321da9 die + 9
4   ruby                          	0x0000000101321fe4 rb_bug_context + 564
5   ruby                          	0x0000000101439791 sigsegv + 81
6   libsystem_platform.dylib      	0x00007fff598feb5d _sigtramp + 29
7   com.apple.CoreFoundation      	0x00007fff2d78600d __CFStringCreateImmutableFunnel3 + 2506
8   libdispatch.dylib             	0x00007fff596c663d _dispatch_client_callout + 8
9   libdispatch.dylib             	0x00007fff596d2129 _dispatch_lane_barrier_sync_invoke_and_complete + 60
10  com.apple.security            	0x00007fff38ed4e47 Security::KeychainCore::StorageManager::tickleKeychain(Security::KeychainCore::KeychainImpl*) + 441
11  com.apple.security            	0x00007fff38cd5ae2 Security::KeychainCore::KCCursorImpl::next(Security::KeychainCore::Item&) + 230
12  com.apple.security            	0x00007fff38e7cc98 Security::KeychainCore::IdentityCursor::next(Security::SecPointer<Security::KeychainCore::Identity>&) + 192
13  com.apple.security            	0x00007fff38e9ef2f SecIdentitySearchCopyNext + 145
14  com.apple.security            	0x00007fff38ea9956 SecItemCopyMatching_osx(__CFDictionary const*, void const**) + 238
15  com.apple.security            	0x00007fff38eacfc5 SecItemCopyMatching + 316
16  com.apple.Heimdal             	0x00007fff49807830 0x7fff497b5000 + 337968
17  com.apple.Heimdal             	0x00007fff4980635e hx509_certs_find + 67
18  com.apple.Heimdal             	0x00007fff497e1a6c _krb5_pk_find_cert + 246
19  com.apple.GSS                 	0x00007fff2fe34d8e _gsspku2u_acquire_cred + 386
20  com.apple.GSS                 	0x00007fff2fe240d8 gss_acquire_cred + 523
21  libpq.5.dylib                 	0x00000001038f86f7 pg_GSS_have_cred_cache + 54
22  libpq.5.dylib                 	0x00000001038e6ed4 PQconnectPoll + 6356
23  libpq.5.dylib                 	0x00000001038e404a connectDBComplete + 231
24  libpq.5.dylib                 	0x00000001038e41d1 PQconnectdb + 36
25  pg_ext.bundle                 	0x00000001038a4b01 gvl_PQconnectdb_skeleton + 17 (gvl_wrappers.c:13)
26  ruby                          	0x00000001014773b9 call_without_gvl + 185 (thread.c:1442)
27  pg_ext.bundle                 	0x00000001038a4add gvl_PQconnectdb + 45 (gvl_wrappers.c:14)
28  pg_ext.bundle                 	0x00000001038a9cb9 pgconn_init + 121 (pg_connection.c:276)
29  ruby                          	0x00000001014b8ecc vm_call0_body + 604 (vm_eval.c:86)
30  ruby                          	0x00000001014b7350 rb_funcallv + 624 (vm_eval.c:308)
31  ruby                          	0x00000001013b0a69 rb_class_s_new + 41 (object.c:2189)
32  ruby                          	0x00000001014c7f41 vm_call_cfunc + 353 (vm_insnhelper.c:1908)
33  ruby                          	0x00000001014ae80f vm_exec_core + 13535 (insns.def:765)
34  ruby                          	0x00000001014c29a0 rb_vm_exec + 2656
35  ruby                          	0x00000001014bbbfe rb_yield + 158 (vm.c:1155)
36  ruby                          	0x000000010132d963 rb_protect + 339 (eval.c:1034)
37  ruby                          	0x00000001013ea2ae rb_f_fork + 142 (process.c:4105)
38  ruby                          	0x00000001014c7f41 vm_call_cfunc + 353 (vm_insnhelper.c:1908)
39  ruby                          	0x00000001014ae567 vm_exec_core + 12855 (insns.def:750)
40  ruby                          	0x00000001014c29a0 rb_vm_exec + 2656
41  ruby                          	0x000000010132cfb6 ruby_exec_internal + 230 (eval.c:266)
42  ruby                          	0x000000010132ce29 ruby_run_node + 73 (eval.c:318)
43  ruby                          	0x000000010129774d main + 93 (main.c:42)
44  libdyld.dylib                 	0x00007fff597133d5 start + 1

Thread 1:
0   libsystem_kernel.dylib        	0x00007fff5985036e poll + 10
1   ruby                          	0x0000000101480251 timer_pthread_fn + 113 (thread_pthread.c:2192)
2   libsystem_pthread.dylib       	0x00007fff599072eb _pthread_body + 126
3   libsystem_pthread.dylib       	0x00007fff5990a249 _pthread_start + 66
4   libsystem_pthread.dylib       	0x00007fff5990640d thread_start + 13

Thread 0 crashed with X86 Thread State (64-bit):
  rax: 0x0000000000000000  rbx: 0x00000001066ec5c0  rcx: 0x00007ffeee967098  rdx: 0x0000000000000000
  rdi: 0x0000000000000203  rsi: 0x0000000000000006  rbp: 0x00007ffeee9670d0  rsp: 0x00007ffeee967098
   r8: 0x00000000000130a8   r9: 0x00007fff8ffa3048  r10: 0x0000000000000000  r11: 0x0000000000000206
  r12: 0x0000000000000203  r13: 0x000000000000003a  r14: 0x0000000000000006  r15: 0x000000000000002d
  rip: 0x00007fff5984e2c6  rfl: 0x0000000000000206  cr2: 0x00007fb38246ce70
  
Logical CPU:     0
Error Code:      0x02000148
Trap Number:     133


Binary Images:
       0x101296000 -        0x101577ff3 +ruby (0) <06C6ECE8-6B5D-346A-9BC5-55EA88381E83> /Users/USER/*/ruby
       0x1017cd000 -        0x1017cdffb +wait.bundle (0) <19E3432E-A107-33A8-A9EB-4EE935605CF3> /Users/USER/*/wait.bundle
       0x1037fc000 -        0x1037fdffb +encdb.bundle (0) <AD11E233-46BC-3FD8-A225-B80A28F880DE> /Users/USER/*/encdb.bundle
       0x103800000 -        0x103801fff +transdb.bundle (0) <3263DFC6-0CC7-3FC4-81F3-1626A821CD18> /Users/USER/*/transdb.bundle
       0x103899000 -        0x10389efff +stringio.bundle (0) <EBCED5F6-5504-3AD5-BDF9-486CBDEB324D> /Users/USER/*/stringio.bundle
       0x1038a4000 -        0x1038c6ffb +pg_ext.bundle (0) <5A8EC424-1512-3EA5-B4EA-A138E9438EB0> /Users/USER/*/pg_ext.bundle
       0x1038e0000 -        0x103916ff3 +libpq.5.dylib (0) <77EC8ABC-8FD8-325E-855A-9892A213BD92> /Users/USER/*/libpq.5.dylib
       0x10392f000 -        0x10397dfff +libssl.1.1.dylib (0) <D372BA01-5861-3E27-B864-61BF3A74223A> /Users/USER/*/libssl.1.1.dylib
       0x1039a6000 -        0x103b41977 +libcrypto.1.1.dylib (0) <78A3A5E8-41CF-3A64-8632-A908C97CAEB2> /Users/USER/*/libcrypto.1.1.dylib
       0x103c33000 -        0x103c53fff +socket.bundle (0) <BC5644BD-3B6F-3149-9282-125F1B3F53DC> /Users/USER/*/socket.bundle
       0x103c64000 -        0x103c77fff +bigdecimal.bundle (0) <8F90E84C-F817-36D6-975A-C47284582BD0> /Users/USER/*/bigdecimal.bundle
       0x103c7f000 -        0x103c83ff7 +parser.bundle (0) <3B01A377-95D8-3245-AC1A-E6410BEE6D70> /Users/USER/*/parser.bundle
       0x103c87000 -        0x103c8dfff +generator.bundle (0) <76416F32-DCFD-317E-869C-BDA45508E3B2> /Users/USER/*/generator.bundle
       0x103c93000 -        0x103cd6ff3 +date_core.bundle (0) <E17A80AE-989B-373C-B587-E8A2F520FB89> /Users/USER/*/date_core.bundle
       0x103d04000 -        0x103d05fff  com.apple.heimdalodpac (10.14 - 205) <4646C8CE-435D-354E-B642-E0EDBD11FF7D> /System/Library/KerberosPlugins/KerberosFrameworkPlugins/heimdalodpac.bundle/Contents/MacOS/heimdalodpac
       0x103d0b000 -        0x103d0cffb  com.apple.kerberos.reachability (4.0 - 2.0) <E93F5903-5519-361A-AE23-BA0BD1CD5B31> /System/Library/KerberosPlugins/KerberosFrameworkPlugins/Reachability.bundle/Contents/MacOS/Reachability
       0x103d11000 -        0x103d12ff7  com.apple.kerberos.sckerberosconfig (4.0 - 1) <27BBDE1D-00E3-315F-BBCD-AE60A97CD4FF> /System/Library/KerberosPlugins/KerberosFrameworkPlugins/SCKerberosConfig.bundle/Contents/MacOS/SCKerberosConfig
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    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: 25321795
    thread_create: 0
    thread_set_state: 0

VM Region Summary:
ReadOnly portion of Libraries: Total=342.5M resident=0K(0%) swapped_out_or_unallocated=342.5M(100%)
Writable regions: Total=133.3M written=0K(0%) resident=0K(0%) swapped_out=0K(0%) unallocated=133.3M(100%)
 
                                VIRTUAL   REGION 
REGION TYPE                        SIZE    COUNT (non-coalesced) 
===========                     =======  ======= 
Activity Tracing                   256K        1 
Dispatch continuations            16.0M        1 
Kernel Alloc Once                    8K        1 
MALLOC                           107.4M       21 
MALLOC guard page                   16K        4 
STACK GUARD                       56.0M        2 
Stack                             9752K        4 
Stack Guard                          8K        2 
__DATA                            16.2M      208 
__FONT_DATA                          4K        1 
__LINKEDIT                       224.1M       19 
__TEXT                           118.4M      206 
__UNICODE                          564K        1 
mapped file                       29.8M        5 
shared memory                       48K        5 
===========                     =======  ======= 
TOTAL                            578.3M      481
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