Heap corruption crash on darwin/arm64 #49865
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What version of Go are you using (
go version)?Does this issue reproduce with the latest release?
Yes
What operating system and processor architecture are you using (
go env)?go envOutputWhat did you do?
Was running "go test" for a project I'm working on. After switching to an Apple Silicon Macbook Pro I started experiencing random crashes. Which don't reproduce on an Intel-based Mac I was using previously.
What did you expect to see?
Should not crash.
What did you see instead?
Sometimes the tests crashed, although most of the time they pass. Hard to reproduce. Crashes are different too. Sometimes the "go test" program hanged/deadlocked. I'm not sure if all of this related to the same bug, or maybe these all are different bugs, but I think all of this somehow related to macOS Monterey or arm64 architecture, or a combination of both.
So far I've got:
Crash 1
SIGABRTwithmalloc: Heap corruption detected, free list is damaged at 0x60000125f660Go stacktrace
Apple crash report
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], "type": "EXC_CRASH", "signal": "SIGABRT" }, "asi": { "matching.test": [], "libsystem_malloc.dylib": [ "matching.test(54845,0x16f2e3000) malloc: Heap corruption detected, free list is damaged at 0x60000125f660", "*** Incorrect guard value: 0" ], "libsystem_c.dylib": [ "abort() called" ] }, "extMods": { "caller": { "thread_create": 0, "thread_set_state": 0, "task_for_pid": 0 }, "system": { "thread_create": 0, "thread_set_state": 0, "task_for_pid": 2 }, "targeted": { "thread_create": 0, "thread_set_state": 0, "task_for_pid": 0 }, "warnings": 0 }, "faultingThread": 7, "threads": [ { "id": 473524, "queue": "com.apple.main-thread", "frames": [ { "imageOffset": 20672, "symbol": "__psynch_cvwait", "symbolLocation": 8, "imageIndex": 0 }, { "imageOffset": 31412, "symbol": "_pthread_cond_wait", "symbolLocation": 1228, "imageIndex": 1 }, { "imageOffset": 4311281336, "symbol": "runtime.pthread_cond_wait_trampoline", "symbolLocation": 24, "imageIndex": 2 }, { "imageOffset": 4311274872, "symbol": "runtime.asmcgocall.abi0", "symbolLocation": 200, "imageIndex": 2 } ] }, { "id": 473525, "frames": [ { "imageOffset": 20672, "symbol": "__psynch_cvwait", "symbolLocation": 8, "imageIndex": 0 }, { "imageOffset": 31456, "symbol": "_pthread_cond_wait", "symbolLocation": 1272, "imageIndex": 1 }, { "imageOffset": 4311281388, "symbol": "runtime.pthread_cond_timedwait_relative_np_trampoline", "symbolLocation": 28, "imageIndex": 2 }, { "imageOffset": 4311274872, "symbol": "runtime.asmcgocall.abi0", "symbolLocation": 200, "imageIndex": 2 } ] }, { "id": 473526, "frames": [ { "imageOffset": 20672, "symbol": "__psynch_cvwait", "symbolLocation": 8, "imageIndex": 0 }, { "imageOffset": 31412, "symbol": "_pthread_cond_wait", "symbolLocation": 1228, "imageIndex": 1 }, { "imageOffset": 4311281336, "symbol": "runtime.pthread_cond_wait_trampoline", "symbolLocation": 24, "imageIndex": 2 }, { "imageOffset": 4311274872, "symbol": "runtime.asmcgocall.abi0", "symbolLocation": 200, "imageIndex": 2 } ] }, { "id": 473527, "frames": [ { "imageOffset": 20672, "symbol": "__psynch_cvwait", "symbolLocation": 8, "imageIndex": 0 }, { "imageOffset": 31412, "symbol": "_pthread_cond_wait", "symbolLocation": 1228, "imageIndex": 1 }, { "imageOffset": 4311281336, "symbol": "runtime.pthread_cond_wait_trampoline", "symbolLocation": 24, "imageIndex": 2 }, { "imageOffset": 4311274872, "symbol": "runtime.asmcgocall.abi0", "symbolLocation": 200, "imageIndex": 2 } ] }, { "id": 473528, "frames": [ { "imageOffset": 20672, "symbol": "__psynch_cvwait", "symbolLocation": 8, "imageIndex": 0 }, { "imageOffset": 31412, "symbol": "_pthread_cond_wait", "symbolLocation": 1228, "imageIndex": 1 }, { "imageOffset": 4311281336, "symbol": "runtime.pthread_cond_wait_trampoline", "symbolLocation": 24, "imageIndex": 2 }, { "imageOffset": 4311274872, "symbol": "runtime.asmcgocall.abi0", "symbolLocation": 200, "imageIndex": 2 } ] }, { "id": 473529, "frames": [ { "imageOffset": 20672, "symbol": "__psynch_cvwait", "symbolLocation": 8, "imageIndex": 0 }, { "imageOffset": 31412, "symbol": "_pthread_cond_wait", "symbolLocation": 1228, "imageIndex": 1 }, { "imageOffset": 4311281336, "symbol": "runtime.pthread_cond_wait_trampoline", "symbolLocation": 24, "imageIndex": 2 }, { "imageOffset": 4311274872, "symbol": "runtime.asmcgocall.abi0", "symbolLocation": 200, "imageIndex": 2 } ] }, { "id": 473530, "frames": [ { "imageOffset": 20672, "symbol": "__psynch_cvwait", "symbolLocation": 8, "imageIndex": 0 }, { "imageOffset": 31456, "symbol": "_pthread_cond_wait", "symbolLocation": 1272, "imageIndex": 1 }, { "imageOffset": 4311281388, "symbol": "runtime.pthread_cond_timedwait_relative_np_trampoline", "symbolLocation": 28, "imageIndex": 2 }, { "imageOffset": 4311274872, "symbol": "runtime.asmcgocall.abi0", "symbolLocation": 200, "imageIndex": 2 } ] }, { "triggered": true, "id": 473531, "threadState": { "x": [ { "value": 0 }, { "value": 0 }, { "value": 824635150736 }, { "value": 824634798144 }, { "value": 0 }, { "value": 0 }, { "value": 4315159968, "symbolLocation": 0, "symbol": "runtime.handlingSig" }, { "value": 0 }, { "value": 11591568775855976478 }, { "value": 11591568773085757470 }, { "value": 17 }, { "value": 4311283744, "symbolLocation": 0, "symbol": "runtime.sigtrampgo.abi0" }, { "value": 0 }, { "value": 824635150720 }, { "value": 0 }, { "value": 0 }, { "value": 328 }, { "value": 8339535152 }, { "value": 0 }, { "value": 6 }, { "value": 6160265216 }, { "value": 4867 }, { "value": 4312959399, "symbolLocation": 0, "symbol": "go.func.*" }, { "value": 4451188736 }, { "value": 0 }, { "value": 0 }, { "value": 0 }, { "value": 2112 }, { "value": 824634798144 } ], "flavor": "ARM_THREAD_STATE64", "lr": { "value": 6825496924 }, "cpsr": { "value": 1073745920 }, "fp": { "value": 824635150656 }, "sp": { "value": 824635150624 }, "esr": { "value": 1442840704, "description": " Address size fault" }, "pc": { "value": 6825286072, "matchesCrashFrame": 1 }, "far": { "value": 4314942896 } }, "frames": [ { "imageOffset": 39352, "symbol": "__pthread_kill", "symbolLocation": 8, "imageIndex": 0 }, { "imageOffset": 29020, "symbol": "pthread_kill", "symbolLocation": 288, "imageIndex": 1 }, { "imageOffset": 269476, "symbol": "raise", "symbolLocation": 32, "imageIndex": 3 }, { "imageOffset": 4311281140, "symbol": "runtime.raise_trampoline", "symbolLocation": 20, "imageIndex": 2 }, { "imageOffset": 4311274872, "symbol": "runtime.asmcgocall.abi0", "symbolLocation": 200, "imageIndex": 2 } ] }, { "id": 473532, "frames": [ { "imageOffset": 20672, "symbol": "__psynch_cvwait", "symbolLocation": 8, "imageIndex": 0 }, { "imageOffset": 31412, "symbol": "_pthread_cond_wait", "symbolLocation": 1228, "imageIndex": 1 }, { "imageOffset": 4311281336, "symbol": "runtime.pthread_cond_wait_trampoline", "symbolLocation": 24, "imageIndex": 2 }, { "imageOffset": 4311274872, "symbol": "runtime.asmcgocall.abi0", "symbolLocation": 200, "imageIndex": 2 } ] } ], "usedImages": [ { "source": "P", "arch": "arm64e", "base": 6825246720, 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\nREGION TYPE SIZE COUNT (non-coalesced) \n=========== ======= ======= \nKernel Alloc Once 32K 1 \nMALLOC 135.1M 25 \nMALLOC guard page 96K 5 \nMALLOC_NANO (reserved) 381.6M 20 reserved VM address space (unallocated)\nSTACK GUARD 56.1M 8 \nSanitizer 224.0M 54 \nSanitizer (reserved) 128.0M 1 reserved VM address space (unallocated)\nStack 12.2M 9 \nStack Guard 16K 1 \nVM_ALLOCATE 1.7G 33 \n__AUTH 221K 46 \n__AUTH_CONST 2870K 122 \n__DATA 11.2M 119 \n__DATA_CONST 4951K 124 \n__DATA_DIRTY 232K 50 \n__LINKEDIT 571.1M 3 \n__OBJC_CONST 259K 29 \n__OBJC_RO 81.8M 1 \n__OBJC_RW 3088K 1 \n__TEXT 79.8M 130 \n__UNICODE 588K 1 \ndyld private memory 1024K 1 \nmapped file 4K 1 \nshared memory 16K 1 \n=========== ======= ======= \nTOTAL 3.3G 786 \nTOTAL, minus reserved VM space 2.8G 786 \n", "legacyInfo": { "threadTriggered": { } }, "trialInfo": { "rollouts": [ { "rolloutId": "601d9415f79519000ccd4b69", "factorPackIds": { "SIRI_TEXT_TO_SPEECH": "6194416dea7ed64a7812a429" }, "deploymentId": 240000322 }, { "rolloutId": "602ad4dac86151000cf27e46", "factorPackIds": { "SIRI_DICTATION_ASSETS": "6181ebb28763315b9604755e" }, "deploymentId": 240000271 }, { "rolloutId": "5fc94383418129005b4e9ae0", "factorPackIds": { }, "deploymentId": 240000162 }, { "rolloutId": "5ffde50ce2aacd000d47a95f", "factorPackIds": { }, "deploymentId": 240000076 }, { "rolloutId": "60da5e84ab0ca017dace9abf", "factorPackIds": { }, "deploymentId": 240000008 }, { "rolloutId": "607844aa04477260f58a8077", "factorPackIds": { "SIRI_MORPHUN_ASSETS": "6103050cbfe6dc472e1c982a" }, "deploymentId": 240000066 } ], "experiments": [ ] } }Crash 2
SIGABRTwith"type":"EXC_BAD_ACCESS","signal":"SIGABRT","subtype":"KERN_INVALID_ADDRESS'Go stacktrace
Apple crash report
{"app_name":"postgres.test","timestamp":"2021-11-30 00:51:06.00 +0300","app_version":"","slice_uuid":"00000000-0000-0000-0000-000000000000","build_version":"","platform":1,"share_with_app_devs":0,"is_first_party":1,"bug_type":"309","os_version":"macOS 12.0.1 (21A559)","incident_id":"589BC781-82F0-4120-AAF4-6E29E2BD0024","name":"postgres.test"} { "uptime" : 36000, "procLaunch" : "2021-11-30 00:51:05.9814 +0300", "procRole" : "Unspecified", "version" : 2, "userID" : 501, "deployVersion" : 210, "modelCode" : "MacBookPro18,2", "procStartAbsTime" : 871250429884, "coalitionID" : 1788, "osVersion" : { "train" : "macOS 12.0.1", "build" : "21A559", "releaseType" : "User" }, "captureTime" : "2021-11-30 00:51:06.4992 +0300", "incident" : "589BC781-82F0-4120-AAF4-6E29E2BD0024", "bug_type" : "309", "pid" : 59175, "procExitAbsTime" : 871262851101, "translated" : false, "cpuType" : "ARM-64", "procName" : "postgres.test", "procPath" : "\/private\/var\/folders\/*\/postgres.test", "parentProc" : "go", "parentPid" : 59083, "coalitionName" : "com.googlecode.iterm2", "crashReporterKey" : "4CEE213C-1F9C-44C6-8DE0-31B7B2E9BE02", "responsiblePid" : 2046, "responsibleProc" : "iTerm2", "wakeTime" : 14289, "sleepWakeUUID" : "5135B805-E21F-49E7-842E-1E4AED9E54ED", "sip" : "enabled", "vmRegionInfo" : "0x2a51ad2dc is not in any region. Bytes after previous region: 1465455325 Bytes before following region: 56285801764\n REGION TYPE START - END [ VSIZE] PRT\/MAX SHRMOD REGION DETAIL\n unused shlib __TEXT 24a644000-24dc1c000 [ 53.8M] r--\/r-- SM=COW ... this process\n---> GAP OF 0xd723e4000 BYTES\n commpage (reserved) fc0000000-1000000000 [ 1.0G] ---\/--- SM=NUL ...(unallocated)", "isCorpse" : 1, "exception" : {"codes":"0x0000000000000001, 0x00000002a51ad2dc","rawCodes":[1,11359933148],"type":"EXC_BAD_ACCESS","signal":"SIGABRT","subtype":"KERN_INVALID_ADDRESS at 0x00000002a51ad2dc"}, "vmregioninfo" : "0x2a51ad2dc is not in any region. Bytes after previous region: 1465455325 Bytes before following region: 56285801764\n REGION TYPE START - END [ VSIZE] PRT\/MAX SHRMOD REGION DETAIL\n unused shlib __TEXT 24a644000-24dc1c000 [ 53.8M] r--\/r-- SM=COW ... this process\n---> GAP OF 0xd723e4000 BYTES\n commpage (reserved) fc0000000-1000000000 [ 1.0G] ---\/--- SM=NUL ...(unallocated)", "asi" : {"postgres.test":[]}, "extMods" : {"caller":{"thread_create":0,"thread_set_state":0,"task_for_pid":0},"system":{"thread_create":0,"thread_set_state":0,"task_for_pid":2},"targeted":{"thread_create":0,"thread_set_state":0,"task_for_pid":0},"warnings":0}, "faultingThread" : 0, "threads" : 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Address size 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Total=931.2M written=0K(0%) resident=0K(0%) swapped_out=0K(0%) unallocated=931.2M(100%)\n\n VIRTUAL REGION \nREGION TYPE SIZE COUNT (non-coalesced) \n=========== ======= ======= \nKernel Alloc Once 32K 1 \nMALLOC 135.1M 25 \nMALLOC guard page 96K 5 \nMALLOC_NANO (reserved) 381.6M 20 reserved VM address space (unallocated)\nSTACK GUARD 112K 7 \nSanitizer 222.7M 52 \nSanitizer (reserved) 128.0M 1 reserved VM address space (unallocated)\nStack 11.7M 8 \nStack Guard 56.0M 1 \nVM_ALLOCATE 1.7G 25 \n__AUTH 221K 46 \n__AUTH_CONST 2870K 122 \n__DATA 11.4M 119 \n__DATA_CONST 8739K 124 \n__DATA_DIRTY 232K 50 \n__LINKEDIT 572.2M 3 \n__OBJC_CONST 259K 29 \n__OBJC_RO 81.8M 1 \n__OBJC_RW 3088K 1 \n__TEXT 86.1M 130 \n__UNICODE 588K 1 \ndyld private memory 1024K 1 \nmapped file 8K 1 \nshared memory 16K 1 \n=========== ======= ======= \nTOTAL 3.3G 774 \nTOTAL, minus reserved VM space 2.8G 774 \n", "legacyInfo" : { "threadTriggered" : { "queue" : "com.apple.main-thread" } }, "trialInfo" : { "rollouts" : 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"experiments" : [
]
}
}
Crash 3
Another
Heap corruption detected, different go stacktraceGo stacktrace
Apple crash report
{"app_name":"server.test","timestamp":"2021-11-30 01:00:24.00 +0300","app_version":"","slice_uuid":"00000000-0000-0000-0000-000000000000","build_version":"","platform":1,"share_with_app_devs":0,"is_first_party":1,"bug_type":"309","os_version":"macOS 12.0.1 (21A559)","incident_id":"9CCFA7DC-DC4D-42BD-B302-909BDC4C78F2","name":"server.test"} { "uptime" : 36000, "procLaunch" : "2021-11-30 01:00:19.1719 +0300", "procRole" : "Unspecified", "version" : 2, "userID" : 501, "deployVersion" : 210, "modelCode" : "MacBookPro18,2", "procStartAbsTime" : 884526896715, "coalitionID" : 1788, "osVersion" : { "train" : "macOS 12.0.1", "build" : "21A559", "releaseType" : "User" }, "captureTime" : "2021-11-30 01:00:24.6440 +0300", "incident" : "9CCFA7DC-DC4D-42BD-B302-909BDC4C78F2", "bug_type" : "309", "pid" : 60379, "procExitAbsTime" : 884658169333, "translated" : false, "cpuType" : "ARM-64", "procName" : "server.test", "procPath" : "\/private\/var\/folders\/*\/server.test", "parentProc" : "go", "parentPid" : 60257, "coalitionName" : "com.googlecode.iterm2", "crashReporterKey" : "4CEE213C-1F9C-44C6-8DE0-31B7B2E9BE02", "responsiblePid" : 2046, "responsibleProc" : "iTerm2", "wakeTime" : 14847, "sleepWakeUUID" : "5135B805-E21F-49E7-842E-1E4AED9E54ED", "sip" : "enabled", "isCorpse" : 1, "exception" : {"codes":"0x0000000000000000, 0x0000000000000000","rawCodes":[0,0],"type":"EXC_CRASH","signal":"SIGABRT"}, "asi" : {"libsystem_malloc.dylib":["server.test(60379,0x1067f4580) malloc: Heap corruption detected, free list is damaged at 0x600003072ba0","*** Incorrect guard value: 0"],"server.test":[],"libsystem_c.dylib":["abort() called"]}, "extMods" : {"caller":{"thread_create":0,"thread_set_state":0,"task_for_pid":0},"system":{"thread_create":0,"thread_set_state":0,"task_for_pid":2},"targeted":{"thread_create":0,"thread_set_state":0,"task_for_pid":0},"warnings":0}, "faultingThread" : 0, "threads" : 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fault"},"pc":{"value":6825286072,"matchesCrashFrame":1},"far":{"value":4341170176}},"queue":"com.apple.main-thread","frames":[{"imageOffset":39352,"symbol":"__pthread_kill","symbolLocation":8,"imageIndex":0},{"imageOffset":29020,"symbol":"pthread_kill","symbolLocation":288,"imageIndex":1},{"imageOffset":269476,"symbol":"raise","symbolLocation":32,"imageIndex":2},{"imageOffset":4375614436,"symbol":"runtime.raise_trampoline","symbolLocation":20,"imageIndex":3},{"imageOffset":4375608008,"symbol":"runtime.asmcgocall.abi0","symbolLocation":200,"imageIndex":3}]},{"id":535287,"frames":[{"imageOffset":20672,"symbol":"__psynch_cvwait","symbolLocation":8,"imageIndex":0},{"imageOffset":31456,"symbol":"_pthread_cond_wait","symbolLocation":1272,"imageIndex":1},{"imageOffset":4375614684,"symbol":"runtime.pthread_cond_timedwait_relative_np_trampoline","symbolLocation":28,"imageIndex":3},{"imageOffset":4375608008,"symbol":"runtime.asmcgocall.abi0","symbolLocation":200,"imageIndex":3}]}], "usedImages" : [ { "source" : "P", "arch" : "arm64e", "base" : 6825246720, "size" : 221184, "uuid" : "c8524c02-b14f-30bd-a228-c44b4a448e68", "path" : "\/usr\/lib\/system\/libsystem_kernel.dylib", "name" : "libsystem_kernel.dylib" }, { "source" : "P", "arch" : "arm64e", "base" : 6825467904, "size" : 53248, "uuid" : "4786e19a-9312-38e6-80ef-9c1394548118", "path" : "\/usr\/lib\/system\/libsystem_pthread.dylib", "name" : "libsystem_pthread.dylib" }, { "source" : "P", "arch" : "arm64e", "base" : 6824202240, "size" : 528384, "uuid" : "002a39ae-6431-3b2e-85e7-c45fc2f95ad0", "path" : "\/usr\/lib\/system\/libsystem_c.dylib", "name" : "libsystem_c.dylib" }, { "size" : 0, "source" : "A", "base" : 0, "uuid" : "00000000-0000-0000-0000-000000000000" } ], "sharedCache" : { "base" : 6822297600, "size" : 3072180224, "uuid" : "a6162d66-93e3-3251-93cc-b11f7c8c830e" }, "vmSummary" : "ReadOnly portion of Libraries: Total=656.6M resident=0K(0%) swapped_out_or_unallocated=656.6M(100%)\nWritable regions: Total=922.1M written=0K(0%) resident=0K(0%) swapped_out=0K(0%) unallocated=922.1M(100%)\n\n VIRTUAL REGION \nREGION TYPE SIZE COUNT (non-coalesced) \n=========== ======= ======= \nKernel Alloc Once 32K 1 \nMALLOC 136.1M 18 \nMALLOC guard page 96K 5 \nMALLOC_NANO (reserved) 384.0M 1 reserved VM address space (unallocated)\nSTACK GUARD 16K 1 \nSanitizer 176.8M 18 \nSanitizer (reserved) 165.3M 3 reserved VM address space (unallocated)\nStack 8720K 2 \nStack Guard 56.0M 1 \nVM_ALLOCATE 1.7G 24 \n__AUTH 221K 46 \n__AUTH_CONST 2870K 122 \n__DATA 11.4M 119 \n__DATA_CONST 7879K 124 \n__DATA_DIRTY 232K 50 \n__LINKEDIT 572.0M 3 \n__OBJC_CONST 259K 29 \n__OBJC_RO 81.8M 1 \n__OBJC_RW 3088K 1 \n__TEXT 84.6M 130 \n__UNICODE 588K 1 \ndyld private memory 1024K 1 \nmapped file 4K 1 \nshared memory 16K 1 \n=========== ======= ======= \nTOTAL 3.3G 703 \nTOTAL, minus reserved VM space 2.8G 703 \n", "legacyInfo" : { "threadTriggered" : { "queue" : "com.apple.main-thread" } }, "trialInfo" : { "rollouts" : [ { "rolloutId" : "601d9415f79519000ccd4b69", "factorPackIds" : { "SIRI_TEXT_TO_SPEECH" : "6194416dea7ed64a7812a429" }, "deploymentId" : 240000322 }, { "rolloutId" : "602ad4dac86151000cf27e46", "factorPackIds" : { "SIRI_DICTATION_ASSETS" : "6181ebb28763315b9604755e" }, "deploymentId" : 240000271 }, { "rolloutId" : "5fc94383418129005b4e9ae0", "factorPackIds" : {],
"experiments" : [
]
}
}
Crash 4
Another SIGABRT, maybe an interesting/helpful stacktrace? Unfortunately, I don't have an Apple report for this one.
Go stacktrace
Hang up 1
My test suite just hanged with one process consuming 99.9% cpu.
lldb stracktrace
(lldb) process interrupt Process 49308 stopped * thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGURG frame #0: 0x0000000196d11a5c libsystem_kernel.dylib`swtch_pri + 8 libsystem_kernel.dylib`swtch_pri: -> 0x196d11a5c <+8>: retlibsystem_kernel.dylib`swtch:
0x196d11a60 <+0>: mov x16, #-0x3c
0x196d11a64 <+4>: svc #0x80
0x196d11a68 <+8>: ret
Target 0: (engine.test) stopped.
(lldb) thread list
Process 49308 stopped
swtch_pri + 8, queue = 'com.apple.main-thread', stop reason = signal SIGURG thread #2: tid = 0x663b2, 0x0000000196d150c0 libsystem_kernel.dylib__psynch_cvwait + 8thread #3: tid = 0x663b3, 0x0000000196d150c0 libsystem_kernel.dylib
__psynch_cvwait + 8 thread #4: tid = 0x663b4, 0x0000000196d150c0 libsystem_kernel.dylib__psynch_cvwait + 8thread #5: tid = 0x663b5, 0x0000000196d150c0 libsystem_kernel.dylib
__psynch_cvwait + 8 thread #6: tid = 0x663b6, 0x0000000196d150c0 libsystem_kernel.dylib__psynch_cvwait + 8thread #7: tid = 0x663b7, 0x0000000196d150c0 libsystem_kernel.dylib
__psynch_cvwait + 8 thread #8: tid = 0x663b8, 0x0000000196d150c0 libsystem_kernel.dylib__psynch_cvwait + 8(lldb) thread backtrace all
swtch_pri + 8 frame #1: 0x0000000196d4a390 libsystem_pthread.dylibcthread_yield + 20frame #2: 0x000000010466441c engine.test
__tsan_func_enter + 232 frame #3: 0x0000000104700538 engine.testracefuncenter + 56frame #4: 0x00000001046ddb38 engine.test
runtime.racereadrangepc + 56 frame #5: 0x00000001046dd204 engine.testruntime.raceReadObjectPC + 68frame #6: 0x00000001046a50d8 engine.test
runtime.mapassign + 104 frame #7: 0x0000000104a46d80 engine.testvendor/golang.org/x/net/http2/hpack.init + 1216frame #8: 0x00000001046dbc48 engine.test
runtime.doInit + 312 frame #9: 0x00000001046dbb80 engine.testruntime.doInit + 112frame #10: 0x00000001046dbb80 engine.test
runtime.doInit + 112 frame #11: 0x00000001046dbb80 engine.testruntime.doInit + 112frame #12: 0x00000001046dbb80 engine.test
runtime.doInit + 112 frame #13: 0x00000001046cdbdc engine.testruntime.main + 540thread #2
frame #0: 0x0000000196d150c0 libsystem_kernel.dylib
__psynch_cvwait + 8 frame #1: 0x0000000196d4dae0 libsystem_pthread.dylib_pthread_cond_wait + 1272frame #2: 0x00000001047014dc engine.test
runtime.pthread_cond_timedwait_relative_np_trampoline + 28 thread #3 frame #0: 0x0000000196d150c0 libsystem_kernel.dylib__psynch_cvwait + 8frame #1: 0x0000000196d4dab4 libsystem_pthread.dylib
_pthread_cond_wait + 1228 frame #2: 0x00000001047014a8 engine.testruntime.pthread_cond_wait_trampoline + 24frame #3: 0x00000001046ffac8 engine.test
runtime.asmcgocall.abi0 + 200 thread #4 frame #0: 0x0000000196d150c0 libsystem_kernel.dylib__psynch_cvwait + 8frame #1: 0x0000000196d4dae0 libsystem_pthread.dylib
_pthread_cond_wait + 1272 frame #2: 0x00000001047014dc engine.testruntime.pthread_cond_timedwait_relative_np_trampoline + 28thread #5
frame #0: 0x0000000196d150c0 libsystem_kernel.dylib
__psynch_cvwait + 8 frame #1: 0x0000000196d4dab4 libsystem_pthread.dylib_pthread_cond_wait + 1228frame #2: 0x00000001047014a8 engine.test
runtime.pthread_cond_wait_trampoline + 24 frame #3: 0x00000001046ffac8 engine.testruntime.asmcgocall.abi0 + 200thread #6
frame #0: 0x0000000196d150c0 libsystem_kernel.dylib
__psynch_cvwait + 8 frame #1: 0x0000000196d4dab4 libsystem_pthread.dylib_pthread_cond_wait + 1228frame #2: 0x00000001047014a8 engine.test
runtime.pthread_cond_wait_trampoline + 24 frame #3: 0x00000001046ffac8 engine.testruntime.asmcgocall.abi0 + 200thread #7
frame #0: 0x0000000196d150c0 libsystem_kernel.dylib
__psynch_cvwait + 8 frame #1: 0x0000000196d4dab4 libsystem_pthread.dylib_pthread_cond_wait + 1228frame #2: 0x00000001047014a8 engine.test
runtime.pthread_cond_wait_trampoline + 24 frame #3: 0x00000001046ffac8 engine.testruntime.asmcgocall.abi0 + 200thread #8
frame #0: 0x0000000196d150c0 libsystem_kernel.dylib
__psynch_cvwait + 8 frame #1: 0x0000000196d4dab4 libsystem_pthread.dylib_pthread_cond_wait + 1228frame #2: 0x00000001047014a8 engine.test
runtime.pthread_cond_wait_trampoline + 24 frame #3: 0x00000001046ffac8 engine.testruntime.asmcgocall.abi0 + 200Activity monitor sample process
Hang up 2
Same here, different stacktrace.
lldb stacktrace
(lldb) process attach --pid 52114 warning: (arm64) /private/var/folders/sp/fyc644ws6wgb3_zh332vy1bh0000gn/T/go-build938459180/b367/bdd.test(0x0000000104b68000) address 0x0000000104b68000 maps to more than one section: bdd.test.__TEXT and bdd.test.__TEXT warning: (arm64) /private/var/folders/sp/fyc644ws6wgb3_zh332vy1bh0000gn/T/go-build938459180/b367/bdd.test(0x0000000104b68000) address 0x0000000105134000 maps to more than one section: bdd.test.__DATA_CONST and bdd.test.__DATA_CONST warning: (arm64) /private/var/folders/sp/fyc644ws6wgb3_zh332vy1bh0000gn/T/go-build938459180/b367/bdd.test(0x0000000104b68000) address 0x00000001053e8000 maps to more than one section: bdd.test.__DATA and bdd.test.__DATA Process 52114 stopped * thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=2, address=0x104d64e0c) frame #0: 0x0000000196bd9938 libobjc.A.dylib`_setThisThreadIsInitializingClass(objc_class*) + 176 libobjc.A.dylib`_setThisThreadIsInitializingClass: -> 0x196bd9938 <+176>: str w9, [x19] 0x196bd993c <+180>: sbfiz x1, x9, #3, #32 0x196bd9940 <+184>: bl 0x196bff5b4 ; symbol stub for: realloc 0x196bd9944 <+188>: str x0, [x19, #0x8] Target 0: (bdd.test) stopped.Executable module set to "/private/var/folders/sp/fyc644ws6wgb3_zh332vy1bh0000gn/T/go-build938459180/b367/bdd.test".
Architecture set to: arm64e-apple-macosx-.
(lldb) thread list
Process 52114 stopped
(lldb) thread backtrace
_setThisThreadIsInitializingClass(objc_class*) + 176 frame #1: 0x0000000196bd9680 libobjc.A.dylibinitializeNonMetaClass + 644frame #2: 0x0000000196bd9490 libobjc.A.dylib
initializeNonMetaClass + 148 frame #3: 0x0000000196bd9490 libobjc.A.dylibinitializeNonMetaClass + 148frame #4: 0x0000000196bd9048 libobjc.A.dylib
initializeAndMaybeRelock(objc_class*, objc_object*, mutex_tt<false>&, bool) + 156 frame #5: 0x0000000196bd8dfc libobjc.A.dyliblookUpImpOrForward + 1016frame #6: 0x0000000196bd8724 libobjc.A.dylib
_objc_msgSend_uncached + 68 frame #7: 0x0000000196ab6a04 libxpc.dylibxpc_atfork_child + 136frame #8: 0x00000001a17e3ab8 libSystem.B.dylib
libSystem_atfork_child + 64 frame #9: 0x0000000196c37fe4 libsystem_c.dylibfork + 112frame #10: 0x0000000104c0ccbc bdd.test
runtime.syscall + 44 frame #11: 0x0000000104c0b18c bdd.testruntime.asmcgocall.abi0 + 124I'll see if I can make a repro, although it may take a while, I don't have much experience debugging such things.
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