get os_process_error by exec view

[TimLand]

Hi
I installed couchdb 1.7.2 , then create new empty doc(named test) and view.
then i get this error :
[error] [<0.319.0>] OS Process Error <0.321.0> :: {os_process_error,
{exit_status,139}}
[error] [<0.319.0>] OS Process Error <0.323.0> :: {os_process_error,
{exit_status,139}}

E.G.
create new empty doc
curl -X GET http:https://127.0.0.1:5984/test
{"db_name":"test","doc_count":1,"doc_del_count":0,"update_seq":1,"purge_seq":0,"compact_running":false,"disk_size":4188,"data_size":292,"instance_start_time":"1584272640397307","disk_format_version":6,"committed_update_seq":1}

Add view
curl -H 'Content-Type: application/json' -X PUT http:https://127.0.0.1:5984/test/_design/test -d ' {
"_id" : "_design/test",
"views" : {
"foo" : {
"map" : "function(doc){ emit(doc._id, doc._rev)}"
}
}
} '

Then exec the view then got blocked， then can get the error(os_process_error,exit_status,139)
http:https://127.0.0.1:5984/test/_design/test/_view/foo

My env
#uname -r
4.4.131-20190505.kylin.server-generic (ARM)

Can anyone confirm ?
Greetings

[wohali]

@TimLand That error means you do not have the correct SpiderMonkey libraries installed. We don't support CouchDB 1.x anymore, and we never supported it on ARM, but you need one of: 1.7.0, 1.8.0, 1.8.5 with a strong preference for 1.8.5.

[TimLand]

I install the SpiderMonkey libraries via "apt-get install libmozjs185-1.0"，is that right？

dpkg -l | grep libmozjs185 , display:
libmozjs185-1.0 1.8.5-1.0.0+dfsg-6 arm64 SpiderMonkey JavaScript engine
libmozjs185-dev 1.8.5-1.0.0+dfsg-6 arm64 SpiderMonkey JavaScript library - development headers

[wohali]

@TimLand Yes, but you'll need to compile CouchDB from source to link against those.

[TimLand]

Thx @wohali
I installed the SpiderMonkey libraries via "apt-get install libmozjs185-1.0" and compile CouchDB again

But we go to query the db-view and find that couchjs has crashed yet
We check the coredump file via gdb and find that the stack is in the function js_GetClassPrototype.

(gdb)
#0 0x0000ffff825fdf60 in js_GetClassPrototype(JSContext*, JSObject*, JSProtoKey, JSObject**, js::Class*) () from /usr/lib/libmozjs185.so.1.0
#1 0x0000ffff825fded4 in js_GetClassPrototype(JSContext*, JSObject*, JSProtoKey, JSObject**, js::Class*) () from /usr/lib/libmozjs185.so.1.0
#2 0x0000ffff825fded4 in js_GetClassPrototype(JSContext*, JSObject*, JSProtoKey, JSObject**, js::Class*) () from /usr/lib/libmozjs185.so.1.0
#3 0x0000ffff825fded4 in js_GetClassPrototype(JSContext*, JSObject*, JSProtoKey, JSObject**, js::Class*) () from /usr/lib/libmozjs185.so.1.0
#4 0x0000ffff825fded4 in js_GetClassPrototype(JSContext*, JSObject*, JSProtoKey, JSObject**, js::Class*) () from /usr/lib/libmozjs185.so.1.0
#5 0x0000ffff825fded4 in js_GetClassPrototype(JSContext*, JSObject*, JSProtoKey, JSObject**, js::Class*) () from /usr/lib/libmozjs185.so.1.0
#6 0x0000ffff825fded4 in js_GetClassPrototype(JSContext*, JSObject*, JSProtoKey, JSObject**, js::Class*) () from /usr/lib/libmozjs185.so.1.0
Greetings

[TimLand]

maybe libmozjs185.so is not good work on arm？

[TimLand]

couchdb2.3.1 encountered the same problem，
They all depend on the same library libmozjs185.so.1.0

[wohali]

we build binary packages for CouchDB 2.3.1 on arm64 for debian. You can install from our documentation for that version.

[jiangphcn]

couchdb2.3.1 encountered the same problem

also happened at box with arm architecture? We got some problem as well on arm.

[wohali]

the long answer is that libmozjs1.8.5 needs a patch for arm64 due to high bit masking. the details are over in apache/couchdb-pkg but i don't have time tonight to link it.

[TimLand]

@wohali Thanks a lot in advance.
I found this patch， and it work fine！！！