[erlang-questions] No crash reports to tty with OTP R16B03-1

mayamatakeshi <>
Wed Mar 26 00:53:17 CET 2014


Yes, sasl is running:

<0.58.0>              supervisor:sasl/1                      233
158    0
sasl_sup              gen_server:loop/6
9
<0.59.0>              supervisor:sasl/1                      233
170    0
sasl_safe_sup         gen_server:loop/6
9

However, I tested forcing a crash on a different module (not yaws).
And I got this:

=CRASH REPORT==== 26-Mar-2014::08:47:17 ===
  crasher:
    initial call: registrar:init/1
    pid: <0.156.0>
    registered_name: registrar
    exception exit: {bad_return_value,tcp_closed}
      in function  gen_server:terminate/6 (gen_server.erl, line 744)
    ancestors: [appex_sup,<0.66.0>]
    messages: []
    links: [<0.132.0>]
    dictionary: []
    trap_exit: false
    status: running
    heap_size: 610
    stack_size: 27
    reductions: 2308
  neighbours:

So, sasl crash reporting to tty seems OK.
So what seems to be happening is that yaws is somehow inhibiting its crash
reports.
I will check this.

Regards,
Takeshi.


On Wed, Mar 26, 2014 at 3:50 AM, Siri Hansen <> wrote:

> Is the sasl application running on your node?
> /siri
>
> tisdagen den 25:e mars 2014 skrev mayamatakeshi <>:
>
> Hello,
>> I have spend some time updating an old OTP app that was running with
>>   Erlang R13B03 and yaws-1.87
>> to
>>   Erlang R16B03-1 and yaws-1.98
>> The app is working fine, but now starting to code more features and
>> debugging with the new version, I am not seeing sasl writing crash reports
>> to tty anymore.
>>
>> The sasl is writing progress and info reports to tty:
>> =PROGRESS REPORT==== 25-Mar-2014::21:38:04 ===
>>           supervisor: {local,kernel_safe_sup}
>>              started: [{pid,<0.164.0>},
>>                        {name,timer_server},
>>                        {mfargs,{timer,start_link,[]}},
>>                        {restart_type,permanent},
>>                        {shutdown,1000},
>>                        {child_type,worker}]
>>
>> =INFO REPORT==== 25-Mar-2014::21:38:34 ===
>> Send ping frame
>> =INFO REPORT==== 25-Mar-2014::21:39:04 ===
>> Send ping frame
>> =INFO REPORT==== 25-Mar-2014::21:39:34 ===
>> Send ping frame
>>
>> The above are due a WebSocket connection to yaws.
>>
>> I force a crash doing this in yaws:
>>
>> out(A) ->
>>         X = 1,
>>         Y = 2,
>>         X = Y,
>> ...
>>
>> I know the crash is happening because the HTTP request gets this:
>>
>> # curl -x "" http://127.0.0.1:12121/dialplan
>>
>> <h2>Internal error, yaws code crashed</h2><br /><hr />
>> <pre>
>>
>> ERROR erlang code threw an uncaught exception:
>>  File: appmod:0
>> Class: error
>> Exception: {badmatch,false}
>> Req: {http_request,'GET',{abs_path,"/dialplan"},{1,1}}
>> Stack: [{dialplan,out,1,[{file,"src/dialplan.erl"},{line,19}]},
>>         {yaws_server,deliver_dyn_part,8,
>>                      [{file,"yaws_server.erl"},{line,2801}]},
>>         {yaws_server,aloop,4,[{file,"yaws_server.erl"},{line,1215}]},
>>         {yaws_server,acceptor0,2,[{file,"yaws_server.erl"},{line,1052}]},
>>         {proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,239}]}]
>> </pre><hr />
>>
>>
>> But still I don't get crash reports in the tty.
>>
>> Does anyone know of any change related to this?
>>
>> Regards,
>> Takeshi
>>
>>
>>
>>
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