Re: Mumi service

["Ludovic Courtès" <ludo@gnu.org>]

Hi!

Ricardo Wurmus <rekado@elephly.net> skribis:

> Ludovic Courtès <ludo@gnu.org> writes:

[...]

>> However, the currently packaged snapshot crashes when trying to retrieve
>> information about a bug:
>>
>> --8<---------------cut here---------------start------------->8---
>> $ /gnu/store/qw2c84gnwk3sgivh2i8x98xx5gx73vxl-mumi-0.0.0-5.8a57c87/bin/mumi
>> GET /issue/22883
>> In mumi/web/server.scm:
>>      38:9 23 (handler _ _ _)
>> In mumi/web/controller.scm:
>>     38:21 22 (render-with-error-handling _ _)
>>    104:21 21 (_)
>> In mumi/web/view/html.scm:
>>    274:19 20 (issue-page #<bug 22883 7f9b77516ee0>)
>> In mumi/messages.scm:
>>    185:16 19 (patch-messages 22883)
>> In debbugs/soap.scm:
>>    163:19 18 (soap-invoke* #<procedure %gnu args> #<procedure get-bug-message-numbe…> …)
>>     157:7 17 (soap-invoke _ _ . _)
>> In sxml/simple.scm:
>>     143:4 16 (xml->sxml _ #:namespaces _ #:declare-namespaces? _ #:trim-whitespace? _ …)
>>     143:4 15 (loop #<input: string 7f9b77346d20> () #f _)
>>     143:4 14 (loop #<input: string 7f9b77346d20> () #f _)
>>     143:4 13 (loop #<input: string 7f9b77346d20> () #f _)
>>     143:4 12 (loop #<input: string 7f9b77346d20> () #f _)
>>     143:4 11 (loop #<input: string 7f9b77346d20> () #f _)
>>     143:4 10 (loop #<input: string 7f9b77346d20> () #f _)
>> In sxml/upstream/SSAX.scm:
>>   1896:21  9 (_ #<input: string 7f9b77346d20> #f #<procedure 7f9b76d3a4d8 at sxml/s…> …)
>> In sxml/ssax/input-parse.scm:
>>    103:21  8 (next-token _ (#\< #\& #\return) _ _)
>> In ice-9/suspendable-ports.scm:
>>    683:15  7 (read-delimited _ _ _)
>>    184:27  6 (fill-input #<input: string 7f9b77346d20> _ _)
>>      72:4  5 (read-bytes #<input: string 7f9b77346d20> #vu8(10 32 98 121 32 109 97 …) …)
>> In unknown file:
>>            4 (port-read #<input: string 7f9b77346d20> #vu8(10 32 98 121 32 109 97 …) …)
>> In web/response.scm:
>>    254:22  3 (read! #vu8(10 32 98 121 32 109 97 105 108 46 109 101 115 115 97 103 …) …)
>> In ice-9/suspendable-ports.scm:
>>    284:18  2 (get-bytevector-n! #<input-output: string 7f9b77346d90> #vu8(10 32 98 …) …)
>>      72:4  1 (read-bytes #<input-output: string 7f9b77346d90> #vu8(10 32 98 121 32 …) …)
>> In unknown file:
>>            0 (port-read #<input-output: string 7f9b77346d90> #vu8(10 32 98 121 32 …) …)
>> In procedure custom_binary_input_port_read: Value out of range: 1024
>> --8<---------------cut here---------------end--------------->8---
>>
>> Does that ring a bell, Ricardo?  Should we update to a newer snapshot?
>
> This is exactly the same bug I hit when using mumi with (fibers web
> server).  With just the regular Guile (web server) it works fine but
> seemingly leaks file handles until it is restarted.
>
> I don’t understand this.

Could it be that the ‘read!’ procedure of the custom binary input port
(CBIP) returned by ‘make-delimited-input-port’ in (web response) returns
1024 when ‘count’ is in fact lower than 1024, or something along these
lines?  I would try adding ‘pk’ calls there to display ‘count’ and the
return value.

If that is true, then maybe the underlying issue is that
‘get-bytevector-n!’ in (ice-9 suspendable-ports) can return a value
greater than ‘count’, presumably in the ‘fill-directly’ case.

Hmmm!

Ludo’.