Re: [exim] bad memory reference; pool not found, at gstring…

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Autor: Jasen Betts
Data:  
A: exim-users
Assumpte: Re: [exim] bad memory reference; pool not found, at gstring_grow 1124
On 2022-12-05, Jeremy Harris via Exim-users <exim-users@???> wrote:
> On 05/12/2022 23:31, Jasen Betts via Exim-users wrote:
>> I'm getting this error panic
>> "bad memory reference; pool not found, at gstring_grow 1124"
>>
>> at a acl logwrite in an ${acl expansion in a router
>>
>> the logwrite is over-size and thus truncated in the debug message
>>
>> then it crashes.
>>
>> it seems to happen failry rarely, maybe 1 in 10000 emails on this

path.
>>
>
> version, ops in progress... core dump?
> --
> Cheers,
>    Jeremy

>


debian backports' exinm-daemon-heavy 4.96


It's caused by caused by a logwrite of exactly 8153
characters (must be exact) in a context where exim_message_id is defined.

eg put this:

logwrite = ${sg{${sg{${sg{aaa}{a}{bbbbbbbbbbb}}}{b}{ccccccccccccc}}}{c}{ddddddddddddddddddd}}zz

in the data ACL

so the line it would write would start with

YYYY-MM-DD HH:MM:SS_IDIDID-IDIDID-ID_
----+----1----+----2----+----3----+--

making exactly 8153+37 = 8190 characters not including the newline.

--
Jasen.