msync - can someone shed some light please?

[Julien ÉLIE]

Hi Chris,

> When adding groups (ctlinnd newgroup…), the following occurs:
> 
> 2025-06-12T14:14:57.572314+02:00 nntpspool innd: SERVER msync failed /var/lib/news/active 0x0x7f3f46800000 5062656 Cannot allocate memory
> 
> Inn refuses to start up, until I literally remove 1 line from my active 
> file.  As soon as I add them again, the issue reoccurs.  The name of the 
> group being added/removed is of no consequence, the issue is about the 
> amount of groups – that is what is getting me here, I completely fail to 
> understand how inn can’t start up with ~107K groups in the active file.
> 
> root at nntpspool ~ # cat /var/lib/news/active|wc -l
> 107411
> 
> INN 2.7.3

What operating system are you using?
Do you build from sources?  If that is the case, may you try to change 
in lib/mmap.c:

     char *start = (char *) ((uintptr_t) p & mask);
     char *end = (char *) (((uintptr_t) p + length + pagesize) & mask);

to:


     char *start = (char *) ((size_t) p & mask);
     char *end = (char *) (((size_t) p + length + pagesize) & mask);

It is the only recent change (in 2023) in the code dealing with 
mmap/msync.  Though I am unsure it would solve the memory allocation 
issue, it may be the first thing to test.
Otherwise, I am sorry I do not have any other clue right now.

The wanted allocation is 5,062,656 bytes according to the log, so it 
should have worked on your server with 128 GB of RAM...

-- 
Julien ÉLIE

« On ne va jamais si loin que lorsque l'on ne sait pas où l'on va. »