[Bug 281131] Potential DMA (DragonflyBSD Mail Agent) Bug

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=281131

            Bug ID: 281131
           Summary: Potential DMA (DragonflyBSD Mail Agent) Bug
           Product: Base System
           Version: 14.1-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: bin
          Assignee: bugs@FreeBSD.org
          Reporter: vermaden@interia.pl

Hi,

I was asked by someone to try to submit this.

An example for replication of the phenomenon:

$ mail

Local/Remote Delivery via: dma
==============================
No mail for su1

(1)



// THERE ARE TWO (2) MESSAGES:

$ cat ~/mbox | grep ^From\

From postmaster@rfc8375.home.arpa. Sat Aug 17 04:47:32 2024
From postmaster@rfc8375.home.arpa. Tue Aug 20 14:22:35 2024

(0 0 0)



// # NOT TWO (2) MESSAGES - BUT ONLY ONE (1): 50.00% OF 2 TOTAL ARE MISSING:

$ mail -f

Local/Remote Delivery via: dma
==============================
"/home/su1/mbox": 1 message
& h
> 1 postmaster@rfc8375.h Sat Aug 17 04:47 38/1076 
"fbsd.home.arpa. weekl"
& q

(0)



$ dma_flush_undeliveredMsgs_queue


(0)



$ mail

Local/Remote Delivery via: dma
==============================
"/var/mail/su1": 1 message 1 new
& h
>N 1 postmaster@rfc8375.h Sat Aug 24 04:08 153/7997 
"fbsd.home.arpa. daily"
& top
From postmaster@rfc8375.home.arpa. Sat Aug 24 04:08:39 2024
Received: from root (uid 0)
 (envelope-from postmaster@rfc8375.home.arpa.)
 id 1049c
 by rfc8375.home.arpa (DragonFly Mail Agent v0.13+ on
fbsd.home.arpa.);
 Sat, 24 Aug 2024 03:07:30 +0200
& h
> 1 postmaster@rfc8375.h Sat Aug 24 04:08 153/7997 
"fbsd.home.arpa. daily"
& q
Saved 1 message in mbox

(0)



// THERE ARE THREE (3) MESSAGES:
$ cat ~/mbox | grep ^From\

From postmaster@rfc8375.home.arpa. Sat Aug 17 04:47:32 2024
From postmaster@rfc8375.home.arpa. Tue Aug 20 14:22:35 2024
From postmaster@rfc8375.home.arpa. Sat Aug 24 04:08:39 2024

(0 0 0)



// NOT THREE (3) MESSAGES - BUT ONLY ONE (1): 66.66% OF 3 TOTAL MISSING:

$ mail -f

Local/Remote Delivery via: dma
==============================
"/home/su1/mbox": 1 message
& h
> 1 postmaster@rfc8375.h Sat Aug 17 04:47 192/9084 
"fbsd.home.arpa. weekl"
& q

(0)



// IF YOU DELETE THIS '1 message' THEN ALL 3 WILL BE GONE
// THE OTHER TWO (2) NOT ONLY NOT LISTED - THEY ARE INVISIBLY DELETED



Regards,
vermaden

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