[Bug 3776] New: Memory Leak in spamd

[bu...@bugzilla.spamassassin.org]

http://bugzilla.spamassassin.org/show_bug.cgi?id=3776

           Summary: Memory Leak in spamd
           Product: Spamassassin
           Version: 2.63
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: critical
          Priority: P1
         Component: spamc/spamd
        AssignedTo: dev@spamassassin.apache.org
        ReportedBy: fs@nessus.at


Hi there!

Im running a spamassassin 2.63 daemon on a middle volume mailserver with exim
and exiscan-acl.

the server is a:
- debian sarge, kernel 2.4.27 smp
- perl 5.84
- spamassassin installed from debian tree
- dual p3 1ghz
- 2 GB ram

The problem i get is very strange and very bad. 
Once a month the spamd processes take all the memory(ram and swap), generates
a huge load and fucks up the system within only a few minutes till the kernel 
kills the processes...

i dont know the reason and cant find any solution.
today i tried to chance the connect to the spamd via the socket, maybe this 
helps.

here more infos to find the bug:

message which comes if kernel kills spamd:

VM: killing process spamd
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)

top result of spamd:

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
12365 spamd     14   0  917m 909m 6464 R 99.9 51.5   1:48.69 spamd
 6857 spamd      9   0 23428 6976 5400 S  0.0  0.4   0:10.68 spamd

normally one spamd process needs only 30 MB!

if i strace to this pid with "strace -p 12365" i see no output! thats what me
makes a little ominous...

i hope we can find this bad bug! i will do my best to speed this up!

greetings,

Florian Schicker
nessus.at internet services



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