MailScanner broken suddenly?!?!

Julian Field MailScanner at ecs.soton.ac.uk
Fri Jul 20 20:43:26 IST 2007 

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Michael R. Dilworth wrote:
> Happened here to just a few minutes ago.  I wasted the ClamAV databases and at the
> moment freshclam can't connect to any of the mirrors.  Same thing that happened last
> time ClamAV had a major update...  I commented out ClamAV for now and all is fine 
> at the moment (yes I have multiple virus scanners).
>
> Note all is fine until MailScanner restarts, then it will hang with 100% cpu usage.
>   
Nothing has hung, it's just taking a long time to do something (loading 
the signatures).
> Remember MailScanner restarts at least once a day.
>
>
>   
>> -----Original Message-----
>> From: mailscanner-bounces at lists.mailscanner.info
>> [mailto:mailscanner-bounces at lists.mailscanner.info]On Behalf Of
>> Gottschalk, David
>> Sent: Friday, July 20, 2007 11:41 AM
>> To: MailScanner discussion
>> Subject: RE: MailScanner broken suddenly?!?!
>>
>>
>>
>> ClamAV 0.90.3/3707/Fri Jul 20 12:08:45 2007
>>
>> I think this is a different problem though, because it happened all at once. The children 
>> were hanging for 20+ mins or more until I realized they were doing nothing but what that 
>> trace showed me.
>>
>> David Gottschalk
>>
>> -----Original Message-----
>> From: mailscanner-bounces at lists.mailscanner.info 
>> [mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of Richard Frovarp
>> Sent: Friday, July 20, 2007 2:28 PM
>> To: MailScanner discussion
>> Subject: Re: MailScanner broken suddenly?!?!
>>
>> Gottschalk, David wrote:
>>     
>>> I have 5 MailScanner machines.
>>>
>>> I had to do some configuration changes, so I restarted them. One of
>>> them now appears to be completely hosed. I've checked my
>>> configuration, and can't figure out what is going on. I don't see
>>> anything wrong at all.
>>>
>>> -sh-3.00$ sudo /usr/sbin/MailScanner --lint Checking version
>>> numbers...
>>> Version installed (4.60.8) does not match version stated in
>>> MailScanner.conf file (4.57.6), you may want to run
>>> upgrade_MailScanner_conf to ensure your MailScanner.conf file contains
>>> all the latest settings.
>>>
>>> Checking for SpamAssassin errors (if you use it)...
>>> Using SpamAssassin results cache
>>> Connected to SpamAssassin cache database SpamAssassin reported no
>>> errors.
>>> Using locktype = posix
>>> Creating hardcoded struct_flock subroutine for linux (Linux-type)
>>> MailScanner.conf says "Virus Scanners = auto"
>>> Found these virus scanners installed: bitdefender, clamavmodule
>>>
>>> Here is what is going on:
>>>
>>> 1. MailScanner starts, but just sits there does nothing:
>>>
>>> root     22553     1  0 13:58 ?        00:00:00 MailScanner: master
>>> waiting for children, sleeping
>>> root     22554 22553 70 13:58 ?        00:00:35 MailScanner: starting
>>> children
>>> root     22624 22553 69 13:58 ?        00:00:31 MailScanner: starting
>>> children
>>> root     22680 22553 67 13:58 ?        00:00:27 MailScanner: starting
>>> children
>>> root     22733 22553 73 13:58 ?        00:00:26 MailScanner: starting
>>> children
>>> root     22780 22553 44 13:58 ?        00:00:13 MailScanner: starting
>>> children
>>> root     22831 22553 42 13:58 ?        00:00:10 MailScanner: starting
>>> children
>>> root     22884 22553 47 13:58 ?        00:00:09 MailScanner: starting
>>> children
>>> root     22957 22553 44 13:59 ?        00:00:07 MailScanner: starting
>>> children
>>> root     23005 22553 31 13:59 ?        00:00:03 MailScanner: starting
>>> children
>>> root     23054 22553 49 13:59 ?        00:00:02 MailScanner: starting
>>> children
>>> If I trace a childre process, here is what it is doing over and over:
>>>
>>> sudo strace -p 19920
>>> Process 19920 attached - interrupt to quit read(12,
>>> "b560c3b9f08759aa3aa90:Trojan.Spy"..., 4096) = 4096 read(12,
>>> ":Trojan.Spy-3720\n353280:f604589b"..., 4096) = 4096 read(12,
>>> "55d8571268b7:Trojan.Clicker-133\n"..., 4096) = 4096 read(12,
>>> "5b7b476404e1ea6dc24d48e50bdfa:Tr"..., 4096) = 4096 read(12,
>>> "ba8f709e8b588009a34ee19ee1:Troja"..., 4096) = 4096 read(12,
>>> "d5:Trojan.Spy-3998\n284672:7801e5"..., 4096) = 4096 read(12,
>>> "6\n12288:6bfa649c48fc5982b231a2bb"..., 4096) = 4096
>>> brk(0x4f23000)                          = 0x4f23000
>>> read(12, "n.Spy-4128\n21504:3b072d4e76b7173"..., 4096) = 4096 read(12,
>>> "bbe4f7d647f109b5317dd8794715:Tro"..., 4096) = 4096 read(12,
>>> "n.Downloader-4997\n36864:bcc236c3"..., 4096) = 4096 read(12,
>>> "der-5167\n29696:f7d986ddcc013d8e0"..., 4096) = 4096 read(12,
>>> "f7e121997:Trojan.Downloader-5070"..., 4096) = 4096 read(12,
>>> ".Downloader-5107\n10240:efd91a6ea"..., 4096) = 4096 read(12,
>>> "ec7:Trojan.Downloader-4916\n2048:"..., 4096) = 4096 read(12,
>>> "nloader-5244\n4768:096cc4cd04d5cf"..., 4096) = 4096 read(12,
>>> ":Trojan.Bancos-3284\n271360:2bc5f"..., 4096) = 4096 read(12,
>>> "ncos-3342\n377344:04230b7482e189a"..., 4096) = 4096 read(12,
>>> "an.Spy-4204\n35840:4c8d2cbaf9ccaf"..., 4096) = 4096 read(12,
>>> "jan.Bancos-3492\n659968:49df0eba0"..., 4096) = 4096 read(12,
>>> "0:25f16f5f7ee84dee66f40f6c86e9b8"..., 4096) = 4096 read(12,
>>> "86:Trojan.Small-1634\n229888:3579"..., 4096) = 4096 read(12,
>>> "4d30b8cfcfe247337e424db964d816:T"..., 4096) = 4096 read(12,
>>> "576:3c44fb4c3e7a07aa1d49ce91c492"..., 4096) = 4096 read(12,
>>> "082cd8ac62e6878348b79:Trojan.Ban"..., 4096) = 4096
>>>
>>> 2. Strangely enough, if I start just MailScanner it works fine (with
>>> sendmail not running)
>>>
>>> 3. If I start MailScanner with sendmail to, it will just hang there as
>>> described. If I stop it, the master process dies for MailScanner, but
>>> the children hang.
>>>
>>> 4. I did have this problem, but I resolved it quickly by changing the
>>> option in MailScanner.conf to look for *.inc files.
>>>
>>> Jul 20 13:28:37 mr1 MailScanner[9747]: None of the files matched by
>>> the "Monitors For ClamAV Updates" patterns exist!
>>> Jul 20 13:28:47 mr1 MailScanner[8644]: None of the files matched by
>>> the "Monitors For ClamAV Updates" patterns exist!
>>>
>>> Any ideas? I'm banging my head.
>>>
>>> David Gottschalk
>>> david.gottschalk at emory.edu <mailto:david.gottschalk at emory.edu>
>>>
>>>       
>> What version of ClamAV? 0.90 takes a very long time to load signatures.
>> I do have one box in which it was very quick. The other ones took at least 3 minutes to 
>> get up and going. Upgrading to 0.91 fixed that.
>> --
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>> http://lists.mailscanner.info/mailman/listinfo/mailscanner
>>
>> Before posting, read http://wiki.mailscanner.info/posting
>>
>> Support MailScanner development - buy the book off the website!
>> -- 
>> MailScanner mailing list
>> mailscanner at lists.mailscanner.info
>> http://lists.mailscanner.info/mailman/listinfo/mailscanner
>>
>> Before posting, read http://wiki.mailscanner.info/posting
>>
>> Support MailScanner development - buy the book off the website! 
>>
>>
>>     

Jules

- -- 
Julian Field MEng CITP
www.MailScanner.info
Buy the MailScanner book at www.MailScanner.info/store

MailScanner customisation, or any advanced system administration help?
Contact me at Jules at Jules.FM

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