Re: [Clamav-users] clamd stuck at 100% cpu usage

Jeff Thurston wrote:
> Im running clamav 91.2 (90.3 did the same thing).
> After about an hour or so the clamd process gets stuck at 100%.
> I've checked various logs for the cause and haven't found anything.
>
> Clamav is being run by amavis-new 2.3 if that info is of any interest.
>
> This is a recent problem, I ran 88.4 just fine for MONTHS, then 90.3 since
> the day after its release, Wednesday this started happening. I upgraded to
> 91.2 last night and the problem persists.
>
> Even though the clamd process is stuck at max cpu usage, it is still able to
> scan and detect viruses.
>
> Where should I start looking?
>
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>

We had clamd stuck at 100% during startup the other day. It looks like we had some bad signatures from sanesecurity. To fix this issue, we stopped clamd, deleted all files from /var/lib/clamav and restarted clamd - then ran freshclam and updated our sanesecurity sigs.

We've also seen clamd stuck at 100% when PDF scanning (new feature introduced recently) large files. We've disabled PDF scanning for now. We will need to put in our own check to prevent PDF scanning of files over a certain size.

-- 
Roberto Ullfig - rullfig@uic.edu

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