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Message-ID: <20190409201711.GA12846@pi3.com.pl>
Date: Tue, 9 Apr 2019 22:17:11 +0200
From: Adam Zabrocki <pi3@....com.pl>
To: lkrg-users@...ts.openwall.com
Subject: Re: [kretprobe] register_kretprobe() for
<ovl_create_or_link> failed! [err=-22]
Hi,
ovl_create_or_link() is part of OverlayFS. If overlayfs is not loaded, LKRG
can't find necessary function. This hook is not critical and LKRG can continue
normal run. If you want LKRG to supported docker with overlayfs scenario, you
should load OverlayFS before LKRG.
Thanks,
Adam
On Tue, Apr 09, 2019 at 10:02:43PM +0200, bryn1u85 wrote:
> Hey guys,
>
> Im getting some weird message in dmesg. Someone can explain to me what does
> it mean ? How it affects on lkrg ?
>
>
> [937929.339622] [p_lkrg] Loading LKRG...
> > [937929.340850] [p_lkrg] Verifying 20 potential UMH paths for
> > whitelisting...
> > [937929.341112] [p_lkrg] 4 UMH paths were whitelisted...
> > [937930.048219] [p_lkrg] [kretprobe] register_kretprobe() for
> > <ovl_create_or_link> failed! [err=-22]
> > [937930.048241] [p_lkrg] ERROR: Can't hook ovl_create_or_link function :(
> > [937930.292244] [p_lkrg] System does NOT support SMEP. LKRG can't enforece
> > smep_panic :(
> > [937930.292267] [p_lkrg] LKRG initialized successfully!
> > [937930.310784] [p_lkrg] Disabling "clean" message.
> >
>
> Thanks !
> Best regards,
--
pi3 (pi3ki31ny) - pi3 (at) itsec pl
http://pi3.com.pl
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