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Date: Tue, 9 Apr 2019 22:33:31 +0200
From: bryn1u85 <m.bryn1u@...il.com>
To: lkrg-users@...ts.openwall.com
Subject: Re: [kretprobe] register_kretprobe() for
<ovl_create_or_link> failed! [err=-22]
Okey, thank you.
wt., 9 kwi 2019 o 22:16 Adam Zabrocki <pi3@....com.pl> napisał(a):
> 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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