Date: Mon, 20 Jul 2020 14:33:59 +0200 From: Solar Designer <solar@...nwall.com> To: lkrg-users@...ts.openwall.com Subject: Re: kernel: BUG: unable to handle page fault for address: ffffffffab42fee7 On Mon, Jul 20, 2020 at 02:10:23PM +0200, Mikhail Morfikov wrote: > On 20/07/2020 13.20, Solar Designer wrote: > > > > Oh, I think I understand now. LKRG checks its known UMH program > > pathnames at its initialization time and then only allows those that > > were actually found on the system. Since you don't have > > /sbin/bridge-stp, LKRG doesn't allow it. Then it also fails on trying > > to block its execution because of CPA. > > > > As a temporary workaround, you can try creating /sbin/bridge-stp as a > > copy of /bin/false. > > It looks like this doesn't help much: > > # cp /bin/false /sbin/bridge-stp > # ls -al /sbin/bridge-stp > -rwxr-xr-x 1 root root 35584 2020-07-20 14:02:00 /sbin/bridge-stp* You need to restart LKRG after this step (rmmod, modprobe) for it to detect the presence of /sbin/bridge-stp. Alexander
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