Date: Mon, 20 Jul 2020 00:22:20 +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 Sun, Jul 19, 2020 at 07:28:47PM +0200, Mikhail Morfikov wrote: > I wanted to play with KVM, and it looks like that LKRG has some issues with it. > After typing the following command in a terminal: > > # virsh net-start default > > I got this: > > kernel: virbr0: port 1(virbr0-nic) entered blocking state > kernel: virbr0: port 1(virbr0-nic) entered disabled state > kernel: device virbr0-nic entered promiscuous mode > kernel: [p_lkrg] Blocked usermodehelper execution of [/sbin/bridge-stp] What is your value of lkrg.umh_validate? We have /sbin/bridge-stp on LKRG's list of allowed program pathnames, so perhaps you altered this setting to completely disallow UMH (lkrg.umh_validate=2)? If so, for your use you'll want to revert to our default (lkrg.umh_validate=1). The rest of what you see is a result of LKRG's UMH blocking being incompatible with recent Linux's CPA. Thank you for reporting this. Alexander
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