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Date: Mon, 16 Sep 2019 14:09:19 +0300
From: "Alexander V. Gusev" <agusev@...ralinux.ru>
To: lkrg-users@...ts.openwall.com
Subject: lkrg-0.7 lkrg.hide=1 causes LOST MODULE
Hi!
I am having trouble with sysctl lkrg.hide. lkrg-0.7 is
compiled from source on Debian 10 (4.19.37-5). I insmod
p_lkrg.ko, then do:
sysctl lrkg.hide=1
In a few seconds lkrg starts complaining that a module has
been lost and is missing from module list. Looks like lkrg
forgot that it's himself that is missing because it just
did hide itself!
Perhaps I am missing something or doing something wrong?
dmesg output is as follows:
[p_lkrg] ALERT !!! FOUND LESS[1] MODULES IN CURRENT SYSTEM IN
MODULE LIST[63] THAN IN DB MODULE LIST[64]
[p_lkrg] LOST MODULE:
module at addr[000000002061e0af] module core[000000008fbf4b8b]
with size[0x11000] hash[0xd71b46568b40ba8f]
[p_lkrg] ** STRANGE BEHAVIOUR DETECTED - MODULE FOUND IN DB BUT
NOT IN OS !! **
** RACE CONDITION MIGHT APPEARED WHEN SYSTEM WAS
REBUILDING DATABASE **
[p_lkrg] ALERT !!! FOUND LESS[1] MODULES IN CURRENT SYSTEM IN
KOBJ[63] THAN IN DB KOBJ[64]
[p_lkrg] LOST MODULE:
module at addr[000000002061e0af] module core[000000008fbf4b8b]
with size[0x11000] hash[0xd71b46568b40ba8f]
[p_lkrg] ** STRANGE BEHAVIOUR DETECTED - MODULE FOUND IN DB BUT
NOT IN OS !! **
** RACE CONDITION MIGHT APPEARED WHEN SYSTEM WAS
REBUILDING DATABASE **
[p_lkrg] System is clean!
Thanks!
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