Date: Wed, 19 Dec 2018 11:35:27 +0100 From: bryn1u85 <m.bryn1u@...il.com> To: lkrg-users@...ts.openwall.com Subject: Re: insmod: ERROR: could not insert module p_lkrg.ko: No buffer space available My output. [root@...alhost lkrg-main]# dmesg | tail -20 [ 3.836920] cryptd: max_cpu_qlen set to 1000 [ 3.851179] AVX2 version of gcm_enc/dec engaged. [ 3.851180] AES CTR mode by8 optimization enabled [ 3.905981] EXT4-fs (vda1): mounted filesystem with ordered data mode. Opts: (null) [ 4.125758] Adding 7077884k swap on /dev/mapper/centos-swap. Priority:-2 extents:1 across:7077884k FS [ 4.757109] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready [ 11.546012] random: crng init done [ 11.546017] random: 7 urandom warning(s) missed due to ratelimiting [ 296.265199] p_lkrg: loading out-of-tree module taints kernel. [ 296.265283] p_lkrg: module verification failed: signature and/or required key missing - tainting kernel [ 296.266610] [p_lkrg] Loading LKRG... [ 296.302774] [p_lkrg] Can't initialize exploit detection features! Exiting... [ 315.920095] [p_lkrg] Loading LKRG... [ 315.950728] [p_lkrg] Can't initialize exploit detection features! Exiting... [ 342.557674] [p_lkrg] Loading LKRG... [ 342.589567] [p_lkrg] Can't initialize exploit detection features! Exiting... [41040.104115] [p_lkrg] Loading LKRG... [41040.117676] [p_lkrg] [kretprobe] register_kretprobe() for <__x64_sys_execve> failed! [err=-38] [41040.118335] [p_lkrg] ERROR: Can't hook execve syscall :( [41040.139079] [p_lkrg] Can't initialize exploit detection features! Exiting... [root@...alhost lkrg-main]# śr., 19 gru 2018 o 03:51 Adam Zabrocki <pi3@....com.pl> napisał(a): > On Tue, Dec 18, 2018 at 09:03:44PM +0100, bryn1u85 wrote: > > hey guys, > > > > I recompiled kernel to kernel-4.19.10. After that im trying to run lkrg > but > > im getting errors like below: > > > > > > [root@...alhost output]# insmod p_lkrg.ko > > insmod: ERROR: could not insert module p_lkrg.ko: No buffer space > available > > [root@...alhost output]# > > > > [ 97.954081] p_lkrg: loading out-of-tree module taints kernel. > > [ 97.954346] p_lkrg: module verification failed: signature and/or > > required key missing - tainting kernel > > [ 97.955845] [p_lkrg] Loading LKRG... > > [ 97.990086] [p_lkrg] Can't initialize exploit detection features! > > Exiting... > > [root@...alhost output]# > > > > What can i do in this situation ? > > Thanks ! > > Hi, > > I believe you've already asked the same question a few times. > Alexander replied to you here: > > https://www.openwall.com/lists/lkrg-users/2018/12/06/1 > > Additionally, that can be useful for you too: > > > https://forums.gentoo.org/viewtopic-p-8247498.html?sid=72c22d571ef610bb77a41150177a2939#8247498 > > In short: > > "For the future reference, if you would like to know why LKRG fails > initialization you can try this simple scenario: > LKRG module has a parameter p_init_log_level which defines default > log_level > which is going to be used during initialization. You can read more about > log_level option (and in general about communication channel) here: > > https://openwall.info/wiki/p_lkrg/Examples#Communication-channel > > In short it might be a number between 0-4 or 0-6 (if debugging compilation > was > used). If LKRG fails initialization I'm suggesting to use at least > number 4 for this parameter (e.g. # insmod p_lkrg.ko p_init_log_level=4). > It > will give more information about the root of the problem. If debug option > is > enabled number 5 and 6 is also available but you need to be carefully > using it > to not spam the kernel with too many logs." > > Thanks, > Adam > > -- > pi3 (pi3ki31ny) - pi3 (at) itsec pl > http://pi3.com.pl > Content of type "text/html" skipped
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