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Date: Sat, 22 Dec 2018 13:45:59 +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
Hey Adam,
I have compiled kernel successfully. Probablly it happened because of
KPROBES. I give u my config with KSPP options which is working well
togother with lkrg main.
Kernel KSSP options:
```
> option name | desired val | decision |
> reason || check result
>
> ===================================================================================================================
> CONFIG_BUG | y | ubuntu18 |
> self_protection || OK
> CONFIG_PAGE_TABLE_ISOLATION | y | ubuntu18 |
> self_protection || OK
> CONFIG_RETPOLINE | y | ubuntu18 |
> self_protection || OK
> CONFIG_X86_64 | y | ubuntu18 |
> self_protection || OK
> CONFIG_X86_SMAP | y | ubuntu18 |
> self_protection || OK
> CONFIG_X86_INTEL_UMIP | y | ubuntu18 |
> self_protection || OK
> CONFIG_STRICT_KERNEL_RWX | y | ubuntu18 |
> self_protection || OK
> CONFIG_DEBUG_WX | y | ubuntu18 |
> self_protection || OK
> CONFIG_RANDOMIZE_BASE | y | ubuntu18 |
> self_protection || OK
> CONFIG_RANDOMIZE_MEMORY | y | ubuntu18 |
> self_protection || OK
> CONFIG_STACKPROTECTOR_STRONG | y | ubuntu18 |
> self_protection || OK
> CONFIG_VMAP_STACK | y | ubuntu18 |
> self_protection || OK
> CONFIG_THREAD_INFO_IN_TASK | y | ubuntu18 |
> self_protection || OK
> CONFIG_SCHED_STACK_END_CHECK | y | ubuntu18 |
> self_protection || OK
> CONFIG_SLUB_DEBUG | y | ubuntu18 |
> self_protection || OK
> CONFIG_SLAB_FREELIST_HARDENED | y | ubuntu18 |
> self_protection || OK
> CONFIG_SLAB_FREELIST_RANDOM | y | ubuntu18 |
> self_protection || OK
> CONFIG_HARDENED_USERCOPY | y | ubuntu18 |
> self_protection || OK
> CONFIG_FORTIFY_SOURCE | y | ubuntu18 |
> self_protection || OK
> CONFIG_LOCK_DOWN_KERNEL | y | ubuntu18 |
> self_protection || FAIL: not found
> CONFIG_STRICT_MODULE_RWX | y | ubuntu18 |
> self_protection || OK
> CONFIG_MODULE_SIG | y | ubuntu18 |
> self_protection || OK
> CONFIG_MODULE_SIG_ALL | y | ubuntu18 |
> self_protection || OK
> CONFIG_MODULE_SIG_SHA512 | y | ubuntu18 |
> self_protection || FAIL: "is not set"
> CONFIG_SYN_COOKIES | y | ubuntu18 |
> self_protection || OK
> CONFIG_DEFAULT_MMAP_MIN_ADDR | 65536 | ubuntu18 |
> self_protection || OK
> CONFIG_BUG_ON_DATA_CORRUPTION | y | kspp |
> self_protection || OK
> CONFIG_PAGE_POISONING | y | kspp |
> self_protection || OK
> CONFIG_GCC_PLUGINS | y | kspp |
> self_protection || OK
> CONFIG_GCC_PLUGIN_RANDSTRUCT | y | kspp |
> self_protection || OK
> CONFIG_GCC_PLUGIN_STRUCTLEAK | y | kspp |
> self_protection || OK
> CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF_ALL | y | kspp |
> self_protection || OK
> CONFIG_GCC_PLUGIN_LATENT_ENTROPY | y | kspp |
> self_protection || OK
> CONFIG_REFCOUNT_FULL | y | kspp |
> self_protection || OK
> CONFIG_DEBUG_LIST | y | kspp |
> self_protection || OK
> CONFIG_DEBUG_SG | y | kspp |
> self_protection || OK
> CONFIG_DEBUG_CREDENTIALS | y | kspp |
> self_protection || OK
> CONFIG_DEBUG_NOTIFIERS | y | kspp |
> self_protection || OK
> CONFIG_MODULE_SIG_FORCE | y | kspp |
> self_protection || FAIL: "is not set"
> CONFIG_HARDENED_USERCOPY_FALLBACK | is not set | kspp |
> self_protection || FAIL: "y"
> CONFIG_GCC_PLUGIN_STACKLEAK | y | my |
> self_protection || FAIL: not found
> CONFIG_SLUB_DEBUG_ON | y | my |
> self_protection || OK
> CONFIG_SECURITY_DMESG_RESTRICT | y | my |
> self_protection || OK
> CONFIG_STATIC_USERMODEHELPER | y | my |
> self_protection || OK
> CONFIG_SECURITY_LOADPIN | y | my |
> self_protection || FAIL: "is not set"
> CONFIG_PAGE_POISONING_NO_SANITY | is not set | my |
> self_protection || OK
> CONFIG_PAGE_POISONING_ZERO | is not set | my |
> self_protection || OK
> CONFIG_SLAB_MERGE_DEFAULT | is not set | my |
> self_protection || OK
> CONFIG_SECURITY | y | ubuntu18 |
> security_policy || OK
> CONFIG_SECURITY_YAMA | y | ubuntu18 |
> security_policy || OK
> CONFIG_SECURITY_SELINUX_DISABLE | is not set | ubuntu18 |
> security_policy || OK
> CONFIG_SECCOMP | y | ubuntu18 |
> cut_attack_surface || OK
> CONFIG_SECCOMP_FILTER | y | ubuntu18 |
> cut_attack_surface || OK
> CONFIG_STRICT_DEVMEM | y | ubuntu18 |
> cut_attack_surface || OK
> CONFIG_ACPI_CUSTOM_METHOD | is not set | ubuntu18 |
> cut_attack_surface || FAIL: "m"
> CONFIG_COMPAT_BRK | is not set | ubuntu18 |
> cut_attack_surface || OK
> CONFIG_DEVKMEM | is not set | ubuntu18 |
> cut_attack_surface || OK
> CONFIG_COMPAT_VDSO | is not set | ubuntu18 |
> cut_attack_surface || OK: not found
> CONFIG_X86_PTDUMP | is not set | ubuntu18 |
> cut_attack_surface || OK
> CONFIG_ZSMALLOC_STAT | is not set | ubuntu18 |
> cut_attack_surface || OK
> CONFIG_PAGE_OWNER | is not set | ubuntu18 |
> cut_attack_surface || OK
> CONFIG_DEBUG_KMEMLEAK | is not set | ubuntu18 |
> cut_attack_surface || OK
> CONFIG_BINFMT_AOUT | is not set | ubuntu18 |
> cut_attack_surface || OK: not found
> CONFIG_MMIOTRACE_TEST | is not set | ubuntu18 |
> cut_attack_surface || OK: not found
> CONFIG_IO_STRICT_DEVMEM | y | kspp |
> cut_attack_surface || OK
> CONFIG_LEGACY_VSYSCALL_NONE | y | kspp |
> cut_attack_surface || OK
> CONFIG_BINFMT_MISC | is not set | kspp |
> cut_attack_surface || FAIL: "m"
> CONFIG_INET_DIAG | is not set | kspp |
> cut_attack_surface || FAIL: "m"
> CONFIG_KEXEC | is not set | kspp |
> cut_attack_surface || OK
> CONFIG_PROC_KCORE | is not set | kspp |
> cut_attack_surface || OK
> CONFIG_LEGACY_PTYS | is not set | kspp |
> cut_attack_surface || OK
> CONFIG_IA32_EMULATION | is not set | kspp |
> cut_attack_surface || OK
> CONFIG_X86_X32 | is not set | kspp |
> cut_attack_surface || OK
> CONFIG_MODIFY_LDT_SYSCALL | is not set | kspp |
> cut_attack_surface || FAIL: "y"
> CONFIG_HIBERNATION | is not set | kspp |
> cut_attack_surface || OK
> CONFIG_KPROBES | is not set |grsecurity|
> cut_attack_surface || FAIL: "y"
> CONFIG_UPROBES | is not set |grsecurity|
> cut_attack_surface || FAIL: "y"
> CONFIG_GENERIC_TRACER | is not set |grsecurity|
> cut_attack_surface || FAIL: "y"
> CONFIG_PROC_VMCORE | is not set |grsecurity|
> cut_attack_surface || FAIL: "y"
> CONFIG_PROC_PAGE_MONITOR | is not set |grsecurity|
> cut_attack_surface || FAIL: "y"
> CONFIG_USELIB | is not set |grsecurity|
> cut_attack_surface || OK
> CONFIG_CHECKPOINT_RESTORE | is not set |grsecurity|
> cut_attack_surface || OK
> CONFIG_USERFAULTFD | is not set |grsecurity|
> cut_attack_surface || OK
> CONFIG_HWPOISON_INJECT | is not set |grsecurity|
> cut_attack_surface || OK
> CONFIG_MEM_SOFT_DIRTY | is not set |grsecurity|
> cut_attack_surface || OK: not found
> CONFIG_DEVPORT | is not set |grsecurity|
> cut_attack_surface || FAIL: "y"
> CONFIG_DEBUG_FS | is not set |grsecurity|
> cut_attack_surface || FAIL: "y"
> CONFIG_NOTIFIER_ERROR_INJECTION | is not set |grsecurity|
> cut_attack_surface || OK
> CONFIG_ACPI_TABLE_UPGRADE | is not set | lockdown |
> cut_attack_surface || FAIL: "y"
> CONFIG_ACPI_APEI_EINJ | is not set | lockdown |
> cut_attack_surface || FAIL: "m"
> CONFIG_PROFILING | is not set | lockdown |
> cut_attack_surface || FAIL: "y"
> CONFIG_BPF_SYSCALL | is not set | lockdown |
> cut_attack_surface || FAIL: "y"
> CONFIG_MMIOTRACE | is not set | my |
> cut_attack_surface || OK
> CONFIG_KEXEC_FILE | is not set | my |
> cut_attack_surface || FAIL: "y"
> CONFIG_LIVEPATCH | is not set | my |
> cut_attack_surface || FAIL: "y"
> CONFIG_USER_NS | is not set | my |
> cut_attack_surface || FAIL: "y"
> CONFIG_IP_DCCP | is not set | my |
> cut_attack_surface || FAIL: "m"
> CONFIG_IP_SCTP | is not set | my |
> cut_attack_surface || FAIL: "m"
> CONFIG_FTRACE | is not set | my |
> cut_attack_surface || FAIL: "y"
> CONFIG_BPF_JIT | is not set | my |
> cut_attack_surface || FAIL: "y"
> CONFIG_ARCH_MMAP_RND_BITS | 32 | my
> |userspace_protection|| FAIL: "28"
>
> [-] config check is NOT PASSED: 29 errors
>
```
Other features i will check when i have a time. But for now it works
togother witk lkrg. I based on Centos 7.
I have another weird problem. After successfully compiled kernel i can't
use iptables:
[root@...alhost ~]# iptables -L
> iptables v1.4.21: can't initialize iptables table `filter': Table does
> not exist (do you need to insmod?)
> Perhaps iptables or your kernel needs to be upgraded.
>
Any ideas ?
pt., 21 gru 2018 o 18:14 Adam Zabrocki <pi3@....com.pl> napisał(a):
> Hey,
>
> Can you share the logs during LKRG initialization with higher log_level
> parameter like this:
>
> insmod p_lkrg.ko p_init_log_level=4
>
> Thanks,
> Adam
>
> On Fri, Dec 21, 2018 at 02:22:43AM +0100,
> bryn1u85 wrote:
> > Hey Adam,
> >
> > I put 2 screens with KSPP config kernel options. I used to check
> > configuration using this ->
> > https://github.com/a13xp0p0v/kconfig-hardened-check
>
> --
> pi3 (pi3ki31ny) - pi3 (at) itsec pl
> http://pi3.com.pl
>
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