Server went into the freezer, I believe it is a result of bad cgrop distribution, how can I prove it?

Good morning, I have a server that went into a freezer!

When looking for the reason I found errors related to cgroup and memory, how can I draw the conclusion that it crashed due to cgroup memory misallocation?

lab$ sar -f /var/log/sa/sa30

11:10:01 AM all 9.39 0.00 10.06 11.71 0.00 68.85
11:20:02 AM all 16.80 0.00 8.95 5.05 0.00 69.20
11:30:01 AM all 4.14 0.00 5.88 7.12 0.00 82.85
Average: all 5.89 0.00 5.73 5.70 0.00 82.68
12:28:37 PM LINUX RESTART
12:39:30 PM LINUX RESTART
12:40:01 PM CPU %user %nice %system %iowait %steal %idle
12:50:01 PM all 1.66 0.01 3.55 0.22 0.00 94.56
Average: all 1.66 0.01 3.55 0.22 0.00 94.56
12:57:58 PM LINUX RESTART
01:50:01 PM CPU %user %nice %system %iowait %steal %idle
02:00:01 PM all 1.56 0.00 1.83 0.07 0.00 96.54
02:10:01 PM all 0.72 0.00 1.01 0.06 0.00 98.22
02:20:01 PM all 2.11 0.00 1.16 0.07 0.00 96.66

lab log $ lspci | grep ERROR
7f:14.2 System peripheral: Intel Corporation Haswell-E Integrated Memory Controller 0 Channel 0 ERROR Registers (rev 02)
7f:14.3 System peripheral: Intel Corporation Haswell-E Integrated Memory Controller 0 Channel 1 ERROR Registers (rev 02)
7f:17.2 System peripheral: Intel Corporation Haswell-E Integrated Memory Controller 1 Channel 0 ERROR Registers (rev 02)
7f:17.3 System peripheral: Intel Corporation Haswell-E Integrated Memory Controller 1 Channel 1 ERROR Registers (rev 02)
ff:14.2 System peripheral: Intel Corporation Haswell-E Integrated Memory Controller 0 Channel 0 ERROR Registers (rev 02)
ff:14.3 System peripheral: Intel Corporation Haswell-E Integrated Memory Controller 0 Channel 1 ERROR Registers (rev 02)
ff:17.2 System peripheral: Intel Corporation Haswell-E Integrated Memory Controller 1 Channel 0 ERROR Registers (rev 02)
ff:17.3 System peripheral: Intel Corporation Haswell-E Integrated Memory Controller 1 Channel 1 ERROR Registers (rev 02)

lab$ ls -lha dmesg
-rw-r--r-- 1 root root 121K Jan 30 12:57 dmesg

lab$ cat dmesg |egrep -i "Memory|error|fail"

Reserving 145MB of memory at 48MB for crashkernel (System RAM: 264192MB)
PM: Registered nosave memory: 000000000009c000 - 00000000000a0000
PM: Registered nosave memory: 00000000000a0000 - 00000000000e0000
PM: Registered nosave memory: 00000000000e0000 - 0000000000100000
PM: Registered nosave memory: 000000007a289000 - 000000007af0b000
PM: Registered nosave memory: 000000007af0b000 - 000000007b93b000
PM: Registered nosave memory: 000000007b93b000 - 000000007bab4000
PM: Registered nosave memory: 000000007bae9000 - 000000007baff000
PM: Registered nosave memory: 000000007bb00000 - 0000000090000000
PM: Registered nosave memory: 0000000090000000 - 00000000feda8000
PM: Registered nosave memory: 00000000feda8000 - 00000000fedac000
PM: Registered nosave memory: 00000000fedac000 - 00000000ff310000
PM: Registered nosave memory: 00000000ff310000 - 0000000100000000
Memory: 264373124k/270532608k available (5325k kernel code, 2193048k absent, 3966436k reserved, 7013k data, 1276k init)
please try 'cgroup_disable=memory' option if you don't want memory cgroups
Initializing cgroup subsys memory
Freeing initrd memory: 16711k freed
ipmi_si ipmi_si.0: Could not enable interrupts, failed set, using polled mode.
ERST: Error Record Serialization Table (ERST) support is initialized.
Non-volatile memory driver v1.3
crash memory driver: version 1.1
Freeing unused kernel memory: 1276k freed
Freeing unused kernel memory: 800k freed
Freeing unused kernel memory: 1588k freed
megaraid_sas 0000:03:00.0: Controller type: MR,Memory size is: 1024MB
ACPI Error: No handler for Region [SYSI] (ffff884053edf2b8) [IPMI] (20090903/evregion-319)
ACPI Error: Region IPMI(7) has no handler (20090903/exfldio-295)
ACPI Error (psparse-0537): Method parse/execution failed [_SB_.PMI0.GHL] (Node ffff8820538b41a0), AE_NOT_EXIST
ACPI Error (psparse-0537): Method parse/execution failed [_SB.PMI0._PMC] (Node ffff8820538b41f0), AE_NOT_EXIST