not sure if coreboot or kernel related.

vanila kernel 4.19.62 with SLAB allocater build works fine.

Debians Busters default kernel 4.19.x with SLUB panics.

see:

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=930029

see Bootlog:

oading Linux 4.19.0-5-amd64 ...Loading Linux 4.19.0-5-amd64 ..
.
Loading initial ramdisk ...Loading initial ramdisk ..
.
[    0.000000] Linux version 4.19.0-5-amd64
(debian-kernel@lists.debian.org) (g)
[    0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.19.0-5-amd64
root=UUID=0
[    0.000000] random: get_random_u32 called from
bsp_init_amd+0x20b/0x2b0 with0
[    0.000000] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating
point reg'
[    0.000000] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
[    0.000000] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
[    0.000000] x86/fpu: xstate_offset[2]:  576, xstate_sizes[2]:  256
[    0.000000] x86/fpu: Enabled xstate features 0x7, context size is 832
bytes,.
[    0.000000] BIOS-provided physical RAM map:
[    0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable
[    0.000000] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff]
reserved
[    0.000000] BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff]
reserved
[    0.000000] BIOS-e820: [mem 0x0000000000100000-0x00000000b7d97fff] usable
[    0.000000] BIOS-e820: [mem 0x00000000b7d98000-0x00000000b7ffffff]
reserved
[    0.000000] BIOS-e820: [mem 0x00000000b8000000-0x00000000bfffafff] usable
[    0.000000] BIOS-e820: [mem 0x00000000bfffb000-0x00000000cfffffff]
reserved
[    0.000000] BIOS-e820: [mem 0x00000000fcf00000-0x00000000fcf03fff]
reserved
[    0.000000] BIOS-e820: [mem 0x00000000feb00000-0x00000000feb00fff]
reserved
[    0.000000] BIOS-e820: [mem 0x00000000fec00000-0x00000000fec00fff]
reserved
[    0.000000] BIOS-e820: [mem 0x00000000fed00000-0x00000000fed00fff]
reserved
[    0.000000] BIOS-e820: [mem 0x00000000fed40000-0x00000000fed44fff]
reserved
[    0.000000] BIOS-e820: [mem 0x0000000100000000-0x0000000437ffffff] usable
[    0.000000] BIOS-e820: [mem 0x0000000438000000-0x000000043fffffff]
reserved
[    0.000000] bootconsole [earlyser0] enabled
[    0.000000] NX (Execute Disable) protection: active
[    0.000000] SMBIOS 2.7 present.
[    0.000000] DMI: ASUS KGPE-D16/KGPE-D16, BIOS 4.9-1859-gf3510cbe36
05/31/2019
[    0.000000] tsc: Fast TSC calibration using PIT
[    0.000000] tsc: Detected 2500.121 MHz processor
[    0.010404] AGP: No AGP bridge found
[    0.013881] last_pfn = 0x438000 max_arch_pfn = 0x400000000
[    0.021404] x86/PAT: Configuration [0-7]: WB  WC  UC- UC  WB  WP  UC-
WT 
Memory KASLR using RDTSC...
[    0.030856] last_pfn = 0xbfffb max_arch_pfn = 0x400000000
[    0.042030] Using GB pages for direct mapping
[    0.046429] RAMDISK: [mem 0x3476f000-0x363aefff]
[    0.050877] ACPI: Early table checksum verification disabled
[    0.056563] ACPI: RSDP 0x00000000000F6250 000024 (v02 COREv4)
[    0.062225] ACPI: XSDT 0x00000000B7D990E0 000074 (v01 COREv4 COREBOOT
000000)
[    0.070720] ACPI: FACP 0x00000000B7D9B9A0 0000F4 (v03 COREv4 COREBOOT
000000)
[    0.079213] ACPI: DSDT 0x00000000B7D99280 00271A (v02 COREv4 COREBOOT
000000)
[    0.087704] ACPI: FACS 0x00000000B7D99240 000040
[    0.092298] ACPI: FACS 0x00000000B7D99240 000040
[    0.096890] ACPI: SSDT 0x00000000B7D9BAA0 0020F2 (v02 COREv4 COREBOOT
000000)
[    0.105383] ACPI: MCFG 0x00000000B7D9DBA0 00003C (v01 COREv4 COREBOOT
000000)
[    0.113875] ACPI: APIC 0x00000000B7D9DBE0 0000DE (v02 COREv4 COREBOOT
000000)
[    0.122369] ACPI: SRAT 0x00000000B7D9DCC0 0001A8 (v01 COREv4 COREBOOT
000000)
[    0.130862] ACPI: SLIT 0x00000000B7D9DE68 000030 (v01 COREv4 COREBOOT
000000)
[    0.139355] ACPI: SRAT 0x00000000B7D9DEA0 0001A8 (v01 COREv4 COREBOOT
000000)
[    0.147848] ACPI: SLIT 0x00000000B7D9E048 000030 (v01 COREv4 COREBOOT
000000)
[    0.156341] ACPI: IVRS 0x00000000B7D9E080 0000BC (v01 COREv4 COREBOOT
000000)
[    0.164834] ACPI: HPET 0x00000000B7D9E140 000038 (v01 COREv4 COREBOOT
000000)
[    0.173380] SRAT: PXM 0 -> APIC 0x00 -> Node 0
[    0.177747] SRAT: PXM 0 -> APIC 0x01 -> Node 0
[    0.182167] SRAT: PXM 0 -> APIC 0x02 -> Node 0
[    0.186586] SRAT: PXM 0 -> APIC 0x03 -> Node 0
[    0.191006] SRAT: PXM 0 -> APIC 0x04 -> Node 0
[    0.195426] SRAT: PXM 0 -> APIC 0x05 -> Node 0
[    0.199845] SRAT: PXM 0 -> APIC 0x06 -> Node 0
[    0.204264] SRAT: PXM 0 -> APIC 0x07 -> Node 0
[    0.208685] SRAT: PXM 1 -> APIC 0x08 -> Node 1
[    0.213104] SRAT: PXM 1 -> APIC 0x09 -> Node 1
[    0.217525] SRAT: PXM 1 -> APIC 0x0a -> Node 1
[    0.221944] SRAT: PXM 1 -> APIC 0x0b -> Node 1
[    0.226364] SRAT: PXM 1 -> APIC 0x0c -> Node 1
[    0.230784] SRAT: PXM 1 -> APIC 0x0d -> Node 1
[    0.235204] SRAT: PXM 1 -> APIC 0x0e -> Node 1
[    0.239624] SRAT: PXM 1 -> APIC 0x0f -> Node 1
[    0.244046] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff]
[    0.250025] ACPI: SRAT: Node 1 PXM 1 [mem 0x00100000-0xbfffffff]
[    0.256004] ACPI: SRAT: Node 1 PXM 1 [mem 0x100000000-0x43fffffff]
[    0.262162] NUMA: Node 1 [mem 0x00100000-0xbfffffff] + [mem
0x100000000-0x43]
[    0.272647] NODE_DATA(1) allocated [mem 0x437ff8000-0x437ffcfff]
[    0.278660] node 0 must be removed before remove section 134
[    0.284272] Zone ranges:
[    0.286769]   DMA      [mem 0x0000000000001000-0x0000000000ffffff]
[    0.292922]   DMA32    [mem 0x0000000001000000-0x00000000ffffffff]
[    0.299075]   Normal   [mem 0x0000000100000000-0x0000000437ffffff]
[    0.305228]   Device   empty
[    0.308088] Movable zone start for each node
[    0.312335] Early memory node ranges
[    0.315888]   node   0: [mem 0x0000000000001000-0x000000000009efff]
[    0.322128]   node   1: [mem 0x0000000000100000-0x00000000b7d97fff]
[    0.328368]   node   1: [mem 0x00000000b8000000-0x00000000bfffafff]
[    0.334607]   node   1: [mem 0x0000000100000000-0x0000000437ffffff]
[    0.340850] Reserved but unavailable: 98 pages
[    0.340852] Initmem setup node 1 [mem
0x0000000000100000-0x0000000437ffffff]
[    0.466889] ACPI: PM-Timer IO Port: 0x820
[    0.470732] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
[    0.476453] IOAPIC[0]: apic_id 32, version 33, address 0xfec00000,
GSI 0-23
[    0.483376] IOAPIC[1]: apic_id 33, version 33, address 0xfd000000,
GSI 24-55
[    0.490395] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[    0.496721] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 low level)
[    0.503224] Using ACPI (MADT) for SMP configuration information
[    0.509114] ACPI: HPET id: 0x43538301 base: 0xfed00000
[    0.514232] smpboot: Allowing 16 CPUs, 0 hotplug CPUs
[    0.519255] NODE_DATA(0) allocated [mem 0x00093000-0x00097fff]
[    0.525066] Initmem setup node 0 [mem
0x0000000000001000-0x000000000009efff]
[    0.532110] PM: Registered nosave memory: [mem 0x00000000-0x00000fff]
[    0.538492] PM: Registered nosave memory: [mem 0x0009f000-0x0009ffff]
[    0.544905] PM: Registered nosave memory: [mem 0x000a0000-0x000effff]
[    0.551318] PM: Registered nosave memory: [mem 0x000f0000-0x000fffff]
[    0.557733] PM: Registered nosave memory: [mem 0xb7d98000-0xb7ffffff]
[    0.564146] PM: Registered nosave memory: [mem 0xbfffb000-0xcfffffff]
[    0.570558] PM: Registered nosave memory: [mem 0xd0000000-0xfcefffff]
[    0.576971] PM: Registered nosave memory: [mem 0xfcf00000-0xfcf03fff]
[    0.583384] PM: Registered nosave memory: [mem 0xfcf04000-0xfeafffff]
[    0.589797] PM: Registered nosave memory: [mem 0xfeb00000-0xfeb00fff]
[    0.596209] PM: Registered nosave memory: [mem 0xfeb01000-0xfebfffff]
[    0.602622] PM: Registered nosave memory: [mem 0xfec00000-0xfec00fff]
[    0.609035] PM: Registered nosave memory: [mem 0xfec01000-0xfecfffff]
[    0.615449] PM: Registered nosave memory: [mem 0xfed00000-0xfed00fff]
[    0.621862] PM: Registered nosave memory: [mem 0xfed01000-0xfed3ffff]
[    0.628275] PM: Registered nosave memory: [mem 0xfed40000-0xfed44fff]
[    0.634688] PM: Registered nosave memory: [mem 0xfed45000-0xffffffff]
[    0.641103] [mem 0xd0000000-0xfcefffff] available for PCI devices
[    0.647167] Booting paravirtualized kernel on bare hardware
[    0.652717] clocksource: refined-jiffies: mask: 0xffffffff
max_cycles: 0xfffs
[    0.795517] setup_percpu: NR_CPUS:512 nr_cpumask_bits:512
nr_cpu_ids:16 nr_n2
[    0.804648] percpu: Embedded 44 pages/cpu s143256 r8192 d28776 u262144
[    0.811044] Built 2 zonelists, mobility grouping on.  Total pages:
4095761
[    0.817843] Policy zone: Normal
[    0.820965] Kernel command line:
BOOT_IMAGE=/boot/vmlinuz-4.19.0-5-amd64 roo0
[    0.854959] AGP: Checking aperture...
[    0.866845] AGP: No AGP bridge found
[    0.870252] AGP: Node 0: aperture [bus addr 0xf8000000-0xfbffffff] (64MB)
[    0.877011] AGP: Node 1: aperture [bus addr 0xf8000000-0xfbffffff] (64MB)
[    0.975916] Memory: 16260640K/16643268K available (10252K kernel
code, 1242K)
[    0.989765] BUG: unable to handle kernel NULL pointer dereference at
00000000
[    0.997523] PGD 0 P4D 0
[    1.000037] Oops: 0002 [#1] SMP NOPTI
[    1.003678] CPU: 0 PID: 0 Comm: swapper Not tainted 4.19.0-5-amd64 #1
Debian3
[    1.011562] Hardware name: ASUS KGPE-D16/KGPE-D16, BIOS
4.9-1859-gf3510cbe369
[    1.019541] RIP: 0010:_raw_spin_lock+0xc/0x20
[    1.023869] Code: 01 00 00 75 05 48 89 d8 5b c3 e8 1f f7 9a ff eb f4
66 66 2b
[    1.042588] RSP: 0000:ffffffff91803e08 EFLAGS: 00010046
[    1.047788] RAX: 0000000000000000 RBX: ffff996c80083d80 RCX:
4132840b73c45ab1
[    1.054893] RDX: 0000000000000001 RSI: 0000000000000000 RDI:
0000000000000000
[    1.061999] RBP: ffffffff91803ec8 R08: ffff996c80080000 R09:
ffff996c80083d80
[    1.069107] R10: 0000000000000000 R11: ffff996c80080000 R12:
ffffed5880002000
[    1.076213] R13: 00000000802a0002 R14: 0000000000000001 R15:
ffff996c80083c00
[    1.083320] FS:  0000000000000000(0000) GS:ffff9970a7c00000(0000)
knlGS:00000
[    1.091380] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    1.097098] CR2: 0000000000000000 CR3: 0000000023c0a000 CR4:
00000000000406b0
[    1.104206] Call Trace:
[    1.106638]  deactivate_slab.isra.71+0x2d2/0x630
[    1.111232]  ? bootstrap+0x1f/0x12c
[    1.114693]  ? kmem_cache_alloc+0x1b8/0x1c0
[    1.118854]  bootstrap+0x66/0x12c
[    1.122148]  kmem_cache_init+0x8c/0x145
[    1.125962]  start_kernel+0x2a6/0x52c
[    1.129602]  secondary_startup_64+0xa4/0xb0
[    1.133759] Modules linked in:
[    1.136791] CR2: 0000000000000000
[    1.140094] ---[ end trace a6e00f6a2ecfb185 ]---
[    1.144679] RIP: 0010:_raw_spin_lock+0xc/0x20
[    1.149011] Code: 01 00 00 75 05 48 89 d8 5b c3 e8 1f f7 9a ff eb f4
66 66 2b
[    1.167730] RSP: 0000:ffffffff91803e08 EFLAGS: 00010046
[    1.172929] RAX: 0000000000000000 RBX: ffff996c80083d80 RCX:
4132840b73c45ab1
[    1.180036] RDX: 0000000000000001 RSI: 0000000000000000 RDI:
0000000000000000
[    1.187143] RBP: ffffffff91803ec8 R08: ffff996c80080000 R09:
ffff996c80083d80
[    1.194248] R10: 0000000000000000 R11: ffff996c80080000 R12:
ffffed5880002000
[    1.201355] R13: 00000000802a0002 R14: 0000000000000001 R15:
ffff996c80083c00
[    1.208462] FS:  0000000000000000(0000) GS:ffff9970a7c00000(0000)
knlGS:00000
[    1.216520] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    1.222241] CR2: 0000000000000000 CR3: 0000000023c0a000 CR4:
00000000000406b0
[    1.229350] Kernel panic - not syncing: Attempted to kill the idle task!
[    1.236028] ---[ end Kernel panic - not syncing: Attempted to kill
the idle -
[    1.243910] PANIC: double fault, error_code: 0xffffffff9087cc95
[    1.249801] CPU: 0 PID: 0 Comm: swapper Tainted: G      D          
4.19.0-53
[    1.259073] Hardware name: ASUS KGPE-D16/KGPE-D16, BIOS
4.9-1859-gf3510cbe369
[    1.267048] RIP: 0246:0x10
[    1.269732] Code: Bad RIP value.
[    1.272939] RSP: 0000:0000000000000000 EFLAGS: ffffffff91803e58
[    1.278832] RAX: 000000000000004a RBX: ffffffff91813700 RCX:
ffffffff9184dda8
[    1.285938] RDX: 0000000000000000 RSI: 0000000000000096 RDI:
0000000000000046
[    1.293045] RBP: ffffffff91803ec8 R08: 00000000000000d2 R09:
2d2d2d5d20216b73
[    1.300151] R10: 74206c6c696b206f R11: 20656c6469206568 R12:
0000000000000000
[    1.307257] R13: 0000000000000000 R14: 0000000000000009 R15:
0000000000000001
[    1.314364] FS:  0000000000000000 GS:  0000000000000000
[    1.319564] Kernel panic - not syncing: Machine halted.
[    1.324770] ---[ end Kernel panic - not syncing: Machine halted. ]---