Not sure if this helps but this is in the syslog a few minutes before the crash
Sep 14 22:29:44 pve2 systemd[1]: Stopped User Runtime Directory /run/user/0.
Sep 14 22:29:44 pve2 systemd[1]: Removed slice User Slice of UID 0.
Sep 14 22:30:00 pve2 systemd[1]: Starting Proxmox VE replication runner...
Sep 14 22:30:01 pve2 systemd[1]: pvesr.service: Succeeded.
Sep 14 22:30:01 pve2 systemd[1]: Finished Proxmox VE replication runner.
Sep 14 22:31:00 pve2 systemd[1]: Starting Proxmox VE replication runner...
Sep 14 22:31:01 pve2 systemd[1]: pvesr.service: Succeeded.
Sep 14 22:31:01 pve2 systemd[1]: Finished Proxmox VE replication runner.
Sep 14 22:32:00 pve2 systemd[1]: Starting Proxmox VE replication runner...
Sep 14 22:32:01 pve2 systemd[1]: pvesr.service: Succeeded.
Sep 14 22:32:01 pve2 systemd[1]: Finished Proxmox VE replication runner.
Sep 14 22:33:00 pve2 systemd[1]: Starting Proxmox VE replication runner...
Sep 14 22:33:01 pve2 systemd[1]: pvesr.service: Succeeded.
Sep 14 22:33:01 pve2 systemd[1]: Finished Proxmox VE replication runner.
Sep 14 22:34:00 pve2 systemd[1]: Starting Proxmox VE replication runner...
Sep 14 22:34:01 pve2 systemd[1]: pvesr.service: Succeeded.
Sep 14 22:34:01 pve2 systemd[1]: Finished Proxmox VE replication runner.
Sep 14 22:34:39 pve2 kernel: BUG: stack guard page was hit at 000000004d9b54bd (stack is 00000000fcad5f84..0000000099f54ea6)
Sep 14 22:34:40 pve2 kernel: kernel stack overflow (page fault): 0000 [#1] SMP NOPTI
Sep 14 22:34:40 pve2 kernel: CPU: 4 PID: 1316 Comm: pvestatd Tainted: P O 5.11.22-4-pve #1
Sep 14 22:34:40 pve2 kernel: Hardware name: MicroElectronics B241/PRIME A320M-K, BIOS 9102 07/11/2018
Sep 14 22:34:40 pve2 kernel: RIP: 0010:__memcpy+0x12/0x20
Sep 14 22:34:40 pve2 kernel: Code: cc cc cc cc cc cc cc cc 48 8b 05 c1 3a 70 01 c3 cc cc cc cc cc cc cc cc 0f 1f 44 00 00 48 89 f8 48 89 d1 48 c1 e9 03 83 e2 07 <f3> 48 a5 89 d1 f3 a4 c3 66 0f 1f 44 00 00 48 89 f8 48 89 d1 f3 a4
Sep 14 22:34:40 pve2 kernel: RSP: 0018:ffffa2fc816e3d90 EFLAGS: 00010246
Sep 14 22:34:40 pve2 kernel: RAX: ffff9337982f3080 RBX: ffffa2fc816e3e30 RCX: 00000000000002ce
Sep 14 22:34:40 pve2 kernel: RDX: 0000000000000000 RSI: ffffa2fc816e4000 RDI: ffff9337982f3250
Sep 14 22:34:40 pve2 kernel: RBP: ffffa2fc816e3da0 R08: 0000000000000000 R09: ffffa2fc8c4b0000
Sep 14 22:34:40 pve2 kernel: R10: 0000000000000004 R11: ffffa2fc80000000 R12: ffffa2fc816e3e30
Sep 14 22:34:40 pve2 kernel: R13: 0000000000000000 R14: ffffa2fc816e3eb0 R15: ffff9337982f3080
Sep 14 22:34:40 pve2 kernel: FS: 00007f5bf221b280(0000) GS:ffff933e3fd00000(0000) knlGS:0000000000000000
Sep 14 22:34:40 pve2 kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Sep 14 22:34:40 pve2 kernel: CR2: ffffa2fc816e4000 CR3: 000000011daec000 CR4: 00000000003506e0
Sep 14 22:34:40 pve2 kernel: Call Trace:
Sep 14 22:34:40 pve2 kernel: ? arch_dup_task_struct+0x1a/0x30
Sep 14 22:34:40 pve2 kernel: copy_process+0x2e6/0x1c10
Sep 14 22:34:40 pve2 kernel: ? handle_mm_fault+0x11b7/0x1a70
Sep 14 22:34:40 pve2 kernel: ? __alloc_file+0x90/0xe0
Sep 14 22:34:40 pve2 kernel: kernel_clone+0x9d/0x3e0
Sep 14 22:34:40 pve2 kernel: __do_sys_clone+0x5d/0x80
Sep 14 22:34:40 pve2 kernel: __x64_sys_clone+0x25/0x30
Sep 14 22:34:40 pve2 kernel: do_syscall_64+0x38/0x90
Sep 14 22:34:40 pve2 kernel: entry_SYSCALL_64_after_hwframe+0x44/0xa9
Sep 14 22:34:40 pve2 kernel: RIP: 0033:0x7f5bf23224bb
Sep 14 22:34:40 pve2 kernel: Code: ed 0f 85 f8 00 00 00 64 4c 8b 0c 25 10 00 00 00 45 31 c0 4d 8d 91 d0 02 00 00 31 d2 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 91 00 00 00 41 89 c5 85 c0 0f 85 9e 00 00
Sep 14 22:34:40 pve2 kernel: RSP: 002b:00007ffe79506400 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
Sep 14 22:34:40 pve2 kernel: RAX: ffffffffffffffda RBX: 000055d4425b22a0 RCX: 00007f5bf23224bb
Sep 14 22:34:40 pve2 kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
Sep 14 22:34:40 pve2 kernel: RBP: 0000000000000000 R08: 0000000000000000 R09: 00007f5bf221b280
Sep 14 22:34:40 pve2 kernel: R10: 00007f5bf221b550 R11: 0000000000000246 R12: 0000000000000000
Sep 14 22:34:40 pve2 kernel: R13: 00007ffe79506430 R14: 0000000000000000 R15: 000055d446f4bf60
Sep 14 22:34:40 pve2 kernel: Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 nfs lockd grace nfs_ssc fscache ebtable_filter ebtables ip_set ip6table_raw iptable_raw ip6table_filter ip6_tables sctp ip6_udp_tunnel udp_tunnel iptable_filter bpfilter bonding tls softdog nfnetlink_log nfnetlink intel_rapl_msr intel_rapl_common snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio edac_mce_amd snd_hda_codec_hdmi snd_hda_intel amdgpu snd_intel_dspcfg kvm_amd soundwire_intel iwlmvm soundwire_generic_allocation kvm soundwire_cadence irqbypass iommu_v2 snd_hda_codec gpu_sched crct10dif_pclmul mac80211 ghash_clmulni_intel drm_ttm_helper snd_hda_core libarc4 snd_hwdep aesni_intel soundwire_bus ttm crypto_simd cryptd snd_soc_core glue_helper snd_compress iwlwifi rapl ac97_bus drm_kms_helper snd_pcm_dmaengine cec snd_pcm eeepc_wmi snd_timer rc_core asus_wmi sparse_keymap i2c_algo_bit wmi_bmof efi_pstore pcspkr fb_sys_fops snd syscopyarea cfg80211 sysfillrect k10temp sysimgblt soundcore ccp mac_hid zfs(PO)
Sep 14 22:34:40 pve2 kernel: zunicode(PO) zzstd(O) zlua(O) zavl(PO) icp(PO) zcommon(PO) znvpair(PO) spl(O) vhost_net vhost vhost_iotlb tap ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi drm sunrpc ip_tables x_tables autofs4 btrfs blake2b_generic xor raid6_pq dm_thin_pool dm_persistent_data dm_bio_prison dm_bufio libcrc32c crc32_pclmul i2c_piix4 xhci_pci xhci_pci_renesas r8169 realtek ahci xhci_hcd libahci gpio_amdpt wmi video gpio_generic
Sep 14 22:34:40 pve2 kernel: ---[ end trace fb7b29bcd76f6c89 ]---
Sep 14 22:34:40 pve2 kernel: RIP: 0010:__memcpy+0x12/0x20
Sep 14 22:34:40 pve2 kernel: Code: cc cc cc cc cc cc cc cc 48 8b 05 c1 3a 70 01 c3 cc cc cc cc cc cc cc cc 0f 1f 44 00 00 48 89 f8 48 89 d1 48 c1 e9 03 83 e2 07 <f3> 48 a5 89 d1 f3 a4 c3 66 0f 1f 44 00 00 48 89 f8 48 89 d1 f3 a4
Sep 14 22:34:40 pve2 kernel: RSP: 0018:ffffa2fc816e3d90 EFLAGS: 00010246
Sep 14 22:34:40 pve2 kernel: RAX: ffff9337982f3080 RBX: ffffa2fc816e3e30 RCX: 00000000000002ce
Sep 14 22:34:40 pve2 kernel: RDX: 0000000000000000 RSI: ffffa2fc816e4000 RDI: ffff9337982f3250
Sep 14 22:34:40 pve2 kernel: RBP: ffffa2fc816e3da0 R08: 0000000000000000 R09: ffffa2fc8c4b0000
Sep 14 22:34:40 pve2 kernel: R10: 0000000000000004 R11: ffffa2fc80000000 R12: ffffa2fc816e3e30
Sep 14 22:34:40 pve2 kernel: R13: 0000000000000000 R14: ffffa2fc816e3eb0 R15: ffff9337982f3080
Sep 14 22:34:40 pve2 kernel: FS: 00007f5bf221b280(0000) GS:ffff933e3fd00000(0000) knlGS:0000000000000000
Sep 14 22:34:40 pve2 kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Sep 14 22:34:40 pve2 kernel: CR2: ffffa2fc816e4000 CR3: 000000011daec000 CR4: 00000000003506e0
Sep 14 22:34:40 pve2 kernel: BUG: stack guard page was hit at 0000000095a14b0f (stack is 0000000021e9b3a1..000000001a239e64)
Sep 14 22:34:40 pve2 kernel: kernel stack overflow (page fault): 0000 [#2] SMP NOPTI
Sep 14 22:34:40 pve2 kernel: CPU: 2 PID: 407 Comm: systemd-journal Tainted: P D O 5.11.22-4-pve #1
Sep 14 22:34:40 pve2 kernel: Hardware name: MicroElectronics B241/PRIME A320M-K, BIOS 9102 07/11/2018
Sep 14 22:34:40 pve2 kernel: RIP: 0010:__memcpy+0x12/0x20
Sep 14 22:34:40 pve2 kernel: Code: cc cc cc cc cc cc cc cc 48 8b 05 c1 3a 70 01 c3 cc cc cc cc cc cc cc cc 0f 1f 44 00 00 48 89 f8 48 89 d1 48 c1 e9 03 83 e2 07 <f3> 48 a5 89 d1 f3 a4 c3 66 0f 1f 44 00 00 48 89 f8 48 89 d1 f3 a4
Sep 14 22:34:40 pve2 kernel: RSP: 0018:ffffa2fc803bfd90 EFLAGS: 00010246
Sep 14 22:34:40 pve2 kernel: RAX: ffff93374d9b1840 RBX: ffffa2fc803bfe30 RCX: 00000000000002ce
Sep 14 22:34:40 pve2 kernel: RDX: 0000000000000000 RSI: ffffa2fc803c0000 RDI: ffff93374d9b1a10
Sep 14 22:34:40 pve2 kernel: RBP: ffffa2fc803bfda0 R08: 0000000000000000 R09: ffffa2fc8c3b0000
Sep 14 22:34:40 pve2 kernel: R10: 00000000000049d0 R11: 0000000000000000 R12: ffffa2fc803bfe30
Sep 14 22:34:40 pve2 kernel: R13: 0000000000000000 R14: ffffa2fc803bfeb0 R15: ffff93374d9b1840
Sep 14 22:34:40 pve2 kernel: FS: 00007fee8f401900(0000) GS:ffff933e3fc80000(0000) knlGS:0000000000000000
Sep 14 22:34:40 pve2 kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Sep 14 22:34:40 pve2 kernel: CR2: ffffa2fc803c0000 CR3: 0000000111344000 CR4: 00000000003506e0
Sep 14 22:34:40 pve2 kernel: Call Trace:
Sep 14 22:34:40 pve2 kernel: ? arch_dup_task_struct+0x1a/0x30
Sep 14 22:34:40 pve2 kernel: copy_process+0x2e6/0x1c10
Sep 14 22:34:40 pve2 kernel: kernel_clone+0x9d/0x3e0
Sep 14 22:34:40 pve2 kernel: __do_sys_clone+0x5d/0x80
Sep 14 22:34:40 pve2 kernel: __x64_sys_clone+0x25/0x30
Sep 14 22:34:40 pve2 kernel: do_syscall_64+0x38/0x90
Sep 14 22:34:40 pve2 kernel: entry_SYSCALL_64_after_hwframe+0x44/0xa9
Sep 14 22:34:40 pve2 kernel: RIP: 0033:0x7fee8fcc9de1
Sep 14 22:34:40 pve2 kernel: Code: 48 85 ff 74 3d 48 85 f6 74 38 48 83 ee 10 48 89 4e 08 48 89 3e 48 89 d7 4c 89 c2 4d 89 c8 4c 8b 54 24 08 b8 38 00 00 00 0f 05 <48> 85 c0 7c 13 74 01 c3 31 ed 58 5f ff d0 48 89 c7 b8 3c 00 00 00
Sep 14 22:34:40 pve2 kernel: RSP: 002b:00007ffe7f4ef6f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
Sep 14 22:34:40 pve2 kernel: RAX: ffffffffffffffda RBX: 00007fee8e400700 RCX: 00007fee8fcc9de1
Sep 14 22:34:40 pve2 kernel: RDX: 00007fee8e4009d0 RSI: 00007fee8e3ffdf0 RDI: 00000000003d0f00
Sep 14 22:34:40 pve2 kernel: RBP: 00007ffe7f4ef7b0 R08: 00007fee8e400700 R09: 00007fee8e400700
Sep 14 22:34:40 pve2 kernel: R10: 00007fee8e4009d0 R11: 0000000000000206 R12: 00007ffe7f4ef7ae
Sep 14 22:34:40 pve2 kernel: R13: 00007ffe7f4ef7af R14: 00007fee8e3ffe00 R15: 0000563aea560fc0
Sep 14 22:34:40 pve2 kernel: Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 nfs lockd grace nfs_ssc fscache ebtable_filter ebtables ip_set ip6table_raw iptable_raw ip6table_filter ip6_tables sctp ip6_udp_tunnel udp_tunnel iptable_filter bpfilter bonding tls softdog nfnetlink_log nfnetlink intel_rapl_msr intel_rapl_common snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio edac_mce_amd snd_hda_codec_hdmi snd_hda_intel amdgpu snd_intel_dspcfg kvm_amd soundwire_intel iwlmvm soundwire_generic_allocation kvm soundwire_cadence irqbypass iommu_v2 snd_hda_codec gpu_sched crct10dif_pclmul mac80211 ghash_clmulni_intel drm_ttm_helper snd_hda_core libarc4 snd_hwdep aesni_intel soundwire_bus ttm crypto_simd cryptd snd_soc_core glue_helper snd_compress iwlwifi rapl ac97_bus drm_kms_helper snd_pcm_dmaengine cec snd_pcm eeepc_wmi snd_timer rc_core asus_wmi sparse_keymap i2c_algo_bit wmi_bmof efi_pstore pcspkr fb_sys_fops snd syscopyarea cfg80211 sysfillrect k10temp sysimgblt soundcore ccp mac_hid zfs(PO)
Sep 14 22:34:40 pve2 kernel: zunicode(PO) zzstd(O) zlua(O) zavl(PO) icp(PO) zcommon(PO) znvpair(PO) spl(O) vhost_net vhost vhost_iotlb tap ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi drm sunrpc ip_tables x_tables autofs4 btrfs blake2b_generic xor raid6_pq dm_thin_pool dm_persistent_data dm_bio_prison dm_bufio libcrc32c crc32_pclmul i2c_piix4 xhci_pci xhci_pci_renesas r8169 realtek ahci xhci_hcd libahci gpio_amdpt wmi video gpio_generic
Sep 14 22:34:40 pve2 kernel: ---[ end trace fb7b29bcd76f6c8a ]---
Sep 14 22:34:40 pve2 kernel: RIP: 0010:__memcpy+0x12/0x20
Sep 14 22:34:40 pve2 kernel: Code: cc cc cc cc cc cc cc cc 48 8b 05 c1 3a 70 01 c3 cc cc cc cc cc cc cc cc 0f 1f 44 00 00 48 89 f8 48 89 d1 48 c1 e9 03 83 e2 07 <f3> 48 a5 89 d1 f3 a4 c3 66 0f 1f 44 00 00 48 89 f8 48 89 d1 f3 a4
Sep 14 22:34:40 pve2 kernel: RSP: 0018:ffffa2fc816e3d90 EFLAGS: 00010246
Sep 14 22:34:40 pve2 kernel: RAX: ffff9337982f3080 RBX: ffffa2fc816e3e30 RCX: 00000000000002ce
Sep 14 22:34:40 pve2 kernel: RDX: 0000000000000000 RSI: ffffa2fc816e4000 RDI: ffff9337982f3250
Sep 14 22:34:40 pve2 kernel: RBP: ffffa2fc816e3da0 R08: 0000000000000000 R09: ffffa2fc8c4b0000
Sep 14 22:34:40 pve2 kernel: R10: 0000000000000004 R11: ffffa2fc80000000 R12: ffffa2fc816e3e30
Sep 14 22:34:40 pve2 kernel: R13: 0000000000000000 R14: ffffa2fc816e3eb0 R15: ffff9337982f3080
Sep 14 22:34:40 pve2 kernel: FS: 00007fee8f401900(0000) GS:ffff933e3fc80000(0000) knlGS:0000000000000000
Sep 14 22:34:40 pve2 kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Sep 14 22:34:40 pve2 kernel: CR2: ffffa2fc803c0000 CR3: 0000000111344000 CR4: 00000000003506e0
Sep 14 22:34:40 pve2 systemd: systemd-journald.service: Scheduled restart job, restart counter is at 1.
Sep 14 22:34:40 pve2 systemd: Stopping Flush Journal to Persistent Storage...
Sep 14 22:34:40 pve2 systemd: systemd-journal-flush.service: Succeeded.
Sep 14 22:34:40 pve2 systemd: Stopped Flush Journal to Persistent Storage.
Sep 14 22:34:40 pve2 systemd: Stopped Journal Service.
Sep 14 22:34:40 pve2 systemd: Starting Journal Service...
Sep 14 22:34:40 pve2 systemd-journald[3564]: Journal started
Sep 14 22:34:40 pve2 systemd-journald[3564]: System Journal (/var/log/journal/ba99f72df67c4b88a4075dcc65a21d32) is 136.0M, max 4.0G, 3.8G free.
Sep 14 22:34:40 pve2 systemd[1]: pvestatd.service: Main process exited, code=killed, status=11/SEGV
Sep 14 22:34:40 pve2 systemd[1]: pvestatd.service: Failed with result 'signal'.
Sep 14 22:34:40 pve2 systemd[1]: pvestatd.service: Consumed 6.588s CPU time.
Sep 14 22:34:40 pve2 systemd[1]: systemd-journald.service: Main process exited, code=killed, status=11/SEGV
Sep 14 22:34:40 pve2 systemd[1]: systemd-journald.service: Failed with result 'signal'.
Sep 14 22:34:40 pve2 systemd[1]: Starting Flush Journal to Persistent Storage...
Sep 14 22:34:40 pve2 systemd: Started Journal Service.
Sep 14 22:34:40 pve2 systemd-journald[3564]: System Journal (/var/log/journal/ba99f72df67c4b88a4075dcc65a21d32) is 136.0M, max 4.0G, 3.8G free.
Sep 14 22:34:40 pve2 systemd[1]: Finished Flush Journal to Persistent Storage.
Sep 14 22:35:00 pve2 systemd[1]: Starting Proxmox VE replication runner...
Sep 14 22:35:01 pve2 systemd[1]: pvesr.service: Succeeded.
Sep 14 22:35:01 pve2 systemd[1]: Finished Proxmox VE replication runner.
-- Reboot --