My file transfer locked up and I found this when i checked the log:

Jul 17 17:49:15 yetiTerra kernel: CPU: 3 UID: 1000 PID: 20244 Comm: smbd[10.0.0.164 Tainted: P D W O 6.12.24-Unraid #1

Jul 17 17:49:15 yetiTerra kernel: Tainted: [P]=PROPRIETARY_MODULE, [D]=DIE, [W]=WARN, [O]=OOT_MODULE

Jul 17 17:49:15 yetiTerra kernel: Hardware name: retsamarret 000-T9423-FBA001-3000-N/Default string, BIOS 5.19 06/17/2022

Jul 17 17:49:15 yetiTerra kernel: Call Trace:

Jul 17 17:49:15 yetiTerra kernel: <TASK>

Jul 17 17:49:15 yetiTerra kernel: dump_stack_lvl+0x47/0x70

Jul 17 17:49:15 yetiTerra kernel: check_preemption_disabled+0xb7/0xd0

Jul 17 17:49:15 yetiTerra kernel: __schedule+0x2d/0x760

Jul 17 17:49:15 yetiTerra kernel: ? _printk+0x58/0x80

Jul 17 17:49:15 yetiTerra kernel: do_task_dead+0x3e/0x40

Jul 17 17:49:15 yetiTerra kernel: make_task_dead+0xfc/0x110

Jul 17 17:49:15 yetiTerra kernel: rewind_stack_and_make_dead+0x16/0x20

Jul 17 17:49:15 yetiTerra kernel: RIP: 0033:0x15162567098e

Jul 17 17:49:15 yetiTerra kernel: Code: Unable to access opcode bytes at 0x151625670964.

Jul 17 17:49:15 yetiTerra kernel: RSP: 002b:00007ffe2116a7f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000012

Jul 17 17:49:15 yetiTerra kernel: RAX: ffffffffffffffda RBX: 0000151620caaa00 RCX: 000015162567098e

Jul 17 17:49:15 yetiTerra kernel: RDX: 0000000000100000 RSI: 000055a978453e80 RDI: 000000000000001e

Jul 17 17:49:15 yetiTerra kernel: RBP: 0000000486500000 R08: 0000000000000000 R09: 0000000000000000

Jul 17 17:49:15 yetiTerra kernel: R10: 0000000486500000 R11: 0000000000000246 R12: 0000000000100000

Jul 17 17:49:15 yetiTerra kernel: R13: 000055a978453e80 R14: 000000000000001e R15: 0000000486500000

Jul 17 17:49:15 yetiTerra kernel: </TASK>

Jul 17 17:49:15 yetiTerra kernel: BUG: scheduling while atomic: smbd[10.0.0.164/20244/0x00000000

Jul 17 17:49:15 yetiTerra kernel: Modules linked in: xt_conntrack xt_MASQUERADE xfrm_user xfrm_algo xt_addrtype tun nf_tables nfnetlink ip6table_nat iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 md_mod ntfs3 tcp_diag inet_diag zfs(PO) spl(O) ip6table_filter ip6_tables iptable_filter ip_tables x_tables efivarfs af_packet cfg80211 rfkill 8021q garp mrp bridge stp llc bonding tls igc led_class x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel i915 drm_buddy kvm ttm i2c_algo_bit drm_display_helper wmi_bmof drm_kms_helper processor_thermal_device_pci_legacy processor_thermal_device processor_thermal_wt_hint crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel sha512_ssse3 sha256_ssse3 sha1_ssse3 processor_thermal_rfim processor_thermal_rapl aesni_intel intel_rapl_common processor_thermal_wt_req crypto_simd processor_thermal_power_floor drm processor_thermal_mbox cryptd nvme intel_cstate int340x_thermal_zone i2c_i801 intel_gtt intel_soc_dts_iosf ahci i2c_smbus nvme_core agpgart mei_me libahci mei i2c_core

Jul 17 17:49:15 yetiTerra kernel: iosf_mbi thermal fan tpm_crb tpm_tis tpm_tis_core video tpm wmi libaescfb backlight ecdh_generic ecc button acpi_tad acpi_pad [last unloaded: led_class]

Jul 17 17:49:15 yetiTerra kernel: Preemption disabled at:

Jul 17 17:49:15 yetiTerra kernel: [<0000000000000000>] 0x0

Jul 17 17:49:15 yetiTerra kernel: CPU: 3 UID: 1000 PID: 20244 Comm: smbd[10.0.0.164 Tainted: P D W O 6.12.24-Unraid #1

Jul 17 17:49:15 yetiTerra kernel: Tainted: [P]=PROPRIETARY_MODULE, [D]=DIE, [W]=WARN, [O]=OOT_MODULE

Jul 17 17:49:15 yetiTerra kernel: Hardware name: retsamarret 000-T9423-FBA001-3000-N/Default string, BIOS 5.19 06/17/2022

Jul 17 17:49:15 yetiTerra kernel: Call Trace:

Jul 17 17:49:15 yetiTerra kernel: <TASK>

Jul 17 17:49:15 yetiTerra kernel: dump_stack_lvl+0x47/0x70

Jul 17 17:49:15 yetiTerra kernel: __schedule_bug+0x85/0xa0

Jul 17 17:49:15 yetiTerra kernel: __schedule+0x63/0x760

Jul 17 17:49:15 yetiTerra kernel: ? _printk+0x58/0x80

Jul 17 17:49:15 yetiTerra kernel: do_task_dead+0x3e/0x40

Jul 17 17:49:15 yetiTerra kernel: make_task_dead+0xfc/0x110

Jul 17 17:49:15 yetiTerra kernel: rewind_stack_and_make_dead+0x16/0x20

Jul 17 17:49:15 yetiTerra kernel: RIP: 0033:0x15162567098e

Jul 17 17:49:15 yetiTerra kernel: Code: Unable to access opcode bytes at 0x151625670964.

Jul 17 17:49:15 yetiTerra kernel: RSP: 002b:00007ffe2116a7f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000012

Jul 17 17:49:15 yetiTerra kernel: RAX: ffffffffffffffda RBX: 0000151620caaa00 RCX: 000015162567098e

Jul 17 17:49:15 yetiTerra kernel: RDX: 0000000000100000 RSI: 000055a978453e80 RDI: 000000000000001e

Jul 17 17:49:15 yetiTerra kernel: RBP: 0000000486500000 R08: 0000000000000000 R09: 0000000000000000

Jul 17 17:49:15 yetiTerra kernel: R10: 0000000486500000 R11: 0000000000000246 R12: 0000000000100000

Jul 17 17:49:15 yetiTerra kernel: R13: 000055a978453e80 R14: 000000000000001e R15: 0000000486500000

Jul 17 17:49:15 yetiTerra kernel: </TASK>

I ran Memtest for a day and a half over the weekend without failure. This is a Terramaster T9-423 with an Intel® Celeron® N5095.

The kernel will always be "tainted" due to the zfs module being loaded; that by itself is not a problem, try running memtest.

2 hours ago, JorgeB said:

The kernel will always be "tainted" due to the zfs module being loaded; that by itself is not a problem, try running memtest.

That's a relief, thank you. I have two sticks of RAM. I will remove one to see if that makes a difference.