BSOD IRQL_NOT_LESS_OR_EQUAL (0xA) — bucket AV_eaanticheat!unknown_function
PLATFORM: PC (Steam)
SUMMARY:
Deterministic BSOD while running Battlefield 6. Crash originates in EA AntiCheat
code and is byte-for-byte identical across 5 separate minidumps. No BF6 crashes
before late May 2026; began around Update 1.3.1.5 (May 26) / Season 3.
FREQUENCY:
Recurs in menus and in-match, from immediately to ~3-4 matches in. Only with BF6;
no other game or workload crashes this system.
CRASH SIGNATURE (identical every time):
- Bugcheck: 0xA IRQL_NOT_LESS_OR_EQUAL
- Args: P1=00007fffffff0000 P2=ff (IRQL) P3=read P4=nt!RtlpxVirtualUnwind+0xb6
- Chain: eaanticheat (allocated region, eaanticheat+0x49a2808) takes a #GP
(nt!KiGeneralProtectionFault) -> during exception dispatch, nt!RtlpxVirtualUnwind
reads a bad pointer (0x7fffffff0000) -> second fault -> bugcheck.
- FAILURE_BUCKET_ID: AV_eaanticheat!unknown_function
- FAILURE_ID_HASH: {d544cf09-4735-e698-77c3-5df5924e5448}
- IMAGE_NAME: eaanticheat.sys PROCESS_NAME: bf6.exe
SYSTEM:
- CPU: Intel Core i9-14900K (microcode 0x12B)
- OS: Windows 11 24H2, build 26100
- GPU: NVIDIA RTX 4090 — tested on 610.47 AND rolled back to 595.71, no change
- RAM: F5-6400J3239G32GX2-TZ5RS Board: MEG Z790 ACE MAX (MS-7D86) (0x00000609 - 0x85BE7EBE)
- WHEA event log: clean (no hardware errors)
RULED OUT (crash signature stayed identical through ALL of these):
- DDU + GPU driver rollback (610.47 -> 595.71)
- Clean EA AntiCheat reinstall + Steam file verify
- Removed all ring-0 monitoring drivers (WinRing0, NTIOLib/MSI, MsIo64, CPU-Z)
- Uninstalled Bitdefender
- Removed NVIDIA Broadcast remnants; overlay off
- Removed virtual-input/VR drivers (ViGEmBus, Virtual Desktop, Steam streaming)
- PCIe Link State Power Mgmt off; Kernel-mode HW Stack Protection off; Memory Integrity off
- Disabled Hyper-V / WSL / Virtual Machine Platform
- Hardware excluded: clean WHEA + identical failure hash (deterministic, not the
varied faults you'd see from bad RAM/CPU)
CONCLUSION:
Fault originates in EAAC and is independent of removable system software. Requesting
investigation. Full minidumps / !analyze -v available on request.
