igt@i915_module_load@resize-bar - abort - BUG: kernel NULL pointer dereference, address: 00000000000000c4
<6> [383.298204] pcieport 0000:4b:00.0: bridge window [mem 0xb1000000-0xb11fffff]
<6> [383.298209] pcieport 0000:4b:00.0: bridge window [mem 0x3bbc00000000-0x3bbc17ffffff 64bit pref]
<6> [383.298216] pcieport 0000:4c:01.0: PCI bridge to [bus 4d-4e]
<6> [383.298223] pcieport 0000:4c:01.0: bridge window [mem 0xb1000000-0xb11fffff]
<6> [383.298229] pcieport 0000:4c:01.0: bridge window [mem 0x3bbc00000000-0x3bbc17ffffff 64bit pref]
<6> [383.298246] i915 0000:4d:00.0: [drm] BAR2 resized to 256M
<6> [383.314189] i915 0000:4d:00.0: [drm] Using a reduced BAR size of 256MiB. Consider enabling 'Resizable BAR' or similar, if available in the BIOS.
<7> [383.864811] i915 0000:4d:00.0: [drm:fw_domain_wait_ack_with_fallback [i915]] gt had to use fallback to clear ack, 0xffffffff (passes 11)
<3> [383.915133] i915 0000:4d:00.0: [drm] *ERROR* gt: MMIO unreliable (forcewake register returns 0xFFFFFFFF)!
<5> [383.924831] i915 0000:4d:00.0: [drm:add_taint_for_CI [i915]] CI tainted:0x9 by fw_domains_get_with_fallback+0x27e/0x330 [i915]
<7> [383.925246] i915 0000:4d:00.0: [drm:i915_gem_stolen_lmem_setup [i915]] Disabling stolen memory support due to OOB placement: lmem_size = 0x0000003fc0000000 vs dsm_base = 0xfffffffffff00000
<1> [383.925481] BUG: kernel NULL pointer dereference, address: 00000000000000c4
<1> [383.932445] #PF: supervisor write access in kernel mode
<1> [383.937674] #PF: error_code(0x0002) - not-present page
<6> [383.942815] PGD 0 P4D 0
<4> [383.945355] Oops: Oops: 0002 [#1] PREEMPT SMP NOPTI
<4> [383.950234] CPU: 24 PID: 2379 Comm: i915_module_loa Tainted: G U W 6.10.0-rc5-drmtip_1596-g6580bd2882ed+ #1
<4> [383.961182] Hardware name: Intel Corporation WHITLEY/WHITLEY, BIOS SE5C6200.86B.0020.P41.2109300305 09/30/2021
<4> [383.971173] RIP: 0010:intel_memory_regions_hw_probe+0x7b/0x200 [i915]
<4> [383.977766] Code: 01 00 00 66 41 83 fd 03 75 b6 be 03 00 00 00 48 89 ef e8 18 48 0e 00 48 3d 00 f0 ff ff 0f 87 ff 00 00 00 48 89 85 38 2d 00 00 <44> 89 a0 c4 00 00 00 48 89 84 dd 88 2f 00 00 48 83 c3 01 48 83 fb
<4> [383.996519] RSP: 0018:ffffc90005a8b9b8 EFLAGS: 00010207
<4> [384.001748] RAX: 0000000000000000 RBX: 0000000000000006 RCX: 0000000000000000
<4> [384.008881] RDX: 0000000000000001 RSI: ffffffff82434c4b RDI: 00000000ffffffff
<4> [384.016014] RBP: ffff8881658b8000 R08: 0000000000000000 R09: ffffc90005a8b668
<4> [384.023146] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000006
<4> [384.030279] R13: 0000000000000003 R14: ffff8881658bb188 R15: ffff88810d799000
<4> [384.037413] FS: 00007f9e6b1b2140(0000) GS:ffff889fff400000(0000) knlGS:0000000000000000
<4> [384.045500] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [384.051242] CR2: 00000000000000c4 CR3: 0000000207056004 CR4: 0000000000770ef0
<4> [384.058377] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
<4> [384.065509] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400