igt@i915_selftest@mock_buddy - incomplete - i915_buddy_alloc.*

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7984/shard-skl3/igt@i915_selftest@mock_buddy.html#dmesg-warnings2782

<4> [308.272048] Call Trace:
<4> [308.272697]  ? split_block+0x8c/0x200 [i915]
<4> [308.273307]  ? split_block+0x8c/0x200 [i915]
<4> [308.273441]  ? stack_trace_save+0x46/0x70
<4> [308.273471]  ? set_track+0x3e/0xc0
<4> [308.273504]  ? _raw_spin_unlock+0x12/0x40
<4> [308.273526]  ? ___slab_alloc.constprop.95+0x88f/0x970
<4> [308.273950]  ? split_block+0x8c/0x200 [i915]
<4> [308.273990]  ? find_held_lock+0x2d/0x90
<4> [308.274402]  ? split_block+0x50/0x200 [i915]
<4> [308.274494]  ? __slab_alloc.isra.89.constprop.94+0x3d/0x70
<4> [308.274512]  ? __slab_alloc.isra.89.constprop.94+0x3d/0x70
<4> [308.274543]  ? kmem_cache_alloc+0x25f/0x2c0
<4> [308.274939]  ? split_block+0x50/0x200 [i915]
<4> [308.275341]  ? i915_buddy_alloc+0x8c/0x130 [i915]
<4> [308.275845]  ? igt_buddy_alloc_smoke+0x106/0x280 [i915]
<4> [308.276326]  ? __i915_subtests+0xb8/0x210 [i915]
<4> [308.276893]  ? i915_perf_selftests+0x60/0x60 [i915]
<4> [308.277306]  ? __i915_nop_setup+0x10/0x10 [i915]
<4> [308.278430]  ? __run_selftests+0x134/0x170 [i915]
<4> [308.278787]  ? 0xffffffffa0602000
<4> [308.279362]  ? i915_mock_selftests+0x27/0x50 [i915]
<4> [308.280146]  ? i915_init+0x12/0x7c [i915]
<4> [308.280180]  ? 0xffffffffa0602000
<4> [308.280209]  ? do_one_initcall+0x58/0x300
<4> [308.280252]  ? rcu_read_lock_sched_held+0x4d/0x80
<4> [308.280290]  ? kmem_cache_alloc_trace+0x2a6/0x2d0
<4> [308.280711]  ? do_init_module+0x56/0x1f2
<4> [308.280754]  ? load_module+0x233d/0x2a30
<4> [308.280962]  ? __do_sys_finit_module+0xe9/0x110
<4> [308.280987]  ? __do_sys_finit_module+0xe9/0x110
<4> [308.281127]  ? do_syscall_64+0x4f/0x220
<4> [308.281166]  ? entry_SYSCALL_64_after_hwframe+0x49/0xbe