igt@amdgpu/amd_prime@i915-to-amd - dmesg-warn - WARNING: CPU: 0 PID: \d+ at drivers/dma-buf/dma-buf.c:858 dma_buf_unmap_attachment.*
<4> [289.349386] WARNING: CPU: 0 PID: 5158 at drivers/dma-buf/dma-buf.c:858 dma_buf_unmap_attachment+0x8e/0xc0
<4> [289.349388] Modules linked in: snd_hda_intel i915 vgem snd_hda_codec_realtek snd_hda_codec_generic amdgpu mei_hdcp x86_pkg_temp_thermal coretemp crct10dif_pclmul crc32_pclmul btusb btrtl btbcm btintel bluetooth snd_hda_codec_hdmi ghash_clmulni_intel igb snd_intel_dspcfg e1000e snd_hda_codec ptp snd_hwdep ecdh_generic ecc snd_hda_core pps_core snd_pcm mei_me gpu_sched mei ttm prime_numbers intel_lpss_pci pinctrl_sunrisepoint pinctrl_intel [last unloaded: i915]
<4> [289.349408] CPU: 0 PID: 5158 Comm: amd_prime Tainted: G U 5.6.0-rc1-CI-CI_DRM_7919+ #1
<4> [289.349409] Hardware name: Intel Corporation NUC8i7HVK/NUC8i7HVB, BIOS HNKBLi70.86A.0047.2018.0718.1706 07/18/2018
<4> [289.349411] RIP: 0010:dma_buf_unmap_attachment+0x8e/0xc0
<4> [289.349413] Code: 40 20 e9 a5 f8 6f 00 8b 35 a3 28 06 01 85 f6 74 c3 48 8b b8 e8 00 00 00 be ff ff ff ff 48 83 c7 60 e8 36 c8 a1 ff 85 c0 75 aa <0f> 0b eb a6 0f 0b 5b 5d 41 5c c3 48 8b ba e8 00 00 00 be ff ff ff
<4> [289.349415] RSP: 0018:ffffc90000ebbcf0 EFLAGS: 00010246
<4> [289.349416] RAX: 0000000000000000 RBX: ffff88825d7cc440 RCX: 0000000000000001
<4> [289.349418] RDX: ffff888267f0a8c0 RSI: ffff888246f6bc50 RDI: ffff888267f0b150
<4> [289.349419] RBP: ffff88825d7c82f0 R08: 0000000000000000 R09: 0000000000000001
<4> [289.349420] R10: 00000000e27cb48c R11: 00000000feb14690 R12: 0000000000000000
<4> [289.349422] R13: ffff8882526853c0 R14: ffff88825f66bb08 R15: 00000000ffffffff
<4> [289.349423] FS: 00007f42c17c4500(0000) GS:ffff888276a00000(0000) knlGS:0000000000000000
<4> [289.349425] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [289.349426] CR2: 00005593fd495b98 CR3: 0000000264bd0004 CR4: 00000000003606f0
<4> [289.349427] Call Trace:
<4> [289.349474] amdgpu_ttm_tt_unpopulate+0x63/0xb0 [amdgpu]
<4> [289.349480] ttm_tt_destroy.part.14+0x44/0x50 [ttm]
<4> [289.349496] ttm_bo_cleanup_memtype_use+0x2d/0x80 [ttm]
<4> [289.349507] ttm_bo_put+0x1d6/0x600 [ttm]
<4> [289.349548] amdgpu_bo_unref+0x15/0x20 [amdgpu]
<4> [289.349585] amdgpu_gem_object_free+0x2e/0x50 [amdgpu]
<4> [289.349590] drm_gem_object_release_handle+0x6b/0x90
<4> [289.349592] ? drm_gem_object_handle_put_unlocked+0xb0/0xb0
<4> [289.349595] idr_for_each+0x49/0xd0
<4> [289.349601] drm_gem_release+0x17/0x20
<4> [289.349604] drm_file_free.part.11+0x204/0x270
<4> [289.349610] drm_release+0x66/0xe0
<4> [289.349615] __fput+0xbf/0x250
<4> [289.349621] task_work_run+0x82/0xb0
<4> [289.349642] exit_to_usermode_loop+0x98/0xa0
<4> [289.349645] do_syscall_64+0x1e5/0x220
<4> [289.349648] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [289.349650] RIP: 0033:0x7f42c0d27421
<4> [289.349652] Code: f7 d8 64 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 8b 05 ea cf 20 00 85 c0 75 16 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 3f f3 c3 0f 1f 44 00 00 53 89 fb 48 83 ec 10
<4> [289.349654] RSP: 002b:00007ffe82e8c138 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
<4> [289.349657] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007f42c0d27421
<4> [289.349658] RDX: 00007f42c0d10ca0 RSI: 0000000000000000 RDI: 0000000000000007
<4> [289.349660] RBP: 000055dea0c13a50 R08: 0000000000000020 R09: 0000000000000020
<4> [289.349662] R10: 00007f42c0d10ca0 R11: 0000000000000246 R12: 000055dea0c12ea0
<4> [289.349663] R13: 00007ffe82e8c300 R14: 0000000000000000 R15: 0000000000000000
<4> [289.349673] irq event stamp: 1897108
<4> [289.349676] hardirqs last enabled at (1897107): [<ffffffff817068af>] dma_resv_test_signaled_rcu+0x9f/0x510
<4> [289.349679] hardirqs last disabled at (1897108): [<ffffffff81001d80>] trace_hardirqs_off_thunk+0x1a/0x1c
<4> [289.349682] softirqs last enabled at (1896698): [<ffffffff81e00385>] __do_softirq+0x385/0x47f
<4> [289.349685] softirqs last disabled at (1896691): [<ffffffff810bab0a>] irq_exit+0xba/0xc0