igt@prime_mmap_kms@buffer-sharing - dmesg-warn - WARNING: .* at drivers/gpu/drm/i915/gem/i915_gem_clflush.c:\d+ i915_gem_clflush_object

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11331/shard-dg1-13/igt@prime_mmap_kms@buffer-sharing.html#dmesg-warnings260

<7> [163.399111] i915 0000:03:00.0: [drm:i915_fifo_underrun_reset_write [i915]] Re-arming FIFO underruns on pipe A
<4> [163.405091] ------------[ cut here ]------------
<4> [163.405115] WARNING: CPU: 0 PID: 1065 at drivers/gpu/drm/i915/gem/i915_gem_clflush.c:80 i915_gem_clflush_object+0x1e8/0x2a0 [i915]
<4> [163.405233] Modules linked in: btusb btrtl btbcm btintel bluetooth ecdh_generic ecc mei_hdcp i915 x86_pkg_temp_thermal snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio coretemp crct10dif_pclmul crc32_pclmul ttm ghash_clmulni_intel drm_buddy drm_dp_helper snd_hda_intel e1000e drm_kms_helper snd_intel_dspcfg atlantic syscopyarea snd_hda_codec sysfillrect ptp mei_me sysimgblt snd_hwdep fb_sys_fops prime_numbers pps_core snd_hda_core snd_pcm mei
<4> [163.405294] CPU: 0 PID: 1065 Comm: prime_mmap_kms Not tainted 5.17.0-rc6-CI-CI_DRM_11331+ #1
<4> [163.405298] Hardware name: Gigabyte Technology Co., Ltd. GB-Z390 Garuda/GB-Z390 Garuda-CF, BIOS IG1c 11/19/2019
<4> [163.405300] RIP: 0010:i915_gem_clflush_object+0x1e8/0x2a0 [i915]
<4> [163.405410] Code: 31 00 48 85 c0 74 0c 48 8b 78 08 48 89 de e8 4f b2 04 00 65 ff 0d 48 2c ce 5f 0f 85 89 fe ff ff e8 9c 96 cc e0 e9 7f fe ff ff <0f> 0b 31 ed e9 47 fe ff ff 66 83 bb f8 03 00 00 01 0f 84 39 fe ff
<4> [163.405412] RSP: 0018:ffffc90001e6fdb0 EFLAGS: 00010202
<4> [163.405416] RAX: 0000000000000001 RBX: ffff888120dc3100 RCX: 00000000ffffffff
<4> [163.405419] RDX: 0000000000000001 RSI: ffffffff822e1210 RDI: ffffffff8233ac17
<4> [163.405421] RBP: ffff888120dc3100 R08: ffff888130b35e70 R09: 00000000fffffffe
<4> [163.405423] R10: 0000000000000001 R11: 00000000dcb2a5ba R12: ffff8881132d8000
<4> [163.405425] R13: 0000000000000002 R14: ffffc90001e6fe88 R15: 0000000000000000
<4> [163.405427] FS:  00007f7568b1e500(0000) GS:ffff8884ad600000(0000) knlGS:0000000000000000
<4> [163.405429] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [163.405432] CR2: 00007f755b9af000 CR3: 0000000120160001 CR4: 00000000003706f0
<4> [163.405434] Call Trace:
<4> [163.405436]  <TASK>
<4> [163.405440]  flush_write_domain+0x5f/0x150 [i915]
<4> [163.405553]  i915_gem_object_set_to_gtt_domain+0x8a/0x260 [i915]
<4> [163.405665]  i915_gem_end_cpu_access+0x9b/0x2d0 [i915]
<4> [163.405785]  dma_buf_ioctl+0xac/0x130
<4> [163.405792]  __x64_sys_ioctl+0x6d/0xa0
<4> [163.405799]  do_syscall_64+0x3a/0xb0
<4> [163.405803]  entry_SYSCALL_64_after_hwframe+0x44/0xae
<4> [163.405806] RIP: 0033:0x7f7567f6e317
<4> [163.405809] Code: b3 66 90 48 8b 05 71 4b 2d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 41 4b 2d 00 f7 d8 64 89 01 48
<4> [163.405812] RSP: 002b:00007fff3e65aed8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
<4> [163.405816] RAX: ffffffffffffffda RBX: 00000000000001e0 RCX: 00007f7567f6e317
<4> [163.405818] RDX: 00007fff3e65af10 RSI: 0000000040086200 RDI: 0000000000000008
<4> [163.405820] RBP: 00007fff3e65af10 R08: 0000000000000008 R09: 0000000000000000
<4> [163.405822] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000040086200
<4> [163.405824] R13: 0000000000000008 R14: 00000000000001d6 R15: 0000000000000780