igt@prime_vgem@fence-wait@rcs0 - abort - INFO: task prime_vgem:.* blocked for more than 61 seconds

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_12789/re-dg2-15/igt@prime_vgem@fence-wait@rcs0.html#dmesg-warnings46

4> [145.764108] RDX: 0000000000000001 RSI: 0000000000001000 RDI: 0000000000000000
<4> [145.771223] RBP: 0000000000000000 R08: 0000000000000009 R09: 0000000000000000
<4> [145.778336] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000005
<4> [145.785451] R13: 0000000000000006 R14: 0000000000000001 R15: 00007ffcd3ba75d8
<4> [145.792586]  </TASK>
<3> [207.848936] INFO: task prime_vgem:1344 blocked for more than 61 seconds.
<3> [207.855681]       Tainted: G        W          6.2.0-CI_DRM_12789-g8589fd9227ca+ #1
<3> [207.863347] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
<6> [207.871180] task:prime_vgem      state:D stack:11728 pid:1344  ppid:1333   flags:0x00004000
<6> [207.879522] Call Trace:
<6> [207.881978]  <TASK>
<6> [207.884099]  __schedule+0x38b/0xc20
<6> [207.887600]  ? rcu_read_lock_held_common+0x9/0x50
<6> [207.892311]  schedule+0x5c/0xd0
<6> [207.895473]  schedule_preempt_disabled+0x13/0x30
<6> [207.900093]  __ww_mutex_lock.constprop.0+0x9bc/0x1680
<6> [207.905138]  ? drm_gem_shmem_mmap+0x74/0xf0 [drm_shmem_helper]
<6> [207.910979]  ? ww_mutex_lock+0x37/0x100
<6> [207.914821]  ww_mutex_lock+0x37/0x100
<6> [207.918497]  drm_gem_shmem_mmap+0x74/0xf0 [drm_shmem_helper]
<6> [207.924163]  drm_gem_prime_mmap+0x6e/0x1c0
<6> [207.928264]  dma_buf_mmap_internal+0x60/0xa0
<6> [207.932543]  mmap_region+0x252/0xc30
<6> [207.936137]  ? arch_get_unmapped_area_topdown+0x11b/0x1d0
<6> [207.941539]  do_mmap+0x359/0x600
<6> [207.944783]  vm_mmap_pgoff+0xa2/0x150
<6> [207.948458]  ksys_mmap_pgoff+0x166/0x1b0