igt@core_hotunplug@unbind-rebind|igt@i915_module_load@reload - abort - BUG dentry (Tainted: G U): Poison overwritten

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_12768/fi-apl-guc/igt@core_hotunplug@unbind-rebind.html#dmesg-warnings31

<7> [261.934269] [IGT] core_hotunplug: closing health checked device instance
<3> [262.110145] =============================================================================
<3> [262.111249] BUG dentry (Tainted: G     U            ): Poison overwritten
<3> [262.111330] -----------------------------------------------------------------------------
<3> [262.111432] 0xffff88810908b920-0xffff88810908b920 @offset=6432. First byte 0xeb instead of 0x6b
<3> [262.111530] Allocated in __d_alloc+0x24/0x250 age=145231 cpu=3 pid=4188
<4> [262.111611]  kmem_cache_alloc_lru+0x294/0x2b0
<4> [262.111620]  __d_alloc+0x24/0x250
<4> [262.111626]  d_alloc_pseudo+0x9/0x20
<4> [262.111634]  alloc_file_pseudo+0x60/0x110
<4> [262.111642]  __shmem_file_setup.part.0+0x70/0x140
<4> [262.111650]  shmem_object_init+0x53/0x120 [i915]
<4> [262.112110]  __i915_gem_object_create_user_ext+0x116/0x2b0 [i915]
<4> [262.112552]  i915_gem_create_ioctl+0x48/0x90 [i915]
<4> [262.112998]  drm_ioctl_kernel+0xb6/0x150
<4> [262.113008]  drm_ioctl+0x21d/0x420
<4> [262.113015]  __x64_sys_ioctl+0x79/0xb0
<4> [262.113023]  do_syscall_64+0x3f/0x90
<4> [262.113031]  entry_SYSCALL_64_after_hwframe+0x72/0xdc
<3> [262.113041] Freed in __dentry_kill+0x11f/0x180 age=142048 cpu=2 pid=45
<4> [262.113124]  __fput+0xec/0x260
<4> [262.113135]  delayed_fput+0x1e/0x30
<4> [262.113142]  process_one_work+0x253/0x570
<4> [262.113151]  worker_thread+0x4f/0x3a0
<4> [262.113158]  kthread+0xf5/0x120
<4> [262.113165]  ret_from_fork+0x2c/0x50
<3> [262.113173] Slab 0xffffea0004242280 objects=20 used=4 fp=0xffff88810908bb20 flags=0x8000000000010200(slab|head|zone=2)
<3> [262.113290] Object 0xffff88810908b7f0 @offset=6128 fp=0xffff88810908bb20
<3> [262.113378] Redzone  00000000: bb bb bb bb bb bb bb bb