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[  140.470364] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  140.470495] WARNING: CPU: 0 PID: 2545 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x13f/0x1c0
[  140.471606] Modules linked in:
[  140.471773] CPU: 0 UID: 0 PID: 2545 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc5 #1 PREEMPT(voluntary) 
[  140.473179] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  140.473934] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  140.474527] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  140.474716] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 3b 3a 87 00 48 c7 c1 c0 38 1d b2 4c 89 fa 48 c7 c7 20 39 1d b2 48 89 c6 e8 c2 eb 7e fe 90 <0f> 0b 90 90 e9 1c ff ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 ea
[  140.475790] RSP: 0000:ffff88810c75fb68 EFLAGS: 00010282
[  140.476529] RAX: 0000000000000000 RBX: ffff88810c75fc40 RCX: 1ffffffff65e4ce8
[  140.477356] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  140.477929] RBP: ffff88810c75fb90 R08: 0000000000000000 R09: fffffbfff65e4ce8
[  140.478163] R10: 0000000000000003 R11: 0000000000037a18 R12: ffff88810c75fc18
[  140.478395] R13: ffff88810c2f2800 R14: ffff88810c4ef000 R15: ffff88810c455380
[  140.478737] FS:  0000000000000000(0000) GS:ffff8881a6e72000(0000) knlGS:0000000000000000
[  140.479358] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  140.479711] CR2: 00007ffff7ffe000 CR3: 000000002f2bc000 CR4: 00000000000006f0
[  140.480095] DR0: ffffffffb4252440 DR1: ffffffffb4252441 DR2: ffffffffb4252443
[  140.480701] DR3: ffffffffb4252445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  140.481013] Call Trace:
[  140.481194]  <TASK>
[  140.481356]  drm_test_framebuffer_free+0x1ab/0x610
[  140.481758]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  140.482076]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  140.482406]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  140.482678]  ? __drmm_add_action_or_reset+0x22/0x50
[  140.482970]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  140.483415]  kunit_try_run_case+0x1a5/0x480
[  140.483627]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.484161]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  140.484607]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  140.485044]  ? __kthread_parkme+0x82/0x180
[  140.485428]  ? preempt_count_sub+0x50/0x80
[  140.485767]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.486170]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  140.486413]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  140.486679]  kthread+0x337/0x6f0
[  140.487137]  ? trace_preempt_on+0x20/0xc0
[  140.487587]  ? __pfx_kthread+0x10/0x10
[  140.487922]  ? _raw_spin_unlock_irq+0x47/0x80
[  140.488332]  ? calculate_sigpending+0x7b/0xa0
[  140.488648]  ? __pfx_kthread+0x10/0x10
[  140.489182]  ret_from_fork+0x116/0x1d0
[  140.489372]  ? __pfx_kthread+0x10/0x10
[  140.489546]  ret_from_fork_asm+0x1a/0x30
[  140.489737]  </TASK>
[  140.490283] ---[ end trace 0000000000000000 ]---