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[  140.035554] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  140.035752] WARNING: CPU: 0 PID: 2547 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x13f/0x1c0
[  140.037005] Modules linked in:
[  140.037386] CPU: 0 UID: 0 PID: 2547 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[  140.038080] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  140.038483] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  140.039063] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  140.039421] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 cb 3e 87 00 48 c7 c1 40 29 dd 8a 4c 89 fa 48 c7 c7 a0 29 dd 8a 48 89 c6 e8 a2 e1 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
[  140.040393] RSP: 0000:ffff88810a4c7b68 EFLAGS: 00010282
[  140.040618] RAX: 0000000000000000 RBX: ffff88810a4c7c40 RCX: 1ffffffff1764c80
[  140.041486] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  140.042347] RBP: ffff88810a4c7b90 R08: 0000000000000000 R09: fffffbfff1764c80
[  140.042879] R10: 0000000000000003 R11: 0000000000037a38 R12: ffff88810a4c7c18
[  140.043092] R13: ffff88810a648800 R14: ffff88810a4f6000 R15: ffff888102eb8400
[  140.043295] FS:  0000000000000000(0000) GS:ffff8881ce274000(0000) knlGS:0000000000000000
[  140.043547] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  140.044172] CR2: 00007ffff7ffe000 CR3: 00000001356bc000 CR4: 00000000000006f0
[  140.044709] DR0: ffffffff8ce50440 DR1: ffffffff8ce50441 DR2: ffffffff8ce50443
[  140.045012] DR3: ffffffff8ce50445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  140.045313] Call Trace:
[  140.045455]  <TASK>
[  140.045582]  drm_test_framebuffer_free+0x1ab/0x610
[  140.046202]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  140.046863]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  140.047107]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  140.047382]  ? __drmm_add_action_or_reset+0x22/0x50
[  140.047926]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  140.048187]  kunit_try_run_case+0x1a5/0x480
[  140.048542]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.048967]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  140.049295]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  140.049706]  ? __kthread_parkme+0x82/0x180
[  140.050151]  ? preempt_count_sub+0x50/0x80
[  140.050372]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.050617]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  140.051116]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  140.051390]  kthread+0x337/0x6f0
[  140.051528]  ? trace_preempt_on+0x20/0xc0
[  140.051923]  ? __pfx_kthread+0x10/0x10
[  140.052101]  ? _raw_spin_unlock_irq+0x47/0x80
[  140.052296]  ? calculate_sigpending+0x7b/0xa0
[  140.052500]  ? __pfx_kthread+0x10/0x10
[  140.052666]  ret_from_fork+0x116/0x1d0
[  140.052911]  ? __pfx_kthread+0x10/0x10
[  140.053163]  ret_from_fork_asm+0x1a/0x30
[  140.053365]  </TASK>
[  140.053456] ---[ end trace 0000000000000000 ]---