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[  143.580792] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  143.580934] WARNING: CPU: 0 PID: 2545 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x13f/0x1c0
[  143.581907] Modules linked in:
[  143.582075] CPU: 0 UID: 0 PID: 2545 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc5 #1 PREEMPT(voluntary) 
[  143.582693] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  143.583385] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  143.585387] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  143.585856] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 2b 44 87 00 48 c7 c1 40 38 9d 8d 4c 89 fa 48 c7 c7 a0 38 9d 8d 48 89 c6 e8 b2 de 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
[  143.587620] RSP: 0000:ffff888109587b68 EFLAGS: 00010282
[  143.587827] RAX: 0000000000000000 RBX: ffff888109587c40 RCX: 1ffffffff1ce4ce8
[  143.588297] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  143.588905] RBP: ffff888109587b90 R08: 0000000000000000 R09: fffffbfff1ce4ce8
[  143.589765] R10: 0000000000000003 R11: 0000000000037470 R12: ffff888109587c18
[  143.590399] R13: ffff888109590800 R14: ffff8881095e9000 R15: ffff888102ea4f80
[  143.590794] FS:  0000000000000000(0000) GS:ffff8881cb672000(0000) knlGS:0000000000000000
[  143.591620] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  143.592224] CR2: 00007ffff7ffe000 CR3: 00000001214bc000 CR4: 00000000000006f0
[  143.592705] DR0: ffffffff8fa52440 DR1: ffffffff8fa52441 DR2: ffffffff8fa52443
[  143.592919] DR3: ffffffff8fa52445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  143.593255] Call Trace:
[  143.593524]  <TASK>
[  143.593752]  drm_test_framebuffer_free+0x1ab/0x610
[  143.594388]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  143.594942]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  143.595595]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  143.596160]  ? __drmm_add_action_or_reset+0x22/0x50
[  143.596627]  ? __schedule+0x10cc/0x2b60
[  143.596882]  ? __pfx_read_tsc+0x10/0x10
[  143.597094]  ? ktime_get_ts64+0x86/0x230
[  143.597542]  kunit_try_run_case+0x1a5/0x480
[  143.597997]  ? __pfx_kunit_try_run_case+0x10/0x10
[  143.598581]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  143.598903]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  143.599505]  ? __kthread_parkme+0x82/0x180
[  143.600014]  ? preempt_count_sub+0x50/0x80
[  143.600446]  ? __pfx_kunit_try_run_case+0x10/0x10
[  143.600635]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  143.600833]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  143.601370]  kthread+0x337/0x6f0
[  143.601666]  ? trace_preempt_on+0x20/0xc0
[  143.601849]  ? __pfx_kthread+0x10/0x10
[  143.601984]  ? _raw_spin_unlock_irq+0x47/0x80
[  143.602135]  ? calculate_sigpending+0x7b/0xa0
[  143.602302]  ? __pfx_kthread+0x10/0x10
[  143.602659]  ret_from_fork+0x116/0x1d0
[  143.603230]  ? __pfx_kthread+0x10/0x10
[  143.603800]  ret_from_fork_asm+0x1a/0x30
[  143.604254]  </TASK>
[  143.604551] ---[ end trace 0000000000000000 ]---