------------[ cut here ]------------
[  141.792796] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  141.792921] WARNING: CPU: 1 PID: 2546 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x13f/0x1c0
[  141.794372] Modules linked in:
[  141.794545] CPU: 1 UID: 0 PID: 2546 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[  141.795022] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  141.795195] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  141.795452] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  141.796155] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 2b 44 87 00 48 c7 c1 c0 38 9d ba 4c 89 fa 48 c7 c7 20 39 9d ba 48 89 c6 e8 f2 dc 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
[  141.796862] RSP: 0000:ffff88810a5dfb68 EFLAGS: 00010282
[  141.797483] RAX: 0000000000000000 RBX: ffff88810a5dfc40 RCX: 1ffffffff76e4cf0
[  141.797915] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  141.798537] RBP: ffff88810a5dfb90 R08: 0000000000000000 R09: fffffbfff76e4cf0
[  141.798988] R10: 0000000000000003 R11: 0000000000038ec0 R12: ffff88810a5dfc18
[  141.799869] R13: ffff88810a40a000 R14: ffff88810a53f000 R15: ffff888103166880
[  141.800469] FS:  0000000000000000(0000) GS:ffff88819e772000(0000) knlGS:0000000000000000
[  141.801013] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  141.801526] CR2: 00007ffff7ffe000 CR3: 00000001538bc000 CR4: 00000000000006f0
[  141.801999] DR0: ffffffffbca52440 DR1: ffffffffbca52441 DR2: ffffffffbca52443
[  141.802787] DR3: ffffffffbca52445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  141.803214] Call Trace:
[  141.803495]  <TASK>
[  141.803652]  drm_test_framebuffer_free+0x1ab/0x610
[  141.803894]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  141.804439]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  141.804936]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  141.805494]  ? __drmm_add_action_or_reset+0x22/0x50
[  141.805754]  ? __schedule+0x10cc/0x2b60
[  141.805942]  ? __pfx_read_tsc+0x10/0x10
[  141.806727]  ? ktime_get_ts64+0x86/0x230
[  141.806896]  kunit_try_run_case+0x1a5/0x480
[  141.807066]  ? __pfx_kunit_try_run_case+0x10/0x10
[  141.807230]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  141.807392]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  141.807563]  ? __kthread_parkme+0x82/0x180
[  141.807724]  ? preempt_count_sub+0x50/0x80
[  141.807872]  ? __pfx_kunit_try_run_case+0x10/0x10
[  141.808105]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  141.808365]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  141.809012]  kthread+0x337/0x6f0
[  141.809405]  ? trace_preempt_on+0x20/0xc0
[  141.809652]  ? __pfx_kthread+0x10/0x10
[  141.809835]  ? _raw_spin_unlock_irq+0x47/0x80
[  141.810289]  ? calculate_sigpending+0x7b/0xa0
[  141.810520]  ? __pfx_kthread+0x10/0x10
[  141.810796]  ret_from_fork+0x116/0x1d0
[  141.810971]  ? __pfx_kthread+0x10/0x10
[  141.811324]  ret_from_fork_asm+0x1a/0x30
[  141.811597]  </TASK>
[  141.811710] ---[ end trace 0000000000000000 ]---