------------[ cut here ]------------
[  140.212103] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  140.212254] WARNING: CPU: 1 PID: 2546 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x13f/0x1c0
[  140.213394] Modules linked in:
[  140.213879] CPU: 1 UID: 0 PID: 2546 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc5 #1 PREEMPT(voluntary) 
[  140.214919] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  140.215756] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  140.216421] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  140.217054] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 3b 3a 87 00 48 c7 c1 c0 38 dd 8e 4c 89 fa 48 c7 c7 20 39 dd 8e 48 89 c6 e8 02 ec 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
[  140.217539] RSP: 0000:ffff888101ca7b68 EFLAGS: 00010282
[  140.217838] RAX: 0000000000000000 RBX: ffff888101ca7c40 RCX: 1ffffffff1f64ce8
[  140.218048] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  140.218248] RBP: ffff888101ca7b90 R08: 0000000000000000 R09: fffffbfff1f64ce8
[  140.218448] R10: 0000000000000003 R11: 0000000000037fe0 R12: ffff888101ca7c18
[  140.218648] R13: ffff888102d0c800 R14: ffff888102da5000 R15: ffff88810a81c780
[  140.218863] FS:  0000000000000000(0000) GS:ffff8881ca372000(0000) knlGS:0000000000000000
[  140.220107] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  140.220384] CR2: 00007ffff7ffe000 CR3: 00000000438bc000 CR4: 00000000000006f0
[  140.221701] DR0: ffffffff90e52440 DR1: ffffffff90e52441 DR2: ffffffff90e52443
[  140.222300] DR3: ffffffff90e52445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  140.222522] Call Trace:
[  140.222636]  <TASK>
[  140.222753]  drm_test_framebuffer_free+0x1ab/0x610
[  140.222933]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  140.223109]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  140.224267]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  140.225727]  ? __drmm_add_action_or_reset+0x22/0x50
[  140.226259]  ? __schedule+0x10cc/0x2b60
[  140.226459]  ? __pfx_read_tsc+0x10/0x10
[  140.226679]  ? ktime_get_ts64+0x86/0x230
[  140.226921]  kunit_try_run_case+0x1a5/0x480
[  140.227329]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.227615]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  140.227915]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  140.228303]  ? __kthread_parkme+0x82/0x180
[  140.228506]  ? preempt_count_sub+0x50/0x80
[  140.228794]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.229000]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  140.229565]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  140.229856]  kthread+0x337/0x6f0
[  140.230144]  ? trace_preempt_on+0x20/0xc0
[  140.230382]  ? __pfx_kthread+0x10/0x10
[  140.230576]  ? _raw_spin_unlock_irq+0x47/0x80
[  140.230909]  ? calculate_sigpending+0x7b/0xa0
[  140.231299]  ? __pfx_kthread+0x10/0x10
[  140.231504]  ret_from_fork+0x116/0x1d0
[  140.231641]  ? __pfx_kthread+0x10/0x10
[  140.232028]  ret_from_fork_asm+0x1a/0x30
[  140.232257]  </TASK>
[  140.232470] ---[ end trace 0000000000000000 ]---