------------[ cut here ]------------
[  185.151640] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  185.151894] WARNING: drivers/gpu/drm/drm_framebuffer.c:832 at drm_framebuffer_free+0x13f/0x1c0, CPU#1: kunit_try_catch/2654
[  185.153557] Modules linked in:
[  185.153718] CPU: 1 UID: 0 PID: 2654 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc5-next-20250708 #1 PREEMPT(voluntary) 
[  185.155222] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  185.155960] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  185.156336] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  185.156523] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 bb fc 88 00 48 c7 c1 e0 de 5f 9f 4c 89 fa 48 c7 c7 40 df 5f 9f 48 89 c6 e8 e2 d2 79 fe 90 <0f> 0b 90 90 e9 1c ff ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 ea
[  185.156991] RSP: 0000:ffff888104f57b68 EFLAGS: 00010282
[  185.157169] RAX: 0000000000000000 RBX: ffff888104f57c40 RCX: 1ffffffff4064ad4
[  185.157378] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  185.157687] RBP: ffff888104f57b90 R08: 0000000000000000 R09: fffffbfff4064ad4
[  185.157975] R10: 0000000000000003 R11: 0000000000039cb8 R12: ffff888104f57c18
[  185.158379] R13: ffff88810541d800 R14: ffff8881025f2000 R15: ffff888102c8fe00
[  185.158673] FS:  0000000000000000(0000) GS:ffff8881b3322000(0000) knlGS:0000000000000000
[  185.159098] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  185.159365] CR2: 00007ffff7ffd000 CR3: 0000000175ebc000 CR4: 00000000000006f0
[  185.159711] DR0: ffffffffa16a44c0 DR1: ffffffffa16a44c1 DR2: ffffffffa16a44c3
[  185.159942] DR3: ffffffffa16a44c5 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  185.160169] Call Trace:
[  185.160449]  <TASK>
[  185.160701]  drm_test_framebuffer_free+0x1ab/0x610
[  185.160950]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  185.161317]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  185.161594]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  185.161908]  ? __drmm_add_action_or_reset+0x22/0x50
[  185.162169]  ? __schedule+0x10cc/0x2b60
[  185.162391]  ? __pfx_read_tsc+0x10/0x10
[  185.162591]  ? ktime_get_ts64+0x86/0x230
[  185.162913]  kunit_try_run_case+0x1a5/0x480
[  185.163215]  ? __pfx_kunit_try_run_case+0x10/0x10
[  185.163412]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  185.163634]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  185.163980]  ? __kthread_parkme+0x82/0x180
[  185.164227]  ? preempt_count_sub+0x50/0x80
[  185.164600]  ? __pfx_kunit_try_run_case+0x10/0x10
[  185.164786]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  185.165059]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  185.165364]  kthread+0x337/0x6f0
[  185.165560]  ? trace_preempt_on+0x20/0xc0
[  185.165863]  ? __pfx_kthread+0x10/0x10
[  185.166092]  ? _raw_spin_unlock_irq+0x47/0x80
[  185.166318]  ? calculate_sigpending+0x7b/0xa0
[  185.166524]  ? __pfx_kthread+0x10/0x10
[  185.166653]  ret_from_fork+0x116/0x1d0
[  185.166843]  ? __pfx_kthread+0x10/0x10
[  185.167054]  ret_from_fork_asm+0x1a/0x30
[  185.167432]  </TASK>
[  185.167551] ---[ end trace 0000000000000000 ]---