------------[ cut here ]------------
[  193.784661] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  193.784792] WARNING: drivers/gpu/drm/drm_framebuffer.c:832 at drm_framebuffer_free+0x13f/0x1c0, CPU#0: kunit_try_catch/2713
[  193.787827] Modules linked in:
[  193.788093] CPU: 0 UID: 0 PID: 2713 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc6-next-20250716 #1 PREEMPT(voluntary) 
[  193.789089] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  193.789631] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  193.790014] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  193.790604] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 1b 08 89 00 48 c7 c1 80 13 80 b5 4c 89 fa 48 c7 c7 e0 13 80 b5 48 89 c6 e8 12 d5 77 fe 90 <0f> 0b 90 90 e9 1c ff ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 ea
[  193.791825] RSP: 0000:ffff88810b117b68 EFLAGS: 00010282
[  193.792481] RAX: 0000000000000000 RBX: ffff88810b117c40 RCX: 1ffffffff6ca4aac
[  193.793103] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  193.793636] RBP: ffff88810b117b90 R08: 0000000000000000 R09: fffffbfff6ca4aac
[  193.793846] R10: 0000000000000003 R11: 000000000003a7e8 R12: ffff88810b117c18
[  193.794544] R13: ffff88810b0fd800 R14: ffff88810b20e000 R15: ffff88810de27780
[  193.795241] FS:  0000000000000000(0000) GS:ffff8881a3813000(0000) knlGS:0000000000000000
[  193.795652] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  193.795836] CR2: 00007ffff7ffe000 CR3: 00000000476bc000 CR4: 00000000000006f0
[  193.796602] DR0: ffffffffb78b3540 DR1: ffffffffb78b3541 DR2: ffffffffb78b3543
[  193.797385] DR3: ffffffffb78b3545 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  193.798118] Call Trace:
[  193.798533]  <TASK>
[  193.798678]  drm_test_framebuffer_free+0x1ab/0x610
[  193.798939]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  193.799693]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  193.800333]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  193.800698]  ? __drmm_add_action_or_reset+0x22/0x50
[  193.800872]  ? __schedule+0x10c6/0x2b60
[  193.801144]  ? __pfx_read_tsc+0x10/0x10
[  193.801541]  ? ktime_get_ts64+0x86/0x230
[  193.801777]  kunit_try_run_case+0x1a5/0x480
[  193.802089]  ? __pfx_kunit_try_run_case+0x10/0x10
[  193.802310]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  193.802467]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  193.802629]  ? __kthread_parkme+0x82/0x180
[  193.802769]  ? preempt_count_sub+0x50/0x80
[  193.802927]  ? __pfx_kunit_try_run_case+0x10/0x10
[  193.803126]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  193.803547]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  193.804019]  kthread+0x337/0x6f0
[  193.804304]  ? trace_preempt_on+0x20/0xc0
[  193.804487]  ? __pfx_kthread+0x10/0x10
[  193.804669]  ? _raw_spin_unlock_irq+0x47/0x80
[  193.804874]  ? calculate_sigpending+0x7b/0xa0
[  193.805230]  ? __pfx_kthread+0x10/0x10
[  193.805569]  ret_from_fork+0x116/0x1d0
[  193.805781]  ? __pfx_kthread+0x10/0x10
[  193.806084]  ret_from_fork_asm+0x1a/0x30
[  193.806252]  </TASK>
[  193.806339] ---[ end trace 0000000000000000 ]---