------------[ cut here ]------------
[  177.371935] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  177.372068] WARNING: drivers/gpu/drm/drm_framebuffer.c:832 at drm_framebuffer_free+0x13f/0x1c0, CPU#0: kunit_try_catch/2579
[  177.374985] Modules linked in:
[  177.375362] CPU: 0 UID: 0 PID: 2579 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc4-next-20250703 #1 PREEMPT(voluntary) 
[  177.376603] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  177.377021] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  177.377897] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  177.378800] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 0b 0a 89 00 48 c7 c1 00 3b bf b7 4c 89 fa 48 c7 c7 60 3b bf b7 48 89 c6 e8 42 c7 7a fe 90 <0f> 0b 90 90 e9 1c ff ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 ea
[  177.379887] RSP: 0000:ffff88810de0fb68 EFLAGS: 00010282
[  177.380178] RAX: 0000000000000000 RBX: ffff88810de0fc40 RCX: 1ffffffff7124ad4
[  177.380731] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  177.381216] RBP: ffff88810de0fb90 R08: 0000000000000000 R09: fffffbfff7124ad4
[  177.381581] R10: 0000000000000003 R11: 0000000000038098 R12: ffff88810de0fc18
[  177.381882] R13: ffff88810dfec000 R14: ffff88810dfd7000 R15: ffff888104fb7280
[  177.382384] FS:  0000000000000000(0000) GS:ffff8881a142d000(0000) knlGS:0000000000000000
[  177.382768] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  177.383028] CR2: ffffffffffffffff CR3: 00000000776bc000 CR4: 00000000000006f0
[  177.383445] DR0: ffffffffb9c99480 DR1: ffffffffb9c99481 DR2: ffffffffb9c99482
[  177.383871] DR3: ffffffffb9c99483 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  177.384171] Call Trace:
[  177.384516]  <TASK>
[  177.384621]  drm_test_framebuffer_free+0x1ab/0x610
[  177.384865]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  177.385156]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  177.385734]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  177.386003]  ? __drmm_add_action_or_reset+0x22/0x50
[  177.386427]  ? __schedule+0x10cc/0x2b60
[  177.386637]  ? __pfx_read_tsc+0x10/0x10
[  177.386811]  ? ktime_get_ts64+0x86/0x230
[  177.387008]  kunit_try_run_case+0x1a5/0x480
[  177.387203]  ? __pfx_kunit_try_run_case+0x10/0x10
[  177.387535]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  177.387730]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  177.387995]  ? __kthread_parkme+0x82/0x180
[  177.388139]  ? preempt_count_sub+0x50/0x80
[  177.388441]  ? __pfx_kunit_try_run_case+0x10/0x10
[  177.388725]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  177.388921]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  177.389314]  kthread+0x337/0x6f0
[  177.389496]  ? trace_preempt_on+0x20/0xc0
[  177.389694]  ? __pfx_kthread+0x10/0x10
[  177.389828]  ? _raw_spin_unlock_irq+0x47/0x80
[  177.390068]  ? calculate_sigpending+0x7b/0xa0
[  177.390461]  ? __pfx_kthread+0x10/0x10
[  177.390633]  ret_from_fork+0x116/0x1d0
[  177.390849]  ? __pfx_kthread+0x10/0x10
[  177.391025]  ret_from_fork_asm+0x1a/0x30
[  177.391307]  </TASK>
[  177.391522] ---[ end trace 0000000000000000 ]---