------------[ cut here ]------------
[  192.928325] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  192.928559] WARNING: drivers/gpu/drm/drm_framebuffer.c:833 at drm_framebuffer_free+0x13f/0x1c0, CPU#0: kunit_try_catch/2713
[  192.929668] Modules linked in:
[  192.929821] CPU: 0 UID: 0 PID: 2713 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc6-next-20250717 #1 PREEMPT(voluntary) 
[  192.930235] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  192.930853] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  192.931158] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  192.931618] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 0b fe 88 00 48 c7 c1 00 14 00 96 4c 89 fa 48 c7 c7 60 14 00 96 48 89 c6 e8 e2 ed 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
[  192.932433] RSP: 0000:ffff888105b8fb68 EFLAGS: 00010282
[  192.932694] RAX: 0000000000000000 RBX: ffff888105b8fc40 RCX: 1ffffffff2da4aac
[  192.932944] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  192.933412] RBP: ffff888105b8fb90 R08: 0000000000000000 R09: fffffbfff2da4aac
[  192.933799] R10: 0000000000000003 R11: 0000000000039b08 R12: ffff888105b8fc18
[  192.934062] R13: ffff88810538c800 R14: ffff888105952000 R15: ffff888103d01d80
[  192.934618] FS:  0000000000000000(0000) GS:ffff8881c3013000(0000) knlGS:0000000000000000
[  192.934966] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  192.935269] CR2: 00007ffff7ffe000 CR3: 0000000156ebc000 CR4: 00000000000006f0
[  192.935606] DR0: ffffffff980b3540 DR1: ffffffff980b3541 DR2: ffffffff980b3543
[  192.936186] DR3: ffffffff980b3545 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  192.936748] Call Trace:
[  192.936884]  <TASK>
[  192.937004]  drm_test_framebuffer_free+0x1ab/0x610
[  192.937260]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  192.937653]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  192.937907]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  192.938177]  ? __drmm_add_action_or_reset+0x22/0x50
[  192.938460]  ? __schedule+0x10c6/0x2b60
[  192.938869]  ? __pfx_read_tsc+0x10/0x10
[  192.939048]  ? ktime_get_ts64+0x86/0x230
[  192.939437]  kunit_try_run_case+0x1a5/0x480
[  192.939671]  ? __pfx_kunit_try_run_case+0x10/0x10
[  192.940023]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  192.940254]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  192.940647]  ? __kthread_parkme+0x82/0x180
[  192.940875]  ? preempt_count_sub+0x50/0x80
[  192.941056]  ? __pfx_kunit_try_run_case+0x10/0x10
[  192.941412]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  192.941658]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  192.941892]  kthread+0x337/0x6f0
[  192.942062]  ? trace_preempt_on+0x20/0xc0
[  192.942292]  ? __pfx_kthread+0x10/0x10
[  192.942472]  ? _raw_spin_unlock_irq+0x47/0x80
[  192.942767]  ? calculate_sigpending+0x7b/0xa0
[  192.943216]  ? __pfx_kthread+0x10/0x10
[  192.943509]  ret_from_fork+0x116/0x1d0
[  192.943696]  ? __pfx_kthread+0x10/0x10
[  192.943905]  ret_from_fork_asm+0x1a/0x30
[  192.944138]  </TASK>
[  192.944224] ---[ end trace 0000000000000000 ]---