------------[ cut here ]------------
[  191.735377] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  191.735482] WARNING: drivers/gpu/drm/drm_framebuffer.c:832 at drm_framebuffer_free+0x13f/0x1c0, CPU#0: kunit_try_catch/2691
[  191.736397] Modules linked in:
[  191.736669] CPU: 0 UID: 0 PID: 2691 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc6-next-20250714 #1 PREEMPT(voluntary) 
[  191.737123] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  191.737453] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  191.738185] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  191.738482] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 7b 01 89 00 48 c7 c1 c0 e5 ff 94 4c 89 fa 48 c7 c7 20 e6 ff 94 48 89 c6 e8 92 0b 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
[  191.739738] RSP: 0000:ffff88810775fb68 EFLAGS: 00010282
[  191.740155] RAX: 0000000000000000 RBX: ffff88810775fc40 RCX: 1ffffffff2ba4bc0
[  191.740537] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  191.740817] RBP: ffff88810775fb90 R08: 0000000000000000 R09: fffffbfff2ba4bc0
[  191.741399] R10: 0000000000000003 R11: 000000000003c338 R12: ffff88810775fc18
[  191.742000] R13: ffff8881071ba800 R14: ffff88810706d000 R15: ffff88810f6cdf80
[  191.742411] FS:  0000000000000000(0000) GS:ffff8881bd61a000(0000) knlGS:0000000000000000
[  191.743153] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  191.743581] CR2: 00007ffff7ffe000 CR3: 0000000160ebc000 CR4: 00000000000006f0
[  191.743879] DR0: ffffffff970ac500 DR1: ffffffff970ac501 DR2: ffffffff970ac503
[  191.744557] DR3: ffffffff970ac505 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  191.744854] Call Trace:
[  191.745227]  <TASK>
[  191.745416]  drm_test_framebuffer_free+0x1ab/0x610
[  191.745806]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  191.746190]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  191.746438]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  191.746886]  ? __drmm_add_action_or_reset+0x22/0x50
[  191.747358]  ? __schedule+0x10cc/0x2b60
[  191.747753]  ? __pfx_read_tsc+0x10/0x10
[  191.748134]  ? ktime_get_ts64+0x86/0x230
[  191.748339]  kunit_try_run_case+0x1a5/0x480
[  191.748546]  ? __pfx_kunit_try_run_case+0x10/0x10
[  191.748749]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  191.749237]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  191.749659]  ? __kthread_parkme+0x82/0x180
[  191.750156]  ? preempt_count_sub+0x50/0x80
[  191.750375]  ? __pfx_kunit_try_run_case+0x10/0x10
[  191.750653]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  191.750885]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  191.751445]  kthread+0x337/0x6f0
[  191.751769]  ? trace_preempt_on+0x20/0xc0
[  191.752205]  ? __pfx_kthread+0x10/0x10
[  191.752615]  ? _raw_spin_unlock_irq+0x47/0x80
[  191.752887]  ? calculate_sigpending+0x7b/0xa0
[  191.753317]  ? __pfx_kthread+0x10/0x10
[  191.753526]  ret_from_fork+0x116/0x1d0
[  191.753703]  ? __pfx_kthread+0x10/0x10
[  191.753884]  ret_from_fork_asm+0x1a/0x30
[  191.754362]  </TASK>
[  191.754504] ---[ end trace 0000000000000000 ]---