------------[ cut here ]------------
[  198.478253] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  198.478383] WARNING: drivers/gpu/drm/drm_framebuffer.c:833 at drm_framebuffer_free+0x13f/0x1c0, CPU#0: kunit_try_catch/2730
[  198.480153] Modules linked in:
[  198.480523] CPU: 0 UID: 0 PID: 2730 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc7-next-20250722 #1 PREEMPT(voluntary) 
[  198.481413] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  198.482042] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  198.482707] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  198.483031] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 1b 06 89 00 48 c7 c1 00 35 40 ab 4c 89 fa 48 c7 c7 60 35 40 ab 48 89 c6 e8 b2 5f 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
[  198.484151] RSP: 0000:ffff8881069efb68 EFLAGS: 00010282
[  198.484520] RAX: 0000000000000000 RBX: ffff8881069efc40 RCX: 1ffffffff5824aac
[  198.484846] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  198.485162] RBP: ffff8881069efb90 R08: 0000000000000000 R09: fffffbfff5824aac
[  198.485530] R10: 0000000000000003 R11: 0000000000049550 R12: ffff8881069efc18
[  198.485953] R13: ffff88810121d800 R14: ffff8881012be000 R15: ffff8881009c6880
[  198.486385] FS:  0000000000000000(0000) GS:ffff8881adc0e000(0000) knlGS:0000000000000000
[  198.486892] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  198.487167] CR2: 00007ffff7ffe000 CR3: 000000001acbc000 CR4: 00000000000006f0
[  198.487558] DR0: ffffffffad4b8580 DR1: ffffffffad4b8581 DR2: ffffffffad4b8582
[  198.487986] DR3: ffffffffad4b8583 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  198.488314] Call Trace:
[  198.488523]  <TASK>
[  198.488782]  drm_test_framebuffer_free+0x1ab/0x610
[  198.489103]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  198.489361]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  198.489726]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  198.490202]  ? __drmm_add_action_or_reset+0x22/0x50
[  198.490639]  ? __schedule+0x10da/0x2b60
[  198.490952]  ? __pfx_read_tsc+0x10/0x10
[  198.491205]  ? ktime_get_ts64+0x86/0x230
[  198.491409]  kunit_try_run_case+0x1a5/0x480
[  198.491769]  ? __pfx_kunit_try_run_case+0x10/0x10
[  198.492028]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  198.492287]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  198.492645]  ? __kthread_parkme+0x82/0x180
[  198.492952]  ? preempt_count_sub+0x50/0x80
[  198.493184]  ? __pfx_kunit_try_run_case+0x10/0x10
[  198.493457]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  198.493772]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  198.494254]  kthread+0x337/0x6f0
[  198.494448]  ? trace_preempt_on+0x20/0xc0
[  198.494740]  ? __pfx_kthread+0x10/0x10
[  198.494963]  ? _raw_spin_unlock_irq+0x47/0x80
[  198.495134]  ? calculate_sigpending+0x7b/0xa0
[  198.495626]  ? __pfx_kthread+0x10/0x10
[  198.495845]  ret_from_fork+0x116/0x1d0
[  198.496037]  ? __pfx_kthread+0x10/0x10
[  198.496225]  ret_from_fork_asm+0x1a/0x30
[  198.496481]  </TASK>
[  198.496607] ---[ end trace 0000000000000000 ]---