------------[ cut here ]------------
[  198.331121] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  198.331253] WARNING: drivers/gpu/drm/drm_framebuffer.c:832 at drm_framebuffer_free+0x13f/0x1c0, CPU#0: kunit_try_catch/2712
[  198.332616] Modules linked in:
[  198.332992] CPU: 0 UID: 0 PID: 2712 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc6-next-20250715 #1 PREEMPT(voluntary) 
[  198.334035] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  198.334224] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  198.334886] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  198.335458] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 ab fd 88 00 48 c7 c1 80 11 00 bc 4c 89 fa 48 c7 c7 e0 11 00 bc 48 89 c6 e8 a2 09 78 fe 90 <0f> 0b 90 90 e9 1c ff ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 ea
[  198.339193] RSP: 0000:ffff8881094cfb68 EFLAGS: 00010282
[  198.340377] RAX: 0000000000000000 RBX: ffff8881094cfc40 RCX: 1ffffffff79a4a84
[  198.341059] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  198.341289] RBP: ffff8881094cfb90 R08: 0000000000000000 R09: fffffbfff79a4a84
[  198.342347] R10: 0000000000000003 R11: 000000000003a1f0 R12: ffff8881094cfc18
[  198.343175] R13: ffff888104305000 R14: ffff888102fc2000 R15: ffff888105f2be00
[  198.343792] FS:  0000000000000000(0000) GS:ffff88819d015000(0000) knlGS:0000000000000000
[  198.344173] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  198.344369] CR2: 00007ffff7ffe000 CR3: 00000001216bc000 CR4: 00000000000006f0
[  198.345434] DR0: ffffffffbe0b1540 DR1: ffffffffbe0b1541 DR2: ffffffffbe0b1542
[  198.345817] DR3: ffffffffbe0b1543 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  198.346276] Call Trace:
[  198.346470]  <TASK>
[  198.346673]  drm_test_framebuffer_free+0x1ab/0x610
[  198.347079]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  198.347346]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  198.347899]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  198.348271]  ? __drmm_add_action_or_reset+0x22/0x50
[  198.348904]  ? __schedule+0x10cc/0x2b60
[  198.349101]  ? __pfx_read_tsc+0x10/0x10
[  198.349310]  ? ktime_get_ts64+0x86/0x230
[  198.349534]  kunit_try_run_case+0x1a5/0x480
[  198.349821]  ? __pfx_kunit_try_run_case+0x10/0x10
[  198.350061]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  198.350275]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  198.350734]  ? __kthread_parkme+0x82/0x180
[  198.350952]  ? preempt_count_sub+0x50/0x80
[  198.351107]  ? __pfx_kunit_try_run_case+0x10/0x10
[  198.351383]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  198.351721]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  198.352013]  kthread+0x337/0x6f0
[  198.352199]  ? trace_preempt_on+0x20/0xc0
[  198.352433]  ? __pfx_kthread+0x10/0x10
[  198.352622]  ? _raw_spin_unlock_irq+0x47/0x80
[  198.353018]  ? calculate_sigpending+0x7b/0xa0
[  198.353383]  ? __pfx_kthread+0x10/0x10
[  198.354015]  ret_from_fork+0x116/0x1d0
[  198.354437]  ? __pfx_kthread+0x10/0x10
[  198.354983]  ret_from_fork_asm+0x1a/0x30
[  198.355212]  </TASK>
[  198.355347] ---[ end trace 0000000000000000 ]---