------------[ cut here ]------------
[  193.478107] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  193.478429] WARNING: drivers/gpu/drm/drm_framebuffer.c:833 at drm_framebuffer_free+0x13f/0x1c0, CPU#0: kunit_try_catch/2712
[  193.480128] Modules linked in:
[  193.480641] CPU: 0 UID: 0 PID: 2712 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc6-next-20250718 #1 PREEMPT(voluntary) 
[  193.481652] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  193.482213] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  193.482632] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  193.483021] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 5b 06 89 00 48 c7 c1 80 15 e0 b5 4c 89 fa 48 c7 c7 e0 15 e0 b5 48 89 c6 e8 12 eb 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
[  193.484633] RSP: 0000:ffff88810a5efb68 EFLAGS: 00010282
[  193.485175] RAX: 0000000000000000 RBX: ffff88810a5efc40 RCX: 1ffffffff6d64aac
[  193.485965] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  193.486571] RBP: ffff88810a5efb90 R08: 0000000000000000 R09: fffffbfff6d64aac
[  193.487211] R10: 0000000000000003 R11: 00000000000292b0 R12: ffff88810a5efc18
[  193.487640] R13: ffff888105010000 R14: ffff88810ade4000 R15: ffff8881046e7400
[  193.488161] FS:  0000000000000000(0000) GS:ffff8881a3213000(0000) knlGS:0000000000000000
[  193.488967] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  193.489301] CR2: ffffffffffffffff CR3: 000000002f0bc000 CR4: 00000000000006f0
[  193.489504] DR0: ffffffffb7eb3540 DR1: ffffffffb7eb3541 DR2: ffffffffb7eb3543
[  193.489699] DR3: ffffffffb7eb3545 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  193.490355] Call Trace:
[  193.490629]  <TASK>
[  193.490917]  drm_test_framebuffer_free+0x1ab/0x610
[  193.491501]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  193.492112]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  193.492714]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  193.493346]  ? __drmm_add_action_or_reset+0x22/0x50
[  193.493703]  ? __schedule+0x10da/0x2b60
[  193.494275]  ? __pfx_read_tsc+0x10/0x10
[  193.494428]  ? ktime_get_ts64+0x86/0x230
[  193.494566]  kunit_try_run_case+0x1a5/0x480
[  193.494707]  ? __pfx_kunit_try_run_case+0x10/0x10
[  193.494863]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  193.495011]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  193.495181]  ? __kthread_parkme+0x82/0x180
[  193.495317]  ? preempt_count_sub+0x50/0x80
[  193.495494]  ? __pfx_kunit_try_run_case+0x10/0x10
[  193.495720]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  193.495970]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  193.496419]  kthread+0x337/0x6f0
[  193.496599]  ? trace_preempt_on+0x20/0xc0
[  193.496747]  ? __pfx_kthread+0x10/0x10
[  193.496916]  ? _raw_spin_unlock_irq+0x47/0x80
[  193.497093]  ? calculate_sigpending+0x7b/0xa0
[  193.497319]  ? __pfx_kthread+0x10/0x10
[  193.497576]  ret_from_fork+0x116/0x1d0
[  193.497759]  ? __pfx_kthread+0x10/0x10
[  193.498066]  ret_from_fork_asm+0x1a/0x30
[  193.498296]  </TASK>
[  193.498414] ---[ end trace 0000000000000000 ]---