------------[ cut here ]------------
[  141.260931] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  141.261083] WARNING: CPU: 1 PID: 2546 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x13f/0x1c0
[  141.263786] Modules linked in:
[  141.264341] CPU: 1 UID: 0 PID: 2546 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[  141.265865] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  141.266074] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  141.266342] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  141.267196] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 2b 44 87 00 48 c7 c1 00 3a 3d 96 4c 89 fa 48 c7 c7 60 3a 3d 96 48 89 c6 e8 72 ce 7e fe 90 <0f> 0b 90 90 e9 1c ff ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 ea
[  141.268657] RSP: 0000:ffff88810ae37b68 EFLAGS: 00010282
[  141.268853] RAX: 0000000000000000 RBX: ffff88810ae37c40 RCX: 1ffffffff2e24cf0
[  141.269239] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  141.269767] RBP: ffff88810ae37b90 R08: 0000000000000000 R09: fffffbfff2e24cf0
[  141.270032] R10: 0000000000000003 R11: 00000000000383a0 R12: ffff88810ae37c18
[  141.270239] R13: ffff88810ae98800 R14: ffff88810ae3f000 R15: ffff88810954c480
[  141.270730] FS:  0000000000000000(0000) GS:ffff8881c2d72000(0000) knlGS:0000000000000000
[  141.271464] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  141.272144] CR2: 00007ffff7ffe000 CR3: 00000001314bc000 CR4: 00000000000006f0
[  141.272922] DR0: ffffffff98452444 DR1: ffffffff98452449 DR2: ffffffff9845244a
[  141.273167] DR3: ffffffff9845244b DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  141.273420] Call Trace:
[  141.273746]  <TASK>
[  141.273978]  drm_test_framebuffer_free+0x1ab/0x610
[  141.274545]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  141.275070]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  141.275547]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  141.276027]  ? __drmm_add_action_or_reset+0x22/0x50
[  141.276214]  ? __schedule+0x10cc/0x2b60
[  141.276362]  ? __pfx_read_tsc+0x10/0x10
[  141.276926]  ? ktime_get_ts64+0x86/0x230
[  141.277347]  kunit_try_run_case+0x1a5/0x480
[  141.278032]  ? __pfx_kunit_try_run_case+0x10/0x10
[  141.278528]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  141.278821]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  141.278994]  ? __kthread_parkme+0x82/0x180
[  141.279159]  ? preempt_count_sub+0x50/0x80
[  141.279306]  ? __pfx_kunit_try_run_case+0x10/0x10
[  141.279811]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  141.280317]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  141.281096]  kthread+0x337/0x6f0
[  141.281480]  ? trace_preempt_on+0x20/0xc0
[  141.281891]  ? __pfx_kthread+0x10/0x10
[  141.282219]  ? _raw_spin_unlock_irq+0x47/0x80
[  141.282453]  ? calculate_sigpending+0x7b/0xa0
[  141.282878]  ? __pfx_kthread+0x10/0x10
[  141.283223]  ret_from_fork+0x116/0x1d0
[  141.283368]  ? __pfx_kthread+0x10/0x10
[  141.284143]  ret_from_fork_asm+0x1a/0x30
[  141.284592]  </TASK>
[  141.284908] ---[ end trace 0000000000000000 ]---