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[  142.760168] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  142.760289] WARNING: CPU: 0 PID: 2546 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x13f/0x1c0
[  142.761324] Modules linked in:
[  142.761536] CPU: 0 UID: 0 PID: 2546 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc5 #1 PREEMPT(voluntary) 
[  142.762376] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  142.762626] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  142.763324] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  142.763555] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 2b 44 87 00 48 c7 c1 40 38 9d 87 4c 89 fa 48 c7 c7 a0 38 9d 87 48 89 c6 e8 72 db 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
[  142.764577] RSP: 0000:ffff88810b8e7b68 EFLAGS: 00010282
[  142.764950] RAX: 0000000000000000 RBX: ffff88810b8e7c40 RCX: 1ffffffff10e4ce8
[  142.765260] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  142.765540] RBP: ffff88810b8e7b90 R08: 0000000000000000 R09: fffffbfff10e4ce8
[  142.765920] R10: 0000000000000003 R11: 0000000000035720 R12: ffff88810b8e7c18
[  142.766204] R13: ffff88810b8f3800 R14: ffff88810b923000 R15: ffff8881077d0e00
[  142.766473] FS:  0000000000000000(0000) GS:ffff8881d1672000(0000) knlGS:0000000000000000
[  142.766855] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  142.767323] CR2: 00007ffff7ffe000 CR3: 000000013d6bc000 CR4: 00000000000006f0
[  142.767864] DR0: ffffffff89a52440 DR1: ffffffff89a52441 DR2: ffffffff89a52442
[  142.768131] DR3: ffffffff89a52443 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  142.768600] Call Trace:
[  142.768807]  <TASK>
[  142.769083]  drm_test_framebuffer_free+0x1ab/0x610
[  142.769313]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  142.769546]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  142.770052]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  142.770386]  ? __drmm_add_action_or_reset+0x22/0x50
[  142.770885]  ? __schedule+0x10cc/0x2b60
[  142.771098]  ? __pfx_read_tsc+0x10/0x10
[  142.771258]  ? ktime_get_ts64+0x86/0x230
[  142.771589]  kunit_try_run_case+0x1a5/0x480
[  142.772047]  ? __pfx_kunit_try_run_case+0x10/0x10
[  142.772686]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  142.772879]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  142.773050]  ? __kthread_parkme+0x82/0x180
[  142.773199]  ? preempt_count_sub+0x50/0x80
[  142.773349]  ? __pfx_kunit_try_run_case+0x10/0x10
[  142.773510]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  142.773687]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  142.773983]  kthread+0x337/0x6f0
[  142.774111]  ? trace_preempt_on+0x20/0xc0
[  142.774255]  ? __pfx_kthread+0x10/0x10
[  142.774411]  ? _raw_spin_unlock_irq+0x47/0x80
[  142.774565]  ? calculate_sigpending+0x7b/0xa0
[  142.774723]  ? __pfx_kthread+0x10/0x10
[  142.775088]  ret_from_fork+0x116/0x1d0
[  142.775281]  ? __pfx_kthread+0x10/0x10
[  142.775483]  ret_from_fork_asm+0x1a/0x30
[  142.775987]  </TASK>
[  142.776132] ---[ end trace 0000000000000000 ]---