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[  143.698967] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  143.699127] WARNING: CPU: 1 PID: 2545 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x13f/0x1c0
[  143.701804] Modules linked in:
[  143.702435] CPU: 1 UID: 0 PID: 2545 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc5 #1 PREEMPT(voluntary) 
[  143.702787] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  143.702971] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  143.703256] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  143.703843] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 3b 3a 87 00 48 c7 c1 40 31 fd 90 4c 89 fa 48 c7 c7 a0 31 fd 90 48 89 c6 e8 02 eb 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
[  143.705020] RSP: 0000:ffff8881090cfb68 EFLAGS: 00010282
[  143.705636] RAX: 0000000000000000 RBX: ffff8881090cfc40 RCX: 1ffffffff23a4c80
[  143.706470] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  143.706924] RBP: ffff8881090cfb90 R08: 0000000000000000 R09: fffffbfff23a4c80
[  143.707368] R10: 0000000000000003 R11: 00000000000379e0 R12: ffff8881090cfc18
[  143.708161] R13: ffff88810900e000 R14: ffff888109079000 R15: ffff888105638100
[  143.708571] FS:  0000000000000000(0000) GS:ffff8881c8172000(0000) knlGS:0000000000000000
[  143.709236] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  143.709644] CR2: 00007ffff7ffe000 CR3: 00000001210bc000 CR4: 00000000000006f0
[  143.710363] DR0: ffffffff93052440 DR1: ffffffff93052441 DR2: ffffffff93052443
[  143.710817] DR3: ffffffff93052445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  143.711034] Call Trace:
[  143.711387]  <TASK>
[  143.711671]  drm_test_framebuffer_free+0x1ab/0x610
[  143.712229]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  143.712760]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  143.713018]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  143.713771]  ? __drmm_add_action_or_reset+0x22/0x50
[  143.714134]  ? __schedule+0x10cc/0x2b60
[  143.714290]  ? __pfx_read_tsc+0x10/0x10
[  143.714434]  ? ktime_get_ts64+0x86/0x230
[  143.714583]  kunit_try_run_case+0x1a5/0x480
[  143.714740]  ? __pfx_kunit_try_run_case+0x10/0x10
[  143.714899]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  143.715062]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  143.715245]  ? __kthread_parkme+0x82/0x180
[  143.715394]  ? preempt_count_sub+0x50/0x80
[  143.715610]  ? __pfx_kunit_try_run_case+0x10/0x10
[  143.715844]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  143.716200]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  143.716458]  kthread+0x337/0x6f0
[  143.716614]  ? trace_preempt_on+0x20/0xc0
[  143.716766]  ? __pfx_kthread+0x10/0x10
[  143.716918]  ? _raw_spin_unlock_irq+0x47/0x80
[  143.717210]  ? calculate_sigpending+0x7b/0xa0
[  143.717438]  ? __pfx_kthread+0x10/0x10
[  143.717697]  ret_from_fork+0x116/0x1d0
[  143.717897]  ? __pfx_kthread+0x10/0x10
[  143.718129]  ret_from_fork_asm+0x1a/0x30
[  143.718285]  </TASK>
[  143.718413] ---[ end trace 0000000000000000 ]---