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[  163.511906] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  163.512065] WARNING: CPU: 1 PID: 2546 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x13f/0x1c0
[  163.515583] Modules linked in:
[  163.516397] CPU: 1 UID: 0 PID: 2546 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[  163.516959] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  163.517769] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  163.518307] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  163.518537] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 3b 3a 87 00 48 c7 c1 c0 2f dd 97 4c 89 fa 48 c7 c7 20 30 dd 97 48 89 c6 e8 72 ef 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
[  163.520267] RSP: 0000:ffff888107a0fb68 EFLAGS: 00010282
[  163.520589] RAX: 0000000000000000 RBX: ffff888107a0fc40 RCX: 1ffffffff3164c80
[  163.521019] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  163.521441] RBP: ffff888107a0fb90 R08: 0000000000000000 R09: fffffbfff3164c80
[  163.521824] R10: 0000000000000003 R11: 0000000000037a00 R12: ffff888107a0fc18
[  163.522312] R13: ffff8881078a0800 R14: ffff8881078b5000 R15: ffff8881095c2500
[  163.523185] FS:  0000000000000000(0000) GS:ffff8881c1374000(0000) knlGS:0000000000000000
[  163.523624] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  163.524167] CR2: 00007ffff7ffe000 CR3: 0000000056cbc000 CR4: 00000000000006f0
[  163.524619] DR0: ffffffff99e50444 DR1: ffffffff99e50449 DR2: ffffffff99e5044a
[  163.525216] DR3: ffffffff99e5044b DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  163.525559] Call Trace:
[  163.526019]  <TASK>
[  163.526211]  drm_test_framebuffer_free+0x1ab/0x610
[  163.526500]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  163.527044]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  163.527426]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  163.527743]  ? __drmm_add_action_or_reset+0x22/0x50
[  163.528316]  ? __schedule+0x10cc/0x2b60
[  163.528672]  ? __pfx_read_tsc+0x10/0x10
[  163.529053]  ? ktime_get_ts64+0x86/0x230
[  163.529283]  kunit_try_run_case+0x1a5/0x480
[  163.529512]  ? __pfx_kunit_try_run_case+0x10/0x10
[  163.529798]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  163.530383]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  163.530792]  ? __kthread_parkme+0x82/0x180
[  163.531340]  ? preempt_count_sub+0x50/0x80
[  163.531600]  ? __pfx_kunit_try_run_case+0x10/0x10
[  163.532005]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  163.532465]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  163.533067]  kthread+0x337/0x6f0
[  163.533266]  ? trace_preempt_on+0x20/0xc0
[  163.533473]  ? __pfx_kthread+0x10/0x10
[  163.533720]  ? _raw_spin_unlock_irq+0x47/0x80
[  163.534340]  ? calculate_sigpending+0x7b/0xa0
[  163.534764]  ? __pfx_kthread+0x10/0x10
[  163.535209]  ret_from_fork+0x116/0x1d0
[  163.535511]  ? __pfx_kthread+0x10/0x10
[  163.535781]  ret_from_fork_asm+0x1a/0x30
[  163.536278]  </TASK>
[  163.536440] ---[ end trace 0000000000000000 ]---