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[  206.318758] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  206.319013] WARNING: CPU: 1 PID: 2522 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x13f/0x1c0
[  206.321573] Modules linked in:
[  206.322252] CPU: 1 UID: 0 PID: 2522 Comm: kunit_try_catch Tainted: G    B D W        N  6.15.3-rc1 #1 PREEMPT(voluntary) 
[  206.323343] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  206.323825] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  206.324728] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  206.325516] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 5b 81 84 00 48 c7 c1 e0 57 bc 9b 4c 89 fa 48 c7 c7 40 58 bc 9b 48 89 c6 e8 d2 c9 81 fe 90 <0f> 0b 90 90 e9 1c ff ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 ea
[  206.326959] RSP: 0000:ffff8881024f7b68 EFLAGS: 00010282
[  206.327685] RAX: 0000000000000000 RBX: ffff8881024f7c40 RCX: 1ffffffff3924b3c
[  206.328401] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  206.328956] RBP: ffff8881024f7b90 R08: 0000000000000000 R09: fffffbfff3924b3c
[  206.329606] R10: 0000000000000003 R11: 0000000000034760 R12: ffff8881024f7c18
[  206.330245] R13: ffff888103950800 R14: ffff888102704000 R15: ffff888101627c00
[  206.331065] FS:  0000000000000000(0000) GS:ffff8881bd593000(0000) knlGS:0000000000000000
[  206.331671] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  206.332926] CR2: 00007ffff7ffe000 CR3: 000000006b8ba000 CR4: 00000000000006f0
[  206.333750] DR0: ffffffff9dc30900 DR1: ffffffff9dc30901 DR2: ffffffff9dc30903
[  206.334596] DR3: ffffffff9dc30905 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  206.335127] Call Trace:
[  206.335710]  <TASK>
[  206.336162]  drm_test_framebuffer_free+0x1ab/0x610
[  206.337383]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  206.337860]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  206.338716]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  206.339461]  ? __drmm_add_action_or_reset+0x22/0x50
[  206.340533]  ? __schedule+0x10cc/0x2b60
[  206.340942]  ? __pfx_read_tsc+0x10/0x10
[  206.341741]  ? ktime_get_ts64+0x86/0x230
[  206.342561]  kunit_try_run_case+0x1a5/0x480
[  206.343421]  ? __pfx_kunit_try_run_case+0x10/0x10
[  206.343808]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  206.344622]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  206.345071]  ? __kthread_parkme+0x82/0x180
[  206.345931]  ? preempt_count_sub+0x50/0x80
[  206.346686]  ? __pfx_kunit_try_run_case+0x10/0x10
[  206.347457]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  206.347954]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  206.348769]  kthread+0x337/0x6f0
[  206.348932]  ? trace_preempt_on+0x20/0xc0
[  206.349129]  ? __pfx_kthread+0x10/0x10
[  206.349292]  ? _raw_spin_unlock_irq+0x47/0x80
[  206.350078]  ? calculate_sigpending+0x7b/0xa0
[  206.350784]  ? __pfx_kthread+0x10/0x10
[  206.351704]  ret_from_fork+0x41/0x80
[  206.352329]  ? __pfx_kthread+0x10/0x10
[  206.352920]  ret_from_fork_asm+0x1a/0x30
[  206.353585]  </TASK>
[  206.353893] ---[ end trace 0000000000000000 ]---