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[  142.129431] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  142.129562] WARNING: CPU: 1 PID: 2545 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x13f/0x1c0
[  142.132150] Modules linked in:
[  142.132572] CPU: 1 UID: 0 PID: 2545 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[  142.133148] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  142.133337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  142.133610] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  142.134031] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 cb 3e 87 00 48 c7 c1 40 29 bd 85 4c 89 fa 48 c7 c7 a0 29 bd 85 48 89 c6 e8 e2 e1 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
[  142.134849] RSP: 0000:ffff8881028afb68 EFLAGS: 00010282
[  142.135119] RAX: 0000000000000000 RBX: ffff8881028afc40 RCX: 1ffffffff0d24c80
[  142.135524] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  142.136219] RBP: ffff8881028afb90 R08: 0000000000000000 R09: fffffbfff0d24c80
[  142.136509] R10: 0000000000000003 R11: 00000000000377d8 R12: ffff8881028afc18
[  142.136991] R13: ffff888102832800 R14: ffff888101dc8000 R15: ffff8881051e3900
[  142.137450] FS:  0000000000000000(0000) GS:ffff8881d3574000(0000) knlGS:0000000000000000
[  142.138104] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  142.138351] CR2: 00007ffff7ffe000 CR3: 000000005d8bc000 CR4: 00000000000006f0
[  142.138690] DR0: ffffffff87c50440 DR1: ffffffff87c50441 DR2: ffffffff87c50443
[  142.139247] DR3: ffffffff87c50445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  142.139564] Call Trace:
[  142.139974]  <TASK>
[  142.140104]  drm_test_framebuffer_free+0x1ab/0x610
[  142.140539]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  142.141045]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  142.141314]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  142.141788]  ? __drmm_add_action_or_reset+0x22/0x50
[  142.142207]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  142.142561]  kunit_try_run_case+0x1a5/0x480
[  142.142972]  ? __pfx_kunit_try_run_case+0x10/0x10
[  142.143296]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  142.143543]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  142.144189]  ? __kthread_parkme+0x82/0x180
[  142.144364]  ? preempt_count_sub+0x50/0x80
[  142.144576]  ? __pfx_kunit_try_run_case+0x10/0x10
[  142.145288]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  142.145525]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  142.145841]  kthread+0x337/0x6f0
[  142.146038]  ? trace_preempt_on+0x20/0xc0
[  142.146200]  ? __pfx_kthread+0x10/0x10
[  142.146395]  ? _raw_spin_unlock_irq+0x47/0x80
[  142.146594]  ? calculate_sigpending+0x7b/0xa0
[  142.146834]  ? __pfx_kthread+0x10/0x10
[  142.147066]  ret_from_fork+0x116/0x1d0
[  142.147204]  ? __pfx_kthread+0x10/0x10
[  142.147683]  ret_from_fork_asm+0x1a/0x30
[  142.147915]  </TASK>
[  142.148029] ---[ end trace 0000000000000000 ]---