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[  140.408734] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  140.408922] WARNING: CPU: 1 PID: 2546 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x13f/0x1c0
[  140.409980] Modules linked in:
[  140.410796] CPU: 1 UID: 0 PID: 2546 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc5 #1 PREEMPT(voluntary) 
[  140.412033] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  140.412217] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  140.412930] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  140.413485] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 3b 3a 87 00 48 c7 c1 c0 38 7d a6 4c 89 fa 48 c7 c7 20 39 7d a6 48 89 c6 e8 c2 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
[  140.415235] RSP: 0000:ffff8881098cfb68 EFLAGS: 00010282
[  140.415808] RAX: 0000000000000000 RBX: ffff8881098cfc40 RCX: 1ffffffff4ea4ce8
[  140.416102] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  140.416544] RBP: ffff8881098cfb90 R08: 0000000000000000 R09: fffffbfff4ea4ce8
[  140.416838] R10: 0000000000000003 R11: 00000000000371e8 R12: ffff8881098cfc18
[  140.417240] R13: ffff888109e9c000 R14: ffff888109e8c000 R15: ffff888103f34b80
[  140.417672] FS:  0000000000000000(0000) GS:ffff8881b2972000(0000) knlGS:0000000000000000
[  140.418104] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  140.418325] CR2: 00007ffff7ffe000 CR3: 000000011ecbc000 CR4: 00000000000006f0
[  140.418780] DR0: ffffffffa8852444 DR1: ffffffffa8852449 DR2: ffffffffa885244a
[  140.419077] DR3: ffffffffa885244b DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  140.419361] Call Trace:
[  140.419530]  <TASK>
[  140.419801]  drm_test_framebuffer_free+0x1ab/0x610
[  140.420103]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  140.420299]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  140.420667]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  140.421144]  ? __drmm_add_action_or_reset+0x22/0x50
[  140.421483]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  140.421773]  kunit_try_run_case+0x1a5/0x480
[  140.421979]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.422210]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  140.422495]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  140.422786]  ? __kthread_parkme+0x82/0x180
[  140.422982]  ? preempt_count_sub+0x50/0x80
[  140.423303]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.423807]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  140.424137]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  140.424504]  kthread+0x337/0x6f0
[  140.424710]  ? trace_preempt_on+0x20/0xc0
[  140.424924]  ? __pfx_kthread+0x10/0x10
[  140.425113]  ? _raw_spin_unlock_irq+0x47/0x80
[  140.425306]  ? calculate_sigpending+0x7b/0xa0
[  140.425560]  ? __pfx_kthread+0x10/0x10
[  140.425782]  ret_from_fork+0x116/0x1d0
[  140.426056]  ? __pfx_kthread+0x10/0x10
[  140.426225]  ret_from_fork_asm+0x1a/0x30
[  140.426417]  </TASK>
[  140.426728] ---[ end trace 0000000000000000 ]---