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[  140.672586] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  140.672713] WARNING: CPU: 0 PID: 2545 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x13f/0x1c0
[  140.673541] Modules linked in:
[  140.673884] CPU: 0 UID: 0 PID: 2545 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[  140.674841] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  140.675153] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  140.675684] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  140.676005] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 cb 3e 87 00 48 c7 c1 40 29 fd 8c 4c 89 fa 48 c7 c7 a0 29 fd 8c 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
[  140.677051] RSP: 0000:ffff88810a147b68 EFLAGS: 00010282
[  140.677392] RAX: 0000000000000000 RBX: ffff88810a147c40 RCX: 1ffffffff1ba4c80
[  140.677691] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  140.677985] RBP: ffff88810a147b90 R08: 0000000000000000 R09: fffffbfff1ba4c80
[  140.678804] R10: 0000000000000003 R11: 0000000000037b40 R12: ffff88810a147c18
[  140.679018] R13: ffff888109d95000 R14: ffff888109de8000 R15: ffff88810113f280
[  140.679715] FS:  0000000000000000(0000) GS:ffff8881cc074000(0000) knlGS:0000000000000000
[  140.680663] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  140.681416] CR2: 00007ffff7ffe000 CR3: 00000001208bc000 CR4: 00000000000006f0
[  140.681920] DR0: ffffffff8f050440 DR1: ffffffff8f050441 DR2: ffffffff8f050442
[  140.682560] DR3: ffffffff8f050443 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  140.683340] Call Trace:
[  140.683535]  <TASK>
[  140.683689]  drm_test_framebuffer_free+0x1ab/0x610
[  140.684188]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  140.684508]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  140.684690]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  140.684865]  ? __drmm_add_action_or_reset+0x22/0x50
[  140.685035]  ? __schedule+0x10cc/0x2b60
[  140.685622]  ? __pfx_read_tsc+0x10/0x10
[  140.686345]  ? ktime_get_ts64+0x86/0x230
[  140.686792]  kunit_try_run_case+0x1a5/0x480
[  140.687344]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.687803]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  140.688380]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  140.688712]  ? __kthread_parkme+0x82/0x180
[  140.688867]  ? preempt_count_sub+0x50/0x80
[  140.689017]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.689284]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  140.689720]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  140.690119]  kthread+0x337/0x6f0
[  140.692106]  ? trace_preempt_on+0x20/0xc0
[  140.692356]  ? __pfx_kthread+0x10/0x10
[  140.692539]  ? _raw_spin_unlock_irq+0x47/0x80
[  140.692754]  ? calculate_sigpending+0x7b/0xa0
[  140.692982]  ? __pfx_kthread+0x10/0x10
[  140.693184]  ret_from_fork+0x116/0x1d0
[  140.693547]  ? __pfx_kthread+0x10/0x10
[  140.693739]  ret_from_fork_asm+0x1a/0x30
[  140.693989]  </TASK>
[  140.694227] ---[ end trace 0000000000000000 ]---