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[  140.674095] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  140.675115] WARNING: CPU: 0 PID: 2522 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x13f/0x1c0
[  140.676146] Modules linked in:
[  140.676381] CPU: 0 UID: 0 PID: 2522 Comm: kunit_try_catch Tainted: G    B D W        N  6.15.4-rc2 #1 PREEMPT(voluntary) 
[  140.676828] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  140.677899] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  140.678965] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  140.679690] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 bb 84 84 00 48 c7 c1 60 5b 7c a7 4c 89 fa 48 c7 c7 c0 5b 7c a7 48 89 c6 e8 42 b0 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
[  140.680935] RSP: 0000:ffff88810686fb68 EFLAGS: 00010282
[  140.681674] RAX: 0000000000000000 RBX: ffff88810686fc40 RCX: 1ffffffff50a4b60
[  140.682005] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  140.682901] RBP: ffff88810686fb90 R08: 0000000000000000 R09: fffffbfff50a4b60
[  140.683237] R10: 0000000000000003 R11: 00000000000377c8 R12: ffff88810686fc18
[  140.684399] R13: ffff88810613b000 R14: ffff888106863000 R15: ffff888106b65d00
[  140.684722] FS:  0000000000000000(0000) GS:ffff8881b1893000(0000) knlGS:0000000000000000
[  140.685214] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  140.685999] CR2: 00007ffff7ffe000 CR3: 000000005f4ba000 CR4: 00000000000006f0
[  140.686295] DR0: ffffffffa9830900 DR1: ffffffffa9830901 DR2: ffffffffa9830902
[  140.686904] DR3: ffffffffa9830903 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  140.687206] Call Trace:
[  140.687950]  <TASK>
[  140.688266]  drm_test_framebuffer_free+0x1ab/0x610
[  140.688885]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  140.689140]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  140.689959]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  140.690258]  ? __drmm_add_action_or_reset+0x22/0x50
[  140.690778]  ? __schedule+0x10cc/0x2b60
[  140.691207]  ? __pfx_read_tsc+0x10/0x10
[  140.692031]  ? ktime_get_ts64+0x86/0x230
[  140.692263]  kunit_try_run_case+0x1a5/0x480
[  140.692567]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.692953]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  140.693185]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  140.693728]  ? __kthread_parkme+0x82/0x180
[  140.694094]  ? preempt_count_sub+0x50/0x80
[  140.694527]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.694885]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  140.695463]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  140.695975]  kthread+0x337/0x6f0
[  140.696168]  ? trace_preempt_on+0x20/0xc0
[  140.696644]  ? __pfx_kthread+0x10/0x10
[  140.696978]  ? _raw_spin_unlock_irq+0x47/0x80
[  140.697269]  ? calculate_sigpending+0x7b/0xa0
[  140.697781]  ? __pfx_kthread+0x10/0x10
[  140.697983]  ret_from_fork+0x41/0x80
[  140.698188]  ? __pfx_kthread+0x10/0x10
[  140.698764]  ret_from_fork_asm+0x1a/0x30
[  140.699031]  </TASK>
[  140.699161] ---[ end trace 0000000000000000 ]---