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[  140.903455] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  140.903689] WARNING: CPU: 1 PID: 2546 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x13f/0x1c0
[  140.904570] Modules linked in:
[  140.904979] CPU: 1 UID: 0 PID: 2546 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[  140.905510] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  140.905992] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  140.906559] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  140.906878] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 2b 44 87 00 48 c7 c1 00 3a fd 94 4c 89 fa 48 c7 c7 60 3a fd 94 48 89 c6 e8 f2 cd 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
[  140.908179] RSP: 0000:ffff88810a6a7b68 EFLAGS: 00010282
[  140.908525] RAX: 0000000000000000 RBX: ffff88810a6a7c40 RCX: 1ffffffff2ba4cf0
[  140.908833] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  140.909120] RBP: ffff88810a6a7b90 R08: 0000000000000000 R09: fffffbfff2ba4cf0
[  140.909511] R10: 0000000000000003 R11: 0000000000037f30 R12: ffff88810a6a7c18
[  140.909846] R13: ffff888109e2e800 R14: ffff88810a640000 R15: ffff88810c1ffd00
[  140.910177] FS:  0000000000000000(0000) GS:ffff8881c4172000(0000) knlGS:0000000000000000
[  140.910679] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  140.911090] CR2: 00007ffff7ffe000 CR3: 0000000050abc000 CR4: 00000000000006f0
[  140.911529] DR0: ffffffff97052440 DR1: ffffffff97052441 DR2: ffffffff97052443
[  140.912024] DR3: ffffffff97052445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  140.912479] Call Trace:
[  140.912603]  <TASK>
[  140.912762]  drm_test_framebuffer_free+0x1ab/0x610
[  140.913011]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  140.913192]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  140.913573]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  140.913825]  ? __drmm_add_action_or_reset+0x22/0x50
[  140.914122]  ? __schedule+0x10cc/0x2b60
[  140.914376]  ? __pfx_read_tsc+0x10/0x10
[  140.914743]  ? ktime_get_ts64+0x86/0x230
[  140.915093]  kunit_try_run_case+0x1a5/0x480
[  140.915285]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.915621]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  140.915782]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  140.916213]  ? __kthread_parkme+0x82/0x180
[  140.916573]  ? preempt_count_sub+0x50/0x80
[  140.916985]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.917190]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  140.917717]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  140.917955]  kthread+0x337/0x6f0
[  140.918132]  ? trace_preempt_on+0x20/0xc0
[  140.918315]  ? __pfx_kthread+0x10/0x10
[  140.918684]  ? _raw_spin_unlock_irq+0x47/0x80
[  140.919065]  ? calculate_sigpending+0x7b/0xa0
[  140.919435]  ? __pfx_kthread+0x10/0x10
[  140.919608]  ret_from_fork+0x116/0x1d0
[  140.919805]  ? __pfx_kthread+0x10/0x10
[  140.920015]  ret_from_fork_asm+0x1a/0x30
[  140.920462]  </TASK>
[  140.920572] ---[ end trace 0000000000000000 ]---