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[  147.933705] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  147.933863] WARNING: CPU: 1 PID: 2297 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x136/0x1b0
[  147.936667] Modules linked in:
[  147.937213] CPU: 1 UID: 0 PID: 2297 Comm: kunit_try_catch Tainted: G    B D W        N 6.14.7-rc1 #1
[  147.937507] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  147.937685] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  147.937970] RIP: 0010:drm_framebuffer_free+0x136/0x1b0
[  147.938508] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 d4 4c 82 00 48 c7 c1 20 5e 7b a4 4c 89 fa 48 c7 c7 80 5e 7b a4 48 89 c6 e8 0b 36 87 fe 90 <0f> 0b 90 90 e9 25 ff ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 ea
[  147.939498] RSP: 0000:ffff888102cdfb68 EFLAGS: 00010282
[  147.939876] RAX: 0000000000000000 RBX: ffff888102cdfc40 RCX: 1ffffffff4aa4408
[  147.940324] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  147.940784] RBP: ffff888102cdfb90 R08: 0000000000000000 R09: fffffbfff4aa4408
[  147.941238] R10: 0000000000000003 R11: 0000000000031a28 R12: ffff888102cdfc18
[  147.941652] R13: ffff888102883800 R14: ffff888102933000 R15: ffff888104978100
[  147.942134] FS:  0000000000000000(0000) GS:ffff888154b00000(0000) knlGS:0000000000000000
[  147.942459] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  147.942694] CR2: 00007ffff7ffe000 CR3: 0000000168eb8000 CR4: 00000000000006f0
[  147.942985] DR0: ffffffffa680d2a0 DR1: ffffffffa680d2a1 DR2: ffffffffa680d2a3
[  147.943554] DR3: ffffffffa680d2a5 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  147.943945] Call Trace:
[  147.944059]  <TASK>
[  147.944407]  drm_test_framebuffer_free+0x1ac/0x610
[  147.944721]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  147.945095]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  147.945353]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  147.945745]  ? __drmm_add_action_or_reset+0x22/0x50
[  147.946093]  ? __schedule+0xce8/0x2840
[  147.946479]  ? __pfx_read_tsc+0x10/0x10
[  147.946654]  ? ktime_get_ts64+0x86/0x230
[  147.946860]  kunit_try_run_case+0x1a6/0x480
[  147.947293]  ? __pfx_kunit_try_run_case+0x10/0x10
[  147.947652]  ? _raw_spin_lock_irqsave+0xa2/0x110
[  147.947864]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  147.948316]  ? __kthread_parkme+0x82/0x160
[  147.948531]  ? preempt_count_sub+0x50/0x80
[  147.948714]  ? __pfx_kunit_try_run_case+0x10/0x10
[  147.949336]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  147.949588]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  147.949988]  kthread+0x324/0x6e0
[  147.950275]  ? trace_preempt_on+0x20/0xc0
[  147.950434]  ? __pfx_kthread+0x10/0x10
[  147.950783]  ? _raw_spin_unlock_irq+0x47/0x80
[  147.951013]  ? calculate_sigpending+0x7b/0xa0
[  147.951853]  ? __pfx_kthread+0x10/0x10
[  147.952194]  ret_from_fork+0x41/0x80
[  147.952512]  ? __pfx_kthread+0x10/0x10
[  147.952828]  ret_from_fork_asm+0x1a/0x30
[  147.953373]  </TASK>
[  147.953529] ---[ end trace 0000000000000000 ]---