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[  147.109788] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  147.110151] WARNING: CPU: 1 PID: 2545 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x13f/0x1c0
[  147.111405] Modules linked in:
[  147.111628] CPU: 1 UID: 0 PID: 2545 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[  147.112394] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  147.112796] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  147.113396] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  147.113704] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 2b 44 87 00 48 c7 c1 c0 38 3d 9c 4c 89 fa 48 c7 c7 20 39 3d 9c 48 89 c6 e8 f2 de 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
[  147.114817] RSP: 0000:ffff888103e7fb68 EFLAGS: 00010282
[  147.115286] RAX: 0000000000000000 RBX: ffff888103e7fc40 RCX: 1ffffffff3a24cf0
[  147.115887] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  147.116350] RBP: ffff888103e7fb90 R08: 0000000000000000 R09: fffffbfff3a24cf0
[  147.116858] R10: 0000000000000003 R11: 00000000000371e0 R12: ffff888103e7fc18
[  147.117458] R13: ffff88810403f800 R14: ffff888103b76000 R15: ffff888103575080
[  147.118006] FS:  0000000000000000(0000) GS:ffff8881bcd72000(0000) knlGS:0000000000000000
[  147.118726] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  147.119336] CR2: 00007ffff7ffe000 CR3: 000000014a4bc000 CR4: 00000000000006f0
[  147.119823] DR0: ffffffff9e452444 DR1: ffffffff9e452449 DR2: ffffffff9e45244a
[  147.120226] DR3: ffffffff9e45244b DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  147.120568] Call Trace:
[  147.120702]  <TASK>
[  147.121114]  drm_test_framebuffer_free+0x1ab/0x610
[  147.121478]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  147.121804]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  147.122287]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  147.122743]  ? __drmm_add_action_or_reset+0x22/0x50
[  147.123253]  ? __schedule+0x10cc/0x2b60
[  147.123463]  ? __pfx_read_tsc+0x10/0x10
[  147.123767]  ? ktime_get_ts64+0x86/0x230
[  147.124144]  kunit_try_run_case+0x1a5/0x480
[  147.124364]  ? __pfx_kunit_try_run_case+0x10/0x10
[  147.124594]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  147.124808]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  147.125374]  ? __kthread_parkme+0x82/0x180
[  147.125693]  ? preempt_count_sub+0x50/0x80
[  147.125967]  ? __pfx_kunit_try_run_case+0x10/0x10
[  147.126315]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  147.126781]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  147.127140]  kthread+0x337/0x6f0
[  147.127509]  ? trace_preempt_on+0x20/0xc0
[  147.127729]  ? __pfx_kthread+0x10/0x10
[  147.128152]  ? _raw_spin_unlock_irq+0x47/0x80
[  147.128382]  ? calculate_sigpending+0x7b/0xa0
[  147.128732]  ? __pfx_kthread+0x10/0x10
[  147.129011]  ret_from_fork+0x116/0x1d0
[  147.129392]  ? __pfx_kthread+0x10/0x10
[  147.129602]  ret_from_fork_asm+0x1a/0x30
[  147.130009]  </TASK>
[  147.130166] ---[ end trace 0000000000000000 ]---