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[  149.277647] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  149.277793] WARNING: CPU: 0 PID: 2545 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x13f/0x1c0
[  149.280095] Modules linked in:
[  149.280329] CPU: 0 UID: 0 PID: 2545 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[  149.281306] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  149.281799] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  149.282462] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  149.282935] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 cb 3e 87 00 48 c7 c1 40 29 9d 8b 4c 89 fa 48 c7 c7 a0 29 9d 8b 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
[  149.284191] RSP: 0000:ffff888103f7fb68 EFLAGS: 00010282
[  149.284692] RAX: 0000000000000000 RBX: ffff888103f7fc40 RCX: 1ffffffff18e4c80
[  149.285275] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  149.285775] RBP: ffff888103f7fb90 R08: 0000000000000000 R09: fffffbfff18e4c80
[  149.286372] R10: 0000000000000003 R11: 00000000000386d8 R12: ffff888103f7fc18
[  149.286962] R13: ffff888106e83000 R14: ffff888103f72000 R15: ffff888106c94400
[  149.287989] FS:  0000000000000000(0000) GS:ffff8881cd674000(0000) knlGS:0000000000000000
[  149.288883] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  149.289622] CR2: 00007ffff7ffe000 CR3: 0000000069cbc000 CR4: 00000000000006f0
[  149.290501] DR0: ffffffff8da50440 DR1: ffffffff8da50441 DR2: ffffffff8da50442
[  149.291369] DR3: ffffffff8da50443 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  149.292441] Call Trace:
[  149.292600]  <TASK>
[  149.292768]  drm_test_framebuffer_free+0x1ab/0x610
[  149.293393]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  149.294190]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  149.294558]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  149.294982]  ? __drmm_add_action_or_reset+0x22/0x50
[  149.295636]  ? __schedule+0x10cc/0x2b60
[  149.296123]  ? __pfx_read_tsc+0x10/0x10
[  149.296329]  ? ktime_get_ts64+0x86/0x230
[  149.296510]  kunit_try_run_case+0x1a5/0x480
[  149.296742]  ? __pfx_kunit_try_run_case+0x10/0x10
[  149.297248]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  149.297848]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  149.298584]  ? __kthread_parkme+0x82/0x180
[  149.299198]  ? preempt_count_sub+0x50/0x80
[  149.299661]  ? __pfx_kunit_try_run_case+0x10/0x10
[  149.299851]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  149.300740]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  149.301505]  kthread+0x337/0x6f0
[  149.301670]  ? trace_preempt_on+0x20/0xc0
[  149.301856]  ? __pfx_kthread+0x10/0x10
[  149.302083]  ? _raw_spin_unlock_irq+0x47/0x80
[  149.302519]  ? calculate_sigpending+0x7b/0xa0
[  149.303049]  ? __pfx_kthread+0x10/0x10
[  149.303219]  ret_from_fork+0x116/0x1d0
[  149.303369]  ? __pfx_kthread+0x10/0x10
[  149.303532]  ret_from_fork_asm+0x1a/0x30
[  149.303706]  </TASK>
[  149.303823] ---[ end trace 0000000000000000 ]---