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[  144.788670] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  144.788804] WARNING: CPU: 0 PID: 2547 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x13f/0x1c0
[  144.790728] Modules linked in:
[  144.791321] CPU: 0 UID: 0 PID: 2547 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[  144.792500] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  144.792921] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  144.793488] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  144.793746] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 3b 3a 87 00 48 c7 c1 c0 2f fd bb 4c 89 fa 48 c7 c7 20 30 fd bb 48 89 c6 e8 72 ef 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
[  144.794599] RSP: 0000:ffff888109307b68 EFLAGS: 00010282
[  144.794874] RAX: 0000000000000000 RBX: ffff888109307c40 RCX: 1ffffffff79a4c80
[  144.795157] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  144.795442] RBP: ffff888109307b90 R08: 0000000000000000 R09: fffffbfff79a4c80
[  144.795806] R10: 0000000000000003 R11: 00000000000377c8 R12: ffff888109307c18
[  144.796083] R13: ffff888108f22800 R14: ffff88810908c000 R15: ffff888107ee7380
[  144.796532] FS:  0000000000000000(0000) GS:ffff88819d074000(0000) knlGS:0000000000000000
[  144.796836] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  144.797084] CR2: 00007ffff7ffe000 CR3: 00000000394bc000 CR4: 00000000000006f0
[  144.797544] DR0: ffffffffbe050440 DR1: ffffffffbe050441 DR2: ffffffffbe050442
[  144.797876] DR3: ffffffffbe050443 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  144.798130] Call Trace:
[  144.798390]  <TASK>
[  144.798556]  drm_test_framebuffer_free+0x1ab/0x610
[  144.798760]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  144.799074]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  144.799400]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  144.799667]  ? __drmm_add_action_or_reset+0x22/0x50
[  144.799898]  ? __schedule+0x10cc/0x2b60
[  144.800092]  ? __pfx_read_tsc+0x10/0x10
[  144.800429]  ? ktime_get_ts64+0x86/0x230
[  144.800641]  kunit_try_run_case+0x1a5/0x480
[  144.800838]  ? __pfx_kunit_try_run_case+0x10/0x10
[  144.801086]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  144.801560]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  144.801832]  ? __kthread_parkme+0x82/0x180
[  144.802018]  ? preempt_count_sub+0x50/0x80
[  144.802207]  ? __pfx_kunit_try_run_case+0x10/0x10
[  144.802516]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  144.802971]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  144.803297]  kthread+0x337/0x6f0
[  144.803826]  ? trace_preempt_on+0x20/0xc0
[  144.804084]  ? __pfx_kthread+0x10/0x10
[  144.804259]  ? _raw_spin_unlock_irq+0x47/0x80
[  144.804573]  ? calculate_sigpending+0x7b/0xa0
[  144.804817]  ? __pfx_kthread+0x10/0x10
[  144.805097]  ret_from_fork+0x116/0x1d0
[  144.805445]  ? __pfx_kthread+0x10/0x10
[  144.805671]  ret_from_fork_asm+0x1a/0x30
[  144.805872]  </TASK>
[  144.806000] ---[ end trace 0000000000000000 ]---