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[  139.044769] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  139.044906] WARNING: CPU: 1 PID: 2545 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x13f/0x1c0
[  139.046714] Modules linked in:
[  139.047087] CPU: 1 UID: 0 PID: 2545 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[  139.047947] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  139.048285] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  139.049127] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  139.049585] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 2b 44 87 00 48 c7 c1 c0 38 1d bb 4c 89 fa 48 c7 c7 20 39 1d bb 48 89 c6 e8 b2 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
[  139.050518] RSP: 0000:ffff88810afdfb68 EFLAGS: 00010282
[  139.050775] RAX: 0000000000000000 RBX: ffff88810afdfc40 RCX: 1ffffffff77e4cf0
[  139.050989] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  139.051737] RBP: ffff88810afdfb90 R08: 0000000000000000 R09: fffffbfff77e4cf0
[  139.052539] R10: 0000000000000003 R11: 0000000000037430 R12: ffff88810afdfc18
[  139.053270] R13: ffff88810b058800 R14: ffff888103b12000 R15: ffff8881096a1a00
[  139.053729] FS:  0000000000000000(0000) GS:ffff88819df72000(0000) knlGS:0000000000000000
[  139.053971] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  139.054316] CR2: 00007ffff7ffe000 CR3: 000000007b0bc000 CR4: 00000000000006f0
[  139.055257] DR0: ffffffffbd252444 DR1: ffffffffbd252449 DR2: ffffffffbd25244a
[  139.055918] DR3: ffffffffbd25244b DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  139.056659] Call Trace:
[  139.056879]  <TASK>
[  139.056992]  drm_test_framebuffer_free+0x1ab/0x610
[  139.057415]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  139.057975]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  139.058431]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  139.058801]  ? __drmm_add_action_or_reset+0x22/0x50
[  139.058982]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  139.059187]  kunit_try_run_case+0x1a5/0x480
[  139.059655]  ? __pfx_kunit_try_run_case+0x10/0x10
[  139.060086]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  139.060647]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  139.061132]  ? __kthread_parkme+0x82/0x180
[  139.061460]  ? preempt_count_sub+0x50/0x80
[  139.061620]  ? __pfx_kunit_try_run_case+0x10/0x10
[  139.061784]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  139.061970]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  139.062346]  kthread+0x337/0x6f0
[  139.062655]  ? trace_preempt_on+0x20/0xc0
[  139.063279]  ? __pfx_kthread+0x10/0x10
[  139.063685]  ? _raw_spin_unlock_irq+0x47/0x80
[  139.064088]  ? calculate_sigpending+0x7b/0xa0
[  139.064581]  ? __pfx_kthread+0x10/0x10
[  139.065019]  ret_from_fork+0x116/0x1d0
[  139.065363]  ? __pfx_kthread+0x10/0x10
[  139.065507]  ret_from_fork_asm+0x1a/0x30
[  139.065662]  </TASK>
[  139.065755] ---[ end trace 0000000000000000 ]---