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[  141.450609] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  141.450746] WARNING: CPU: 0 PID: 2545 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x13f/0x1c0
[  141.452175] Modules linked in:
[  141.452624] CPU: 0 UID: 0 PID: 2545 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[  141.453764] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  141.454471] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  141.455760] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  141.456373] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 3b 3a 87 00 48 c7 c1 c0 2f fd b2 4c 89 fa 48 c7 c7 20 30 fd b2 48 89 c6 e8 62 ee 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
[  141.456884] RSP: 0000:ffff88810afefb68 EFLAGS: 00010282
[  141.457070] RAX: 0000000000000000 RBX: ffff88810afefc40 RCX: 1ffffffff67a4c80
[  141.457318] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  141.458095] RBP: ffff88810afefb90 R08: 0000000000000000 R09: fffffbfff67a4c80
[  141.458966] R10: 0000000000000003 R11: 0000000000038538 R12: ffff88810afefc18
[  141.459484] R13: ffff88810adac800 R14: ffff88810ac6a000 R15: ffff8881041f7000
[  141.459703] FS:  0000000000000000(0000) GS:ffff8881a6074000(0000) knlGS:0000000000000000
[  141.459942] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  141.460120] CR2: 00007ffff7ffe000 CR3: 00000000774bc000 CR4: 00000000000006f0
[  141.460406] DR0: ffffffffb5050440 DR1: ffffffffb5050441 DR2: ffffffffb5050443
[  141.460752] DR3: ffffffffb5050445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  141.461159] Call Trace:
[  141.461830]  <TASK>
[  141.461970]  drm_test_framebuffer_free+0x1ab/0x610
[  141.462168]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  141.462496]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  141.462961]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  141.463416]  ? __drmm_add_action_or_reset+0x22/0x50
[  141.463742]  ? __schedule+0x10cc/0x2b60
[  141.463936]  ? __pfx_read_tsc+0x10/0x10
[  141.464134]  ? ktime_get_ts64+0x86/0x230
[  141.464368]  kunit_try_run_case+0x1a5/0x480
[  141.464534]  ? __pfx_kunit_try_run_case+0x10/0x10
[  141.464888]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  141.465111]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  141.465307]  ? __kthread_parkme+0x82/0x180
[  141.465596]  ? preempt_count_sub+0x50/0x80
[  141.465811]  ? __pfx_kunit_try_run_case+0x10/0x10
[  141.466044]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  141.466527]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  141.466807]  kthread+0x337/0x6f0
[  141.466951]  ? trace_preempt_on+0x20/0xc0
[  141.467133]  ? __pfx_kthread+0x10/0x10
[  141.467513]  ? _raw_spin_unlock_irq+0x47/0x80
[  141.467861]  ? calculate_sigpending+0x7b/0xa0
[  141.468038]  ? __pfx_kthread+0x10/0x10
[  141.468248]  ret_from_fork+0x116/0x1d0
[  141.468578]  ? __pfx_kthread+0x10/0x10
[  141.468727]  ret_from_fork_asm+0x1a/0x30
[  141.468947]  </TASK>
[  141.469077] ---[ end trace 0000000000000000 ]---