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[  140.454549] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  140.454678] WARNING: CPU: 1 PID: 2545 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x13f/0x1c0
[  140.456134] Modules linked in:
[  140.456479] CPU: 1 UID: 0 PID: 2545 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[  140.456941] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  140.457280] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  140.457666] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  140.457909] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 2b 44 87 00 48 c7 c1 c0 38 7d 98 4c 89 fa 48 c7 c7 20 39 7d 98 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
[  140.458674] RSP: 0000:ffff88810b2b7b68 EFLAGS: 00010282
[  140.458932] RAX: 0000000000000000 RBX: ffff88810b2b7c40 RCX: 1ffffffff32a4cf0
[  140.459406] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  140.459686] RBP: ffff88810b2b7b90 R08: 0000000000000000 R09: fffffbfff32a4cf0
[  140.460049] R10: 0000000000000003 R11: 00000000000373f8 R12: ffff88810b2b7c18
[  140.460527] R13: ffff88810b28b800 R14: ffff88810b2ca000 R15: ffff888103830f00
[  140.460882] FS:  0000000000000000(0000) GS:ffff8881c0972000(0000) knlGS:0000000000000000
[  140.461291] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  140.461529] CR2: 00007ffff7ffe000 CR3: 000000012a6bc000 CR4: 00000000000006f0
[  140.461839] DR0: ffffffff9a852440 DR1: ffffffff9a852441 DR2: ffffffff9a852443
[  140.462104] DR3: ffffffff9a852445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  140.462342] Call Trace:
[  140.462519]  <TASK>
[  140.462659]  drm_test_framebuffer_free+0x1ab/0x610
[  140.463279]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  140.463525]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  140.464435]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  140.464682]  ? __drmm_add_action_or_reset+0x22/0x50
[  140.464972]  ? __schedule+0x10cc/0x2b60
[  140.465324]  ? __pfx_read_tsc+0x10/0x10
[  140.465536]  ? ktime_get_ts64+0x86/0x230
[  140.465760]  kunit_try_run_case+0x1a5/0x480
[  140.466023]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.466304]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  140.466549]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  140.466802]  ? __kthread_parkme+0x82/0x180
[  140.467037]  ? preempt_count_sub+0x50/0x80
[  140.467462]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.467688]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  140.467969]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  140.468270]  kthread+0x337/0x6f0
[  140.468574]  ? trace_preempt_on+0x20/0xc0
[  140.468776]  ? __pfx_kthread+0x10/0x10
[  140.469116]  ? _raw_spin_unlock_irq+0x47/0x80
[  140.469324]  ? calculate_sigpending+0x7b/0xa0
[  140.469545]  ? __pfx_kthread+0x10/0x10
[  140.469715]  ret_from_fork+0x116/0x1d0
[  140.470059]  ? __pfx_kthread+0x10/0x10
[  140.470236]  ret_from_fork_asm+0x1a/0x30
[  140.470465]  </TASK>
[  140.470595] ---[ end trace 0000000000000000 ]---