------------[ cut here ]------------
[  180.676701] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  180.677739] WARNING: CPU: 1 PID: 2297 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x136/0x1b0
[  180.680193] Modules linked in:
[  180.680807] CPU: 1 UID: 0 PID: 2297 Comm: kunit_try_catch Tainted: G    B D W        N 6.14.11-rc1 #1
[  180.681483] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  180.682157] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  180.683007] RIP: 0010:drm_framebuffer_free+0x136/0x1b0
[  180.683889] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 64 63 82 00 48 c7 c1 e0 61 5b b4 4c 89 fa 48 c7 c7 40 62 5b b4 48 89 c6 e8 eb c7 86 fe 90 <0f> 0b 90 90 e9 25 ff ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 ea
[  180.685251] RSP: 0000:ffff8881052efb68 EFLAGS: 00010282
[  180.685624] RAX: 0000000000000000 RBX: ffff8881052efc40 RCX: 1ffffffff6a64420
[  180.687663] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  180.688258] RBP: ffff8881052efb90 R08: 0000000000000000 R09: fffffbfff6a64420
[  180.689149] R10: 0000000000000003 R11: 0000000000031278 R12: ffff8881052efc18
[  180.689761] R13: ffff888105171000 R14: ffff8881050d5000 R15: ffff888103bba900
[  180.691794] FS:  0000000000000000(0000) GS:ffff88815b100000(0000) knlGS:0000000000000000
[  180.692630] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  180.693840] CR2: 00007ffff7ffe000 CR3: 0000000044cb8000 CR4: 00000000000006f0
[  180.694755] DR0: ffffffffb6608260 DR1: ffffffffb6608261 DR2: ffffffffb6608263
[  180.697037] DR3: ffffffffb6608265 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  180.697350] Call Trace:
[  180.698095]  <TASK>
[  180.698857]  drm_test_framebuffer_free+0x1ac/0x610
[  180.699317]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  180.700258]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  180.701223]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  180.701975]  ? __drmm_add_action_or_reset+0x22/0x50
[  180.702622]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  180.703193]  kunit_try_run_case+0x1a6/0x480
[  180.703586]  ? __pfx_kunit_try_run_case+0x10/0x10
[  180.704080]  ? _raw_spin_lock_irqsave+0xa2/0x110
[  180.704615]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  180.705166]  ? __kthread_parkme+0x82/0x160
[  180.705735]  ? preempt_count_sub+0x50/0x80
[  180.706287]  ? __pfx_kunit_try_run_case+0x10/0x10
[  180.707006]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  180.707683]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  180.708121]  kthread+0x324/0x6e0
[  180.708326]  ? trace_preempt_on+0x20/0xc0
[  180.709577]  ? __pfx_kthread+0x10/0x10
[  180.709998]  ? _raw_spin_unlock_irq+0x47/0x80
[  180.710285]  ? calculate_sigpending+0x7b/0xa0
[  180.711080]  ? __pfx_kthread+0x10/0x10
[  180.711679]  ret_from_fork+0x41/0x80
[  180.711974]  ? __pfx_kthread+0x10/0x10
[  180.712453]  ret_from_fork_asm+0x1a/0x30
[  180.713077]  </TASK>
[  180.713264] ---[ end trace 0000000000000000 ]---