------------[ cut here ]------------
[  217.479403] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  217.481159] WARNING: CPU: 0 PID: 2046 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x136/0x1b0
[  217.483087] Modules linked in:
[  217.483847] CPU: 0 UID: 0 PID: 2046 Comm: kunit_try_catch Tainted: G    B D          N 6.13.0-rc1-next-20241204 #1
[  217.485086] Tainted: [B]=BAD_PAGE, [D]=DIE, [N]=TEST
[  217.485819] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  217.487067] RIP: 0010:drm_framebuffer_free+0x136/0x1b0
[  217.487868] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 14 49 80 00 48 c7 c1 80 26 5b b9 4c 89 fa 48 c7 c7 e0 26 5b b9 48 89 c6 e8 eb 08 87 fe 90 <0f> 0b 90 90 e9 25 ff ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 ea
[  217.489669] RSP: 0000:ffff88810418fbd8 EFLAGS: 00010282
[  217.490589] RAX: 0000000000000000 RBX: ffff88810418fcb0 RCX: 1ffffffff7464254
[  217.491313] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  217.492414] RBP: ffff88810418fc00 R08: 0000000000000000 R09: fffffbfff7464254
[  217.493106] R10: 0000000000000003 R11: 0000000000026ba0 R12: ffff88810418fc88
[  217.493909] R13: ffff888102fa0000 R14: ffff888105972000 R15: ffff888102fd3780
[  217.494736] FS:  0000000000000000(0000) GS:ffff888154a00000(0000) knlGS:0000000000000000
[  217.495665] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  217.496246] CR2: 00007ffff7ffe000 CR3: 0000000175ab8000 CR4: 00000000000006f0
[  217.497009] DR0: ffffffffbb5ed160 DR1: ffffffffbb5ed161 DR2: ffffffffbb5ed162
[  217.497936] DR3: ffffffffbb5ed163 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  217.498770] Call Trace:
[  217.499131]  <TASK>
[  217.499468]  ? show_regs+0x68/0x80
[  217.500111]  ? __warn+0xd5/0x260
[  217.500855]  ? drm_framebuffer_free+0x136/0x1b0
[  217.501583]  ? report_bug+0x278/0x2e0
[  217.502144]  ? drm_framebuffer_free+0x137/0x1b0
[  217.503157]  ? handle_bug+0x5c/0xb0
[  217.503958]  ? exc_invalid_op+0x1c/0x50
[  217.505049]  ? asm_exc_invalid_op+0x1f/0x30
[  217.505398]  ? drm_framebuffer_free+0x136/0x1b0
[  217.506579]  ? drm_framebuffer_free+0x135/0x1b0
[  217.507496]  drm_test_framebuffer_free+0x1ac/0x610
[  217.508066]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  217.509144]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  217.509759]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  217.510501]  ? __drmm_add_action_or_reset+0x22/0x50
[  217.511578]  ? __schedule+0xc3e/0x2790
[  217.511988]  ? __pfx_read_tsc+0x10/0x10
[  217.512408]  ? ktime_get_ts64+0x86/0x230
[  217.513496]  kunit_try_run_case+0x1b3/0x490
[  217.514018]  ? __pfx_kunit_try_run_case+0x10/0x10
[  217.514386]  ? _raw_spin_lock_irqsave+0xa2/0x110
[  217.515550]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  217.515797]  ? __kthread_parkme+0x82/0x160
[  217.516031]  ? preempt_count_sub+0x50/0x80
[  217.516371]  ? __pfx_kunit_try_run_case+0x10/0x10
[  217.516763]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  217.517614]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  217.518887]  kthread+0x257/0x310
[  217.519605]  ? __pfx_kthread+0x10/0x10
[  217.520110]  ret_from_fork+0x41/0x80
[  217.520615]  ? __pfx_kthread+0x10/0x10
[  217.521047]  ret_from_fork_asm+0x1a/0x30
[  217.521637]  </TASK>
[  217.522196] ---[ end trace 0000000000000000 ]---