------------[ cut here ]------------
[  334.418618] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  334.420513] WARNING: CPU: 1 PID: 2108 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x136/0x1b0
[  334.422738] Modules linked in:
[  334.423781] CPU: 1 UID: 0 PID: 2108 Comm: kunit_try_catch Tainted: G    B D          N 6.13.0-rc2-next-20241209 #1
[  334.425384] Tainted: [B]=BAD_PAGE, [D]=DIE, [N]=TEST
[  334.425702] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  334.426285] RIP: 0010:drm_framebuffer_free+0x136/0x1b0
[  334.426578] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 44 88 80 00 48 c7 c1 20 e3 9b 9b 4c 89 fa 48 c7 c7 80 e3 9b 9b 48 89 c6 e8 8b f0 84 fe 90 <0f> 0b 90 90 e9 25 ff ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 ea
[  334.428545] RSP: 0000:ffff888103157bd8 EFLAGS: 00010282
[  334.429141] RAX: 0000000000000000 RBX: ffff888103157cb0 RCX: 1ffffffff38e421c
[  334.430123] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  334.431993] RBP: ffff888103157c00 R08: 0000000000000000 R09: fffffbfff38e421c
[  334.433340] R10: 0000000000000003 R11: 0000000000028c88 R12: ffff888103157c88
[  334.434292] R13: ffff888104eaf800 R14: ffff8881024f4000 R15: ffff888104e0ff80
[  334.435271] FS:  0000000000000000(0000) GS:ffff88815b100000(0000) knlGS:0000000000000000
[  334.436558] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  334.437140] CR2: ffffffffffffffff CR3: 0000000034eb8000 CR4: 00000000000006f0
[  334.438622] DR0: ffffffff9d9fe120 DR1: ffffffff9d9fe121 DR2: ffffffff9d9fe123
[  334.439992] DR3: ffffffff9d9fe125 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  334.440737] Call Trace:
[  334.441262]  <TASK>
[  334.441894]  ? show_regs+0x68/0x80
[  334.442385]  ? __warn+0xd5/0x260
[  334.443163]  ? drm_framebuffer_free+0x136/0x1b0
[  334.444670]  ? report_bug+0x278/0x2e0
[  334.445692]  ? handle_bug+0x5c/0xb0
[  334.446220]  ? exc_invalid_op+0x1c/0x50
[  334.447672]  ? asm_exc_invalid_op+0x1f/0x30
[  334.448857]  ? drm_framebuffer_free+0x136/0x1b0
[  334.449748]  ? drm_framebuffer_free+0x135/0x1b0
[  334.450238]  drm_test_framebuffer_free+0x1ac/0x610
[  334.451596]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  334.452292]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  334.452982]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  334.453632]  ? __drmm_add_action_or_reset+0x22/0x50
[  334.455672]  ? __schedule+0xc70/0x27e0
[  334.456588]  ? __pfx_read_tsc+0x10/0x10
[  334.457006]  ? ktime_get_ts64+0x86/0x230
[  334.457573]  kunit_try_run_case+0x1b3/0x490
[  334.458466]  ? __pfx_kunit_try_run_case+0x10/0x10
[  334.458994]  ? _raw_spin_lock_irqsave+0xa2/0x110
[  334.460176]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  334.461240]  ? __kthread_parkme+0x82/0x160
[  334.462347]  ? preempt_count_sub+0x50/0x80
[  334.463483]  ? __pfx_kunit_try_run_case+0x10/0x10
[  334.463982]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  334.465155]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  334.465759]  kthread+0x257/0x310
[  334.466173]  ? __pfx_kthread+0x10/0x10
[  334.466653]  ret_from_fork+0x41/0x80
[  334.467298]  ? __pfx_kthread+0x10/0x10
[  334.468065]  ret_from_fork_asm+0x1a/0x30
[  334.468671]  </TASK>
[  334.469180] ---[ end trace 0000000000000000 ]---