------------[ cut here ]------------
[  145.070240] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  145.070367] WARNING: CPU: 1 PID: 2545 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x13f/0x1c0
[  145.071004] Modules linked in:
[  145.071178] CPU: 1 UID: 0 PID: 2545 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc7 #1 PREEMPT(voluntary) 
[  145.072831] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  145.073871] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  145.074589] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  145.074964] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 2b 44 87 00 48 c7 c1 00 3a 9d 91 4c 89 fa 48 c7 c7 60 3a 9d 91 48 89 c6 e8 32 ce 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
[  145.075897] RSP: 0000:ffff888102db7b68 EFLAGS: 00010282
[  145.076277] RAX: 0000000000000000 RBX: ffff888102db7c40 RCX: 1ffffffff24e4cf0
[  145.076764] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  145.077091] RBP: ffff888102db7b90 R08: 0000000000000000 R09: fffffbfff24e4cf0
[  145.077579] R10: 0000000000000003 R11: 0000000000036d18 R12: ffff888102db7c18
[  145.078006] R13: ffff88810306f000 R14: ffff888102d49000 R15: ffff888106f88280
[  145.078318] FS:  0000000000000000(0000) GS:ffff8881c7772000(0000) knlGS:0000000000000000
[  145.078929] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  145.079347] CR2: ffffffffffffffff CR3: 00000001596bc000 CR4: 00000000000006f0
[  145.079747] DR0: ffffffff93a52440 DR1: ffffffff93a52441 DR2: ffffffff93a52443
[  145.080180] DR3: ffffffff93a52445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  145.080568] Call Trace:
[  145.080707]  <TASK>
[  145.080854]  drm_test_framebuffer_free+0x1ab/0x610
[  145.081113]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  145.081745]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  145.082038]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  145.082700]  ? __drmm_add_action_or_reset+0x22/0x50
[  145.082907]  ? __schedule+0x10c6/0x2b60
[  145.083333]  ? __pfx_read_tsc+0x10/0x10
[  145.083657]  ? ktime_get_ts64+0x86/0x230
[  145.083932]  kunit_try_run_case+0x1a5/0x480
[  145.084131]  ? __pfx_kunit_try_run_case+0x10/0x10
[  145.084617]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  145.084834]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  145.085072]  ? __kthread_parkme+0x82/0x180
[  145.085477]  ? preempt_count_sub+0x50/0x80
[  145.085815]  ? __pfx_kunit_try_run_case+0x10/0x10
[  145.086160]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  145.086635]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  145.086893]  kthread+0x337/0x6f0
[  145.087061]  ? trace_preempt_on+0x20/0xc0
[  145.087449]  ? __pfx_kthread+0x10/0x10
[  145.087614]  ? _raw_spin_unlock_irq+0x47/0x80
[  145.087831]  ? calculate_sigpending+0x7b/0xa0
[  145.088063]  ? __pfx_kthread+0x10/0x10
[  145.088232]  ret_from_fork+0x116/0x1d0
[  145.088896]  ? __pfx_kthread+0x10/0x10
[  145.089080]  ret_from_fork_asm+0x1a/0x30
[  145.089563]  </TASK>
[  145.089837] ---[ end trace 0000000000000000 ]---