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[  144.488340] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  144.488526] WARNING: CPU: 1 PID: 2546 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x13f/0x1c0
[  144.490425] Modules linked in:
[  144.490659] CPU: 1 UID: 0 PID: 2546 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[  144.491503] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  144.491690] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  144.492678] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  144.493393] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 2b 44 87 00 48 c7 c1 00 3a 7d ab 4c 89 fa 48 c7 c7 60 3a 7d ab 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
[  144.494769] RSP: 0000:ffff8881027cfb68 EFLAGS: 00010282
[  144.495290] RAX: 0000000000000000 RBX: ffff8881027cfc40 RCX: 1ffffffff58a4cf0
[  144.496108] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  144.496701] RBP: ffff8881027cfb90 R08: 0000000000000000 R09: fffffbfff58a4cf0
[  144.497052] R10: 0000000000000003 R11: 0000000000037978 R12: ffff8881027cfc18
[  144.497758] R13: ffff888102b9a800 R14: ffff888102af3000 R15: ffff888109996000
[  144.498480] FS:  0000000000000000(0000) GS:ffff8881ad972000(0000) knlGS:0000000000000000
[  144.498726] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  144.498908] CR2: ffffffffffffffff CR3: 000000002e8bc000 CR4: 00000000000006f0
[  144.499615] DR0: ffffffffad852440 DR1: ffffffffad852441 DR2: ffffffffad852443
[  144.500280] DR3: ffffffffad852445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  144.501301] Call Trace:
[  144.501421]  <TASK>
[  144.501545]  drm_test_framebuffer_free+0x1ab/0x610
[  144.501736]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  144.501920]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  144.502472]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  144.502973]  ? __drmm_add_action_or_reset+0x22/0x50
[  144.503365]  ? __schedule+0x10c6/0x2b60
[  144.503598]  ? __pfx_read_tsc+0x10/0x10
[  144.503930]  ? ktime_get_ts64+0x86/0x230
[  144.504341]  kunit_try_run_case+0x1a5/0x480
[  144.504584]  ? __pfx_kunit_try_run_case+0x10/0x10
[  144.504828]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  144.505063]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  144.505371]  ? __kthread_parkme+0x82/0x180
[  144.505570]  ? preempt_count_sub+0x50/0x80
[  144.505810]  ? __pfx_kunit_try_run_case+0x10/0x10
[  144.506056]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  144.506352]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  144.506694]  kthread+0x337/0x6f0
[  144.506867]  ? trace_preempt_on+0x20/0xc0
[  144.507137]  ? __pfx_kthread+0x10/0x10
[  144.507323]  ? _raw_spin_unlock_irq+0x47/0x80
[  144.507549]  ? calculate_sigpending+0x7b/0xa0
[  144.507733]  ? __pfx_kthread+0x10/0x10
[  144.507953]  ret_from_fork+0x116/0x1d0
[  144.508171]  ? __pfx_kthread+0x10/0x10
[  144.508313]  ret_from_fork_asm+0x1a/0x30
[  144.508701]  </TASK>
[  144.508951] ---[ end trace 0000000000000000 ]---