------------[ cut here ]------------
[  208.543828] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  208.544186] WARNING: CPU: 1 PID: 2533 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x163/0x1e0
[  208.545885] Modules linked in:
[  208.546382] CPU: 1 UID: 0 PID: 2533 Comm: kunit_try_catch Tainted: G    B D W        N  6.14.0-rc7-next-20250319 #1 PREEMPT(voluntary) 
[  208.547362] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  208.548031] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  208.548720] RIP: 0010:drm_framebuffer_free+0x163/0x1e0
[  208.549412] Code: 48 c7 c1 00 60 40 b4 4c 89 fa 48 c7 c7 60 60 40 b4 48 89 c6 e8 9e b2 7f fe 90 48 c7 c7 20 6d 40 b4 e8 f1 bc 99 ff 84 c0 75 02 <0f> 0b 90 90 e9 f8 fe ff ff 45 31 ed eb 98 48 b8 00 00 00 00 00 fc
[  208.550828] RSP: 0000:ffff888104a57b68 EFLAGS: 00010246
[  208.551650] RAX: 0000000000000000 RBX: ffff888104a57c40 RCX: 1ffffffff6a2697c
[  208.552863] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffb4406d20
[  208.553353] RBP: ffff888104a57b90 R08: 0000000000000000 R09: fffffbfff6a2697c
[  208.554065] R10: 0000000000000003 R11: 0000000000034350 R12: ffff888104a57c18
[  208.554727] R13: ffff8881044e5800 R14: ffff888107cde000 R15: ffff888104368c00
[  208.555389] FS:  0000000000000000(0000) GS:ffff8881a4c85000(0000) knlGS:0000000000000000
[  208.556295] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  208.557159] CR2: 00007ffff7ffe000 CR3: 0000000039ec4000 CR4: 00000000000006f0
[  208.557537] DR0: ffffffffb653e460 DR1: ffffffffb653e461 DR2: ffffffffb653e463
[  208.558267] DR3: ffffffffb653e465 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  208.559160] Call Trace:
[  208.559433]  <TASK>
[  208.559960]  ? show_regs+0x68/0x80
[  208.560275]  ? __warn+0xd5/0x260
[  208.560846]  ? drm_framebuffer_free+0x163/0x1e0
[  208.561379]  ? __report_bug+0x29e/0x4f0
[  208.562004]  ? __pfx___report_bug+0x10/0x10
[  208.562359]  ? __kasan_check_write+0x18/0x20
[  208.563243]  ? __wake_up_klogd.part.0+0x50/0x80
[  208.563852]  ? vprintk_emit+0x1a6/0x480
[  208.564215]  ? __pfx_vprintk_emit+0x10/0x10
[  208.564524]  ? drm_framebuffer_free+0x163/0x1e0
[  208.565182]  ? drm_framebuffer_free+0x163/0x1e0
[  208.565674]  ? report_bug+0x62/0xd0
[  208.566361]  ? drm_framebuffer_free+0x163/0x1e0
[  208.566765]  ? handle_bug+0x173/0x210
[  208.567592]  ? exc_invalid_op+0x1c/0x50
[  208.567986]  ? asm_exc_invalid_op+0x1f/0x30
[  208.568528]  ? drm_framebuffer_free+0x163/0x1e0
[  208.569224]  ? drm_framebuffer_free+0x15f/0x1e0
[  208.569807]  drm_test_framebuffer_free+0x1ab/0x610
[  208.570251]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  208.571087]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  208.571481]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  208.572232]  ? __drmm_add_action_or_reset+0x22/0x50
[  208.572673]  ? __schedule+0xd46/0x29c0
[  208.573140]  ? __pfx_read_tsc+0x10/0x10
[  208.573797]  ? ktime_get_ts64+0x86/0x240
[  208.574288]  kunit_try_run_case+0x1b2/0x490
[  208.574987]  ? __pfx_kunit_try_run_case+0x10/0x10
[  208.575357]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  208.575718]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  208.576428]  ? __kthread_parkme+0x82/0x160
[  208.577110]  ? preempt_count_sub+0x50/0x80
[  208.577519]  ? __pfx_kunit_try_run_case+0x10/0x10
[  208.578200]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  208.578658]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  208.579527]  kthread+0x323/0x710
[  208.580160]  ? trace_preempt_on+0x20/0xc0
[  208.580494]  ? __pfx_kthread+0x10/0x10
[  208.581048]  ? _raw_spin_unlock_irq+0x47/0x80
[  208.581533]  ? calculate_sigpending+0x7b/0xa0
[  208.582178]  ? __pfx_kthread+0x10/0x10
[  208.582478]  ret_from_fork+0x41/0x80
[  208.582898]  ? __pfx_kthread+0x10/0x10
[  208.583518]  ret_from_fork_asm+0x1a/0x30
[  208.584280]  </TASK>
[  208.584611] ---[ end trace 0000000000000000 ]---