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[  228.734628] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  228.735746] WARNING: CPU: 1 PID: 2028 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x136/0x1b0
[  228.738308] Modules linked in:
[  228.738741] CPU: 1 UID: 0 PID: 2028 Comm: kunit_try_catch Tainted: G    B D          N 6.12.0-next-20241120 #1
[  228.739553] Tainted: [B]=BAD_PAGE, [D]=DIE, [N]=TEST
[  228.741340] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  228.742014] RIP: 0010:drm_framebuffer_free+0x136/0x1b0
[  228.742771] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 54 1c 80 00 48 c7 c1 00 09 5b 99 4c 89 fa 48 c7 c7 60 09 5b 99 48 89 c6 e8 9b 98 86 fe 90 <0f> 0b 90 90 e9 25 ff ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 ea
[  228.744214] RSP: 0000:ffff8881047ffbd8 EFLAGS: 00010282
[  228.744912] RAX: 0000000000000000 RBX: ffff8881047ffcb0 RCX: 1ffffffff34642ec
[  228.745718] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  228.746577] RBP: ffff8881047ffc00 R08: 0000000000000000 R09: fffffbfff34642ec
[  228.747482] R10: 0000000000000003 R11: 0000000000027eb8 R12: ffff8881047ffc88
[  228.748364] R13: ffff888104af3000 R14: ffff888104320000 R15: ffff888104713480
[  228.749056] FS:  0000000000000000(0000) GS:ffff88815b100000(0000) knlGS:0000000000000000
[  228.749825] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  228.750496] CR2: 00007ffff7ffe000 CR3: 0000000051cb8000 CR4: 00000000000006f0
[  228.751522] DR0: ffffffff9b5ea1a4 DR1: ffffffff9b5ea1a9 DR2: ffffffff9b5ea1aa
[  228.753272] DR3: ffffffff9b5ea1ab DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  228.753941] Call Trace:
[  228.754355]  <TASK>
[  228.754563]  ? show_regs+0x68/0x80
[  228.755082]  ? __warn+0xd5/0x260
[  228.755419]  ? drm_framebuffer_free+0x136/0x1b0
[  228.756438]  ? report_bug+0x278/0x2e0
[  228.757310]  ? handle_bug+0x5c/0xb0
[  228.758212]  ? exc_invalid_op+0x1c/0x50
[  228.758874]  ? asm_exc_invalid_op+0x1f/0x30
[  228.759521]  ? drm_framebuffer_free+0x136/0x1b0
[  228.760001]  ? drm_framebuffer_free+0x135/0x1b0
[  228.760459]  drm_test_framebuffer_free+0x1ac/0x610
[  228.761268]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  228.762011]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  228.762826]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  228.763329]  ? __drmm_add_action_or_reset+0x22/0x50
[  228.764289]  ? __schedule+0xc3e/0x2790
[  228.764835]  ? __pfx_read_tsc+0x10/0x10
[  228.765851]  ? ktime_get_ts64+0x84/0x230
[  228.766494]  kunit_try_run_case+0x1b3/0x490
[  228.767466]  ? __pfx_kunit_try_run_case+0x10/0x10
[  228.767992]  ? _raw_spin_lock_irqsave+0xa2/0x110
[  228.768947]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  228.769750]  ? __kthread_parkme+0x82/0x160
[  228.770523]  ? preempt_count_sub+0x50/0x80
[  228.771053]  ? __pfx_kunit_try_run_case+0x10/0x10
[  228.771539]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  228.771942]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  228.772394]  kthread+0x257/0x310
[  228.772649]  ? __pfx_kthread+0x10/0x10
[  228.773651]  ret_from_fork+0x41/0x80
[  228.774512]  ? __pfx_kthread+0x10/0x10
[  228.775162]  ret_from_fork_asm+0x1a/0x30
[  228.777026]  </TASK>
[  228.777340] ---[ end trace 0000000000000000 ]---