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[  220.724259] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  220.725235] WARNING: CPU: 1 PID: 2028 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x136/0x1b0
[  220.727411] Modules linked in:
[  220.727791] CPU: 1 UID: 0 PID: 2028 Comm: kunit_try_catch Tainted: G    B D          N 6.12.0-next-20241127 #1
[  220.728795] Tainted: [B]=BAD_PAGE, [D]=DIE, [N]=TEST
[  220.729523] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  220.730406] RIP: 0010:drm_framebuffer_free+0x136/0x1b0
[  220.731028] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 04 05 80 00 48 c7 c1 80 12 fb b9 4c 89 fa 48 c7 c7 e0 12 fb b9 48 89 c6 e8 cb 76 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
[  220.732555] RSP: 0000:ffff888104d27bd8 EFLAGS: 00010282
[  220.733251] RAX: 0000000000000000 RBX: ffff888104d27cb0 RCX: 1ffffffff75a42ec
[  220.733928] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  220.734545] RBP: ffff888104d27c00 R08: 0000000000000000 R09: fffffbfff75a42ec
[  220.735257] R10: 0000000000000003 R11: 0000000000027520 R12: ffff888104d27c88
[  220.735816] R13: ffff888104c95000 R14: ffff888107e50000 R15: ffff888104c42500
[  220.736550] FS:  0000000000000000(0000) GS:ffff88815b100000(0000) knlGS:0000000000000000
[  220.737162] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  220.738024] CR2: 00007ffff7ffe000 CR3: 00000001598b8000 CR4: 00000000000006f0
[  220.738729] DR0: ffffffffbbfeb1a4 DR1: ffffffffbbfeb1a9 DR2: ffffffffbbfeb1aa
[  220.739484] DR3: ffffffffbbfeb1ab DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  220.740342] Call Trace:
[  220.740696]  <TASK>
[  220.741040]  ? show_regs+0x68/0x80
[  220.741510]  ? __warn+0xd5/0x260
[  220.741781]  ? drm_framebuffer_free+0x136/0x1b0
[  220.742483]  ? report_bug+0x278/0x2e0
[  220.743651]  ? handle_bug+0x5c/0xb0
[  220.744142]  ? exc_invalid_op+0x1c/0x50
[  220.745113]  ? asm_exc_invalid_op+0x1f/0x30
[  220.745706]  ? drm_framebuffer_free+0x136/0x1b0
[  220.746287]  ? drm_framebuffer_free+0x135/0x1b0
[  220.746768]  drm_test_framebuffer_free+0x1ac/0x610
[  220.747324]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  220.747848]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  220.748597]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  220.749422]  ? __drmm_add_action_or_reset+0x22/0x50
[  220.749841]  ? __schedule+0xc3e/0x2790
[  220.750496]  ? __pfx_read_tsc+0x10/0x10
[  220.750952]  ? ktime_get_ts64+0x84/0x230
[  220.751488]  kunit_try_run_case+0x1b3/0x490
[  220.752336]  ? __pfx_kunit_try_run_case+0x10/0x10
[  220.752762]  ? _raw_spin_lock_irqsave+0xa2/0x110
[  220.753464]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  220.754074]  ? __kthread_parkme+0x82/0x160
[  220.754508]  ? preempt_count_sub+0x50/0x80
[  220.755086]  ? __pfx_kunit_try_run_case+0x10/0x10
[  220.755604]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  220.756259]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  220.757211]  kthread+0x257/0x310
[  220.757477]  ? __pfx_kthread+0x10/0x10
[  220.757986]  ret_from_fork+0x41/0x80
[  220.758573]  ? __pfx_kthread+0x10/0x10
[  220.758929]  ret_from_fork_asm+0x1a/0x30
[  220.759338]  </TASK>
[  220.759810] ---[ end trace 0000000000000000 ]---