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[  212.667710] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  212.668616] WARNING: CPU: 1 PID: 2028 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x136/0x1b0
[  212.671106] Modules linked in:
[  212.671730] CPU: 1 UID: 0 PID: 2028 Comm: kunit_try_catch Tainted: G    B D          N 6.12.0-next-20241128 #1
[  212.672706] Tainted: [B]=BAD_PAGE, [D]=DIE, [N]=TEST
[  212.672910] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  212.674441] RIP: 0010:drm_framebuffer_free+0x136/0x1b0
[  212.675673] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 04 05 80 00 48 c7 c1 00 13 3b 93 4c 89 fa 48 c7 c7 60 13 3b 93 48 89 c6 e8 2b 73 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
[  212.677009] RSP: 0000:ffff888106ed7bd8 EFLAGS: 00010282
[  212.677735] RAX: 0000000000000000 RBX: ffff888106ed7cb0 RCX: 1ffffffff28242fc
[  212.678974] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  212.680297] RBP: ffff888106ed7c00 R08: 0000000000000000 R09: fffffbfff28242fc
[  212.680995] R10: 0000000000000003 R11: 00000000000279d8 R12: ffff888106ed7c88
[  212.681910] R13: ffff888106855000 R14: ffff888106b41000 R15: ffff888106c87200
[  212.682709] FS:  0000000000000000(0000) GS:ffff88815b100000(0000) knlGS:0000000000000000
[  212.683956] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  212.685583] CR2: 00007ffff7ffe000 CR3: 000000001a2b8000 CR4: 00000000000006f0
[  212.686616] DR0: ffffffff953eb1a4 DR1: ffffffff953eb1a9 DR2: ffffffff953eb1aa
[  212.687499] DR3: ffffffff953eb1ab DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  212.688514] Call Trace:
[  212.688880]  <TASK>
[  212.689330]  ? show_regs+0x68/0x80
[  212.689970]  ? __warn+0xd5/0x260
[  212.690508]  ? drm_framebuffer_free+0x136/0x1b0
[  212.691910]  ? report_bug+0x278/0x2e0
[  212.692435]  ? handle_bug+0x5c/0xb0
[  212.692864]  ? exc_invalid_op+0x1c/0x50
[  212.693248]  ? asm_exc_invalid_op+0x1f/0x30
[  212.693728]  ? drm_framebuffer_free+0x136/0x1b0
[  212.694141]  ? drm_framebuffer_free+0x135/0x1b0
[  212.695273]  drm_test_framebuffer_free+0x1ac/0x610
[  212.696098]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  212.697021]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  212.697762]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  212.698327]  ? __drmm_add_action_or_reset+0x22/0x50
[  212.699070]  ? __schedule+0xc3e/0x2790
[  212.700370]  ? __pfx_read_tsc+0x10/0x10
[  212.700781]  ? ktime_get_ts64+0x84/0x230
[  212.701222]  kunit_try_run_case+0x1b3/0x490
[  212.702364]  ? __pfx_kunit_try_run_case+0x10/0x10
[  212.702858]  ? _raw_spin_lock_irqsave+0xa2/0x110
[  212.703886]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  212.704741]  ? __kthread_parkme+0x82/0x160
[  212.705584]  ? preempt_count_sub+0x50/0x80
[  212.706029]  ? __pfx_kunit_try_run_case+0x10/0x10
[  212.706582]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  212.707085]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  212.708333]  kthread+0x257/0x310
[  212.708886]  ? __pfx_kthread+0x10/0x10
[  212.709711]  ret_from_fork+0x41/0x80
[  212.710180]  ? __pfx_kthread+0x10/0x10
[  212.710682]  ret_from_fork_asm+0x1a/0x30
[  212.711503]  </TASK>
[  212.711797] ---[ end trace 0000000000000000 ]---