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[  236.265089] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  236.266491] WARNING: CPU: 1 PID: 2046 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x136/0x1b0
[  236.269475] Modules linked in:
[  236.269908] CPU: 1 UID: 0 PID: 2046 Comm: kunit_try_catch Tainted: G    B D          N 6.13.0-rc1-next-20241205 #1
[  236.271790] Tainted: [B]=BAD_PAGE, [D]=DIE, [N]=TEST
[  236.272481] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  236.274039] RIP: 0010:drm_framebuffer_free+0x136/0x1b0
[  236.274818] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 d4 50 80 00 48 c7 c1 c0 28 bb 8d 4c 89 fa 48 c7 c7 20 29 bb 8d 48 89 c6 e8 cb f5 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
[  236.277310] RSP: 0000:ffff888107b7fbd8 EFLAGS: 00010282
[  236.277901] RAX: 0000000000000000 RBX: ffff888107b7fcb0 RCX: 1ffffffff1d24254
[  236.278737] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  236.279956] RBP: ffff888107b7fc00 R08: 0000000000000000 R09: fffffbfff1d24254
[  236.281278] R10: 0000000000000003 R11: 00000000000250c0 R12: ffff888107b7fc88
[  236.282469] R13: ffff888103ec2000 R14: ffff888103c93000 R15: ffff888103b5e180
[  236.283028] FS:  0000000000000000(0000) GS:ffff88815b100000(0000) knlGS:0000000000000000
[  236.284069] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  236.284592] CR2: 00007ffff7ffe000 CR3: 000000004a8b8000 CR4: 00000000000006f0
[  236.285213] DR0: ffffffff8fbed164 DR1: ffffffff8fbed169 DR2: ffffffff8fbed16a
[  236.286088] DR3: ffffffff8fbed16b DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  236.286696] Call Trace:
[  236.287163]  <TASK>
[  236.287509]  ? show_regs+0x68/0x80
[  236.288126]  ? __warn+0xd5/0x260
[  236.288520]  ? drm_framebuffer_free+0x136/0x1b0
[  236.288959]  ? report_bug+0x278/0x2e0
[  236.289620]  ? handle_bug+0x5c/0xb0
[  236.289940]  ? exc_invalid_op+0x1c/0x50
[  236.290564]  ? asm_exc_invalid_op+0x1f/0x30
[  236.290920]  ? drm_framebuffer_free+0x136/0x1b0
[  236.291610]  ? drm_framebuffer_free+0x135/0x1b0
[  236.292323]  drm_test_framebuffer_free+0x1ac/0x610
[  236.293132]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  236.293672]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  236.294524]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  236.295159]  ? __drmm_add_action_or_reset+0x22/0x50
[  236.295664]  ? __schedule+0xc70/0x27e0
[  236.296229]  ? __pfx_read_tsc+0x10/0x10
[  236.296710]  ? ktime_get_ts64+0x86/0x230
[  236.297241]  kunit_try_run_case+0x1b3/0x490
[  236.297786]  ? __pfx_kunit_try_run_case+0x10/0x10
[  236.298432]  ? _raw_spin_lock_irqsave+0xa2/0x110
[  236.298806]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  236.299443]  ? __kthread_parkme+0x82/0x160
[  236.299863]  ? preempt_count_sub+0x50/0x80
[  236.300349]  ? __pfx_kunit_try_run_case+0x10/0x10
[  236.300934]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  236.301377]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  236.301969]  kthread+0x257/0x310
[  236.302386]  ? __pfx_kthread+0x10/0x10
[  236.302733]  ret_from_fork+0x41/0x80
[  236.303234]  ? __pfx_kthread+0x10/0x10
[  236.303866]  ret_from_fork_asm+0x1a/0x30
[  236.304348]  </TASK>
[  236.304758] ---[ end trace 0000000000000000 ]---