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[  193.144833] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  193.146256] WARNING: CPU: 1 PID: 2047 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x136/0x1b0
[  193.148314] Modules linked in:
[  193.148844] CPU: 1 UID: 0 PID: 2047 Comm: kunit_try_catch Tainted: G    B D          N 6.13.0-rc1-next-20241203 #1
[  193.149543] Tainted: [B]=BAD_PAGE, [D]=DIE, [N]=TEST
[  193.149996] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  193.150900] RIP: 0010:drm_framebuffer_free+0x136/0x1b0
[  193.151380] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 74 48 80 00 48 c7 c1 80 26 1b b1 4c 89 fa 48 c7 c7 e0 26 1b b1 48 89 c6 e8 eb 08 87 fe 90 <0f> 0b 90 90 e9 25 ff ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 ea
[  193.152807] RSP: 0000:ffff8881077a7bd8 EFLAGS: 00010282
[  193.153367] RAX: 0000000000000000 RBX: ffff8881077a7cb0 RCX: 1ffffffff63e4254
[  193.154173] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  193.154915] RBP: ffff8881077a7c00 R08: 0000000000000000 R09: fffffbfff63e4254
[  193.155501] R10: 0000000000000003 R11: 0000000000025760 R12: ffff8881077a7c88
[  193.156093] R13: ffff8881074fe000 R14: ffff888106d59000 R15: ffff888107691380
[  193.156883] FS:  0000000000000000(0000) GS:ffff88815b100000(0000) knlGS:0000000000000000
[  193.157604] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  193.158002] CR2: 00007ffff7ffe000 CR3: 00000001420b8000 CR4: 00000000000006f0
[  193.158819] DR0: ffffffffb31ed160 DR1: ffffffffb31ed161 DR2: ffffffffb31ed163
[  193.159488] DR3: ffffffffb31ed165 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  193.160150] Call Trace:
[  193.160493]  <TASK>
[  193.160952]  ? show_regs+0x68/0x80
[  193.161420]  ? __warn+0xd5/0x260
[  193.161998]  ? drm_framebuffer_free+0x136/0x1b0
[  193.162572]  ? report_bug+0x278/0x2e0
[  193.163117]  ? drm_framebuffer_free+0x136/0x1b0
[  193.163809]  ? handle_bug+0x5c/0xb0
[  193.164279]  ? exc_invalid_op+0x1c/0x50
[  193.164870]  ? asm_exc_invalid_op+0x1f/0x30
[  193.165417]  ? drm_framebuffer_free+0x136/0x1b0
[  193.166082]  ? drm_framebuffer_free+0x135/0x1b0
[  193.166740]  drm_test_framebuffer_free+0x1ac/0x610
[  193.167180]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  193.167956]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  193.168593]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  193.169210]  ? __drmm_add_action_or_reset+0x22/0x50
[  193.170062]  ? __schedule+0xc3e/0x2790
[  193.170406]  ? __pfx_read_tsc+0x10/0x10
[  193.171007]  ? ktime_get_ts64+0x86/0x230
[  193.171499]  kunit_try_run_case+0x1b3/0x490
[  193.172084]  ? __pfx_kunit_try_run_case+0x10/0x10
[  193.172373]  ? _raw_spin_lock_irqsave+0xa2/0x110
[  193.172759]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  193.173419]  ? __kthread_parkme+0x82/0x160
[  193.173914]  ? preempt_count_sub+0x50/0x80
[  193.174470]  ? __pfx_kunit_try_run_case+0x10/0x10
[  193.175096]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  193.175787]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  193.176397]  kthread+0x257/0x310
[  193.177006]  ? __pfx_kthread+0x10/0x10
[  193.177455]  ret_from_fork+0x41/0x80
[  193.178132]  ? __pfx_kthread+0x10/0x10
[  193.178743]  ret_from_fork_asm+0x1a/0x30
[  193.179238]  </TASK>
[  193.180084] ---[ end trace 0000000000000000 ]---