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[  137.654796] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  137.654927] WARNING: CPU: 1 PID: 2546 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x13f/0x1c0
[  137.655989] Modules linked in:
[  137.656228] CPU: 1 UID: 0 PID: 2546 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[  137.656876] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  137.657151] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  137.657979] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  137.658433] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 cb 3e 87 00 48 c7 c1 40 29 9d 9e 4c 89 fa 48 c7 c7 a0 29 9d 9e 48 89 c6 e8 62 e0 7e fe 90 <0f> 0b 90 90 e9 1c ff ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 ea
[  137.659384] RSP: 0000:ffff888103a0fb68 EFLAGS: 00010282
[  137.659732] RAX: 0000000000000000 RBX: ffff888103a0fc40 RCX: 1ffffffff3ee4c80
[  137.660004] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  137.660346] RBP: ffff888103a0fb90 R08: 0000000000000000 R09: fffffbfff3ee4c80
[  137.660866] R10: 0000000000000003 R11: 0000000000037538 R12: ffff888103a0fc18
[  137.661381] R13: ffff8881037ec800 R14: ffff888107e0e000 R15: ffff888105454700
[  137.661788] FS:  0000000000000000(0000) GS:ffff8881ba774000(0000) knlGS:0000000000000000
[  137.662194] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  137.662573] CR2: 00007ffff7ffe000 CR3: 00000000218bc000 CR4: 00000000000006f0
[  137.662981] DR0: ffffffffa0a50444 DR1: ffffffffa0a50449 DR2: ffffffffa0a5044a
[  137.663486] DR3: ffffffffa0a5044b DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  137.663865] Call Trace:
[  137.664211]  <TASK>
[  137.664550]  drm_test_framebuffer_free+0x1ab/0x610
[  137.665450]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  137.665964]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  137.666700]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  137.667246]  ? __drmm_add_action_or_reset+0x22/0x50
[  137.667759]  ? __schedule+0x10cc/0x2b60
[  137.668134]  ? __pfx_read_tsc+0x10/0x10
[  137.668283]  ? ktime_get_ts64+0x86/0x230
[  137.668739]  kunit_try_run_case+0x1a5/0x480
[  137.669146]  ? __pfx_kunit_try_run_case+0x10/0x10
[  137.669537]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  137.669701]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  137.669864]  ? __kthread_parkme+0x82/0x180
[  137.670008]  ? preempt_count_sub+0x50/0x80
[  137.670190]  ? __pfx_kunit_try_run_case+0x10/0x10
[  137.670347]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  137.670777]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  137.671047]  kthread+0x337/0x6f0
[  137.671270]  ? trace_preempt_on+0x20/0xc0
[  137.671420]  ? __pfx_kthread+0x10/0x10
[  137.671669]  ? _raw_spin_unlock_irq+0x47/0x80
[  137.671893]  ? calculate_sigpending+0x7b/0xa0
[  137.672130]  ? __pfx_kthread+0x10/0x10
[  137.672357]  ret_from_fork+0x116/0x1d0
[  137.672599]  ? __pfx_kthread+0x10/0x10
[  137.672742]  ret_from_fork_asm+0x1a/0x30
[  137.672949]  </TASK>
[  137.673073] ---[ end trace 0000000000000000 ]---