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[  140.685568] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  140.685694] WARNING: CPU: 1 PID: 2547 at drivers/gpu/drm/drm_framebuffer.c:832 drm_framebuffer_free+0x13f/0x1c0
[  140.688141] Modules linked in:
[  140.688746] CPU: 1 UID: 0 PID: 2547 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[  140.690067] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  140.690484] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  140.690753] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  140.690948] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 2b 44 87 00 48 c7 c1 c0 38 1d 86 4c 89 fa 48 c7 c7 20 39 1d 86 48 89 c6 e8 f2 dc 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
[  140.691675] RSP: 0000:ffff888101d1fb68 EFLAGS: 00010282
[  140.691880] RAX: 0000000000000000 RBX: ffff888101d1fc40 RCX: 1ffffffff0de4cf0
[  140.692116] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  140.692849] RBP: ffff888101d1fb90 R08: 0000000000000000 R09: fffffbfff0de4cf0
[  140.693442] R10: 0000000000000003 R11: 00000000000379a8 R12: ffff888101d1fc18
[  140.693860] R13: ffff888101d22000 R14: ffff88810229f000 R15: ffff8881047c9000
[  140.694486] FS:  0000000000000000(0000) GS:ffff8881d2f72000(0000) knlGS:0000000000000000
[  140.694867] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  140.695461] CR2: ffffffffffffffff CR3: 00000000542bc000 CR4: 00000000000006f0
[  140.695798] DR0: ffffffff88252444 DR1: ffffffff88252449 DR2: ffffffff8825244a
[  140.696358] DR3: ffffffff8825244b DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  140.696853] Call Trace:
[  140.697302]  <TASK>
[  140.697669]  drm_test_framebuffer_free+0x1ab/0x610
[  140.698273]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  140.698827]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  140.699388]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  140.700112]  ? __drmm_add_action_or_reset+0x22/0x50
[  140.700666]  ? __schedule+0x10cc/0x2b60
[  140.701163]  ? __pfx_read_tsc+0x10/0x10
[  140.701338]  ? ktime_get_ts64+0x86/0x230
[  140.701484]  kunit_try_run_case+0x1a5/0x480
[  140.701638]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.701816]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  140.701981]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  140.702699]  ? __kthread_parkme+0x82/0x180
[  140.703087]  ? preempt_count_sub+0x50/0x80
[  140.703418]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.703740]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  140.704346]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  140.704625]  kthread+0x337/0x6f0
[  140.704908]  ? trace_preempt_on+0x20/0xc0
[  140.705349]  ? __pfx_kthread+0x10/0x10
[  140.705540]  ? _raw_spin_unlock_irq+0x47/0x80
[  140.705728]  ? calculate_sigpending+0x7b/0xa0
[  140.705941]  ? __pfx_kthread+0x10/0x10
[  140.706451]  ret_from_fork+0x116/0x1d0
[  140.706655]  ? __pfx_kthread+0x10/0x10
[  140.706939]  ret_from_fork_asm+0x1a/0x30
[  140.707287]  </TASK>
[  140.707603] ---[ end trace 0000000000000000 ]---