Hay
Date
July 25, 2025, 3:13 a.m.

Environment
qemu-x86_64

------------[ cut here ]------------
[  193.370614] drm-kunit-mock-device drm_test_framebuffer_free.drm-kunit-mock-device: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[  193.370742] WARNING: drivers/gpu/drm/drm_framebuffer.c:833 at drm_framebuffer_free+0x13f/0x1c0, CPU#0: kunit_try_catch/2731
[  193.372415] Modules linked in:
[  193.372691] CPU: 0 UID: 0 PID: 2731 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc7-next-20250725 #1 PREEMPT(voluntary) 
[  193.373422] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  193.373615] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  193.373904] RIP: 0010:drm_framebuffer_free+0x13f/0x1c0
[  193.374325] Code: 8b 7d 50 4d 85 ff 74 2b 4c 89 ef e8 2b 06 89 00 48 c7 c1 e0 37 c0 b8 4c 89 fa 48 c7 c7 40 38 c0 b8 48 89 c6 e8 92 a1 76 fe 90 <0f> 0b 90 90 e9 1c ff ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 ea
[  193.375141] RSP: 0000:ffff888105d3fb68 EFLAGS: 00010282
[  193.375594] RAX: 0000000000000000 RBX: ffff888105d3fc40 RCX: 1ffffffff7324aac
[  193.375896] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[  193.376373] RBP: ffff888105d3fb90 R08: 0000000000000000 R09: fffffbfff7324aac
[  193.376750] R10: 0000000000000003 R11: 0000000000049af8 R12: ffff888105d3fc18
[  193.377073] R13: ffff888105ddb800 R14: ffff888105e29000 R15: ffff888103f1b580
[  193.377463] FS:  0000000000000000(0000) GS:ffff8881a040d000(0000) knlGS:0000000000000000
[  193.377924] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  193.378233] CR2: 00007ffff7ffe000 CR3: 000000004bcbc000 CR4: 00000000000006f0
[  193.378555] DR0: ffffffffbacb9580 DR1: ffffffffbacb9581 DR2: ffffffffbacb9582
[  193.379056] DR3: ffffffffbacb9583 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  193.379382] Call Trace:
[  193.379512]  <TASK>
[  193.379653]  drm_test_framebuffer_free+0x1ab/0x610
[  193.379973]  ? __pfx_drm_test_framebuffer_free+0x10/0x10
[  193.380350]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  193.380718]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  193.381407]  ? __drmm_add_action_or_reset+0x22/0x50
[  193.381664]  ? __schedule+0x10da/0x2b60
[  193.381994]  ? __pfx_read_tsc+0x10/0x10
[  193.382246]  ? ktime_get_ts64+0x86/0x230
[  193.382444]  kunit_try_run_case+0x1a5/0x480
[  193.382675]  ? __pfx_kunit_try_run_case+0x10/0x10
[  193.383085]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  193.383339]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  193.383588]  ? __kthread_parkme+0x82/0x180
[  193.383799]  ? preempt_count_sub+0x50/0x80
[  193.383992]  ? __pfx_kunit_try_run_case+0x10/0x10
[  193.384345]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  193.384583]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  193.384963]  kthread+0x337/0x6f0
[  193.385164]  ? trace_preempt_on+0x20/0xc0
[  193.385400]  ? __pfx_kthread+0x10/0x10
[  193.385555]  ? _raw_spin_unlock_irq+0x47/0x80
[  193.385765]  ? calculate_sigpending+0x7b/0xa0
[  193.385996]  ? __pfx_kthread+0x10/0x10
[  193.386225]  ret_from_fork+0x116/0x1d0
[  193.386369]  ? __pfx_kthread+0x10/0x10
[  193.386574]  ret_from_fork_asm+0x1a/0x30
[  193.386899]  </TASK>
[  193.387265] ---[ end trace 0000000000000000 ]---