------------[ cut here ]------------
[  169.954673] WARNING: CPU: 0 PID: 2817 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  169.955568] Modules linked in:
[  169.956931] CPU: 0 UID: 0 PID: 2817 Comm: kunit_try_catch Tainted: G    B D W        N  6.15.0-next-20250603 #1 PREEMPT(voluntary) 
[  169.957487] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  169.957817] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  169.958260] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  169.959036] Code: 7f 43 41 39 ce 7c 3e 48 83 c4 08 89 c8 5b 41 5c 41 5d 41 5e 5d e9 90 aa 1e 02 8d 44 08 ff 99 f7 f9 89 c1 85 c0 79 d6 eb de 90 <0f> 0b 90 b9 ea ff ff ff 48 83 c4 08 5b 89 c8 41 5c 41 5d 41 5e 5d
[  169.960049] RSP: 0000:ffff888108f67c78 EFLAGS: 00010286
[  169.960305] RAX: 00000000ffff0000 RBX: 00000000ffff0000 RCX: 0000000000010000
[  169.961242] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffff8d43cb9c
[  169.961534] RBP: ffff888108f67ca0 R08: 0000000000000000 R09: ffffed1020c489e0
[  169.962198] R10: ffff888106244f07 R11: 0000000000000000 R12: ffffffff8d43cb88
[  169.962456] R13: 0000000000000000 R14: 000000007fffffff R15: ffff888108f67d38
[  169.963181] FS:  0000000000000000(0000) GS:ffff8881cbc5b000(0000) knlGS:0000000000000000
[  169.964237] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  169.964439] CR2: 00007ffff7ffe000 CR3: 00000000780bc000 CR4: 00000000000006f0
[  169.964652] DR0: ffffffff8f469400 DR1: ffffffff8f469401 DR2: ffffffff8f469402
[  169.965150] DR3: ffffffff8f469403 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  169.965538] Call Trace:
[  169.965678]  <TASK>
[  169.965860]  drm_test_rect_calc_vscale+0x108/0x270
[  169.966242]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  169.967461]  ? __schedule+0x10cc/0x2b60
[  169.967878]  ? __pfx_read_tsc+0x10/0x10
[  169.968550]  ? ktime_get_ts64+0x86/0x230
[  169.968993]  kunit_try_run_case+0x1a5/0x480
[  169.969206]  ? __pfx_kunit_try_run_case+0x10/0x10
[  169.969564]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  169.970173]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  169.970616]  ? __kthread_parkme+0x82/0x180
[  169.971111]  ? preempt_count_sub+0x50/0x80
[  169.971464]  ? __pfx_kunit_try_run_case+0x10/0x10
[  169.972052]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  169.972356]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  169.972924]  kthread+0x337/0x6f0
[  169.973365]  ? trace_preempt_on+0x20/0xc0
[  169.973641]  ? __pfx_kthread+0x10/0x10
[  169.974131]  ? _raw_spin_unlock_irq+0x47/0x80
[  169.974906]  ? calculate_sigpending+0x7b/0xa0
[  169.975246]  ? __pfx_kthread+0x10/0x10
[  169.975620]  ret_from_fork+0x116/0x1d0
[  169.976098]  ? __pfx_kthread+0x10/0x10
[  169.976490]  ret_from_fork_asm+0x1a/0x30
[  169.976949]  </TASK>
[  169.977084] ---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
[  169.983443] WARNING: CPU: 0 PID: 2819 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  169.984328] Modules linked in:
[  169.984633] CPU: 0 UID: 0 PID: 2819 Comm: kunit_try_catch Tainted: G    B D W        N  6.15.0-next-20250603 #1 PREEMPT(voluntary) 
[  169.985501] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  169.985872] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  169.986386] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  169.986919] Code: 7f 43 41 39 ce 7c 3e 48 83 c4 08 89 c8 5b 41 5c 41 5d 41 5e 5d e9 90 aa 1e 02 8d 44 08 ff 99 f7 f9 89 c1 85 c0 79 d6 eb de 90 <0f> 0b 90 b9 ea ff ff ff 48 83 c4 08 5b 89 c8 41 5c 41 5d 41 5e 5d
[  169.987961] RSP: 0000:ffff888108f47c78 EFLAGS: 00010286
[  169.988350] RAX: 0000000000010000 RBX: 00000000ffff0000 RCX: 00000000ffff0000
[  169.988814] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffff8d43cbd4
[  169.989304] RBP: ffff888108f47ca0 R08: 0000000000000000 R09: ffffed1020f49800
[  169.989665] R10: ffff888107a4c007 R11: 0000000000000000 R12: ffffffff8d43cbc0
[  169.990266] R13: 0000000000000000 R14: 000000007fffffff R15: ffff888108f47d38
[  169.990498] FS:  0000000000000000(0000) GS:ffff8881cbc5b000(0000) knlGS:0000000000000000
[  169.991635] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  169.991936] CR2: 00007ffff7ffe000 CR3: 00000000780bc000 CR4: 00000000000006f0
[  169.992379] DR0: ffffffff8f469400 DR1: ffffffff8f469401 DR2: ffffffff8f469402
[  169.992573] DR3: ffffffff8f469403 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  169.992928] Call Trace:
[  169.993199]  <TASK>
[  169.993469]  drm_test_rect_calc_vscale+0x108/0x270
[  169.993923]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  169.994468]  ? __schedule+0x10cc/0x2b60
[  169.994651]  ? __pfx_read_tsc+0x10/0x10
[  169.995206]  ? ktime_get_ts64+0x86/0x230
[  169.996190]  kunit_try_run_case+0x1a5/0x480
[  169.996486]  ? __pfx_kunit_try_run_case+0x10/0x10
[  169.996930]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  169.997267]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  169.997513]  ? __kthread_parkme+0x82/0x180
[  169.997979]  ? preempt_count_sub+0x50/0x80
[  169.998205]  ? __pfx_kunit_try_run_case+0x10/0x10
[  169.998394]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  169.998593]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  169.998793]  kthread+0x337/0x6f0
[  169.999597]  ? trace_preempt_on+0x20/0xc0
[  170.000193]  ? __pfx_kthread+0x10/0x10
[  170.000415]  ? _raw_spin_unlock_irq+0x47/0x80
[  170.000603]  ? calculate_sigpending+0x7b/0xa0
[  170.000784]  ? __pfx_kthread+0x10/0x10
[  170.000939]  ret_from_fork+0x116/0x1d0
[  170.001098]  ? __pfx_kthread+0x10/0x10
[  170.001257]  ret_from_fork_asm+0x1a/0x30
[  170.001444]  </TASK>
[  170.001566] ---[ end trace 0000000000000000 ]---