------------[ cut here ]------------
[  193.842189] WARNING: drivers/gpu/drm/drm_rect.c:137 at drm_rect_calc_hscale+0x125/0x190, CPU#0: kunit_try_catch/2931
[  193.842824] Modules linked in:
[  193.843032] CPU: 0 UID: 0 PID: 2931 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc6-next-20250717 #1 PREEMPT(voluntary) 
[  193.844668] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  193.844931] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  193.845709] RIP: 0010:drm_rect_calc_hscale+0x125/0x190
[  193.846235] Code: 7f 43 41 39 ce 7c 3e 48 83 c4 08 89 c8 5b 41 5c 41 5d 41 5e 5d c3 cc cc cc cc 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
[  193.847134] RSP: 0000:ffff8881048afc78 EFLAGS: 00010286
[  193.847692] RAX: 00000000ffff0000 RBX: 00000000ffff0000 RCX: 0000000000010000
[  193.848432] RDX: 0000000000000003 RSI: 0000000000000000 RDI: ffffffff96062be0
[  193.849122] RBP: ffff8881048afca0 R08: 0000000000000000 R09: ffffed10218cf2e0
[  193.849630] R10: ffff88810c679707 R11: 0000000000000000 R12: ffffffff96062bc8
[  193.849846] R13: 0000000000000000 R14: 000000007fffffff R15: ffff8881048afd38
[  193.850056] FS:  0000000000000000(0000) GS:ffff8881c3013000(0000) knlGS:0000000000000000
[  193.850299] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  193.850545] CR2: 00007ffff7ffe000 CR3: 0000000156ebc000 CR4: 00000000000006f0
[  193.851160] DR0: ffffffff980b3540 DR1: ffffffff980b3541 DR2: ffffffff980b3543
[  193.851727] DR3: ffffffff980b3545 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  193.852613] Call Trace:
[  193.853256]  <TASK>
[  193.854993]  drm_test_rect_calc_hscale+0x108/0x270
[  193.855331]  ? __pfx_drm_test_rect_calc_hscale+0x10/0x10
[  193.855509]  ? __schedule+0x10c6/0x2b60
[  193.855648]  ? __pfx_read_tsc+0x10/0x10
[  193.855782]  ? ktime_get_ts64+0x86/0x230
[  193.855920]  kunit_try_run_case+0x1a5/0x480
[  193.856063]  ? __pfx_kunit_try_run_case+0x10/0x10
[  193.857740]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  193.858590]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  193.859997]  ? __kthread_parkme+0x82/0x180
[  193.860651]  ? preempt_count_sub+0x50/0x80
[  193.861061]  ? __pfx_kunit_try_run_case+0x10/0x10
[  193.861690]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  193.862219]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  193.862536]  kthread+0x337/0x6f0
[  193.862663]  ? trace_preempt_on+0x20/0xc0
[  193.862804]  ? __pfx_kthread+0x10/0x10
[  193.862933]  ? _raw_spin_unlock_irq+0x47/0x80
[  193.863078]  ? calculate_sigpending+0x7b/0xa0
[  193.863456]  ? __pfx_kthread+0x10/0x10
[  193.863629]  ret_from_fork+0x116/0x1d0
[  193.863818]  ? __pfx_kthread+0x10/0x10
[  193.863952]  ret_from_fork_asm+0x1a/0x30
[  193.864149]  </TASK>
[  193.864314] ---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
[  193.869877] WARNING: drivers/gpu/drm/drm_rect.c:137 at drm_rect_calc_hscale+0x125/0x190, CPU#1: kunit_try_catch/2933
[  193.871387] Modules linked in:
[  193.871671] CPU: 1 UID: 0 PID: 2933 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc6-next-20250717 #1 PREEMPT(voluntary) 
[  193.872839] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  193.873396] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  193.873660] RIP: 0010:drm_rect_calc_hscale+0x125/0x190
[  193.873832] Code: 7f 43 41 39 ce 7c 3e 48 83 c4 08 89 c8 5b 41 5c 41 5d 41 5e 5d c3 cc cc cc cc 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
[  193.874731] RSP: 0000:ffff88810a97fc78 EFLAGS: 00010286
[  193.874939] RAX: 0000000000010000 RBX: 00000000ffff0000 RCX: 00000000ffff0000
[  193.875152] RDX: 0000000000000003 RSI: 0000000000000000 RDI: ffffffff96062c18
[  193.875716] RBP: ffff88810a97fca0 R08: 0000000000000000 R09: ffffed10207bc2e0
[  193.876418] R10: ffff888103de1707 R11: 0000000000000000 R12: ffffffff96062c00
[  193.877330] R13: 0000000000000000 R14: 000000007fffffff R15: ffff88810a97fd38
[  193.877822] FS:  0000000000000000(0000) GS:ffff8881c3113000(0000) knlGS:0000000000000000
[  193.878056] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  193.878238] CR2: 00007ffff7ffe000 CR3: 0000000156ebc000 CR4: 00000000000006f0
[  193.878996] DR0: ffffffff980b3544 DR1: ffffffff980b3549 DR2: ffffffff980b354a
[  193.879757] DR3: ffffffff980b354b DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  193.880580] Call Trace:
[  193.880746]  <TASK>
[  193.880972]  drm_test_rect_calc_hscale+0x108/0x270
[  193.881159]  ? __kasan_check_write+0x18/0x20
[  193.881418]  ? __pfx_drm_test_rect_calc_hscale+0x10/0x10
[  193.881993]  ? sysvec_apic_timer_interrupt+0x50/0x90
[  193.882609]  ? trace_hardirqs_on+0x37/0xe0
[  193.883128]  ? __pfx_read_tsc+0x10/0x10
[  193.883521]  ? ktime_get_ts64+0x86/0x230
[  193.883847]  kunit_try_run_case+0x1a5/0x480
[  193.884003]  ? __pfx_kunit_try_run_case+0x10/0x10
[  193.884661]  ? queued_spin_lock_slowpath+0x116/0xb40
[  193.885025]  ? __kthread_parkme+0x82/0x180
[  193.885183]  ? preempt_count_sub+0x50/0x80
[  193.885421]  ? __pfx_kunit_try_run_case+0x10/0x10
[  193.885872]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  193.886485]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  193.886988]  kthread+0x337/0x6f0
[  193.887120]  ? trace_preempt_on+0x20/0xc0
[  193.887304]  ? __pfx_kthread+0x10/0x10
[  193.887762]  ? _raw_spin_unlock_irq+0x47/0x80
[  193.888256]  ? calculate_sigpending+0x7b/0xa0
[  193.888812]  ? __pfx_kthread+0x10/0x10
[  193.889073]  ret_from_fork+0x116/0x1d0
[  193.889431]  ? __pfx_kthread+0x10/0x10
[  193.889572]  ret_from_fork_asm+0x1a/0x30
[  193.889720]  </TASK>
[  193.889806] ---[ end trace 0000000000000000 ]---