------------[ cut here ]------------
[  177.379528] WARNING: drivers/gpu/drm/drm_rect.c:137 at drm_rect_calc_hscale+0x125/0x190, CPU#0: kunit_try_catch/2802
[  177.380662] Modules linked in:
[  177.380875] CPU: 0 UID: 0 PID: 2802 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc5-next-20250709 #1 PREEMPT(voluntary) 
[  177.381497] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  177.381824] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  177.382242] RIP: 0010:drm_rect_calc_hscale+0x125/0x190
[  177.382636] 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
[  177.383480] RSP: 0000:ffff88810dda7c78 EFLAGS: 00010286
[  177.383749] RAX: 00000000ffff0000 RBX: 00000000ffff0000 RCX: 0000000000010000
[  177.384088] RDX: 0000000000000003 RSI: 0000000000000000 RDI: ffffffff91e55dc0
[  177.384470] RBP: ffff88810dda7ca0 R08: 0000000000000000 R09: ffffed10216aec80
[  177.384926] R10: ffff88810b576407 R11: 0000000000000000 R12: ffffffff91e55da8
[  177.385450] R13: 0000000000000000 R14: 000000007fffffff R15: ffff88810dda7d38
[  177.385813] FS:  0000000000000000(0000) GS:ffff8881c722b000(0000) knlGS:0000000000000000
[  177.386199] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  177.386524] CR2: ffff88815a94a000 CR3: 000000012a2bc000 CR4: 00000000000006f0
[  177.387173] DR0: ffffffff93e9b500 DR1: ffffffff93e9b501 DR2: ffffffff93e9b503
[  177.387544] DR3: ffffffff93e9b505 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  177.387989] Call Trace:
[  177.388105]  <TASK>
[  177.388295]  drm_test_rect_calc_hscale+0x108/0x270
[  177.388521]  ? __pfx_drm_test_rect_calc_hscale+0x10/0x10
[  177.388837]  ? __schedule+0x10cc/0x2b60
[  177.389031]  ? __pfx_read_tsc+0x10/0x10
[  177.389256]  ? ktime_get_ts64+0x86/0x230
[  177.389549]  kunit_try_run_case+0x1a5/0x480
[  177.389832]  ? __pfx_kunit_try_run_case+0x10/0x10
[  177.390193]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  177.390401]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  177.390651]  ? __kthread_parkme+0x82/0x180
[  177.391036]  ? preempt_count_sub+0x50/0x80
[  177.391232]  ? __pfx_kunit_try_run_case+0x10/0x10
[  177.391441]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  177.391689]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  177.392034]  kthread+0x337/0x6f0
[  177.392190]  ? trace_preempt_on+0x20/0xc0
[  177.392360]  ? __pfx_kthread+0x10/0x10
[  177.392548]  ? _raw_spin_unlock_irq+0x47/0x80
[  177.392769]  ? calculate_sigpending+0x7b/0xa0
[  177.392939]  ? __pfx_kthread+0x10/0x10
[  177.393124]  ret_from_fork+0x116/0x1d0
[  177.393370]  ? __pfx_kthread+0x10/0x10
[  177.393560]  ret_from_fork_asm+0x1a/0x30
[  177.393739]  </TASK>
[  177.393826] ---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
[  177.398213] WARNING: drivers/gpu/drm/drm_rect.c:137 at drm_rect_calc_hscale+0x125/0x190, CPU#0: kunit_try_catch/2804
[  177.398633] Modules linked in:
[  177.398828] CPU: 0 UID: 0 PID: 2804 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc5-next-20250709 #1 PREEMPT(voluntary) 
[  177.399407] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  177.399669] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  177.400072] RIP: 0010:drm_rect_calc_hscale+0x125/0x190
[  177.400775] 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
[  177.401630] RSP: 0000:ffff88810df07c78 EFLAGS: 00010286
[  177.401965] RAX: 0000000000010000 RBX: 00000000ffff0000 RCX: 00000000ffff0000
[  177.402311] RDX: 0000000000000003 RSI: 0000000000000000 RDI: ffffffff91e55df8
[  177.402597] RBP: ffff88810df07ca0 R08: 0000000000000000 R09: ffffed10216aeca0
[  177.402892] R10: ffff88810b576507 R11: 0000000000000000 R12: ffffffff91e55de0
[  177.403198] R13: 0000000000000000 R14: 000000007fffffff R15: ffff88810df07d38
[  177.403493] FS:  0000000000000000(0000) GS:ffff8881c722b000(0000) knlGS:0000000000000000
[  177.403850] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  177.404119] CR2: ffff88815a94a000 CR3: 000000012a2bc000 CR4: 00000000000006f0
[  177.404452] DR0: ffffffff93e9b500 DR1: ffffffff93e9b501 DR2: ffffffff93e9b503
[  177.404798] DR3: ffffffff93e9b505 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  177.405207] Call Trace:
[  177.405396]  <TASK>
[  177.405492]  drm_test_rect_calc_hscale+0x108/0x270
[  177.405808]  ? __kasan_check_write+0x18/0x20
[  177.406043]  ? __pfx_drm_test_rect_calc_hscale+0x10/0x10
[  177.406289]  ? __pfx_queued_spin_lock_slowpath+0x10/0x10
[  177.406544]  ? __pfx_read_tsc+0x10/0x10
[  177.406736]  ? ktime_get_ts64+0x86/0x230
[  177.407131]  kunit_try_run_case+0x1a5/0x480
[  177.407375]  ? __pfx_kunit_try_run_case+0x10/0x10
[  177.407613]  ? _raw_spin_lock_irqsave+0xf9/0x100
[  177.407836]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  177.408134]  ? __kthread_parkme+0x82/0x180
[  177.408356]  ? preempt_count_sub+0x50/0x80
[  177.408524]  ? __pfx_kunit_try_run_case+0x10/0x10
[  177.408727]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  177.408941]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  177.409281]  kthread+0x337/0x6f0
[  177.409456]  ? trace_preempt_on+0x20/0xc0
[  177.409630]  ? __pfx_kthread+0x10/0x10
[  177.409819]  ? _raw_spin_unlock_irq+0x47/0x80
[  177.410064]  ? calculate_sigpending+0x7b/0xa0
[  177.410276]  ? __pfx_kthread+0x10/0x10
[  177.410461]  ret_from_fork+0x116/0x1d0
[  177.410657]  ? __pfx_kthread+0x10/0x10
[  177.410789]  ret_from_fork_asm+0x1a/0x30
[  177.410984]  </TASK>
[  177.411294] ---[ end trace 0000000000000000 ]---