------------[ cut here ]------------
[  201.181083] WARNING: drivers/gpu/drm/drm_rect.c:137 at drm_rect_calc_hscale+0x125/0x190, CPU#0: kunit_try_catch/2871
[  201.181953] Modules linked in:
[  201.182605] CPU: 0 UID: 0 PID: 2871 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc4-next-20250704 #1 PREEMPT(voluntary) 
[  201.183670] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  201.183874] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  201.184930] RIP: 0010:drm_rect_calc_hscale+0x125/0x190
[  201.185569] 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
[  201.187408] RSP: 0000:ffff888103eefc78 EFLAGS: 00010286
[  201.187651] RAX: 0000000000010000 RBX: 00000000ffff0000 RCX: 00000000ffff0000
[  201.187879] RDX: 0000000000000003 RSI: 0000000000000000 RDI: ffffffffac25eb78
[  201.188109] RBP: ffff888103eefca0 R08: 0000000000000000 R09: ffffed1020e66320
[  201.188340] R10: ffff888107331907 R11: 0000000000000000 R12: ffffffffac25eb60
[  201.188578] R13: 0000000000000000 R14: 000000007fffffff R15: ffff888103eefd38
[  201.188813] FS:  0000000000000000(0000) GS:ffff8881ace24000(0000) knlGS:0000000000000000
[  201.189064] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  201.189251] CR2: 00007ffff7ffe000 CR3: 0000000131ebc000 CR4: 00000000000006f0
[  201.189658] DR0: ffffffffae2a2480 DR1: ffffffffae2a2481 DR2: ffffffffae2a2483
[  201.190355] DR3: ffffffffae2a2485 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  201.191058] Call Trace:
[  201.191477]  <TASK>
[  201.191742]  drm_test_rect_calc_hscale+0x108/0x270
[  201.192381]  ? __pfx_drm_test_rect_calc_hscale+0x10/0x10
[  201.193040]  ? __schedule+0x10cc/0x2b60
[  201.193547]  ? __pfx_read_tsc+0x10/0x10
[  201.194014]  ? ktime_get_ts64+0x86/0x230
[  201.194584]  kunit_try_run_case+0x1a5/0x480
[  201.195207]  ? __pfx_kunit_try_run_case+0x10/0x10
[  201.195817]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  201.196432]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  201.197038]  ? __kthread_parkme+0x82/0x180
[  201.197566]  ? preempt_count_sub+0x50/0x80
[  201.198022]  ? __pfx_kunit_try_run_case+0x10/0x10
[  201.198610]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  201.199258]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  201.199962]  kthread+0x337/0x6f0
[  201.200395]  ? trace_preempt_on+0x20/0xc0
[  201.200867]  ? __pfx_kthread+0x10/0x10
[  201.201327]  ? _raw_spin_unlock_irq+0x47/0x80
[  201.201561]  ? calculate_sigpending+0x7b/0xa0
[  201.201733]  ? __pfx_kthread+0x10/0x10
[  201.201884]  ret_from_fork+0x116/0x1d0
[  201.202034]  ? __pfx_kthread+0x10/0x10
[  201.202182]  ret_from_fork_asm+0x1a/0x30
[  201.202348]  </TASK>
[  201.202470] ---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
[  201.152767] WARNING: drivers/gpu/drm/drm_rect.c:137 at drm_rect_calc_hscale+0x125/0x190, CPU#0: kunit_try_catch/2869
[  201.153625] Modules linked in:
[  201.153813] CPU: 0 UID: 0 PID: 2869 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc4-next-20250704 #1 PREEMPT(voluntary) 
[  201.154512] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  201.155291] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  201.156465] RIP: 0010:drm_rect_calc_hscale+0x125/0x190
[  201.157127] 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
[  201.159055] RSP: 0000:ffff888104307c78 EFLAGS: 00010286
[  201.159734] RAX: 00000000ffff0000 RBX: 00000000ffff0000 RCX: 0000000000010000
[  201.160236] RDX: 0000000000000003 RSI: 0000000000000000 RDI: ffffffffac25eb40
[  201.161105] RBP: ffff888104307ca0 R08: 0000000000000000 R09: ffffed1020e66300
[  201.161879] R10: ffff888107331807 R11: 0000000000000000 R12: ffffffffac25eb28
[  201.162112] R13: 0000000000000000 R14: 000000007fffffff R15: ffff888104307d38
[  201.163125] FS:  0000000000000000(0000) GS:ffff8881ace24000(0000) knlGS:0000000000000000
[  201.164232] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  201.165028] CR2: 00007ffff7ffe000 CR3: 0000000131ebc000 CR4: 00000000000006f0
[  201.165873] DR0: ffffffffae2a2480 DR1: ffffffffae2a2481 DR2: ffffffffae2a2483
[  201.166655] DR3: ffffffffae2a2485 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  201.166906] Call Trace:
[  201.167016]  <TASK>
[  201.167128]  drm_test_rect_calc_hscale+0x108/0x270
[  201.167738]  ? __pfx_drm_test_rect_calc_hscale+0x10/0x10
[  201.168613]  ? __schedule+0x10cc/0x2b60
[  201.169235]  ? __pfx_read_tsc+0x10/0x10
[  201.169673]  ? ktime_get_ts64+0x86/0x230
[  201.169883]  kunit_try_run_case+0x1a5/0x480
[  201.170054]  ? __pfx_kunit_try_run_case+0x10/0x10
[  201.170443]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  201.170926]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  201.171529]  ? __kthread_parkme+0x82/0x180
[  201.171966]  ? preempt_count_sub+0x50/0x80
[  201.172130]  ? __pfx_kunit_try_run_case+0x10/0x10
[  201.172802]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  201.173240]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  201.173670]  kthread+0x337/0x6f0
[  201.173806]  ? trace_preempt_on+0x20/0xc0
[  201.174021]  ? __pfx_kthread+0x10/0x10
[  201.174487]  ? _raw_spin_unlock_irq+0x47/0x80
[  201.174928]  ? calculate_sigpending+0x7b/0xa0
[  201.175485]  ? __pfx_kthread+0x10/0x10
[  201.175718]  ret_from_fork+0x116/0x1d0
[  201.175866]  ? __pfx_kthread+0x10/0x10
[  201.176109]  ret_from_fork_asm+0x1a/0x30
[  201.176758]  </TASK>
[  201.177037] ---[ end trace 0000000000000000 ]---