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Date
July 2, 2025, 11:09 p.m.

Environment
qemu-x86_64 

------------[ cut here ]------------
[  140.894255] WARNING: CPU: 0 PID: 2767 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  140.895006] Modules linked in:
[  140.895298] CPU: 0 UID: 0 PID: 2767 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[  140.896072] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  140.896453] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  140.897024] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  140.897375] Code: 7f 43 41 39 ce 7c 3e 48 83 c4 08 89 c8 5b 41 5c 41 5d 41 5e 5d e9 40 cf 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
[  140.898463] RSP: 0000:ffff88810ad17c78 EFLAGS: 00010286
[  140.898899] RAX: 0000000000010000 RBX: 00000000ffff0000 RCX: 00000000ffff0000
[  140.899270] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffff8ae32794
[  140.899560] RBP: ffff88810ad17ca0 R08: 0000000000000000 R09: ffffed1020a164e0
[  140.900063] R10: ffff8881050b2707 R11: 0000000000000000 R12: ffffffff8ae32780
[  140.900439] R13: 0000000000000000 R14: 000000007fffffff R15: ffff88810ad17d38
[  140.901028] FS:  0000000000000000(0000) GS:ffff8881ce274000(0000) knlGS:0000000000000000
[  140.901386] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  140.901623] CR2: 00007ffff7ffe000 CR3: 00000001356bc000 CR4: 00000000000006f0
[  140.902177] DR0: ffffffff8ce50440 DR1: ffffffff8ce50441 DR2: ffffffff8ce50443
[  140.902637] DR3: ffffffff8ce50445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  140.903087] Call Trace:
[  140.903294]  <TASK>
[  140.903496]  drm_test_rect_calc_vscale+0x108/0x270
[  140.903900]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  140.904292]  ? __schedule+0x10cc/0x2b60
[  140.904650]  ? __pfx_read_tsc+0x10/0x10
[  140.904884]  ? ktime_get_ts64+0x86/0x230
[  140.905086]  kunit_try_run_case+0x1a5/0x480
[  140.905290]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.905516]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  140.906204]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  140.906460]  ? __kthread_parkme+0x82/0x180
[  140.906831]  ? preempt_count_sub+0x50/0x80
[  140.907031]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.907398]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  140.907645]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  140.908184]  kthread+0x337/0x6f0
[  140.908369]  ? trace_preempt_on+0x20/0xc0
[  140.908559]  ? __pfx_kthread+0x10/0x10
[  140.908977]  ? _raw_spin_unlock_irq+0x47/0x80
[  140.909270]  ? calculate_sigpending+0x7b/0xa0
[  140.909735]  ? __pfx_kthread+0x10/0x10
[  140.909983]  ret_from_fork+0x116/0x1d0
[  140.910178]  ? __pfx_kthread+0x10/0x10
[  140.910374]  ret_from_fork_asm+0x1a/0x30
[  140.910570]  </TASK>
[  140.911035] ---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
[  140.875368] WARNING: CPU: 0 PID: 2765 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  140.875842] Modules linked in:
[  140.876161] CPU: 0 UID: 0 PID: 2765 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[  140.876566] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  140.876938] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  140.877527] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  140.878206] Code: 7f 43 41 39 ce 7c 3e 48 83 c4 08 89 c8 5b 41 5c 41 5d 41 5e 5d e9 40 cf 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
[  140.879390] RSP: 0000:ffff88810aeffc78 EFLAGS: 00010286
[  140.879760] RAX: 00000000ffff0000 RBX: 00000000ffff0000 RCX: 0000000000010000
[  140.880060] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffff8ae3275c
[  140.880385] RBP: ffff88810aeffca0 R08: 0000000000000000 R09: ffffed1020dfdde0
[  140.880823] R10: ffff888106feef07 R11: 0000000000000000 R12: ffffffff8ae32748
[  140.881125] R13: 0000000000000000 R14: 000000007fffffff R15: ffff88810aeffd38
[  140.881438] FS:  0000000000000000(0000) GS:ffff8881ce274000(0000) knlGS:0000000000000000
[  140.881855] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  140.882129] CR2: 00007ffff7ffe000 CR3: 00000001356bc000 CR4: 00000000000006f0
[  140.882470] DR0: ffffffff8ce50440 DR1: ffffffff8ce50441 DR2: ffffffff8ce50443
[  140.883026] DR3: ffffffff8ce50445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  140.883353] Call Trace:
[  140.883477]  <TASK>
[  140.883710]  drm_test_rect_calc_vscale+0x108/0x270
[  140.883970]  ? __kasan_check_write+0x18/0x20
[  140.884247]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  140.884466]  ? sysvec_apic_timer_interrupt+0x50/0x90
[  140.884820]  ? trace_hardirqs_on+0x37/0xe0
[  140.885222]  ? __pfx_read_tsc+0x10/0x10
[  140.885391]  ? ktime_get_ts64+0x86/0x230
[  140.885680]  kunit_try_run_case+0x1a5/0x480
[  140.886010]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.886254]  ? queued_spin_lock_slowpath+0x116/0xb40
[  140.886512]  ? __kthread_parkme+0x82/0x180
[  140.886997]  ? preempt_count_sub+0x50/0x80
[  140.887238]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.887487]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  140.887820]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  140.888208]  kthread+0x337/0x6f0
[  140.888394]  ? trace_preempt_on+0x20/0xc0
[  140.888773]  ? __pfx_kthread+0x10/0x10
[  140.889048]  ? _raw_spin_unlock_irq+0x47/0x80
[  140.889234]  ? calculate_sigpending+0x7b/0xa0
[  140.889472]  ? __pfx_kthread+0x10/0x10
[  140.889892]  ret_from_fork+0x116/0x1d0
[  140.890047]  ? __pfx_kthread+0x10/0x10
[  140.890316]  ret_from_fork_asm+0x1a/0x30
[  140.890822]  </TASK>
[  140.890933] ---[ end trace 0000000000000000 ]---
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