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Date
July 9, 2025, 11:07 p.m.

Environment
qemu-x86_64 

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[  140.880273] WARNING: CPU: 1 PID: 2763 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  140.880725] Modules linked in:
[  140.881108] CPU: 1 UID: 0 PID: 2763 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc5 #1 PREEMPT(voluntary) 
[  140.882308] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  140.882556] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  140.883025] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  140.883435] 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
[  140.884397] RSP: 0000:ffff88810e4efc78 EFLAGS: 00010286
[  140.884755] RAX: 00000000ffff0000 RBX: 00000000ffff0000 RCX: 0000000000010000
[  140.885170] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffff8cc337bc
[  140.885728] RBP: ffff88810e4efca0 R08: 0000000000000000 R09: ffffed1020966160
[  140.886219] R10: ffff888104b30b07 R11: 0000000000000000 R12: ffffffff8cc337a8
[  140.886501] R13: 0000000000000000 R14: 000000007fffffff R15: ffff88810e4efd38
[  140.886978] FS:  0000000000000000(0000) GS:ffff8881cc572000(0000) knlGS:0000000000000000
[  140.887607] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  140.887808] CR2: 00007ffff7ffe000 CR3: 000000002febc000 CR4: 00000000000006f0
[  140.888055] DR0: ffffffff8ec52440 DR1: ffffffff8ec52441 DR2: ffffffff8ec52443
[  140.888879] DR3: ffffffff8ec52445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  140.889634] Call Trace:
[  140.890001]  <TASK>
[  140.890286]  drm_test_rect_calc_vscale+0x108/0x270
[  140.890931]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  140.891417]  ? __schedule+0x10cc/0x2b60
[  140.891576]  ? __pfx_read_tsc+0x10/0x10
[  140.891734]  ? ktime_get_ts64+0x86/0x230
[  140.891882]  kunit_try_run_case+0x1a5/0x480
[  140.892121]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.892569]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  140.893060]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  140.893577]  ? __kthread_parkme+0x82/0x180
[  140.893969]  ? preempt_count_sub+0x50/0x80
[  140.894482]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.894940]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  140.895639]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  140.896010]  kthread+0x337/0x6f0
[  140.896420]  ? trace_preempt_on+0x20/0xc0
[  140.896733]  ? __pfx_kthread+0x10/0x10
[  140.896872]  ? _raw_spin_unlock_irq+0x47/0x80
[  140.897062]  ? calculate_sigpending+0x7b/0xa0
[  140.897487]  ? __pfx_kthread+0x10/0x10
[  140.897842]  ret_from_fork+0x116/0x1d0
[  140.898218]  ? __pfx_kthread+0x10/0x10
[  140.898707]  ret_from_fork_asm+0x1a/0x30
[  140.898955]  </TASK>
[  140.899109] ---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
[  140.902322] WARNING: CPU: 1 PID: 2765 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  140.902799] Modules linked in:
[  140.903182] CPU: 1 UID: 0 PID: 2765 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc5 #1 PREEMPT(voluntary) 
[  140.904660] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  140.905275] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  140.905773] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  140.905951] 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
[  140.906862] RSP: 0000:ffff8881048c7c78 EFLAGS: 00010286
[  140.907308] RAX: 0000000000010000 RBX: 00000000ffff0000 RCX: 00000000ffff0000
[  140.907607] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffff8cc337f4
[  140.907912] RBP: ffff8881048c7ca0 R08: 0000000000000000 R09: ffffed1021801980
[  140.908349] R10: ffff88810c00cc07 R11: 0000000000000000 R12: ffffffff8cc337e0
[  140.908595] R13: 0000000000000000 R14: 000000007fffffff R15: ffff8881048c7d38
[  140.908924] FS:  0000000000000000(0000) GS:ffff8881cc572000(0000) knlGS:0000000000000000
[  140.909497] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  140.909797] CR2: 00007ffff7ffe000 CR3: 000000002febc000 CR4: 00000000000006f0
[  140.910376] DR0: ffffffff8ec52440 DR1: ffffffff8ec52441 DR2: ffffffff8ec52443
[  140.910814] DR3: ffffffff8ec52445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  140.911436] Call Trace:
[  140.911575]  <TASK>
[  140.911835]  drm_test_rect_calc_vscale+0x108/0x270
[  140.912378]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  140.912637]  ? __schedule+0x10cc/0x2b60
[  140.912871]  ? __pfx_read_tsc+0x10/0x10
[  140.913427]  ? ktime_get_ts64+0x86/0x230
[  140.913640]  kunit_try_run_case+0x1a5/0x480
[  140.913872]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.914314]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  140.914551]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  140.914808]  ? __kthread_parkme+0x82/0x180
[  140.915004]  ? preempt_count_sub+0x50/0x80
[  140.915663]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.915984]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  140.916589]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  140.916886]  kthread+0x337/0x6f0
[  140.917342]  ? trace_preempt_on+0x20/0xc0
[  140.917558]  ? __pfx_kthread+0x10/0x10
[  140.917755]  ? _raw_spin_unlock_irq+0x47/0x80
[  140.918325]  ? calculate_sigpending+0x7b/0xa0
[  140.918552]  ? __pfx_kthread+0x10/0x10
[  140.918757]  ret_from_fork+0x116/0x1d0
[  140.919237]  ? __pfx_kthread+0x10/0x10
[  140.919462]  ret_from_fork_asm+0x1a/0x30
[  140.919673]  </TASK>
[  140.919807] ---[ end trace 0000000000000000 ]---
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