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Date
July 8, 2025, 7:07 p.m.

Environment
qemu-x86_64 

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[  144.578632] WARNING: CPU: 1 PID: 2765 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  144.579078] Modules linked in:
[  144.579534] CPU: 1 UID: 0 PID: 2765 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc5 #1 PREEMPT(voluntary) 
[  144.580604] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  144.581055] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  144.581880] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  144.582073] 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
[  144.584112] RSP: 0000:ffff8881093a7c78 EFLAGS: 00010286
[  144.584524] RAX: 0000000000010000 RBX: 00000000ffff0000 RCX: 00000000ffff0000
[  144.585396] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffff91033074
[  144.585789] RBP: ffff8881093a7ca0 R08: 0000000000000000 R09: ffffed1020ada1c0
[  144.586531] R10: ffff8881056d0e07 R11: 0000000000000000 R12: ffffffff91033060
[  144.587258] R13: 0000000000000000 R14: 000000007fffffff R15: ffff8881093a7d38
[  144.588131] FS:  0000000000000000(0000) GS:ffff8881c8172000(0000) knlGS:0000000000000000
[  144.588872] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  144.589321] CR2: 00007ffff7ffe000 CR3: 00000001210bc000 CR4: 00000000000006f0
[  144.589849] DR0: ffffffff93052440 DR1: ffffffff93052441 DR2: ffffffff93052443
[  144.590065] DR3: ffffffff93052445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  144.590861] Call Trace:
[  144.591181]  <TASK>
[  144.591453]  drm_test_rect_calc_vscale+0x108/0x270
[  144.591972]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  144.592620]  ? __schedule+0x10cc/0x2b60
[  144.592909]  ? __pfx_read_tsc+0x10/0x10
[  144.593269]  ? ktime_get_ts64+0x86/0x230
[  144.593425]  kunit_try_run_case+0x1a5/0x480
[  144.593620]  ? __pfx_kunit_try_run_case+0x10/0x10
[  144.594079]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  144.594713]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  144.595239]  ? __kthread_parkme+0x82/0x180
[  144.595708]  ? preempt_count_sub+0x50/0x80
[  144.596172]  ? __pfx_kunit_try_run_case+0x10/0x10
[  144.596545]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  144.596734]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  144.596929]  kthread+0x337/0x6f0
[  144.597056]  ? trace_preempt_on+0x20/0xc0
[  144.597550]  ? __pfx_kthread+0x10/0x10
[  144.598041]  ? _raw_spin_unlock_irq+0x47/0x80
[  144.598659]  ? calculate_sigpending+0x7b/0xa0
[  144.599204]  ? __pfx_kthread+0x10/0x10
[  144.599605]  ret_from_fork+0x116/0x1d0
[  144.599981]  ? __pfx_kthread+0x10/0x10
[  144.600421]  ret_from_fork_asm+0x1a/0x30
[  144.601151]  </TASK>
[  144.601586] ---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
[  144.562209] WARNING: CPU: 1 PID: 2763 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  144.562819] Modules linked in:
[  144.563001] CPU: 1 UID: 0 PID: 2763 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc5 #1 PREEMPT(voluntary) 
[  144.563885] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  144.564242] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  144.564615] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  144.564877] 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
[  144.565678] RSP: 0000:ffff888109767c78 EFLAGS: 00010286
[  144.565905] RAX: 00000000ffff0000 RBX: 00000000ffff0000 RCX: 0000000000010000
[  144.566400] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffff9103303c
[  144.566717] RBP: ffff888109767ca0 R08: 0000000000000000 R09: ffffed1020ada180
[  144.566987] R10: ffff8881056d0c07 R11: 0000000000000000 R12: ffffffff91033028
[  144.567375] R13: 0000000000000000 R14: 000000007fffffff R15: ffff888109767d38
[  144.567688] FS:  0000000000000000(0000) GS:ffff8881c8172000(0000) knlGS:0000000000000000
[  144.568009] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  144.568340] CR2: 00007ffff7ffe000 CR3: 00000001210bc000 CR4: 00000000000006f0
[  144.568648] DR0: ffffffff93052440 DR1: ffffffff93052441 DR2: ffffffff93052443
[  144.568925] DR3: ffffffff93052445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  144.569334] Call Trace:
[  144.569482]  <TASK>
[  144.569633]  drm_test_rect_calc_vscale+0x108/0x270
[  144.569869]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  144.570107]  ? __schedule+0x10cc/0x2b60
[  144.570301]  ? __pfx_read_tsc+0x10/0x10
[  144.570452]  ? ktime_get_ts64+0x86/0x230
[  144.570660]  kunit_try_run_case+0x1a5/0x480
[  144.570859]  ? __pfx_kunit_try_run_case+0x10/0x10
[  144.571096]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  144.571286]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  144.571481]  ? __kthread_parkme+0x82/0x180
[  144.571686]  ? preempt_count_sub+0x50/0x80
[  144.571860]  ? __pfx_kunit_try_run_case+0x10/0x10
[  144.572073]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  144.572519]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  144.572811]  kthread+0x337/0x6f0
[  144.572988]  ? trace_preempt_on+0x20/0xc0
[  144.573272]  ? __pfx_kthread+0x10/0x10
[  144.573442]  ? _raw_spin_unlock_irq+0x47/0x80
[  144.573696]  ? calculate_sigpending+0x7b/0xa0
[  144.573923]  ? __pfx_kthread+0x10/0x10
[  144.574207]  ret_from_fork+0x116/0x1d0
[  144.574370]  ? __pfx_kthread+0x10/0x10
[  144.574585]  ret_from_fork_asm+0x1a/0x30
[  144.574779]  </TASK>
[  144.574891] ---[ end trace 0000000000000000 ]---
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