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Date
July 1, 2025, 12:10 a.m.

Environment
qemu-x86_64 

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[  141.484693] WARNING: CPU: 0 PID: 2763 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  141.485001] Modules linked in:
[  141.485246] CPU: 0 UID: 0 PID: 2763 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[  141.485917] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  141.486903] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  141.487990] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  141.488798] Code: 7f 43 41 39 ce 7c 3e 48 83 c4 08 89 c8 5b 41 5c 41 5d 41 5e 5d e9 80 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
[  141.490448] RSP: 0000:ffff88810a78fc78 EFLAGS: 00010286
[  141.490642] RAX: 00000000ffff0000 RBX: 00000000ffff0000 RCX: 0000000000010000
[  141.490858] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffff8d03275c
[  141.491183] RBP: ffff88810a78fca0 R08: 0000000000000000 R09: ffffed1020912460
[  141.491915] R10: ffff888104892307 R11: 0000000000000000 R12: ffffffff8d032748
[  141.492841] R13: 0000000000000000 R14: 000000007fffffff R15: ffff88810a78fd38
[  141.493804] FS:  0000000000000000(0000) GS:ffff8881cc074000(0000) knlGS:0000000000000000
[  141.494623] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  141.495119] CR2: 00007ffff7ffe000 CR3: 00000001208bc000 CR4: 00000000000006f0
[  141.495567] DR0: ffffffff8f050440 DR1: ffffffff8f050441 DR2: ffffffff8f050442
[  141.495786] DR3: ffffffff8f050443 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  141.495996] Call Trace:
[  141.496428]  <TASK>
[  141.496664]  drm_test_rect_calc_vscale+0x108/0x270
[  141.497299]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  141.497795]  ? __schedule+0x10cc/0x2b60
[  141.498277]  ? __pfx_read_tsc+0x10/0x10
[  141.498674]  ? ktime_get_ts64+0x86/0x230
[  141.499140]  kunit_try_run_case+0x1a5/0x480
[  141.499386]  ? __pfx_kunit_try_run_case+0x10/0x10
[  141.499551]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  141.499713]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  141.499880]  ? __kthread_parkme+0x82/0x180
[  141.500027]  ? preempt_count_sub+0x50/0x80
[  141.500620]  ? __pfx_kunit_try_run_case+0x10/0x10
[  141.501169]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  141.501668]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  141.502308]  kthread+0x337/0x6f0
[  141.502656]  ? trace_preempt_on+0x20/0xc0
[  141.503048]  ? __pfx_kthread+0x10/0x10
[  141.503551]  ? _raw_spin_unlock_irq+0x47/0x80
[  141.503875]  ? calculate_sigpending+0x7b/0xa0
[  141.504035]  ? __pfx_kthread+0x10/0x10
[  141.504706]  ret_from_fork+0x116/0x1d0
[  141.505126]  ? __pfx_kthread+0x10/0x10
[  141.505557]  ret_from_fork_asm+0x1a/0x30
[  141.505717]  </TASK>
[  141.505811] ---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
[  141.510541] WARNING: CPU: 0 PID: 2765 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  141.511641] Modules linked in:
[  141.512000] CPU: 0 UID: 0 PID: 2765 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[  141.512532] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  141.512718] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  141.512982] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  141.513482] Code: 7f 43 41 39 ce 7c 3e 48 83 c4 08 89 c8 5b 41 5c 41 5d 41 5e 5d e9 80 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
[  141.515518] RSP: 0000:ffff888109d17c78 EFLAGS: 00010286
[  141.516025] RAX: 0000000000010000 RBX: 00000000ffff0000 RCX: 00000000ffff0000
[  141.516982] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffff8d032794
[  141.517497] RBP: ffff888109d17ca0 R08: 0000000000000000 R09: ffffed10202cfd80
[  141.517717] R10: ffff88810167ec07 R11: 0000000000000000 R12: ffffffff8d032780
[  141.517927] R13: 0000000000000000 R14: 000000007fffffff R15: ffff888109d17d38
[  141.518425] FS:  0000000000000000(0000) GS:ffff8881cc074000(0000) knlGS:0000000000000000
[  141.519164] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  141.519760] CR2: 00007ffff7ffe000 CR3: 00000001208bc000 CR4: 00000000000006f0
[  141.520427] DR0: ffffffff8f050440 DR1: ffffffff8f050441 DR2: ffffffff8f050442
[  141.521189] DR3: ffffffff8f050443 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  141.521805] Call Trace:
[  141.521911]  <TASK>
[  141.522009]  drm_test_rect_calc_vscale+0x108/0x270
[  141.522630]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  141.523434]  ? __schedule+0x10cc/0x2b60
[  141.523822]  ? __pfx_read_tsc+0x10/0x10
[  141.524274]  ? ktime_get_ts64+0x86/0x230
[  141.524428]  kunit_try_run_case+0x1a5/0x480
[  141.524581]  ? __pfx_kunit_try_run_case+0x10/0x10
[  141.524742]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  141.524901]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  141.525119]  ? __kthread_parkme+0x82/0x180
[  141.525298]  ? preempt_count_sub+0x50/0x80
[  141.525445]  ? __pfx_kunit_try_run_case+0x10/0x10
[  141.525840]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  141.526227]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  141.526441]  kthread+0x337/0x6f0
[  141.526617]  ? trace_preempt_on+0x20/0xc0
[  141.526848]  ? __pfx_kthread+0x10/0x10
[  141.526993]  ? _raw_spin_unlock_irq+0x47/0x80
[  141.527331]  ? calculate_sigpending+0x7b/0xa0
[  141.527487]  ? __pfx_kthread+0x10/0x10
[  141.527829]  ret_from_fork+0x116/0x1d0
[  141.528019]  ? __pfx_kthread+0x10/0x10
[  141.528313]  ret_from_fork_asm+0x1a/0x30
[  141.528562]  </TASK>
[  141.528678] ---[ end trace 0000000000000000 ]---
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