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Date
July 12, 2025, 11:09 a.m.

Environment
qemu-x86_64 

------------[ cut here ]------------
[  143.677396] WARNING: CPU: 1 PID: 2764 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  143.677946] Modules linked in:
[  143.678134] CPU: 1 UID: 0 PID: 2764 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc5 #1 PREEMPT(voluntary) 
[  143.678562] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  143.678903] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  143.679324] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  143.679541] 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
[  143.680553] RSP: 0000:ffff88810bdffc78 EFLAGS: 00010286
[  143.681178] RAX: 00000000ffff0000 RBX: 00000000ffff0000 RCX: 0000000000010000
[  143.681483] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffff87a33b7c
[  143.681810] RBP: ffff88810bdffca0 R08: 0000000000000000 R09: ffffed1020ee88e0
[  143.682365] R10: ffff888107744707 R11: 0000000000000000 R12: ffffffff87a33b68
[  143.683098] R13: 0000000000000000 R14: 000000007fffffff R15: ffff88810bdffd38
[  143.683376] FS:  0000000000000000(0000) GS:ffff8881d1772000(0000) knlGS:0000000000000000
[  143.683736] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  143.684170] CR2: 00007ffff7ffe000 CR3: 000000013d6bc000 CR4: 00000000000006f0
[  143.684479] DR0: ffffffff89a52440 DR1: ffffffff89a52441 DR2: ffffffff89a52443
[  143.684801] DR3: ffffffff89a52445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  143.685423] Call Trace:
[  143.685554]  <TASK>
[  143.685936]  drm_test_rect_calc_vscale+0x108/0x270
[  143.686143]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  143.686532]  ? __schedule+0x10cc/0x2b60
[  143.686882]  ? __pfx_read_tsc+0x10/0x10
[  143.687197]  ? ktime_get_ts64+0x86/0x230
[  143.687377]  kunit_try_run_case+0x1a5/0x480
[  143.687901]  ? __pfx_kunit_try_run_case+0x10/0x10
[  143.688128]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  143.688358]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  143.688675]  ? __kthread_parkme+0x82/0x180
[  143.688952]  ? preempt_count_sub+0x50/0x80
[  143.689148]  ? __pfx_kunit_try_run_case+0x10/0x10
[  143.689368]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  143.689605]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  143.690234]  kthread+0x337/0x6f0
[  143.690541]  ? trace_preempt_on+0x20/0xc0
[  143.690907]  ? __pfx_kthread+0x10/0x10
[  143.691206]  ? _raw_spin_unlock_irq+0x47/0x80
[  143.691492]  ? calculate_sigpending+0x7b/0xa0
[  143.691946]  ? __pfx_kthread+0x10/0x10
[  143.692138]  ret_from_fork+0x116/0x1d0
[  143.692558]  ? __pfx_kthread+0x10/0x10
[  143.692946]  ret_from_fork_asm+0x1a/0x30
[  143.693272]  </TASK>
[  143.693419] ---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
[  143.696879] WARNING: CPU: 0 PID: 2766 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  143.697410] Modules linked in:
[  143.697565] CPU: 0 UID: 0 PID: 2766 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc5 #1 PREEMPT(voluntary) 
[  143.699140] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  143.699793] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  143.701098] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  143.701463] 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
[  143.703234] RSP: 0000:ffff88810be77c78 EFLAGS: 00010286
[  143.703922] RAX: 0000000000010000 RBX: 00000000ffff0000 RCX: 00000000ffff0000
[  143.704405] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffff87a33bb4
[  143.704641] RBP: ffff88810be77ca0 R08: 0000000000000000 R09: ffffed1020ee8920
[  143.705001] R10: ffff888107744907 R11: 0000000000000000 R12: ffffffff87a33ba0
[  143.705537] R13: 0000000000000000 R14: 000000007fffffff R15: ffff88810be77d38
[  143.706191] FS:  0000000000000000(0000) GS:ffff8881d1672000(0000) knlGS:0000000000000000
[  143.706875] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  143.707259] CR2: 00007ffff7ffe000 CR3: 000000013d6bc000 CR4: 00000000000006f0
[  143.707470] DR0: ffffffff89a52440 DR1: ffffffff89a52441 DR2: ffffffff89a52442
[  143.708081] DR3: ffffffff89a52443 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  143.708856] Call Trace:
[  143.709125]  <TASK>
[  143.709369]  drm_test_rect_calc_vscale+0x108/0x270
[  143.709779]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  143.710172]  ? __schedule+0x10cc/0x2b60
[  143.710323]  ? __pfx_read_tsc+0x10/0x10
[  143.710473]  ? ktime_get_ts64+0x86/0x230
[  143.710619]  kunit_try_run_case+0x1a5/0x480
[  143.711200]  ? __pfx_kunit_try_run_case+0x10/0x10
[  143.711766]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  143.712364]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  143.713053]  ? __kthread_parkme+0x82/0x180
[  143.713377]  ? preempt_count_sub+0x50/0x80
[  143.713534]  ? __pfx_kunit_try_run_case+0x10/0x10
[  143.713973]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  143.714502]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  143.715056]  kthread+0x337/0x6f0
[  143.715372]  ? trace_preempt_on+0x20/0xc0
[  143.715523]  ? __pfx_kthread+0x10/0x10
[  143.715668]  ? _raw_spin_unlock_irq+0x47/0x80
[  143.716177]  ? calculate_sigpending+0x7b/0xa0
[  143.716637]  ? __pfx_kthread+0x10/0x10
[  143.717123]  ret_from_fork+0x116/0x1d0
[  143.717489]  ? __pfx_kthread+0x10/0x10
[  143.717863]  ret_from_fork_asm+0x1a/0x30
[  143.718026]  </TASK>
[  143.718118] ---[ end trace 0000000000000000 ]---
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