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Date
July 17, 2025, 11:11 p.m.

Environment
qemu-x86_64 

------------[ cut here ]------------
[  148.113533] WARNING: CPU: 0 PID: 2763 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  148.114473] Modules linked in:
[  148.115207] CPU: 0 UID: 0 PID: 2763 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[  148.116489] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  148.117042] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  148.117333] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  148.117604] 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
[  148.120518] RSP: 0000:ffff88810b8cfc78 EFLAGS: 00010286
[  148.121222] RAX: 00000000ffff0000 RBX: 00000000ffff0000 RCX: 0000000000010000
[  148.121482] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffff9c433bfc
[  148.121712] RBP: ffff88810b8cfca0 R08: 0000000000000000 R09: ffffed1020680960
[  148.122428] R10: ffff888103404b07 R11: 0000000000000000 R12: ffffffff9c433be8
[  148.123257] R13: 0000000000000000 R14: 000000007fffffff R15: ffff88810b8cfd38
[  148.124247] FS:  0000000000000000(0000) GS:ffff8881bcc72000(0000) knlGS:0000000000000000
[  148.124877] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  148.125295] CR2: 00007ffff7ffe000 CR3: 000000014a4bc000 CR4: 00000000000006f0
[  148.125603] DR0: ffffffff9e452440 DR1: ffffffff9e452441 DR2: ffffffff9e452443
[  148.126487] DR3: ffffffff9e452445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  148.127181] Call Trace:
[  148.127301]  <TASK>
[  148.127414]  drm_test_rect_calc_vscale+0x108/0x270
[  148.127853]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  148.128508]  ? __schedule+0x10cc/0x2b60
[  148.128944]  ? __pfx_read_tsc+0x10/0x10
[  148.129579]  ? ktime_get_ts64+0x86/0x230
[  148.130327]  kunit_try_run_case+0x1a5/0x480
[  148.130548]  ? __pfx_kunit_try_run_case+0x10/0x10
[  148.130728]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  148.131199]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  148.131732]  ? __kthread_parkme+0x82/0x180
[  148.132226]  ? preempt_count_sub+0x50/0x80
[  148.132802]  ? __pfx_kunit_try_run_case+0x10/0x10
[  148.133316]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  148.133798]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  148.134583]  kthread+0x337/0x6f0
[  148.134739]  ? trace_preempt_on+0x20/0xc0
[  148.135204]  ? __pfx_kthread+0x10/0x10
[  148.135585]  ? _raw_spin_unlock_irq+0x47/0x80
[  148.136135]  ? calculate_sigpending+0x7b/0xa0
[  148.136432]  ? __pfx_kthread+0x10/0x10
[  148.136776]  ret_from_fork+0x116/0x1d0
[  148.137246]  ? __pfx_kthread+0x10/0x10
[  148.137692]  ret_from_fork_asm+0x1a/0x30
[  148.137965]  </TASK>
[  148.138273] ---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
[  148.143741] WARNING: CPU: 0 PID: 2765 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  148.144537] Modules linked in:
[  148.144716] CPU: 0 UID: 0 PID: 2765 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[  148.145727] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  148.146389] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  148.147415] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  148.148278] 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
[  148.149837] RSP: 0000:ffff888103d77c78 EFLAGS: 00010286
[  148.150247] RAX: 0000000000010000 RBX: 00000000ffff0000 RCX: 00000000ffff0000
[  148.150483] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffff9c433c34
[  148.150710] RBP: ffff888103d77ca0 R08: 0000000000000000 R09: ffffed1021b6ed20
[  148.150968] R10: ffff88810db76907 R11: 0000000000000000 R12: ffffffff9c433c20
[  148.151619] R13: 0000000000000000 R14: 000000007fffffff R15: ffff888103d77d38
[  148.151929] FS:  0000000000000000(0000) GS:ffff8881bcc72000(0000) knlGS:0000000000000000
[  148.152418] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  148.152811] CR2: 00007ffff7ffe000 CR3: 000000014a4bc000 CR4: 00000000000006f0
[  148.153309] DR0: ffffffff9e452440 DR1: ffffffff9e452441 DR2: ffffffff9e452443
[  148.153832] DR3: ffffffff9e452445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  148.154317] Call Trace:
[  148.154506]  <TASK>
[  148.154657]  drm_test_rect_calc_vscale+0x108/0x270
[  148.154851]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  148.155370]  ? __schedule+0x10cc/0x2b60
[  148.155771]  ? __pfx_read_tsc+0x10/0x10
[  148.156189]  ? ktime_get_ts64+0x86/0x230
[  148.156426]  kunit_try_run_case+0x1a5/0x480
[  148.156712]  ? __pfx_kunit_try_run_case+0x10/0x10
[  148.157052]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  148.157489]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  148.157870]  ? __kthread_parkme+0x82/0x180
[  148.158208]  ? preempt_count_sub+0x50/0x80
[  148.158400]  ? __pfx_kunit_try_run_case+0x10/0x10
[  148.158679]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  148.158922]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  148.159372]  kthread+0x337/0x6f0
[  148.159686]  ? trace_preempt_on+0x20/0xc0
[  148.159940]  ? __pfx_kthread+0x10/0x10
[  148.160260]  ? _raw_spin_unlock_irq+0x47/0x80
[  148.160454]  ? calculate_sigpending+0x7b/0xa0
[  148.160617]  ? __pfx_kthread+0x10/0x10
[  148.160778]  ret_from_fork+0x116/0x1d0
[  148.160922]  ? __pfx_kthread+0x10/0x10
[  148.161079]  ret_from_fork_asm+0x1a/0x30
[  148.161241]  </TASK>
[  148.161338] ---[ end trace 0000000000000000 ]---
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