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

Environment
qemu-x86_64 

------------[ cut here ]------------
[  143.597536] WARNING: CPU: 1 PID: 2752 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_hscale+0x125/0x190
[  143.598317] Modules linked in:
[  143.598771] CPU: 1 UID: 0 PID: 2752 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc5 #1 PREEMPT(voluntary) 
[  143.599599] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  143.600318] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  143.601108] RIP: 0010:drm_rect_calc_hscale+0x125/0x190
[  143.601301] Code: 7f 43 41 39 ce 7c 3e 48 83 c4 08 89 c8 5b 41 5c 41 5d 41 5e 5d e9 5b d2 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
[  143.601812] RSP: 0000:ffff88810bdffc78 EFLAGS: 00010286
[  143.601996] RAX: 00000000ffff0000 RBX: 00000000ffff0000 RCX: 0000000000010000
[  143.602207] RDX: 0000000000000003 RSI: 0000000000000000 RDI: ffffffff87a33b80
[  143.602420] RBP: ffff88810bdffca0 R08: 0000000000000000 R09: ffffed10214c4ce0
[  143.602632] R10: ffff88810a626707 R11: 0000000000000000 R12: ffffffff87a33b68
[  143.603202] R13: 0000000000000000 R14: 000000007fffffff R15: ffff88810bdffd38
[  143.603961] FS:  0000000000000000(0000) GS:ffff8881d1772000(0000) knlGS:0000000000000000
[  143.604747] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  143.605284] CR2: 00007ffff7ffe000 CR3: 000000013d6bc000 CR4: 00000000000006f0
[  143.606174] DR0: ffffffff89a52440 DR1: ffffffff89a52441 DR2: ffffffff89a52443
[  143.607018] DR3: ffffffff89a52445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  143.607695] Call Trace:
[  143.607999]  <TASK>
[  143.608277]  drm_test_rect_calc_hscale+0x108/0x270
[  143.608792]  ? __pfx_drm_test_rect_calc_hscale+0x10/0x10
[  143.609340]  ? __schedule+0x10cc/0x2b60
[  143.609873]  ? __pfx_read_tsc+0x10/0x10
[  143.610309]  ? ktime_get_ts64+0x86/0x230
[  143.610768]  kunit_try_run_case+0x1a5/0x480
[  143.611176]  ? __pfx_kunit_try_run_case+0x10/0x10
[  143.611615]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  143.612187]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  143.612409]  ? __kthread_parkme+0x82/0x180
[  143.613017]  ? preempt_count_sub+0x50/0x80
[  143.613336]  ? __pfx_kunit_try_run_case+0x10/0x10
[  143.613504]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  143.613782]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  143.614331]  kthread+0x337/0x6f0
[  143.614659]  ? trace_preempt_on+0x20/0xc0
[  143.615205]  ? __pfx_kthread+0x10/0x10
[  143.615582]  ? _raw_spin_unlock_irq+0x47/0x80
[  143.616130]  ? calculate_sigpending+0x7b/0xa0
[  143.616552]  ? __pfx_kthread+0x10/0x10
[  143.616824]  ret_from_fork+0x116/0x1d0
[  143.617189]  ? __pfx_kthread+0x10/0x10
[  143.617571]  ret_from_fork_asm+0x1a/0x30
[  143.618048]  </TASK>
[  143.618146] ---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
[  143.621131] WARNING: CPU: 0 PID: 2754 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_hscale+0x125/0x190
[  143.621433] Modules linked in:
[  143.621575] CPU: 0 UID: 0 PID: 2754 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc5 #1 PREEMPT(voluntary) 
[  143.622052] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  143.622425] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  143.623018] RIP: 0010:drm_rect_calc_hscale+0x125/0x190
[  143.623270] Code: 7f 43 41 39 ce 7c 3e 48 83 c4 08 89 c8 5b 41 5c 41 5d 41 5e 5d e9 5b d2 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
[  143.623923] RSP: 0000:ffff88810bcffc78 EFLAGS: 00010286
[  143.624352] RAX: 0000000000010000 RBX: 00000000ffff0000 RCX: 00000000ffff0000
[  143.624845] RDX: 0000000000000003 RSI: 0000000000000000 RDI: ffffffff87a33bb8
[  143.625196] RBP: ffff88810bcffca0 R08: 0000000000000000 R09: ffffed1020ee8840
[  143.625947] R10: ffff888107744207 R11: 0000000000000000 R12: ffffffff87a33ba0
[  143.626327] R13: 0000000000000000 R14: 000000007fffffff R15: ffff88810bcffd38
[  143.626658] FS:  0000000000000000(0000) GS:ffff8881d1672000(0000) knlGS:0000000000000000
[  143.627212] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  143.627458] CR2: 00007ffff7ffe000 CR3: 000000013d6bc000 CR4: 00000000000006f0
[  143.627943] DR0: ffffffff89a52440 DR1: ffffffff89a52441 DR2: ffffffff89a52442
[  143.628405] DR3: ffffffff89a52443 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  143.628937] Call Trace:
[  143.629100]  <TASK>
[  143.629324]  drm_test_rect_calc_hscale+0x108/0x270
[  143.629902]  ? __pfx_drm_test_rect_calc_hscale+0x10/0x10
[  143.630167]  ? __schedule+0x10cc/0x2b60
[  143.630552]  ? __pfx_read_tsc+0x10/0x10
[  143.631078]  ? ktime_get_ts64+0x86/0x230
[  143.631311]  kunit_try_run_case+0x1a5/0x480
[  143.631873]  ? __pfx_kunit_try_run_case+0x10/0x10
[  143.632108]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  143.632340]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  143.632717]  ? __kthread_parkme+0x82/0x180
[  143.633135]  ? preempt_count_sub+0x50/0x80
[  143.633544]  ? __pfx_kunit_try_run_case+0x10/0x10
[  143.633905]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  143.634169]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  143.634578]  kthread+0x337/0x6f0
[  143.635092]  ? trace_preempt_on+0x20/0xc0
[  143.635296]  ? __pfx_kthread+0x10/0x10
[  143.635476]  ? _raw_spin_unlock_irq+0x47/0x80
[  143.635648]  ? calculate_sigpending+0x7b/0xa0
[  143.636350]  ? __pfx_kthread+0x10/0x10
[  143.636539]  ret_from_fork+0x116/0x1d0
[  143.636815]  ? __pfx_kthread+0x10/0x10
[  143.637020]  ret_from_fork_asm+0x1a/0x30
[  143.637374]  </TASK>
[  143.637533] ---[ end trace 0000000000000000 ]---
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