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Date
July 3, 2025, 3:13 p.m.

Environment
qemu-x86_64 

------------[ cut here ]------------
[  143.862849] WARNING: CPU: 0 PID: 2730 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_hscale+0x125/0x190
[  143.863242] Modules linked in:
[  143.863590] CPU: 0 UID: 0 PID: 2730 Comm: kunit_try_catch Tainted: G    B D W        N  6.15.5-rc1 #1 PREEMPT(voluntary) 
[  143.864025] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  143.864290] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  143.865028] RIP: 0010:drm_rect_calc_hscale+0x125/0x190
[  143.865266] 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
[  143.866068] RSP: 0000:ffff888102bb7c78 EFLAGS: 00010286
[  143.866388] RAX: 0000000000010000 RBX: 00000000ffff0000 RCX: 00000000ffff0000
[  143.866673] RDX: 0000000000000003 RSI: 0000000000000000 RDI: ffffffff95624098
[  143.866960] RBP: ffff888102bb7ca0 R08: 0000000000000000 R09: ffffed1020628e60
[  143.867235] R10: ffff888103147307 R11: 0000000000000000 R12: ffffffff95624080
[  143.867553] R13: 0000000000000000 R14: 000000007fffffff R15: ffff888102bb7d38
[  143.868016] FS:  0000000000000000(0000) GS:ffff8881c3a92000(0000) knlGS:0000000000000000
[  143.868345] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  143.868655] CR2: 00007ffff7ffe000 CR3: 000000012a8ba000 CR4: 00000000000006f0
[  143.868950] DR0: ffffffff97631900 DR1: ffffffff97631901 DR2: ffffffff97631903
[  143.869247] DR3: ffffffff97631905 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  143.869574] Call Trace:
[  143.869788]  <TASK>
[  143.869919]  drm_test_rect_calc_hscale+0x108/0x270
[  143.870165]  ? __pfx_drm_test_rect_calc_hscale+0x10/0x10
[  143.870473]  ? __schedule+0x10cc/0x2b60
[  143.870652]  ? __pfx_read_tsc+0x10/0x10
[  143.870865]  ? ktime_get_ts64+0x86/0x230
[  143.871041]  kunit_try_run_case+0x1a5/0x480
[  143.871230]  ? __pfx_kunit_try_run_case+0x10/0x10
[  143.871462]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  143.871681]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  143.872058]  ? __kthread_parkme+0x82/0x180
[  143.872269]  ? preempt_count_sub+0x50/0x80
[  143.872455]  ? __pfx_kunit_try_run_case+0x10/0x10
[  143.872850]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  143.873117]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  143.873597]  kthread+0x337/0x6f0
[  143.873778]  ? trace_preempt_on+0x20/0xc0
[  143.874006]  ? __pfx_kthread+0x10/0x10
[  143.874179]  ? _raw_spin_unlock_irq+0x47/0x80
[  143.874523]  ? calculate_sigpending+0x7b/0xa0
[  143.874691]  ? __pfx_kthread+0x10/0x10
[  143.874906]  ret_from_fork+0x41/0x80
[  143.875095]  ? __pfx_kthread+0x10/0x10
[  143.875288]  ret_from_fork_asm+0x1a/0x30
[  143.875474]  </TASK>
[  143.875673] ---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
[  143.845158] WARNING: CPU: 1 PID: 2728 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_hscale+0x125/0x190
[  143.846765] Modules linked in:
[  143.846974] CPU: 1 UID: 0 PID: 2728 Comm: kunit_try_catch Tainted: G    B D W        N  6.15.5-rc1 #1 PREEMPT(voluntary) 
[  143.847328] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  143.847544] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  143.847931] RIP: 0010:drm_rect_calc_hscale+0x125/0x190
[  143.848364] 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
[  143.849206] RSP: 0000:ffff88810252fc78 EFLAGS: 00010286
[  143.849442] RAX: 00000000ffff0000 RBX: 00000000ffff0000 RCX: 0000000000010000
[  143.850110] RDX: 0000000000000003 RSI: 0000000000000000 RDI: ffffffff95624060
[  143.850542] RBP: ffff88810252fca0 R08: 0000000000000000 R09: ffffed1020628e00
[  143.850825] R10: ffff888103147007 R11: 0000000000000000 R12: ffffffff95624048
[  143.851214] R13: 0000000000000000 R14: 000000007fffffff R15: ffff88810252fd38
[  143.851621] FS:  0000000000000000(0000) GS:ffff8881c3b92000(0000) knlGS:0000000000000000
[  143.851977] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  143.852216] CR2: 00007ffff7ffe000 CR3: 000000012a8ba000 CR4: 00000000000006f0
[  143.852614] DR0: ffffffff97631904 DR1: ffffffff97631909 DR2: ffffffff9763190a
[  143.852909] DR3: ffffffff9763190b DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  143.853189] Call Trace:
[  143.853313]  <TASK>
[  143.853636]  drm_test_rect_calc_hscale+0x108/0x270
[  143.853887]  ? __pfx_drm_test_rect_calc_hscale+0x10/0x10
[  143.854087]  ? __schedule+0x10cc/0x2b60
[  143.854331]  ? __pfx_read_tsc+0x10/0x10
[  143.854544]  ? ktime_get_ts64+0x86/0x230
[  143.854740]  kunit_try_run_case+0x1a5/0x480
[  143.854940]  ? __pfx_kunit_try_run_case+0x10/0x10
[  143.855178]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  143.855379]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  143.855624]  ? __kthread_parkme+0x82/0x180
[  143.855948]  ? preempt_count_sub+0x50/0x80
[  143.856122]  ? __pfx_kunit_try_run_case+0x10/0x10
[  143.856318]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  143.856635]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  143.856935]  kthread+0x337/0x6f0
[  143.857099]  ? trace_preempt_on+0x20/0xc0
[  143.857273]  ? __pfx_kthread+0x10/0x10
[  143.857410]  ? _raw_spin_unlock_irq+0x47/0x80
[  143.857849]  ? calculate_sigpending+0x7b/0xa0
[  143.858068]  ? __pfx_kthread+0x10/0x10
[  143.858251]  ret_from_fork+0x41/0x80
[  143.858416]  ? __pfx_kthread+0x10/0x10
[  143.858684]  ret_from_fork_asm+0x1a/0x30
[  143.858893]  </TASK>
[  143.859021] ---[ end trace 0000000000000000 ]---
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