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Date
June 17, 2025, 3:40 p.m.

Environment
qemu-x86_64 

------------[ cut here ]------------
[  208.017129] WARNING: CPU: 1 PID: 2728 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_hscale+0x125/0x190
[  208.019073] Modules linked in:
[  208.019854] CPU: 1 UID: 0 PID: 2728 Comm: kunit_try_catch Tainted: G    B D W        N  6.15.3-rc1 #1 PREEMPT(voluntary) 
[  208.021195] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  208.021714] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  208.022492] RIP: 0010:drm_rect_calc_hscale+0x125/0x190
[  208.023032] 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
[  208.024620] RSP: 0000:ffff8881030ffc78 EFLAGS: 00010286
[  208.025186] RAX: 00000000ffff0000 RBX: 00000000ffff0000 RCX: 0000000000010000
[  208.025838] RDX: 0000000000000003 RSI: 0000000000000000 RDI: ffffffff9bc23bc0
[  208.026578] RBP: ffff8881030ffca0 R08: 0000000000000000 R09: ffffed102064af80
[  208.027251] R10: ffff888103257c07 R11: 0000000000000000 R12: ffffffff9bc23ba8
[  208.027835] R13: 0000000000000000 R14: 000000007fffffff R15: ffff8881030ffd38
[  208.028638] FS:  0000000000000000(0000) GS:ffff8881bd593000(0000) knlGS:0000000000000000
[  208.029349] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  208.029891] CR2: 00007ffff7ffe000 CR3: 000000006b8ba000 CR4: 00000000000006f0
[  208.030525] DR0: ffffffff9dc30900 DR1: ffffffff9dc30901 DR2: ffffffff9dc30903
[  208.031228] DR3: ffffffff9dc30905 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  208.031833] Call Trace:
[  208.032910]  <TASK>
[  208.033434]  drm_test_rect_calc_hscale+0x108/0x270
[  208.033829]  ? __pfx_drm_test_rect_calc_hscale+0x10/0x10
[  208.034590]  ? __schedule+0x10cc/0x2b60
[  208.035201]  ? __pfx_read_tsc+0x10/0x10
[  208.035567]  ? ktime_get_ts64+0x86/0x230
[  208.036206]  kunit_try_run_case+0x1a5/0x480
[  208.036698]  ? __pfx_kunit_try_run_case+0x10/0x10
[  208.037405]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  208.038334]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  208.039560]  ? __kthread_parkme+0x82/0x180
[  208.040433]  ? preempt_count_sub+0x50/0x80
[  208.040867]  ? __pfx_kunit_try_run_case+0x10/0x10
[  208.041306]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  208.041789]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  208.042318]  kthread+0x337/0x6f0
[  208.042821]  ? trace_preempt_on+0x20/0xc0
[  208.043517]  ? __pfx_kthread+0x10/0x10
[  208.043910]  ? _raw_spin_unlock_irq+0x47/0x80
[  208.044582]  ? calculate_sigpending+0x7b/0xa0
[  208.045237]  ? __pfx_kthread+0x10/0x10
[  208.045718]  ret_from_fork+0x41/0x80
[  208.046338]  ? __pfx_kthread+0x10/0x10
[  208.046700]  ret_from_fork_asm+0x1a/0x30
[  208.048115]  </TASK>
[  208.048539] ---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
[  208.055768] WARNING: CPU: 1 PID: 2730 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_hscale+0x125/0x190
[  208.057653] Modules linked in:
[  208.058405] CPU: 1 UID: 0 PID: 2730 Comm: kunit_try_catch Tainted: G    B D W        N  6.15.3-rc1 #1 PREEMPT(voluntary) 
[  208.061004] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  208.061707] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  208.062733] RIP: 0010:drm_rect_calc_hscale+0x125/0x190
[  208.063482] 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
[  208.064939] RSP: 0000:ffff888102cc7c78 EFLAGS: 00010286
[  208.065732] RAX: 0000000000010000 RBX: 00000000ffff0000 RCX: 00000000ffff0000
[  208.066977] RDX: 0000000000000003 RSI: 0000000000000000 RDI: ffffffff9bc23bf8
[  208.067875] RBP: ffff888102cc7ca0 R08: 0000000000000000 R09: ffffed102064afc0
[  208.068719] R10: ffff888103257e07 R11: 0000000000000000 R12: ffffffff9bc23be0
[  208.069658] R13: 0000000000000000 R14: 000000007fffffff R15: ffff888102cc7d38
[  208.070105] FS:  0000000000000000(0000) GS:ffff8881bd593000(0000) knlGS:0000000000000000
[  208.070402] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  208.071248] CR2: 00007ffff7ffe000 CR3: 000000006b8ba000 CR4: 00000000000006f0
[  208.071905] DR0: ffffffff9dc30900 DR1: ffffffff9dc30901 DR2: ffffffff9dc30903
[  208.072913] DR3: ffffffff9dc30905 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  208.074538] Call Trace:
[  208.074928]  <TASK>
[  208.075396]  drm_test_rect_calc_hscale+0x108/0x270
[  208.075886]  ? __pfx_drm_test_rect_calc_hscale+0x10/0x10
[  208.076866]  ? __schedule+0x10cc/0x2b60
[  208.077712]  ? __pfx_read_tsc+0x10/0x10
[  208.078562]  ? ktime_get_ts64+0x86/0x230
[  208.079258]  kunit_try_run_case+0x1a5/0x480
[  208.079499]  ? __pfx_kunit_try_run_case+0x10/0x10
[  208.079693]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  208.079881]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  208.080551]  ? __kthread_parkme+0x82/0x180
[  208.081414]  ? preempt_count_sub+0x50/0x80
[  208.082321]  ? __pfx_kunit_try_run_case+0x10/0x10
[  208.083754]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  208.084455]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  208.085114]  kthread+0x337/0x6f0
[  208.085573]  ? trace_preempt_on+0x20/0xc0
[  208.085976]  ? __pfx_kthread+0x10/0x10
[  208.087525]  ? _raw_spin_unlock_irq+0x47/0x80
[  208.088315]  ? calculate_sigpending+0x7b/0xa0
[  208.088926]  ? __pfx_kthread+0x10/0x10
[  208.089543]  ret_from_fork+0x41/0x80
[  208.089905]  ? __pfx_kthread+0x10/0x10
[  208.090765]  ret_from_fork_asm+0x1a/0x30
[  208.091556]  </TASK>
[  208.091784] ---[ end trace 0000000000000000 ]---
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