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Date
July 4, 2025, 3:11 p.m.

Environment
qemu-x86_64 

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[  165.337187] WARNING: CPU: 1 PID: 2743 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  165.337628] Modules linked in:
[  165.337911] CPU: 1 UID: 0 PID: 2743 Comm: kunit_try_catch Tainted: G    B D W        N  6.15.5-rc2 #1 PREEMPT(voluntary) 
[  165.339560] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  165.339846] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  165.341042] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  165.341782] Code: 7f 43 41 39 ce 7c 3e 48 83 c4 08 89 c8 5b 41 5c 41 5d 41 5e 5d e9 40 c3 1a 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
[  165.342964] RSP: 0000:ffff8881042e7c78 EFLAGS: 00010286
[  165.343338] RAX: 0000000000010000 RBX: 00000000ffff0000 RCX: 00000000ffff0000
[  165.344035] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffffb8824094
[  165.344599] RBP: ffff8881042e7ca0 R08: 0000000000000000 R09: ffffed1020dd0c80
[  165.345053] R10: ffff888106e86407 R11: 0000000000000000 R12: ffffffffb8824080
[  165.346108] R13: 0000000000000000 R14: 000000007fffffff R15: ffff8881042e7d38
[  165.346603] FS:  0000000000000000(0000) GS:ffff8881a0992000(0000) knlGS:0000000000000000
[  165.347091] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  165.347373] CR2: 00007ffff7ffe000 CR3: 0000000013aba000 CR4: 00000000000006f0
[  165.347978] DR0: ffffffffba831900 DR1: ffffffffba831901 DR2: ffffffffba831903
[  165.348529] DR3: ffffffffba831905 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  165.349154] Call Trace:
[  165.349431]  <TASK>
[  165.350187]  drm_test_rect_calc_vscale+0x108/0x270
[  165.350465]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  165.350966]  ? __schedule+0x10cc/0x2b60
[  165.351506]  ? __pfx_read_tsc+0x10/0x10
[  165.351817]  ? ktime_get_ts64+0x86/0x230
[  165.352185]  kunit_try_run_case+0x1a5/0x480
[  165.352459]  ? __pfx_kunit_try_run_case+0x10/0x10
[  165.353074]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  165.353938]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  165.354537]  ? __kthread_parkme+0x82/0x180
[  165.354799]  ? preempt_count_sub+0x50/0x80
[  165.355113]  ? __pfx_kunit_try_run_case+0x10/0x10
[  165.355726]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  165.355994]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  165.356504]  kthread+0x337/0x6f0
[  165.356688]  ? trace_preempt_on+0x20/0xc0
[  165.357163]  ? __pfx_kthread+0x10/0x10
[  165.357705]  ? _raw_spin_unlock_irq+0x47/0x80
[  165.358006]  ? calculate_sigpending+0x7b/0xa0
[  165.358852]  ? __pfx_kthread+0x10/0x10
[  165.359197]  ret_from_fork+0x41/0x80
[  165.359704]  ? __pfx_kthread+0x10/0x10
[  165.359913]  ret_from_fork_asm+0x1a/0x30
[  165.360508]  </TASK>
[  165.360714] ---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
[  165.306082] WARNING: CPU: 1 PID: 2741 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  165.307155] Modules linked in:
[  165.307926] CPU: 1 UID: 0 PID: 2741 Comm: kunit_try_catch Tainted: G    B D W        N  6.15.5-rc2 #1 PREEMPT(voluntary) 
[  165.308567] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  165.308869] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  165.311241] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  165.311976] Code: 7f 43 41 39 ce 7c 3e 48 83 c4 08 89 c8 5b 41 5c 41 5d 41 5e 5d e9 40 c3 1a 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
[  165.313160] RSP: 0000:ffff888102f77c78 EFLAGS: 00010286
[  165.313618] RAX: 00000000ffff0000 RBX: 00000000ffff0000 RCX: 0000000000010000
[  165.314131] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffffb882405c
[  165.314546] RBP: ffff888102f77ca0 R08: 0000000000000000 R09: ffffed1020dd0c40
[  165.315079] R10: ffff888106e86207 R11: 0000000000000000 R12: ffffffffb8824048
[  165.315777] R13: 0000000000000000 R14: 000000007fffffff R15: ffff888102f77d38
[  165.316206] FS:  0000000000000000(0000) GS:ffff8881a0992000(0000) knlGS:0000000000000000
[  165.316692] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  165.317192] CR2: 00007ffff7ffe000 CR3: 0000000013aba000 CR4: 00000000000006f0
[  165.317691] DR0: ffffffffba831900 DR1: ffffffffba831901 DR2: ffffffffba831903
[  165.318228] DR3: ffffffffba831905 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  165.318672] Call Trace:
[  165.319660]  <TASK>
[  165.320191]  drm_test_rect_calc_vscale+0x108/0x270
[  165.320771]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  165.321481]  ? __schedule+0x10cc/0x2b60
[  165.321718]  ? __pfx_read_tsc+0x10/0x10
[  165.322090]  ? ktime_get_ts64+0x86/0x230
[  165.322751]  kunit_try_run_case+0x1a5/0x480
[  165.323845]  ? __pfx_kunit_try_run_case+0x10/0x10
[  165.324146]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  165.324485]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  165.324782]  ? __kthread_parkme+0x82/0x180
[  165.325038]  ? preempt_count_sub+0x50/0x80
[  165.326179]  ? __pfx_kunit_try_run_case+0x10/0x10
[  165.326486]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  165.326951]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  165.327684]  kthread+0x337/0x6f0
[  165.327967]  ? trace_preempt_on+0x20/0xc0
[  165.328224]  ? __pfx_kthread+0x10/0x10
[  165.328790]  ? _raw_spin_unlock_irq+0x47/0x80
[  165.329054]  ? calculate_sigpending+0x7b/0xa0
[  165.329253]  ? __pfx_kthread+0x10/0x10
[  165.329622]  ret_from_fork+0x41/0x80
[  165.329975]  ? __pfx_kthread+0x10/0x10
[  165.330493]  ret_from_fork_asm+0x1a/0x30
[  165.330753]  </TASK>
[  165.330991] ---[ end trace 0000000000000000 ]---
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