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Date
July 23, 2025, 2:10 a.m.

Environment
qemu-x86_64 

------------[ cut here ]------------
[  145.910163] WARNING: CPU: 0 PID: 2763 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  145.911135] Modules linked in:
[  145.911476] CPU: 0 UID: 0 PID: 2763 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc7 #1 PREEMPT(voluntary) 
[  145.912182] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  145.912806] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  145.913426] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  145.913901] 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
[  145.915122] RSP: 0000:ffff888102907c78 EFLAGS: 00010286
[  145.915665] RAX: 00000000ffff0000 RBX: 00000000ffff0000 RCX: 0000000000010000
[  145.916077] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffff91a33d3c
[  145.916539] RBP: ffff888102907ca0 R08: 0000000000000000 R09: ffffed10208753c0
[  145.917159] R10: ffff8881043a9e07 R11: 0000000000000000 R12: ffffffff91a33d28
[  145.917739] R13: 0000000000000000 R14: 000000007fffffff R15: ffff888102907d38
[  145.917965] FS:  0000000000000000(0000) GS:ffff8881c7672000(0000) knlGS:0000000000000000
[  145.918320] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  145.918884] CR2: 00007ffff7ffe000 CR3: 00000001596bc000 CR4: 00000000000006f0
[  145.919630] DR0: ffffffff93a52440 DR1: ffffffff93a52441 DR2: ffffffff93a52442
[  145.920322] DR3: ffffffff93a52443 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  145.921021] Call Trace:
[  145.921177]  <TASK>
[  145.921573]  drm_test_rect_calc_vscale+0x108/0x270
[  145.921880]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  145.922079]  ? __schedule+0x10c6/0x2b60
[  145.922283]  ? __pfx_read_tsc+0x10/0x10
[  145.922727]  ? ktime_get_ts64+0x86/0x230
[  145.923142]  kunit_try_run_case+0x1a5/0x480
[  145.923635]  ? __pfx_kunit_try_run_case+0x10/0x10
[  145.924093]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  145.924632]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  145.924814]  ? __kthread_parkme+0x82/0x180
[  145.924964]  ? preempt_count_sub+0x50/0x80
[  145.925135]  ? __pfx_kunit_try_run_case+0x10/0x10
[  145.925319]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  145.925585]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  145.926321]  kthread+0x337/0x6f0
[  145.926642]  ? trace_preempt_on+0x20/0xc0
[  145.926979]  ? __pfx_kthread+0x10/0x10
[  145.927138]  ? _raw_spin_unlock_irq+0x47/0x80
[  145.927517]  ? calculate_sigpending+0x7b/0xa0
[  145.927984]  ? __pfx_kthread+0x10/0x10
[  145.928398]  ret_from_fork+0x116/0x1d0
[  145.928823]  ? __pfx_kthread+0x10/0x10
[  145.929077]  ret_from_fork_asm+0x1a/0x30
[  145.929344]  </TASK>
[  145.929594] ---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
[  145.933820] WARNING: CPU: 0 PID: 2765 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  145.934165] Modules linked in:
[  145.934739] CPU: 0 UID: 0 PID: 2765 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc7 #1 PREEMPT(voluntary) 
[  145.935931] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  145.936770] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  145.937642] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  145.938054] 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
[  145.939502] RSP: 0000:ffff8881045dfc78 EFLAGS: 00010286
[  145.939687] RAX: 0000000000010000 RBX: 00000000ffff0000 RCX: 00000000ffff0000
[  145.939893] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffff91a33d74
[  145.940135] RBP: ffff8881045dfca0 R08: 0000000000000000 R09: ffffed10207461e0
[  145.940636] R10: ffff888103a30f07 R11: 0000000000000000 R12: ffffffff91a33d60
[  145.941073] R13: 0000000000000000 R14: 000000007fffffff R15: ffff8881045dfd38
[  145.941390] FS:  0000000000000000(0000) GS:ffff8881c7672000(0000) knlGS:0000000000000000
[  145.941860] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  145.942299] CR2: 00007ffff7ffe000 CR3: 00000001596bc000 CR4: 00000000000006f0
[  145.942621] DR0: ffffffff93a52440 DR1: ffffffff93a52441 DR2: ffffffff93a52442
[  145.942930] DR3: ffffffff93a52443 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  145.943380] Call Trace:
[  145.943559]  <TASK>
[  145.943695]  drm_test_rect_calc_vscale+0x108/0x270
[  145.944029]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  145.944453]  ? __schedule+0x10c6/0x2b60
[  145.944744]  ? __pfx_read_tsc+0x10/0x10
[  145.944967]  ? ktime_get_ts64+0x86/0x230
[  145.945286]  kunit_try_run_case+0x1a5/0x480
[  145.945588]  ? __pfx_kunit_try_run_case+0x10/0x10
[  145.945813]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  145.946064]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  145.946547]  ? __kthread_parkme+0x82/0x180
[  145.946830]  ? preempt_count_sub+0x50/0x80
[  145.947072]  ? __pfx_kunit_try_run_case+0x10/0x10
[  145.947557]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  145.947815]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  145.948118]  kthread+0x337/0x6f0
[  145.948300]  ? trace_preempt_on+0x20/0xc0
[  145.948499]  ? __pfx_kthread+0x10/0x10
[  145.948697]  ? _raw_spin_unlock_irq+0x47/0x80
[  145.948914]  ? calculate_sigpending+0x7b/0xa0
[  145.949350]  ? __pfx_kthread+0x10/0x10
[  145.949510]  ret_from_fork+0x116/0x1d0
[  145.949702]  ? __pfx_kthread+0x10/0x10
[  145.950027]  ret_from_fork_asm+0x1a/0x30
[  145.950444]  </TASK>
[  145.950579] ---[ end trace 0000000000000000 ]---
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