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Date
July 2, 2025, 11:09 p.m.

Environment
qemu-x86_64 

------------[ cut here ]------------
[  140.823407] WARNING: CPU: 1 PID: 2753 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_hscale+0x125/0x190
[  140.823858] Modules linked in:
[  140.824058] CPU: 1 UID: 0 PID: 2753 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[  140.824447] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  140.824711] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  140.825094] RIP: 0010:drm_rect_calc_hscale+0x125/0x190
[  140.826027] 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
[  140.827187] RSP: 0000:ffff88810af9fc78 EFLAGS: 00010286
[  140.827454] RAX: 00000000ffff0000 RBX: 00000000ffff0000 RCX: 0000000000010000
[  140.828007] RDX: 0000000000000003 RSI: 0000000000000000 RDI: ffffffff8ae32760
[  140.828470] RBP: ffff88810af9fca0 R08: 0000000000000000 R09: ffffed1020a15de0
[  140.829055] R10: ffff8881050aef07 R11: 0000000000000000 R12: ffffffff8ae32748
[  140.829507] R13: 0000000000000000 R14: 000000007fffffff R15: ffff88810af9fd38
[  140.829959] FS:  0000000000000000(0000) GS:ffff8881ce374000(0000) knlGS:0000000000000000
[  140.830280] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  140.830531] CR2: 00007ffff7ffe000 CR3: 00000001356bc000 CR4: 00000000000006f0
[  140.830818] DR0: ffffffff8ce50444 DR1: ffffffff8ce50449 DR2: ffffffff8ce5044a
[  140.831107] DR3: ffffffff8ce5044b DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  140.831861] Call Trace:
[  140.832025]  <TASK>
[  140.832132]  drm_test_rect_calc_hscale+0x108/0x270
[  140.832817]  ? __pfx_drm_test_rect_calc_hscale+0x10/0x10
[  140.833203]  ? __schedule+0x10cc/0x2b60
[  140.833533]  ? __pfx_read_tsc+0x10/0x10
[  140.833916]  ? ktime_get_ts64+0x86/0x230
[  140.834096]  kunit_try_run_case+0x1a5/0x480
[  140.834316]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.834551]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  140.834781]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  140.835004]  ? __kthread_parkme+0x82/0x180
[  140.835212]  ? preempt_count_sub+0x50/0x80
[  140.835935]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.836173]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  140.836978]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  140.837253]  kthread+0x337/0x6f0
[  140.837443]  ? trace_preempt_on+0x20/0xc0
[  140.837643]  ? __pfx_kthread+0x10/0x10
[  140.837826]  ? _raw_spin_unlock_irq+0x47/0x80
[  140.838032]  ? calculate_sigpending+0x7b/0xa0
[  140.838229]  ? __pfx_kthread+0x10/0x10
[  140.838408]  ret_from_fork+0x116/0x1d0
[  140.838593]  ? __pfx_kthread+0x10/0x10
[  140.838771]  ret_from_fork_asm+0x1a/0x30
[  140.838973]  </TASK>
[  140.839092] ---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
[  140.842542] WARNING: CPU: 0 PID: 2755 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_hscale+0x125/0x190
[  140.843536] Modules linked in:
[  140.843993] CPU: 0 UID: 0 PID: 2755 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[  140.844838] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  140.845090] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  140.845745] RIP: 0010:drm_rect_calc_hscale+0x125/0x190
[  140.845963] 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
[  140.847451] RSP: 0000:ffff88810a7cfc78 EFLAGS: 00010286
[  140.847865] RAX: 0000000000010000 RBX: 00000000ffff0000 RCX: 00000000ffff0000
[  140.848216] RDX: 0000000000000003 RSI: 0000000000000000 RDI: ffffffff8ae32798
[  140.848517] RBP: ffff88810a7cfca0 R08: 0000000000000000 R09: ffffed1020dfdd80
[  140.848904] R10: ffff888106feec07 R11: 0000000000000000 R12: ffffffff8ae32780
[  140.849317] R13: 0000000000000000 R14: 000000007fffffff R15: ffff88810a7cfd38
[  140.849762] FS:  0000000000000000(0000) GS:ffff8881ce274000(0000) knlGS:0000000000000000
[  140.850072] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  140.850344] CR2: 00007ffff7ffe000 CR3: 00000001356bc000 CR4: 00000000000006f0
[  140.850883] DR0: ffffffff8ce50440 DR1: ffffffff8ce50441 DR2: ffffffff8ce50443
[  140.851255] DR3: ffffffff8ce50445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  140.851479] Call Trace:
[  140.851884]  <TASK>
[  140.852099]  drm_test_rect_calc_hscale+0x108/0x270
[  140.852385]  ? __pfx_drm_test_rect_calc_hscale+0x10/0x10
[  140.852656]  ? __schedule+0x10cc/0x2b60
[  140.853148]  ? __pfx_read_tsc+0x10/0x10
[  140.853366]  ? ktime_get_ts64+0x86/0x230
[  140.853784]  kunit_try_run_case+0x1a5/0x480
[  140.854043]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.854267]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  140.854496]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  140.854713]  ? __kthread_parkme+0x82/0x180
[  140.854893]  ? preempt_count_sub+0x50/0x80
[  140.855276]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.855480]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  140.855657]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  140.855962]  kthread+0x337/0x6f0
[  140.856146]  ? trace_preempt_on+0x20/0xc0
[  140.856498]  ? __pfx_kthread+0x10/0x10
[  140.857094]  ? _raw_spin_unlock_irq+0x47/0x80
[  140.857280]  ? calculate_sigpending+0x7b/0xa0
[  140.857523]  ? __pfx_kthread+0x10/0x10
[  140.858131]  ret_from_fork+0x116/0x1d0
[  140.858349]  ? __pfx_kthread+0x10/0x10
[  140.858534]  ret_from_fork_asm+0x1a/0x30
[  140.859008]  </TASK>
[  140.859219] ---[ end trace 0000000000000000 ]---
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