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Date
July 1, 2025, 11:08 a.m.

Environment
qemu-x86_64 

------------[ cut here ]------------
[  150.347124] WARNING: CPU: 0 PID: 2751 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_hscale+0x125/0x190
[  150.347839] Modules linked in:
[  150.348050] CPU: 0 UID: 0 PID: 2751 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[  150.348891] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  150.349280] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  150.349643] RIP: 0010:drm_rect_calc_hscale+0x125/0x190
[  150.350141] 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
[  150.351251] RSP: 0000:ffff888103b27c78 EFLAGS: 00010286
[  150.351563] RAX: 00000000ffff0000 RBX: 00000000ffff0000 RCX: 0000000000010000
[  150.351850] RDX: 0000000000000003 RSI: 0000000000000000 RDI: ffffffff8ba32760
[  150.352409] RBP: ffff888103b27ca0 R08: 0000000000000000 R09: ffffed1020558460
[  150.352806] R10: ffff888102ac2307 R11: 0000000000000000 R12: ffffffff8ba32748
[  150.353297] R13: 0000000000000000 R14: 000000007fffffff R15: ffff888103b27d38
[  150.353591] FS:  0000000000000000(0000) GS:ffff8881cd674000(0000) knlGS:0000000000000000
[  150.354571] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  150.354845] CR2: 00007ffff7ffe000 CR3: 0000000069cbc000 CR4: 00000000000006f0
[  150.355545] DR0: ffffffff8da50440 DR1: ffffffff8da50441 DR2: ffffffff8da50442
[  150.355920] DR3: ffffffff8da50443 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  150.356742] Call Trace:
[  150.356892]  <TASK>
[  150.357010]  drm_test_rect_calc_hscale+0x108/0x270
[  150.357656]  ? __pfx_drm_test_rect_calc_hscale+0x10/0x10
[  150.357895]  ? __schedule+0x10cc/0x2b60
[  150.358223]  ? __pfx_read_tsc+0x10/0x10
[  150.358429]  ? ktime_get_ts64+0x86/0x230
[  150.358659]  kunit_try_run_case+0x1a5/0x480
[  150.358844]  ? __pfx_kunit_try_run_case+0x10/0x10
[  150.359087]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  150.359250]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  150.359606]  ? __kthread_parkme+0x82/0x180
[  150.360253]  ? preempt_count_sub+0x50/0x80
[  150.360426]  ? __pfx_kunit_try_run_case+0x10/0x10
[  150.360693]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  150.360966]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  150.361340]  kthread+0x337/0x6f0
[  150.361594]  ? trace_preempt_on+0x20/0xc0
[  150.362293]  ? __pfx_kthread+0x10/0x10
[  150.362492]  ? _raw_spin_unlock_irq+0x47/0x80
[  150.362799]  ? calculate_sigpending+0x7b/0xa0
[  150.363277]  ? __pfx_kthread+0x10/0x10
[  150.363759]  ret_from_fork+0x116/0x1d0
[  150.364076]  ? __pfx_kthread+0x10/0x10
[  150.364558]  ret_from_fork_asm+0x1a/0x30
[  150.365598]  </TASK>
[  150.365838] ---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
[  150.370402] WARNING: CPU: 1 PID: 2753 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_hscale+0x125/0x190
[  150.371312] Modules linked in:
[  150.371515] CPU: 1 UID: 0 PID: 2753 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[  150.371861] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  150.372046] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  150.372321] RIP: 0010:drm_rect_calc_hscale+0x125/0x190
[  150.372783] 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
[  150.374717] RSP: 0000:ffff88810637fc78 EFLAGS: 00010286
[  150.375417] RAX: 0000000000010000 RBX: 00000000ffff0000 RCX: 00000000ffff0000
[  150.376112] RDX: 0000000000000003 RSI: 0000000000000000 RDI: ffffffff8ba32798
[  150.376886] RBP: ffff88810637fca0 R08: 0000000000000000 R09: ffffed1020a0fbe0
[  150.377784] R10: ffff88810507df07 R11: 0000000000000000 R12: ffffffff8ba32780
[  150.378531] R13: 0000000000000000 R14: 000000007fffffff R15: ffff88810637fd38
[  150.379061] FS:  0000000000000000(0000) GS:ffff8881cd774000(0000) knlGS:0000000000000000
[  150.379491] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  150.379761] CR2: 00007ffff7ffe000 CR3: 0000000069cbc000 CR4: 00000000000006f0
[  150.380619] DR0: ffffffff8da50440 DR1: ffffffff8da50441 DR2: ffffffff8da50443
[  150.381351] DR3: ffffffff8da50445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  150.382070] Call Trace:
[  150.382314]  <TASK>
[  150.382561]  drm_test_rect_calc_hscale+0x108/0x270
[  150.383074]  ? __pfx_drm_test_rect_calc_hscale+0x10/0x10
[  150.383278]  ? __schedule+0x10cc/0x2b60
[  150.383437]  ? __pfx_read_tsc+0x10/0x10
[  150.383812]  ? ktime_get_ts64+0x86/0x230
[  150.384283]  kunit_try_run_case+0x1a5/0x480
[  150.384815]  ? __pfx_kunit_try_run_case+0x10/0x10
[  150.385385]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  150.385993]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  150.386472]  ? __kthread_parkme+0x82/0x180
[  150.386899]  ? preempt_count_sub+0x50/0x80
[  150.387407]  ? __pfx_kunit_try_run_case+0x10/0x10
[  150.387870]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  150.388448]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  150.389217]  kthread+0x337/0x6f0
[  150.389622]  ? trace_preempt_on+0x20/0xc0
[  150.390097]  ? __pfx_kthread+0x10/0x10
[  150.390565]  ? _raw_spin_unlock_irq+0x47/0x80
[  150.391423]  ? calculate_sigpending+0x7b/0xa0
[  150.392001]  ? __pfx_kthread+0x10/0x10
[  150.392262]  ret_from_fork+0x116/0x1d0
[  150.392416]  ? __pfx_kthread+0x10/0x10
[  150.392593]  ret_from_fork_asm+0x1a/0x30
[  150.393048]  </TASK>
[  150.393283] ---[ end trace 0000000000000000 ]---
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