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

Environment
qemu-x86_64 

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[  150.414365] WARNING: CPU: 0 PID: 2763 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  150.415709] Modules linked in:
[  150.415891] CPU: 0 UID: 0 PID: 2763 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[  150.417453] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  150.418165] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  150.419077] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  150.419746] Code: 7f 43 41 39 ce 7c 3e 48 83 c4 08 89 c8 5b 41 5c 41 5d 41 5e 5d e9 80 cf 1e 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
[  150.421612] RSP: 0000:ffff888103a57c78 EFLAGS: 00010286
[  150.421844] RAX: 00000000ffff0000 RBX: 00000000ffff0000 RCX: 0000000000010000
[  150.422797] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffff8ba3275c
[  150.423711] RBP: ffff888103a57ca0 R08: 0000000000000000 R09: ffffed1020558500
[  150.424625] R10: ffff888102ac2807 R11: 0000000000000000 R12: ffffffff8ba32748
[  150.425249] R13: 0000000000000000 R14: 000000007fffffff R15: ffff888103a57d38
[  150.425479] FS:  0000000000000000(0000) GS:ffff8881cd674000(0000) knlGS:0000000000000000
[  150.425782] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  150.426057] CR2: 00007ffff7ffe000 CR3: 0000000069cbc000 CR4: 00000000000006f0
[  150.426384] DR0: ffffffff8da50440 DR1: ffffffff8da50441 DR2: ffffffff8da50442
[  150.426630] DR3: ffffffff8da50443 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  150.427387] Call Trace:
[  150.427535]  <TASK>
[  150.427687]  drm_test_rect_calc_vscale+0x108/0x270
[  150.428245]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  150.428540]  ? __schedule+0x10cc/0x2b60
[  150.428708]  ? __pfx_read_tsc+0x10/0x10
[  150.428942]  ? ktime_get_ts64+0x86/0x230
[  150.429253]  kunit_try_run_case+0x1a5/0x480
[  150.429505]  ? __pfx_kunit_try_run_case+0x10/0x10
[  150.429798]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  150.430096]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  150.430583]  ? __kthread_parkme+0x82/0x180
[  150.430863]  ? preempt_count_sub+0x50/0x80
[  150.431260]  ? __pfx_kunit_try_run_case+0x10/0x10
[  150.431475]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  150.432282]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  150.432605]  kthread+0x337/0x6f0
[  150.432776]  ? trace_preempt_on+0x20/0xc0
[  150.433116]  ? __pfx_kthread+0x10/0x10
[  150.433329]  ? _raw_spin_unlock_irq+0x47/0x80
[  150.433577]  ? calculate_sigpending+0x7b/0xa0
[  150.433777]  ? __pfx_kthread+0x10/0x10
[  150.433994]  ret_from_fork+0x116/0x1d0
[  150.434232]  ? __pfx_kthread+0x10/0x10
[  150.434419]  ret_from_fork_asm+0x1a/0x30
[  150.434768]  </TASK>
[  150.434914] ---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
[  150.441400] WARNING: CPU: 0 PID: 2765 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  150.442144] Modules linked in:
[  150.442336] CPU: 0 UID: 0 PID: 2765 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[  150.442913] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  150.443263] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  150.443720] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  150.444722] Code: 7f 43 41 39 ce 7c 3e 48 83 c4 08 89 c8 5b 41 5c 41 5d 41 5e 5d e9 80 cf 1e 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
[  150.446736] RSP: 0000:ffff88810395fc78 EFLAGS: 00010286
[  150.448219] RAX: 0000000000010000 RBX: 00000000ffff0000 RCX: 00000000ffff0000
[  150.449026] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffff8ba32794
[  150.450124] RBP: ffff88810395fca0 R08: 0000000000000000 R09: ffffed1020c9a6a0
[  150.450357] R10: ffff8881064d3507 R11: 0000000000000000 R12: ffffffff8ba32780
[  150.450651] R13: 0000000000000000 R14: 000000007fffffff R15: ffff88810395fd38
[  150.451414] FS:  0000000000000000(0000) GS:ffff8881cd674000(0000) knlGS:0000000000000000
[  150.451750] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  150.452516] CR2: 00007ffff7ffe000 CR3: 0000000069cbc000 CR4: 00000000000006f0
[  150.453444] DR0: ffffffff8da50440 DR1: ffffffff8da50441 DR2: ffffffff8da50442
[  150.454356] DR3: ffffffff8da50443 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  150.454651] Call Trace:
[  150.454779]  <TASK>
[  150.454899]  drm_test_rect_calc_vscale+0x108/0x270
[  150.455116]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  150.455307]  ? __schedule+0x10cc/0x2b60
[  150.455462]  ? __pfx_read_tsc+0x10/0x10
[  150.455625]  ? ktime_get_ts64+0x86/0x230
[  150.455779]  kunit_try_run_case+0x1a5/0x480
[  150.455939]  ? __pfx_kunit_try_run_case+0x10/0x10
[  150.456109]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  150.456280]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  150.456463]  ? __kthread_parkme+0x82/0x180
[  150.457271]  ? preempt_count_sub+0x50/0x80
[  150.457998]  ? __pfx_kunit_try_run_case+0x10/0x10
[  150.458459]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  150.459404]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  150.460405]  kthread+0x337/0x6f0
[  150.460887]  ? trace_preempt_on+0x20/0xc0
[  150.461437]  ? __pfx_kthread+0x10/0x10
[  150.461890]  ? _raw_spin_unlock_irq+0x47/0x80
[  150.462530]  ? calculate_sigpending+0x7b/0xa0
[  150.463122]  ? __pfx_kthread+0x10/0x10
[  150.463584]  ret_from_fork+0x116/0x1d0
[  150.464115]  ? __pfx_kthread+0x10/0x10
[  150.464552]  ret_from_fork_asm+0x1a/0x30
[  150.465188]  </TASK>
[  150.465541] ---[ end trace 0000000000000000 ]---
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