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Date
July 9, 2025, 12:11 a.m.

Environment
qemu-x86_64 

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[  140.970752] WARNING: CPU: 0 PID: 2765 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  140.972323] Modules linked in:
[  140.972545] CPU: 0 UID: 0 PID: 2765 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc5 #1 PREEMPT(voluntary) 
[  140.972878] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  140.973053] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  140.974162] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  140.974765] 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
[  140.975899] RSP: 0000:ffff888110e8fc78 EFLAGS: 00010286
[  140.976688] RAX: 0000000000010000 RBX: 00000000ffff0000 RCX: 00000000ffff0000
[  140.977565] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffff928337f4
[  140.977787] RBP: ffff888110e8fca0 R08: 0000000000000000 R09: ffffed1021c32120
[  140.978298] R10: ffff88810e190907 R11: 0000000000000000 R12: ffffffff928337e0
[  140.978869] R13: 0000000000000000 R14: 000000007fffffff R15: ffff888110e8fd38
[  140.979681] FS:  0000000000000000(0000) GS:ffff8881c6872000(0000) knlGS:0000000000000000
[  140.980167] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  140.980590] CR2: 00007ffff7ffe000 CR3: 00000001088bc000 CR4: 00000000000006f0
[  140.981044] DR0: ffffffff94852440 DR1: ffffffff94852441 DR2: ffffffff94852443
[  140.981351] DR3: ffffffff94852445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  140.981863] Call Trace:
[  140.982165]  <TASK>
[  140.982426]  drm_test_rect_calc_vscale+0x108/0x270
[  140.982654]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  140.983862]  ? __schedule+0x10cc/0x2b60
[  140.984041]  ? __pfx_read_tsc+0x10/0x10
[  140.984200]  ? ktime_get_ts64+0x86/0x230
[  140.984342]  kunit_try_run_case+0x1a5/0x480
[  140.984487]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.985598]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  140.985810]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  140.986039]  ? __kthread_parkme+0x82/0x180
[  140.987166]  ? preempt_count_sub+0x50/0x80
[  140.987357]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.988409]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  140.988609]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  140.988803]  kthread+0x337/0x6f0
[  140.988925]  ? trace_preempt_on+0x20/0xc0
[  140.989079]  ? __pfx_kthread+0x10/0x10
[  140.989213]  ? _raw_spin_unlock_irq+0x47/0x80
[  140.989361]  ? calculate_sigpending+0x7b/0xa0
[  140.989505]  ? __pfx_kthread+0x10/0x10
[  140.989636]  ret_from_fork+0x116/0x1d0
[  140.989764]  ? __pfx_kthread+0x10/0x10
[  140.989894]  ret_from_fork_asm+0x1a/0x30
[  140.990037]  </TASK>
[  140.991316] ---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
[  140.950432] WARNING: CPU: 0 PID: 2763 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  140.950886] Modules linked in:
[  140.951919] CPU: 0 UID: 0 PID: 2763 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc5 #1 PREEMPT(voluntary) 
[  140.952456] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  140.952835] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  140.953402] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  140.953835] 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
[  140.954850] RSP: 0000:ffff888110de7c78 EFLAGS: 00010286
[  140.955392] RAX: 00000000ffff0000 RBX: 00000000ffff0000 RCX: 0000000000010000
[  140.955781] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffff928337bc
[  140.956269] RBP: ffff888110de7ca0 R08: 0000000000000000 R09: ffffed1021c32100
[  140.956660] R10: ffff88810e190807 R11: 0000000000000000 R12: ffffffff928337a8
[  140.956969] R13: 0000000000000000 R14: 000000007fffffff R15: ffff888110de7d38
[  140.957397] FS:  0000000000000000(0000) GS:ffff8881c6872000(0000) knlGS:0000000000000000
[  140.957746] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  140.958006] CR2: 00007ffff7ffe000 CR3: 00000001088bc000 CR4: 00000000000006f0
[  140.958419] DR0: ffffffff94852440 DR1: ffffffff94852441 DR2: ffffffff94852443
[  140.958711] DR3: ffffffff94852445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  140.959050] Call Trace:
[  140.959340]  <TASK>
[  140.959478]  drm_test_rect_calc_vscale+0x108/0x270
[  140.959842]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  140.960301]  ? __schedule+0x10cc/0x2b60
[  140.960516]  ? __pfx_read_tsc+0x10/0x10
[  140.960767]  ? ktime_get_ts64+0x86/0x230
[  140.961128]  kunit_try_run_case+0x1a5/0x480
[  140.961336]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.961641]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  140.961971]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  140.962453]  ? __kthread_parkme+0x82/0x180
[  140.962746]  ? preempt_count_sub+0x50/0x80
[  140.963168]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.963409]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  140.963664]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  140.963892]  kthread+0x337/0x6f0
[  140.964158]  ? trace_preempt_on+0x20/0xc0
[  140.964601]  ? __pfx_kthread+0x10/0x10
[  140.964777]  ? _raw_spin_unlock_irq+0x47/0x80
[  140.965135]  ? calculate_sigpending+0x7b/0xa0
[  140.965400]  ? __pfx_kthread+0x10/0x10
[  140.965560]  ret_from_fork+0x116/0x1d0
[  140.965874]  ? __pfx_kthread+0x10/0x10
[  140.966360]  ret_from_fork_asm+0x1a/0x30
[  140.966609]  </TASK>
[  140.966707] ---[ end trace 0000000000000000 ]---
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