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Date
July 9, 2025, 11:07 p.m.

Environment
qemu-x86_64 

------------[ cut here ]------------
[  140.845010] WARNING: CPU: 0 PID: 2753 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_hscale+0x125/0x190
[  140.845312] Modules linked in:
[  140.845454] CPU: 0 UID: 0 PID: 2753 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc5 #1 PREEMPT(voluntary) 
[  140.845789] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  140.845967] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  140.846233] RIP: 0010:drm_rect_calc_hscale+0x125/0x190
[  140.846409] Code: 7f 43 41 39 ce 7c 3e 48 83 c4 08 89 c8 5b 41 5c 41 5d 41 5e 5d e9 5b dc 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
[  140.848426] RSP: 0000:ffff8881048c7c78 EFLAGS: 00010286
[  140.848973] RAX: 0000000000010000 RBX: 00000000ffff0000 RCX: 00000000ffff0000
[  140.849878] RDX: 0000000000000003 RSI: 0000000000000000 RDI: ffffffff8cc337f8
[  140.850819] RBP: ffff8881048c7ca0 R08: 0000000000000000 R09: ffffed10218018c0
[  140.851669] R10: ffff88810c00c607 R11: 0000000000000000 R12: ffffffff8cc337e0
[  140.853037] R13: 0000000000000000 R14: 000000007fffffff R15: ffff8881048c7d38
[  140.853896] FS:  0000000000000000(0000) GS:ffff8881cc472000(0000) knlGS:0000000000000000
[  140.855742] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  140.856444] CR2: 00007ffff7ffe000 CR3: 000000002febc000 CR4: 00000000000006f0
[  140.857355] DR0: ffffffff8ec52440 DR1: ffffffff8ec52441 DR2: ffffffff8ec52442
[  140.857986] DR3: ffffffff8ec52443 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  140.859255] Call Trace:
[  140.859366]  <TASK>
[  140.859468]  drm_test_rect_calc_hscale+0x108/0x270
[  140.859646]  ? __pfx_drm_test_rect_calc_hscale+0x10/0x10
[  140.859840]  ? __schedule+0x10cc/0x2b60
[  140.859987]  ? __pfx_read_tsc+0x10/0x10
[  140.860145]  ? ktime_get_ts64+0x86/0x230
[  140.860295]  kunit_try_run_case+0x1a5/0x480
[  140.860445]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.860601]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  140.861175]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  140.861607]  ? __kthread_parkme+0x82/0x180
[  140.861990]  ? preempt_count_sub+0x50/0x80
[  140.862359]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.862894]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  140.863458]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  140.863995]  kthread+0x337/0x6f0
[  140.864492]  ? trace_preempt_on+0x20/0xc0
[  140.864885]  ? __pfx_kthread+0x10/0x10
[  140.865361]  ? _raw_spin_unlock_irq+0x47/0x80
[  140.865820]  ? calculate_sigpending+0x7b/0xa0
[  140.866281]  ? __pfx_kthread+0x10/0x10
[  140.866711]  ret_from_fork+0x116/0x1d0
[  140.867142]  ? __pfx_kthread+0x10/0x10
[  140.867500]  ret_from_fork_asm+0x1a/0x30
[  140.867664]  </TASK>
[  140.867911] ---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
[  140.820711] WARNING: CPU: 1 PID: 2751 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_hscale+0x125/0x190
[  140.821753] Modules linked in:
[  140.822482] CPU: 1 UID: 0 PID: 2751 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc5 #1 PREEMPT(voluntary) 
[  140.823693] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  140.823938] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  140.824925] RIP: 0010:drm_rect_calc_hscale+0x125/0x190
[  140.825419] Code: 7f 43 41 39 ce 7c 3e 48 83 c4 08 89 c8 5b 41 5c 41 5d 41 5e 5d e9 5b dc 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
[  140.826271] RSP: 0000:ffff88810e4efc78 EFLAGS: 00010286
[  140.826543] RAX: 00000000ffff0000 RBX: 00000000ffff0000 RCX: 0000000000010000
[  140.826801] RDX: 0000000000000003 RSI: 0000000000000000 RDI: ffffffff8cc337c0
[  140.827115] RBP: ffff88810e4efca0 R08: 0000000000000000 R09: ffffed10209660a0
[  140.827738] R10: ffff888104b30507 R11: 0000000000000000 R12: ffffffff8cc337a8
[  140.828322] R13: 0000000000000000 R14: 000000007fffffff R15: ffff88810e4efd38
[  140.828638] FS:  0000000000000000(0000) GS:ffff8881cc572000(0000) knlGS:0000000000000000
[  140.828978] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  140.829609] CR2: 00007ffff7ffe000 CR3: 000000002febc000 CR4: 00000000000006f0
[  140.829897] DR0: ffffffff8ec52440 DR1: ffffffff8ec52441 DR2: ffffffff8ec52443
[  140.830481] DR3: ffffffff8ec52445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  140.830896] Call Trace:
[  140.831023]  <TASK>
[  140.831309]  drm_test_rect_calc_hscale+0x108/0x270
[  140.831538]  ? __pfx_drm_test_rect_calc_hscale+0x10/0x10
[  140.831797]  ? __schedule+0x10cc/0x2b60
[  140.831982]  ? __pfx_read_tsc+0x10/0x10
[  140.832565]  ? ktime_get_ts64+0x86/0x230
[  140.832788]  kunit_try_run_case+0x1a5/0x480
[  140.832978]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.833652]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  140.833900]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  140.834362]  ? __kthread_parkme+0x82/0x180
[  140.834579]  ? preempt_count_sub+0x50/0x80
[  140.834771]  ? __pfx_kunit_try_run_case+0x10/0x10
[  140.835253]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  140.835748]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  140.836228]  kthread+0x337/0x6f0
[  140.836380]  ? trace_preempt_on+0x20/0xc0
[  140.836593]  ? __pfx_kthread+0x10/0x10
[  140.837125]  ? _raw_spin_unlock_irq+0x47/0x80
[  140.837739]  ? calculate_sigpending+0x7b/0xa0
[  140.838206]  ? __pfx_kthread+0x10/0x10
[  140.838616]  ret_from_fork+0x116/0x1d0
[  140.838963]  ? __pfx_kthread+0x10/0x10
[  140.839415]  ret_from_fork_asm+0x1a/0x30
[  140.839800]  </TASK>
[  140.840059] ---[ end trace 0000000000000000 ]---
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