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Date
April 20, 2025, 11:09 p.m.

Environment
qemu-x86_64 

------------[ cut here ]------------
[  136.452865] WARNING: CPU: 1 PID: 2731 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_hscale+0x125/0x190
[  136.453306] Modules linked in:
[  136.453491] CPU: 1 UID: 0 PID: 2731 Comm: kunit_try_catch Tainted: G    B D W        N  6.15.0-rc3 #1 PREEMPT(voluntary) 
[  136.454140] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  136.454809] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  136.455222] RIP: 0010:drm_rect_calc_hscale+0x125/0x190
[  136.455721] 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
[  136.456493] RSP: 0000:ffff88810351fc78 EFLAGS: 00010286
[  136.456728] RAX: 0000000000010000 RBX: 00000000ffff0000 RCX: 00000000ffff0000
[  136.457005] RDX: 0000000000000003 RSI: 0000000000000000 RDI: ffffffff8b0232b8
[  136.457367] RBP: ffff88810351fca0 R08: 0000000000000000 R09: ffffed1020d29c00
[  136.457663] R10: ffff88810694e007 R11: 0000000000000000 R12: ffffffff8b0232a0
[  136.458072] R13: 0000000000000000 R14: 000000007fffffff R15: ffff88810351fd38
[  136.458340] FS:  0000000000000000(0000) GS:ffff8881ce13b000(0000) knlGS:0000000000000000
[  136.458710] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  136.459082] CR2: 00007ffff7ffe000 CR3: 000000013ecba000 CR4: 00000000000006f0
[  136.459498] DR0: ffffffff8d088880 DR1: ffffffff8d088881 DR2: ffffffff8d088883
[  136.459783] DR3: ffffffff8d088885 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  136.460043] Call Trace:
[  136.460179]  <TASK>
[  136.460300]  drm_test_rect_calc_hscale+0x108/0x270
[  136.460575]  ? __pfx_drm_test_rect_calc_hscale+0x10/0x10
[  136.460822]  ? __schedule+0x10cc/0x2b30
[  136.461017]  ? __pfx_read_tsc+0x10/0x10
[  136.461597]  ? ktime_get_ts64+0x86/0x230
[  136.461810]  kunit_try_run_case+0x1a5/0x480
[  136.462007]  ? __pfx_kunit_try_run_case+0x10/0x10
[  136.462597]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  136.463009]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  136.463554]  ? __kthread_parkme+0x82/0x180
[  136.463775]  ? preempt_count_sub+0x50/0x80
[  136.463971]  ? __pfx_kunit_try_run_case+0x10/0x10
[  136.464382]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  136.464876]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  136.465337]  kthread+0x337/0x6f0
[  136.465760]  ? trace_preempt_on+0x20/0xc0
[  136.465962]  ? __pfx_kthread+0x10/0x10
[  136.466191]  ? _raw_spin_unlock_irq+0x47/0x80
[  136.466715]  ? calculate_sigpending+0x7b/0xa0
[  136.467114]  ? __pfx_kthread+0x10/0x10
[  136.467370]  ret_from_fork+0x41/0x80
[  136.467925]  ? __pfx_kthread+0x10/0x10
[  136.468241]  ret_from_fork_asm+0x1a/0x30
[  136.468760]  </TASK>
[  136.468909] ---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
[  136.431213] WARNING: CPU: 1 PID: 2729 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_hscale+0x125/0x190
[  136.432205] Modules linked in:
[  136.432463] CPU: 1 UID: 0 PID: 2729 Comm: kunit_try_catch Tainted: G    B D W        N  6.15.0-rc3 #1 PREEMPT(voluntary) 
[  136.433331] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  136.433943] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  136.434595] RIP: 0010:drm_rect_calc_hscale+0x125/0x190
[  136.435003] 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
[  136.436521] RSP: 0000:ffff888106f8fc78 EFLAGS: 00010286
[  136.436799] RAX: 00000000ffff0000 RBX: 00000000ffff0000 RCX: 0000000000010000
[  136.437093] RDX: 0000000000000003 RSI: 0000000000000000 RDI: ffffffff8b023280
[  136.437421] RBP: ffff888106f8fca0 R08: 0000000000000000 R09: ffffed1020eaadc0
[  136.437714] R10: ffff888107556e07 R11: 0000000000000000 R12: ffffffff8b023268
[  136.438009] R13: 0000000000000000 R14: 000000007fffffff R15: ffff888106f8fd38
[  136.438765] FS:  0000000000000000(0000) GS:ffff8881ce13b000(0000) knlGS:0000000000000000
[  136.439257] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  136.439791] CR2: 00007ffff7ffe000 CR3: 000000013ecba000 CR4: 00000000000006f0
[  136.440182] DR0: ffffffff8d088880 DR1: ffffffff8d088881 DR2: ffffffff8d088883
[  136.440654] DR3: ffffffff8d088885 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  136.441097] Call Trace:
[  136.441345]  <TASK>
[  136.441783]  drm_test_rect_calc_hscale+0x108/0x270
[  136.442071]  ? __pfx_drm_test_rect_calc_hscale+0x10/0x10
[  136.442631]  ? __schedule+0x10cc/0x2b30
[  136.443033]  ? __pfx_read_tsc+0x10/0x10
[  136.443363]  ? ktime_get_ts64+0x86/0x230
[  136.443782]  kunit_try_run_case+0x1a5/0x480
[  136.444116]  ? __pfx_kunit_try_run_case+0x10/0x10
[  136.444343]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  136.444862]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  136.445157]  ? __kthread_parkme+0x82/0x180
[  136.445573]  ? preempt_count_sub+0x50/0x80
[  136.445785]  ? __pfx_kunit_try_run_case+0x10/0x10
[  136.445998]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  136.446608]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  136.447060]  kthread+0x337/0x6f0
[  136.447366]  ? trace_preempt_on+0x20/0xc0
[  136.447991]  ? __pfx_kthread+0x10/0x10
[  136.448267]  ? _raw_spin_unlock_irq+0x47/0x80
[  136.448685]  ? calculate_sigpending+0x7b/0xa0
[  136.448903]  ? __pfx_kthread+0x10/0x10
[  136.449085]  ret_from_fork+0x41/0x80
[  136.449259]  ? __pfx_kthread+0x10/0x10
[  136.449780]  ret_from_fork_asm+0x1a/0x30
[  136.450102]  </TASK>
[  136.450523] ---[ end trace 0000000000000000 ]---
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