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Date
June 17, 2025, 3:40 p.m.

Environment
qemu-x86_64 

------------[ cut here ]------------
[  208.171601] WARNING: CPU: 1 PID: 2742 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  208.172805] Modules linked in:
[  208.173681] CPU: 1 UID: 0 PID: 2742 Comm: kunit_try_catch Tainted: G    B D W        N  6.15.3-rc1 #1 PREEMPT(voluntary) 
[  208.174865] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  208.175777] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  208.176777] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  208.177557] Code: 7f 43 41 39 ce 7c 3e 48 83 c4 08 89 c8 5b 41 5c 41 5d 41 5e 5d e9 d0 ac 1a 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
[  208.179095] RSP: 0000:ffff888102e6fc78 EFLAGS: 00010286
[  208.179519] RAX: 0000000000010000 RBX: 00000000ffff0000 RCX: 00000000ffff0000
[  208.181114] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffff9bc23bf4
[  208.181802] RBP: ffff888102e6fca0 R08: 0000000000000000 R09: ffffed10205e68a0
[  208.182607] R10: ffff888102f34507 R11: 0000000000000000 R12: ffffffff9bc23be0
[  208.183386] R13: 0000000000000000 R14: 000000007fffffff R15: ffff888102e6fd38
[  208.184887] FS:  0000000000000000(0000) GS:ffff8881bd593000(0000) knlGS:0000000000000000
[  208.185768] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  208.186378] CR2: 00007ffff7ffe000 CR3: 000000006b8ba000 CR4: 00000000000006f0
[  208.187291] DR0: ffffffff9dc30900 DR1: ffffffff9dc30901 DR2: ffffffff9dc30903
[  208.187933] DR3: ffffffff9dc30905 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  208.188519] Call Trace:
[  208.188833]  <TASK>
[  208.189131]  drm_test_rect_calc_vscale+0x108/0x270
[  208.189832]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  208.190621]  ? __schedule+0x10cc/0x2b60
[  208.191258]  ? __pfx_read_tsc+0x10/0x10
[  208.192049]  ? ktime_get_ts64+0x86/0x230
[  208.192442]  kunit_try_run_case+0x1a5/0x480
[  208.192885]  ? __pfx_kunit_try_run_case+0x10/0x10
[  208.193299]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  208.194222]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  208.194793]  ? __kthread_parkme+0x82/0x180
[  208.195527]  ? preempt_count_sub+0x50/0x80
[  208.196159]  ? __pfx_kunit_try_run_case+0x10/0x10
[  208.196766]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  208.197544]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  208.198378]  kthread+0x337/0x6f0
[  208.198796]  ? trace_preempt_on+0x20/0xc0
[  208.199242]  ? __pfx_kthread+0x10/0x10
[  208.199897]  ? _raw_spin_unlock_irq+0x47/0x80
[  208.200596]  ? calculate_sigpending+0x7b/0xa0
[  208.201064]  ? __pfx_kthread+0x10/0x10
[  208.201534]  ret_from_fork+0x41/0x80
[  208.202412]  ? __pfx_kthread+0x10/0x10
[  208.202907]  ret_from_fork_asm+0x1a/0x30
[  208.203623]  </TASK>
[  208.203900] ---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
[  208.121526] WARNING: CPU: 1 PID: 2740 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  208.122842] Modules linked in:
[  208.123611] CPU: 1 UID: 0 PID: 2740 Comm: kunit_try_catch Tainted: G    B D W        N  6.15.3-rc1 #1 PREEMPT(voluntary) 
[  208.124509] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  208.124933] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  208.126347] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  208.126919] Code: 7f 43 41 39 ce 7c 3e 48 83 c4 08 89 c8 5b 41 5c 41 5d 41 5e 5d e9 d0 ac 1a 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
[  208.128840] RSP: 0000:ffff888102cc7c78 EFLAGS: 00010286
[  208.129423] RAX: 00000000ffff0000 RBX: 00000000ffff0000 RCX: 0000000000010000
[  208.129883] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffff9bc23bbc
[  208.130899] RBP: ffff888102cc7ca0 R08: 0000000000000000 R09: ffffed102058caa0
[  208.131667] R10: ffff888102c65507 R11: 0000000000000000 R12: ffffffff9bc23ba8
[  208.132206] R13: 0000000000000000 R14: 000000007fffffff R15: ffff888102cc7d38
[  208.133750] FS:  0000000000000000(0000) GS:ffff8881bd593000(0000) knlGS:0000000000000000
[  208.134406] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  208.134872] CR2: 00007ffff7ffe000 CR3: 000000006b8ba000 CR4: 00000000000006f0
[  208.135690] DR0: ffffffff9dc30900 DR1: ffffffff9dc30901 DR2: ffffffff9dc30903
[  208.136886] DR3: ffffffff9dc30905 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  208.137763] Call Trace:
[  208.138414]  <TASK>
[  208.138745]  drm_test_rect_calc_vscale+0x108/0x270
[  208.140500]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  208.142286]  ? __schedule+0x10cc/0x2b60
[  208.142733]  ? __pfx_read_tsc+0x10/0x10
[  208.143083]  ? ktime_get_ts64+0x86/0x230
[  208.143622]  kunit_try_run_case+0x1a5/0x480
[  208.144314]  ? __pfx_kunit_try_run_case+0x10/0x10
[  208.146347]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  208.148714]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  208.150071]  ? __kthread_parkme+0x82/0x180
[  208.151567]  ? preempt_count_sub+0x50/0x80
[  208.153230]  ? __pfx_kunit_try_run_case+0x10/0x10
[  208.154442]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  208.155520]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  208.156870]  kthread+0x337/0x6f0
[  208.157384]  ? trace_preempt_on+0x20/0xc0
[  208.157768]  ? __pfx_kthread+0x10/0x10
[  208.158137]  ? _raw_spin_unlock_irq+0x47/0x80
[  208.158552]  ? calculate_sigpending+0x7b/0xa0
[  208.158940]  ? __pfx_kthread+0x10/0x10
[  208.159312]  ret_from_fork+0x41/0x80
[  208.160814]  ? __pfx_kthread+0x10/0x10
[  208.161568]  ret_from_fork_asm+0x1a/0x30
[  208.162672]  </TASK>
[  208.162886] ---[ end trace 0000000000000000 ]---
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