Hay
Date
May 26, 2025, 9:10 a.m.

Environment
qemu-x86_64

------------[ cut here ]------------
[  148.204600] WARNING: CPU: 1 PID: 2820 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  148.205279] Modules linked in:
[  148.205451] CPU: 1 UID: 0 PID: 2820 Comm: kunit_try_catch Tainted: G    B D W        N  6.15.0-rc7-next-20250526 #1 PREEMPT(voluntary) 
[  148.205952] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  148.206346] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  148.206680] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  148.206910] Code: 7f 43 41 39 ce 7c 3e 48 83 c4 08 89 c8 5b 41 5c 41 5d 41 5e 5d e9 c0 9e 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
[  148.207649] RSP: 0000:ffff888106257c78 EFLAGS: 00010286
[  148.208084] RAX: 0000000000010000 RBX: 00000000ffff0000 RCX: 00000000ffff0000
[  148.208349] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffffa783c954
[  148.208653] RBP: ffff888106257ca0 R08: 0000000000000000 R09: ffffed1020ada5a0
[  148.208964] R10: ffff8881056d2d07 R11: 0000000000000000 R12: ffffffffa783c940
[  148.209329] R13: 0000000000000000 R14: 000000007fffffff R15: ffff888106257d38
[  148.209620] FS:  0000000000000000(0000) GS:ffff8881ab15b000(0000) knlGS:0000000000000000
[  148.209958] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  148.210285] CR2: 00007ffff7ffe000 CR3: 000000016b8bc000 CR4: 00000000000006f0
[  148.210555] DR0: ffffffffa9869404 DR1: ffffffffa9869409 DR2: ffffffffa986940a
[  148.210851] DR3: ffffffffa986940b DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  148.211117] Call Trace:
[  148.211379]  <TASK>
[  148.211521]  drm_test_rect_calc_vscale+0x108/0x270
[  148.211741]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  148.211963]  ? __schedule+0x10cc/0x2b60
[  148.212356]  ? __pfx_read_tsc+0x10/0x10
[  148.212576]  ? ktime_get_ts64+0x86/0x230
[  148.212790]  kunit_try_run_case+0x1a5/0x480
[  148.212974]  ? __pfx_kunit_try_run_case+0x10/0x10
[  148.213206]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  148.213478]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  148.213737]  ? __kthread_parkme+0x82/0x180
[  148.213947]  ? preempt_count_sub+0x50/0x80
[  148.214201]  ? __pfx_kunit_try_run_case+0x10/0x10
[  148.214411]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  148.214675]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  148.214917]  kthread+0x337/0x6f0
[  148.215178]  ? trace_preempt_on+0x20/0xc0
[  148.215390]  ? __pfx_kthread+0x10/0x10
[  148.215587]  ? _raw_spin_unlock_irq+0x47/0x80
[  148.215800]  ? calculate_sigpending+0x7b/0xa0
[  148.216025]  ? __pfx_kthread+0x10/0x10
[  148.216164]  ret_from_fork+0x116/0x1d0
[  148.216301]  ? __pfx_kthread+0x10/0x10
[  148.216847]  ret_from_fork_asm+0x1a/0x30
[  148.217481]  </TASK>
[  148.217612] ---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
[  148.187281] WARNING: CPU: 0 PID: 2818 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_vscale+0x130/0x190
[  148.187696] Modules linked in:
[  148.187910] CPU: 0 UID: 0 PID: 2818 Comm: kunit_try_catch Tainted: G    B D W        N  6.15.0-rc7-next-20250526 #1 PREEMPT(voluntary) 
[  148.188472] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  148.188768] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  148.189115] RIP: 0010:drm_rect_calc_vscale+0x130/0x190
[  148.189624] Code: 7f 43 41 39 ce 7c 3e 48 83 c4 08 89 c8 5b 41 5c 41 5d 41 5e 5d e9 c0 9e 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
[  148.190580] RSP: 0000:ffff888106247c78 EFLAGS: 00010286
[  148.190912] RAX: 00000000ffff0000 RBX: 00000000ffff0000 RCX: 0000000000010000
[  148.191282] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffffffffa783c91c
[  148.191533] RBP: ffff888106247ca0 R08: 0000000000000000 R09: ffffed102078f140
[  148.191883] R10: ffff888103c78a07 R11: 0000000000000000 R12: ffffffffa783c908
[  148.192307] R13: 0000000000000000 R14: 000000007fffffff R15: ffff888106247d38
[  148.192580] FS:  0000000000000000(0000) GS:ffff8881ab05b000(0000) knlGS:0000000000000000
[  148.192913] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  148.193295] CR2: 00007ffff7ffe000 CR3: 000000016b8bc000 CR4: 00000000000006f0
[  148.193600] DR0: ffffffffa9869400 DR1: ffffffffa9869401 DR2: ffffffffa9869403
[  148.193945] DR3: ffffffffa9869405 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  148.194237] Call Trace:
[  148.194737]  <TASK>
[  148.194842]  drm_test_rect_calc_vscale+0x108/0x270
[  148.195235]  ? __pfx_drm_test_rect_calc_vscale+0x10/0x10
[  148.195479]  ? __schedule+0x207f/0x2b60
[  148.195671]  ? __pfx_read_tsc+0x10/0x10
[  148.195852]  ? ktime_get_ts64+0x86/0x230
[  148.196024]  kunit_try_run_case+0x1a5/0x480
[  148.196309]  ? __pfx_kunit_try_run_case+0x10/0x10
[  148.196525]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  148.196748]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  148.196936]  ? __kthread_parkme+0x82/0x180
[  148.197229]  ? preempt_count_sub+0x50/0x80
[  148.197440]  ? __pfx_kunit_try_run_case+0x10/0x10
[  148.197660]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  148.197908]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  148.198343]  kthread+0x337/0x6f0
[  148.198515]  ? trace_preempt_on+0x20/0xc0
[  148.198664]  ? __pfx_kthread+0x10/0x10
[  148.198863]  ? _raw_spin_unlock_irq+0x47/0x80
[  148.199209]  ? calculate_sigpending+0x7b/0xa0
[  148.199453]  ? __pfx_kthread+0x10/0x10
[  148.199616]  ret_from_fork+0x116/0x1d0
[  148.199849]  ? __pfx_kthread+0x10/0x10
[  148.200024]  ret_from_fork_asm+0x1a/0x30
[  148.200225]  </TASK>
[  148.200383] ---[ end trace 0000000000000000 ]---