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Date
July 17, 2025, 11:11 p.m.

Environment
qemu-x86_64 

------------[ cut here ]------------
[  148.084067] WARNING: CPU: 0 PID: 2753 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_hscale+0x125/0x190
[  148.084500] Modules linked in:
[  148.084738] CPU: 0 UID: 0 PID: 2753 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[  148.085441] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  148.085788] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  148.086286] RIP: 0010:drm_rect_calc_hscale+0x125/0x190
[  148.086512] Code: 7f 43 41 39 ce 7c 3e 48 83 c4 08 89 c8 5b 41 5c 41 5d 41 5e 5d e9 db e5 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
[  148.087422] RSP: 0000:ffff88810b8cfc78 EFLAGS: 00010286
[  148.087774] RAX: 0000000000010000 RBX: 00000000ffff0000 RCX: 00000000ffff0000
[  148.088248] RDX: 0000000000000003 RSI: 0000000000000000 RDI: ffffffff9c433c38
[  148.088569] RBP: ffff88810b8cfca0 R08: 0000000000000000 R09: ffffed10206808a0
[  148.089057] R10: ffff888103404507 R11: 0000000000000000 R12: ffffffff9c433c20
[  148.089354] R13: 0000000000000000 R14: 000000007fffffff R15: ffff88810b8cfd38
[  148.089664] FS:  0000000000000000(0000) GS:ffff8881bcc72000(0000) knlGS:0000000000000000
[  148.090132] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  148.090410] CR2: 00007ffff7ffe000 CR3: 000000014a4bc000 CR4: 00000000000006f0
[  148.090732] DR0: ffffffff9e452440 DR1: ffffffff9e452441 DR2: ffffffff9e452443
[  148.091029] DR3: ffffffff9e452445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  148.091406] Call Trace:
[  148.091574]  <TASK>
[  148.091686]  drm_test_rect_calc_hscale+0x108/0x270
[  148.092223]  ? __pfx_drm_test_rect_calc_hscale+0x10/0x10
[  148.092516]  ? __schedule+0x10cc/0x2b60
[  148.092670]  ? __pfx_read_tsc+0x10/0x10
[  148.092889]  ? ktime_get_ts64+0x86/0x230
[  148.093181]  kunit_try_run_case+0x1a5/0x480
[  148.093418]  ? __pfx_kunit_try_run_case+0x10/0x10
[  148.093779]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  148.094103]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  148.094382]  ? __kthread_parkme+0x82/0x180
[  148.094619]  ? preempt_count_sub+0x50/0x80
[  148.094782]  ? __pfx_kunit_try_run_case+0x10/0x10
[  148.095178]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  148.095474]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  148.095708]  kthread+0x337/0x6f0
[  148.096182]  ? trace_preempt_on+0x20/0xc0
[  148.096415]  ? __pfx_kthread+0x10/0x10
[  148.096674]  ? _raw_spin_unlock_irq+0x47/0x80
[  148.096946]  ? calculate_sigpending+0x7b/0xa0
[  148.097272]  ? __pfx_kthread+0x10/0x10
[  148.097480]  ret_from_fork+0x116/0x1d0
[  148.097648]  ? __pfx_kthread+0x10/0x10
[  148.097841]  ret_from_fork_asm+0x1a/0x30
[  148.098195]  </TASK>
[  148.098339] ---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
[  148.060732] WARNING: CPU: 0 PID: 2751 at drivers/gpu/drm/drm_rect.c:137 drm_rect_calc_hscale+0x125/0x190
[  148.063032] Modules linked in:
[  148.063257] CPU: 0 UID: 0 PID: 2751 Comm: kunit_try_catch Tainted: G    B D W        N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[  148.063651] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  148.063907] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  148.064266] RIP: 0010:drm_rect_calc_hscale+0x125/0x190
[  148.065078] Code: 7f 43 41 39 ce 7c 3e 48 83 c4 08 89 c8 5b 41 5c 41 5d 41 5e 5d e9 db e5 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
[  148.066061] RSP: 0000:ffff888107c97c78 EFLAGS: 00010286
[  148.066326] RAX: 00000000ffff0000 RBX: 00000000ffff0000 RCX: 0000000000010000
[  148.066618] RDX: 0000000000000003 RSI: 0000000000000000 RDI: ffffffff9c433c00
[  148.067068] RBP: ffff888107c97ca0 R08: 0000000000000000 R09: ffffed1020680860
[  148.067388] R10: ffff888103404307 R11: 0000000000000000 R12: ffffffff9c433be8
[  148.067721] R13: 0000000000000000 R14: 000000007fffffff R15: ffff888107c97d38
[  148.068376] FS:  0000000000000000(0000) GS:ffff8881bcc72000(0000) knlGS:0000000000000000
[  148.068717] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  148.069024] CR2: 00007ffff7ffe000 CR3: 000000014a4bc000 CR4: 00000000000006f0
[  148.069376] DR0: ffffffff9e452440 DR1: ffffffff9e452441 DR2: ffffffff9e452443
[  148.069947] DR3: ffffffff9e452445 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  148.070565] Call Trace:
[  148.070756]  <TASK>
[  148.070999]  drm_test_rect_calc_hscale+0x108/0x270
[  148.071408]  ? __pfx_drm_test_rect_calc_hscale+0x10/0x10
[  148.072040]  ? __schedule+0x10cc/0x2b60
[  148.072255]  ? __pfx_read_tsc+0x10/0x10
[  148.072447]  ? ktime_get_ts64+0x86/0x230
[  148.073048]  kunit_try_run_case+0x1a5/0x480
[  148.073260]  ? __pfx_kunit_try_run_case+0x10/0x10
[  148.073710]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  148.074217]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  148.074595]  ? __kthread_parkme+0x82/0x180
[  148.075083]  ? preempt_count_sub+0x50/0x80
[  148.075369]  ? __pfx_kunit_try_run_case+0x10/0x10
[  148.075786]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  148.076275]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  148.076731]  kthread+0x337/0x6f0
[  148.077154]  ? trace_preempt_on+0x20/0xc0
[  148.077513]  ? __pfx_kthread+0x10/0x10
[  148.078311]  ? _raw_spin_unlock_irq+0x47/0x80
[  148.078604]  ? calculate_sigpending+0x7b/0xa0
[  148.078905]  ? __pfx_kthread+0x10/0x10
[  148.079109]  ret_from_fork+0x116/0x1d0
[  148.079322]  ? __pfx_kthread+0x10/0x10
[  148.079500]  ret_from_fork_asm+0x1a/0x30
[  148.079898]  </TASK>
[  148.080050] ---[ end trace 0000000000000000 ]---
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