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Date
July 22, 2025, 2:40 p.m.

Environment
qemu-arm64
qemu-x86_64 

------------[ cut here ]------------
[   27.102992] WARNING: CPU: 1 PID: 417 at lib/math/int_log.c:63 intlog2+0xb8/0x118
[   27.106031] Modules linked in:
[   27.106491] CPU: 1 UID: 0 PID: 417 Comm: kunit_try_catch Tainted: G      D          N  6.15.8-rc1 #1 PREEMPT 
[   27.107763] Tainted: [D]=DIE, [N]=TEST
[   27.108194] Hardware name: linux,dummy-virt (DT)
[   27.108771] pstate: 82402009 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
[   27.109604] pc : intlog2+0xb8/0x118
[   27.109990] lr : intlog2_test+0x88/0x180
[   27.110190] sp : ffff800080fd7cd0
[   27.110350] x29: ffff800080fd7cf0 x28: dfff800000000000 x27: 1ffe000018f35945
[   27.110740] x26: fff00000c74fbaa0 x25: ffff8000800878a8 x24: 0000000000000000
[   27.111115] x23: dfff800000000000 x22: fff00000c79ad418 x21: ffff97da296bcd10
[   27.111476] x20: ffff97da27ba1ec0 x19: ffff800080087b08 x18: ffff800080097930
[   27.112229] x17: ffff80008009792c x16: 0000000000000000 x15: 0000000000000001
[   27.113120] x14: 1ffff2fb4557fe78 x13: 0000000000000000 x12: 0000000000000000
[   27.113951] x11: ffff72fb4557fe79 x10: 0000000000000017 x9 : 0000000000000007
[   27.114710] x8 : 0000000000000000 x7 : ffff80008009793c x6 : 0000000000000014
[   27.115489] x5 : 00000000d21b8dee x4 : 0000000000000000 x3 : ffff97da25178960
[   27.116284] x2 : 0000000000000000 x1 : 00000000003810c7 x0 : 0000000000000000
[   27.117313] Call trace:
[   27.117669]  intlog2+0xb8/0x118 (P)
[   27.118071]  intlog2_test+0x88/0x180
[   27.118452]  kunit_try_run_case+0x118/0x31c
[   27.118914]  kunit_generic_run_threadfn_adapter+0x84/0x104
[   27.119448]  kthread+0x3f4/0x518
[   27.119812]  ret_from_fork+0x10/0x20
[   27.120276] ---[ end trace 0000000000000000 ]---
Metadata Full log Test run details 

------------[ cut here ]------------
[   25.894926] WARNING: CPU: 1 PID: 419 at lib/math/int_log.c:63 intlog2+0xb8/0x118
[   25.896153] Modules linked in:
[   25.896728] CPU: 1 UID: 0 PID: 419 Comm: kunit_try_catch Tainted: G      D          N  6.15.8-rc1 #1 PREEMPT 
[   25.897098] Tainted: [D]=DIE, [N]=TEST
[   25.897286] Hardware name: linux,dummy-virt (DT)
[   25.898063] pstate: 81400009 (Nzcv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
[   25.898932] pc : intlog2+0xb8/0x118
[   25.899511] lr : intlog2_test+0x88/0x180
[   25.900102] sp : ffff8000820f7cd0
[   25.900544] x29: ffff8000820f7cf0 x28: dfff800000000000 x27: 1ffe000018fce005
[   25.901350] x26: fff00000c7e89120 x25: ffff8000800878a8 x24: 0000000000000000
[   25.901967] x23: dfff800000000000 x22: fff00000c7e70a18 x21: ffffa23b100acd10
[   25.902538] x20: ffffa23b0e592ec0 x19: ffff800080087b08 x18: ffff800080097930
[   25.903346] x17: ffff80008009792c x16: 0000000000000000 x15: 0000000000000001
[   25.904128] x14: 1ffff447622be078 x13: 0000000000000000 x12: 0000000000000000
[   25.904904] x11: ffff7447622be079 x10: 0000000000000017 x9 : 0000000000000007
[   25.905410] x8 : 0000000000000000 x7 : ffff80008009793c x6 : 0000000000000014
[   25.905775] x5 : 000000001febe6a8 x4 : 0000000000000001 x3 : ffffa23b0bb73028
[   25.906129] x2 : 0000000000000000 x1 : 00000000003a7599 x0 : 0000000000000000
[   25.907022] Call trace:
[   25.907347]  intlog2+0xb8/0x118 (P)
[   25.907754]  intlog2_test+0x88/0x180
[   25.908152]  kunit_try_run_case+0x118/0x318
[   25.908598]  kunit_generic_run_threadfn_adapter+0x84/0x104
[   25.909143]  kthread+0x3f4/0x518
[   25.909526]  ret_from_fork+0x10/0x20
[   25.909976] ---[ end trace 0000000000000000 ]---
Metadata Full log Test run details 

------------[ cut here ]------------
[   31.535580] WARNING: CPU: 0 PID: 418 at lib/math/int_log.c:63 intlog2+0xd4/0xec
[   31.537097] Modules linked in:
[   31.537339] CPU: 0 UID: 0 PID: 418 Comm: kunit_try_catch Tainted: G      D          N  6.15.8-rc1 #1 PREEMPT 
[   31.538956] Tainted: [D]=DIE, [N]=TEST
[   31.539618] Hardware name: linux,dummy-virt (DT)
[   31.540170] pstate: 11400009 (nzcV daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
[   31.541041] pc : intlog2+0xd4/0xec
[   31.541727] lr : intlog2_test+0xdc/0x1e0
[   31.542716] sp : ffff800081ff7bf0
[   31.543158] x29: ffff800081ff7bf0 x28: 0000000000000000 x27: 0000000000000000
[   31.543575] x26: 0000000000000000 x25: fff00000c7d89280 x24: fff00000c7d89280
[   31.543961] x23: 0000000000000000 x22: ffff9fe65bb3afd8 x21: ffff9fe65a4fc220
[   31.544344] x20: 1ffff000103fef86 x19: ffff800080087a10 x18: 00000000000010d8
[   31.545072] x17: 00000000000010e0 x16: 00000000000010e8 x15: 00000000000010f0
[   31.545921] x14: 00000000000010f8 x13: ffff73fccbf08321 x12: 1ffff3fccbf08320
[   31.546495] x11: 1ffff3fccbf08320 x10: ffff73fccbf08320 x9 : dfff800000000000
[   31.547022] x8 : 0000000000000001 x7 : ffff73fccbf08321 x6 : ffff9fe65f841903
[   31.547540] x5 : 0000000041b58ab3 x4 : ffff7000103fef86 x3 : 1ffff3fccb49f844
[   31.548041] x2 : 1ffff3fccb49f844 x1 : 0000000000000003 x0 : 0000000000000000
[   31.548573] Call trace:
[   31.548782]  intlog2+0xd4/0xec (P)
[   31.549069]  kunit_try_run_case+0x144/0x3bc
[   31.549312]  kunit_generic_run_threadfn_adapter+0x80/0xec
[   31.549743]  kthread+0x3f0/0x744
[   31.550044]  ret_from_fork+0x10/0x20
[   31.550497] ---[ end trace 0000000000000000 ]---
Metadata Full log Test run details 

------------[ cut here ]------------
[   30.237840] WARNING: CPU: 1 PID: 417 at lib/math/int_log.c:63 intlog2+0xd0/0xe8
[   30.241005] Modules linked in:
[   30.241278] CPU: 1 UID: 0 PID: 417 Comm: kunit_try_catch Tainted: G      D          N  6.15.8-rc1 #1 PREEMPT 
[   30.242336] Tainted: [D]=DIE, [N]=TEST
[   30.242724] Hardware name: linux,dummy-virt (DT)
[   30.243222] pstate: 12402009 (nzcV daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
[   30.243887] pc : intlog2+0xd0/0xe8
[   30.244234] lr : intlog2_test+0xdc/0x1f0
[   30.244635] sp : ffff800080f37c10
[   30.245005] x29: ffff800080f37c90 x28: 0000000000000000 x27: 0000000000000000
[   30.245556] x26: 1ffe000018f482e1 x25: fff00000c7bc8000 x24: 0000000000000004
[   30.245892] x23: fff00000c7bc8000 x22: 0000000000000000 x21: 1ffff000101e6f82
[   30.246214] x20: ffff980cca07c100 x19: ffff8000800879b0 x18: 0000000000009000
[   30.246977] x17: fff00000c0361288 x16: fff00000c089573c x15: fff00000ff80eb08
[   30.247927] x14: 1ffe00001b52371d x13: 1ffe000018f79002 x12: ffff730199a9ef31
[   30.248871] x11: 1ffff30199a9ef30 x10: ffff730199a9ef30 x9 : dfff800000000000
[   30.249733] x8 : ffff980ccd4f7983 x7 : 0000000000000001 x6 : 00000000f1f1f1f1
[   30.250570] x5 : ffff7000101e6f82 x4 : 1ffff00010010f3e x3 : 1ffff3019940f820
[   30.251371] x2 : 1ffff3019940f820 x1 : 0000000000000003 x0 : 0000000000000000
[   30.252128] Call trace:
[   30.252433]  intlog2+0xd0/0xe8 (P)
[   30.252838]  kunit_try_run_case+0x144/0x3bc
[   30.253181]  kunit_generic_run_threadfn_adapter+0x80/0xec
[   30.253426]  kthread+0x37c/0x67c
[   30.253596]  ret_from_fork+0x10/0x20
[   30.253851] ---[ end trace 0000000000000000 ]---
Metadata Full log Test run details 

------------[ cut here ]------------
[   96.061976] WARNING: CPU: 0 PID: 640 at lib/math/int_log.c:63 intlog2+0xd8/0xf8
[   96.065272] Modules linked in:
[   96.065693] CPU: 0 UID: 0 PID: 640 Comm: kunit_try_catch Tainted: G    B D          N  6.15.8-rc1 #1 PREEMPT 
[   96.066481] Tainted: [B]=BAD_PAGE, [D]=DIE, [N]=TEST
[   96.066893] Hardware name: linux,dummy-virt (DT)
[   96.067443] pstate: 12402009 (nzcV daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
[   96.068150] pc : intlog2+0xd8/0xf8
[   96.068556] lr : intlog2_test+0xe4/0x200
[   96.068955] sp : ffff8000821c7c10
[   96.069114] x29: ffff8000821c7c90 x28: 0000000000000000 x27: 0000000000000000
[   96.069478] x26: 1ffe0000187d06a1 x25: 0000000000000000 x24: ffff8000821c7ce0
[   96.069823] x23: ffff8000821c7d00 x22: 0000000000000000 x21: 1ffff00010438f82
[   96.070168] x20: ffff9b0a4be35240 x19: ffff800080087990 x18: 000000006eebabad
[   96.071004] x17: 000000000cc31ddf x16: fff00000c096dc3c x15: fff00000ff616b08
[   96.071964] x14: 00000000f1f1f1f1 x13: 1ffe00001b493c1d x12: ffff736149f79b71
[   96.072849] x11: 1ffff36149f79b70 x10: ffff736149f79b70 x9 : ffff9b0a494157e4
[   96.073673] x8 : ffff9b0a4fbcdb83 x7 : 0000000000000001 x6 : 00000000f1f1f1f1
[   96.074436] x5 : ffff700010438f82 x4 : 1ffff00010010f3a x3 : 1ffff361497c6a48
[   96.075299] x2 : 1ffff361497c6a48 x1 : 0000000000000003 x0 : 0000000000000000
[   96.076117] Call trace:
[   96.076439]  intlog2+0xd8/0xf8 (P)
[   96.076834]  kunit_try_run_case+0x170/0x3f0
[   96.077407]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   96.077974]  kthread+0x328/0x630
[   96.078366]  ret_from_fork+0x10/0x20
[   96.078855] ---[ end trace 0000000000000000 ]---
Metadata Full log Test run details 

------------[ cut here ]------------
[  107.161754] WARNING: CPU: 1 PID: 658 at lib/math/int_log.c:63 intlog2+0xdf/0x110
[  107.162163] Modules linked in:
[  107.162484] CPU: 1 UID: 0 PID: 658 Comm: kunit_try_catch Tainted: G    B D          N  6.15.8-rc1 #1 PREEMPT(voluntary) 
[  107.163158] Tainted: [B]=BAD_PAGE, [D]=DIE, [N]=TEST
[  107.163506] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  107.164074] RIP: 0010:intlog2+0xdf/0x110
[  107.164316] Code: 49 b0 c1 e0 18 48 83 c4 08 89 d1 c1 e2 08 29 cb 01 d0 0f b7 db 41 0f af dc c1 eb 0f 01 d8 5b 41 5c 41 5d 5d e9 52 65 81 02 90 <0f> 0b 90 31 c0 e9 47 65 81 02 89 45 e4 e8 cf 82 56 ff 8b 45 e4 eb
[  107.165258] RSP: 0000:ffff888102f3fcb0 EFLAGS: 00010246
[  107.165639] RAX: 0000000000000000 RBX: ffff88810031fae8 RCX: 1ffff110205e7fb4
[  107.166160] RDX: 1ffffffff609277c RSI: 1ffff110205e7fb3 RDI: 0000000000000000
[  107.166836] RBP: ffff888102f3fd60 R08: 0000000000000000 R09: ffffed10209df400
[  107.167120] R10: ffff888104efa007 R11: 0000000000000000 R12: 1ffff110205e7f97
[  107.167430] R13: ffffffffb0493be0 R14: 0000000000000000 R15: ffff888102f3fd38
[  107.167765] FS:  0000000000000000(0000) GS:ffff8881a8b90000(0000) knlGS:0000000000000000
[  107.168216] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  107.168439] CR2: ffff88815a908000 CR3: 000000002a6ba000 CR4: 00000000000006f0
[  107.168766] DR0: ffffffffb2633900 DR1: ffffffffb2633901 DR2: ffffffffb2633903
[  107.169274] DR3: ffffffffb2633905 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  107.169532] Call Trace:
[  107.169865]  <TASK>
[  107.170014]  ? intlog2_test+0xf2/0x220
[  107.170193]  ? __pfx_intlog2_test+0x10/0x10
[  107.170478]  ? __schedule+0x10c6/0x2b60
[  107.170644]  ? __pfx_read_tsc+0x10/0x10
[  107.170917]  ? ktime_get_ts64+0x86/0x230
[  107.171097]  kunit_try_run_case+0x1a5/0x480
[  107.171286]  ? __pfx_kunit_try_run_case+0x10/0x10
[  107.171611]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  107.171811]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  107.172123]  ? __kthread_parkme+0x82/0x180
[  107.172341]  ? preempt_count_sub+0x50/0x80
[  107.172525]  ? __pfx_kunit_try_run_case+0x10/0x10
[  107.172745]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  107.173041]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  107.173307]  kthread+0x337/0x6f0
[  107.173503]  ? trace_preempt_on+0x20/0xc0
[  107.173708]  ? __pfx_kthread+0x10/0x10
[  107.174285]  ? _raw_spin_unlock_irq+0x47/0x80
[  107.174883]  ? calculate_sigpending+0x7b/0xa0
[  107.175115]  ? __pfx_kthread+0x10/0x10
[  107.175369]  ret_from_fork+0x41/0x80
[  107.175617]  ? __pfx_kthread+0x10/0x10
[  107.175892]  ret_from_fork_asm+0x1a/0x30
[  107.176099]  </TASK>
[  107.176237] ---[ end trace 0000000000000000 ]---
Metadata Full log Test run details