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Date
July 12, 2025, 11:09 a.m.

Environment
qemu-arm64
qemu-x86_64 

------------[ cut here ]------------
[   26.005136] WARNING: CPU: 0 PID: 415 at lib/math/int_log.c:63 intlog2+0xb8/0x118
[   26.006852] Modules linked in:
[   26.007101] CPU: 0 UID: 0 PID: 415 Comm: kunit_try_catch Tainted: G      D          N  6.16.0-rc5 #1 PREEMPT 
[   26.007503] Tainted: [D]=DIE, [N]=TEST
[   26.008170] Hardware name: linux,dummy-virt (DT)
[   26.008581] pstate: 82402009 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
[   26.009146] pc : intlog2+0xb8/0x118
[   26.009404] lr : intlog2_test+0x88/0x180
[   26.009639] sp : ffff8000820b7cd0
[   26.009807] x29: ffff8000820b7cf0 x28: dfff800000000000 x27: 1ffe000018f54255
[   26.010267] x26: fff00000c57db5a0 x25: ffff8000800878a8 x24: 0000000000000000
[   26.010770] x23: dfff800000000000 x22: fff00000c7aa1c98 x21: ffffa873c855e810
[   26.011237] x20: ffffa873c69d6800 x19: ffff800080087b08 x18: 0000000000000000
[   26.011670] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000001
[   26.012084] x14: 1ffff50e79362280 x13: 0000000000000000 x12: 0000000000000000
[   26.012530] x11: ffff750e79362281 x10: 0000000000000017 x9 : 0000000000000007
[   26.013279] x8 : 0000000000000000 x7 : 00000000705018a5 x6 : 00000000049d9ceb
[   26.014097] x5 : 000000006f7dfb8c x4 : ffff8000820b7bf4 x3 : ffffa873c3f7d234
[   26.014932] x2 : 0000000000000000 x1 : 0000000000380d9d x0 : 0000000000000000
[   26.015727] Call trace:
[   26.016005]  intlog2+0xb8/0x118 (P)
[   26.016406]  intlog2_test+0x88/0x180
[   26.016796]  kunit_try_run_case+0x118/0x31c
[   26.017232]  kunit_generic_run_threadfn_adapter+0x84/0x104
[   26.017771]  kthread+0x3f4/0x51c
[   26.018297]  ret_from_fork+0x10/0x20
[   26.018730] ---[ end trace 0000000000000000 ]---
Metadata Full log Test run details 

------------[ cut here ]------------
[  100.544167] WARNING: CPU: 0 PID: 639 at lib/math/int_log.c:63 intlog2+0xd8/0xf8
[  100.545733] Modules linked in:
[  100.546201] CPU: 0 UID: 0 PID: 639 Comm: kunit_try_catch Tainted: G    B D          N  6.16.0-rc5 #1 PREEMPT 
[  100.547759] Tainted: [B]=BAD_PAGE, [D]=DIE, [N]=TEST
[  100.548135] Hardware name: linux,dummy-virt (DT)
[  100.548730] pstate: 12402009 (nzcV daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
[  100.549492] pc : intlog2+0xd8/0xf8
[  100.549759] lr : intlog2_test+0xe4/0x200
[  100.550084] sp : ffff800082327c10
[  100.550309] x29: ffff800082327c90 x28: 0000000000000000 x27: 0000000000000000
[  100.550803] x26: 1ffe000019618001 x25: 0000000000000000 x24: ffff800082327ce0
[  100.551798] x23: ffff800082327d00 x22: 0000000000000000 x21: 1ffff00010464f82
[  100.552498] x20: ffff9c38c8489d80 x19: ffff800080087990 x18: 00000000f25e43c8
[  100.553588] x17: 0000000058c2a34a x16: 0000000000000100 x15: 0000000053202242
[  100.554128] x14: 00000000883cf921 x13: 1ffe00001b48a589 x12: ffff738719863379
[  100.554662] x11: 1ffff38719863378 x10: ffff738719863378 x9 : ffff9c38c5a3755c
[  100.555451] x8 : ffff9c38cc319bc3 x7 : 0000000000000001 x6 : 00000000f1f1f1f1
[  100.556131] x5 : ffff700010464f82 x4 : 1ffff00010010f3a x3 : 1ffff387190913b0
[  100.556565] x2 : 1ffff387190913b0 x1 : 0000000000000003 x0 : 0000000000000000
[  100.557414] Call trace:
[  100.557762]  intlog2+0xd8/0xf8 (P)
[  100.558162]  kunit_try_run_case+0x170/0x3f0
[  100.558576]  kunit_generic_run_threadfn_adapter+0x88/0x100
[  100.559127]  kthread+0x328/0x630
[  100.559514]  ret_from_fork+0x10/0x20
[  100.560067] ---[ end trace 0000000000000000 ]---
Metadata Full log Test run details 

------------[ cut here ]------------
[   25.794785] WARNING: CPU: 0 PID: 415 at lib/math/int_log.c:63 intlog2+0xb8/0x118
[   25.796508] Modules linked in:
[   25.796755] CPU: 0 UID: 0 PID: 415 Comm: kunit_try_catch Tainted: G      D          N  6.16.0-rc5 #1 PREEMPT 
[   25.797556] Tainted: [D]=DIE, [N]=TEST
[   25.798239] Hardware name: linux,dummy-virt (DT)
[   25.798837] pstate: 82402009 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
[   25.799775] pc : intlog2+0xb8/0x118
[   25.800336] lr : intlog2_test+0x88/0x180
[   25.800822] sp : ffff800082047cd0
[   25.801290] x29: ffff800082047cf0 x28: dfff800000000000 x27: 1ffe000018f77255
[   25.802232] x26: fff00000c7c0a520 x25: ffff8000800878a8 x24: 0000000000000000
[   25.803070] x23: dfff800000000000 x22: fff00000c7bb9c98 x21: ffffa9e72b75e810
[   25.803875] x20: ffffa9e729be58a0 x19: ffff800080087b08 x18: ffff800080097920
[   25.804663] x17: ffff80008009791c x16: 0000000000000000 x15: 0000000000000001
[   25.805524] x14: 1ffff53ce59a2080 x13: 0000000000000000 x12: 0000000000000000
[   25.806331] x11: ffff753ce59a2081 x10: 0000000000000017 x9 : 0000000000000007
[   25.807133] x8 : 0000000000000000 x7 : ffff80008009792c x6 : 0000000000000014
[   25.807911] x5 : 00000000348eb33b x4 : 0000000000000000 x3 : ffffa9e727183964
[   25.808690] x2 : 0000000000000000 x1 : 00000000003d1713 x0 : 0000000000000000
[   25.809561] Call trace:
[   25.809902]  intlog2+0xb8/0x118 (P)
[   25.810345]  intlog2_test+0x88/0x180
[   25.810767]  kunit_try_run_case+0x118/0x31c
[   25.811237]  kunit_generic_run_threadfn_adapter+0x84/0x104
[   25.811798]  kthread+0x3f4/0x51c
[   25.812082]  ret_from_fork+0x10/0x20
[   25.812335] ---[ end trace 0000000000000000 ]---
Metadata Full log Test run details 

------------[ cut here ]------------
[   31.961983] WARNING: CPU: 0 PID: 415 at lib/math/int_log.c:63 intlog2+0xd4/0xec
[   31.964886] Modules linked in:
[   31.966465] CPU: 0 UID: 0 PID: 415 Comm: kunit_try_catch Tainted: G      D          N  6.16.0-rc5 #1 PREEMPT 
[   31.967569] Tainted: [D]=DIE, [N]=TEST
[   31.968097] Hardware name: linux,dummy-virt (DT)
[   31.968581] pstate: 12402009 (nzcV daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
[   31.969201] pc : intlog2+0xd4/0xec
[   31.969898] lr : intlog2_test+0xdc/0x1e0
[   31.970260] sp : ffff8000820a7bf0
[   31.970434] x29: ffff8000820a7bf0 x28: 0000000000000000 x27: 0000000000000000
[   31.970825] x26: 0000000000000000 x25: fff00000c7a52500 x24: fff00000c7a52500
[   31.971518] x23: 0000000000000000 x22: ffff96d5edfe8858 x21: ffff96d5ec93fc60
[   31.972475] x20: 1ffff00010414f86 x19: ffff800080087a00 x18: 00000000000010d8
[   31.973638] x17: 00000000000010e0 x16: 00000000000010e8 x15: 00000000000010f0
[   31.974034] x14: 00000000000010f8 x13: ffff72dabe3bd129 x12: 1ffff2dabe3bd128
[   31.975502] x11: 1ffff2dabe3bd128 x10: ffff72dabe3bd128 x9 : dfff800000000000
[   31.976659] x8 : 0000000000000001 x7 : ffff72dabe3bd129 x6 : ffff96d5f1de8943
[   31.977035] x5 : 0000000041b58ab3 x4 : ffff700010414f86 x3 : 1ffff2dabd927f8c
[   31.977420] x2 : 1ffff2dabd927f8c x1 : 0000000000000003 x0 : 0000000000000000
[   31.977785] Call trace:
[   31.977936]  intlog2+0xd4/0xec (P)
[   31.979199]  kunit_try_run_case+0x144/0x3bc
[   31.980765]  kunit_generic_run_threadfn_adapter+0x80/0xec
[   31.981122]  kthread+0x3f0/0x744
[   31.981393]  ret_from_fork+0x10/0x20
[   31.981764] ---[ end trace 0000000000000000 ]---
Metadata Full log Test run details 

------------[ cut here ]------------
[   28.969655] WARNING: CPU: 0 PID: 415 at lib/math/int_log.c:63 intlog2+0xd0/0xe8
[   28.972019] Modules linked in:
[   28.972253] CPU: 0 UID: 0 PID: 415 Comm: kunit_try_catch Tainted: G      D          N  6.16.0-rc5 #1 PREEMPT 
[   28.973153] Tainted: [D]=DIE, [N]=TEST
[   28.973520] Hardware name: linux,dummy-virt (DT)
[   28.974046] pstate: 12402009 (nzcV daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
[   28.974323] pc : intlog2+0xd0/0xe8
[   28.974498] lr : intlog2_test+0xdc/0x1f0
[   28.974747] sp : ffff800082027c10
[   28.974946] x29: ffff800082027c90 x28: 0000000000000000 x27: 0000000000000000
[   28.975848] x26: 1ffe000018f39c41 x25: fff00000c79e4a00 x24: 0000000000000004
[   28.976377] x23: fff00000c79e4a00 x22: 0000000000000000 x21: 1ffff00010404f82
[   28.976909] x20: ffff909fd22cfe00 x19: ffff8000800879a0 x18: 1ffff00010012ece
[   28.977606] x17: fff00000c0369288 x16: fff00000c089763c x15: 0000000000007eb0
[   28.978215] x14: 1ffe00001b521ed5 x13: 1ffe000018f3c942 x12: ffff7213fab03d39
[   28.978733] x11: 1ffff213fab03d38 x10: ffff7213fab03d38 x9 : dfff800000000000
[   28.979233] x8 : ffff909fd581e9c3 x7 : 0000000000000001 x6 : 00000000f1f1f1f1
[   28.979732] x5 : ffff700010404f82 x4 : 1ffff00010010f3c x3 : 1ffff213fa459fc0
[   28.980161] x2 : 1ffff213fa459fc0 x1 : 0000000000000003 x0 : 0000000000000000
[   28.980707] Call trace:
[   28.980973]  intlog2+0xd0/0xe8 (P)
[   28.981393]  kunit_try_run_case+0x144/0x3bc
[   28.981824]  kunit_generic_run_threadfn_adapter+0x80/0xec
[   28.982125]  kthread+0x37c/0x67c
[   28.982492]  ret_from_fork+0x10/0x20
[   28.982906] ---[ end trace 0000000000000000 ]---
Metadata Full log Test run details 

------------[ cut here ]------------
[  110.808032] WARNING: CPU: 0 PID: 656 at lib/math/int_log.c:63 intlog2+0xdf/0x110
[  110.808378] Modules linked in:
[  110.808634] CPU: 0 UID: 0 PID: 656 Comm: kunit_try_catch Tainted: G    B D          N  6.16.0-rc5 #1 PREEMPT(voluntary) 
[  110.809272] Tainted: [B]=BAD_PAGE, [D]=DIE, [N]=TEST
[  110.809507] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  110.810123] RIP: 0010:intlog2+0xdf/0x110
[  110.810368] Code: 89 87 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 c3 cc cc cc cc 90 <0f> 0b 90 31 c0 e9 57 a7 86 02 89 45 e4 e8 ef d6 55 ff 8b 45 e4 eb
[  110.811378] RSP: 0000:ffff888104397cb0 EFLAGS: 00010246
[  110.811900] RAX: 0000000000000000 RBX: ffff88810039fae8 RCX: 1ffff11020872fb4
[  110.812209] RDX: 1ffffffff0f12e08 RSI: 1ffff11020872fb3 RDI: 0000000000000000
[  110.812497] RBP: ffff888104397d60 R08: 0000000000000000 R09: ffffed10204611e0
[  110.813094] R10: ffff888102308f07 R11: 0000000000000000 R12: 1ffff11020872f97
[  110.813472] R13: ffffffff87897040 R14: 0000000000000000 R15: ffff888104397d38
[  110.813995] FS:  0000000000000000(0000) GS:ffff8881d1672000(0000) knlGS:0000000000000000
[  110.814434] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  110.814669] CR2: ffff88815a80000a CR3: 000000013d6bc000 CR4: 00000000000006f0
[  110.815268] DR0: ffffffff89a52440 DR1: ffffffff89a52441 DR2: ffffffff89a52442
[  110.815581] DR3: ffffffff89a52443 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  110.816150] Call Trace:
[  110.816351]  <TASK>
[  110.816482]  ? intlog2_test+0xf2/0x220
[  110.816994]  ? __pfx_intlog2_test+0x10/0x10
[  110.817190]  ? __schedule+0x10cc/0x2b60
[  110.817355]  ? __pfx_read_tsc+0x10/0x10
[  110.817860]  ? ktime_get_ts64+0x86/0x230
[  110.818126]  kunit_try_run_case+0x1a5/0x480
[  110.818322]  ? __pfx_kunit_try_run_case+0x10/0x10
[  110.818528]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  110.818769]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  110.819305]  ? __kthread_parkme+0x82/0x180
[  110.819585]  ? preempt_count_sub+0x50/0x80
[  110.819861]  ? __pfx_kunit_try_run_case+0x10/0x10
[  110.820231]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  110.820469]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  110.820982]  kthread+0x337/0x6f0
[  110.821379]  ? trace_preempt_on+0x20/0xc0
[  110.821555]  ? __pfx_kthread+0x10/0x10
[  110.822045]  ? _raw_spin_unlock_irq+0x47/0x80
[  110.822348]  ? calculate_sigpending+0x7b/0xa0
[  110.822569]  ? __pfx_kthread+0x10/0x10
[  110.823072]  ret_from_fork+0x116/0x1d0
[  110.823280]  ? __pfx_kthread+0x10/0x10
[  110.823428]  ret_from_fork_asm+0x1a/0x30
[  110.823645]  </TASK>
[  110.823872] ---[ end trace 0000000000000000 ]---
Metadata Full log Test run details