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Date
July 20, 2025, 8:11 p.m.

Environment
qemu-arm64
qemu-x86_64 

------------[ cut here ]------------
[   26.444473] WARNING: CPU: 0 PID: 415 at lib/math/int_log.c:63 intlog2+0xb8/0x118
[   26.446111] Modules linked in:
[   26.446578] CPU: 0 UID: 0 PID: 415 Comm: kunit_try_catch Tainted: G      D          N  6.16.0-rc6 #1 PREEMPT 
[   26.447663] Tainted: [D]=DIE, [N]=TEST
[   26.448095] Hardware name: linux,dummy-virt (DT)
[   26.448659] pstate: 82402009 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
[   26.449447] pc : intlog2+0xb8/0x118
[   26.449720] lr : intlog2_test+0x88/0x180
[   26.449915] sp : ffff800080fd7cd0
[   26.450076] x29: ffff800080fd7cf0 x28: dfff800000000000 x27: 1ffe000018f76945
[   26.450463] x26: fff00000c75afba0 x25: ffff8000800878a8 x24: 0000000000000000
[   26.451381] x23: dfff800000000000 x22: fff00000c7bb5418 x21: ffff9f6a32f5e790
[   26.452349] x20: ffff9f6a313d6740 x19: ffff800080087b08 x18: ffff800080097920
[   26.453124] x17: ffff80008009791c x16: 0000000000001930 x15: 0000000000000001
[   26.453839] x14: 1ffff3ed468a2280 x13: 0000000000000000 x12: 0000000000000000
[   26.454212] x11: ffff73ed468a2281 x10: 0000000000000017 x9 : 0000000000000007
[   26.454601] x8 : 0000000000000000 x7 : ffff80008009792c x6 : 0000000000000014
[   26.455066] x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff9f6a2e97d824
[   26.455575] x2 : 0000000000000000 x1 : 00000000002a66c9 x0 : 0000000000000000
[   26.456052] Call trace:
[   26.456220]  intlog2+0xb8/0x118 (P)
[   26.456465]  intlog2_test+0x88/0x180
[   26.456687]  kunit_try_run_case+0x118/0x31c
[   26.456999]  kunit_generic_run_threadfn_adapter+0x84/0x104
[   26.457293]  kthread+0x3f4/0x51c
[   26.457535]  ret_from_fork+0x10/0x20
[   26.457830] ---[ end trace 0000000000000000 ]---
Metadata Full log Test run details 

------------[ cut here ]------------
[   25.682433] WARNING: CPU: 1 PID: 415 at lib/math/int_log.c:63 intlog2+0xb8/0x118
[   25.683426] Modules linked in:
[   25.683700] CPU: 1 UID: 0 PID: 415 Comm: kunit_try_catch Tainted: G      D          N  6.16.0-rc6 #1 PREEMPT 
[   25.684157] Tainted: [D]=DIE, [N]=TEST
[   25.684338] Hardware name: linux,dummy-virt (DT)
[   25.684560] pstate: 81400009 (Nzcv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
[   25.684925] pc : intlog2+0xb8/0x118
[   25.685156] lr : intlog2_test+0x88/0x180
[   25.685391] sp : ffff800081fb7cd0
[   25.685577] x29: ffff800081fb7cf0 x28: dfff800000000000 x27: 1ffe000018f8f6f5
[   25.686021] x26: fff00000c7c9c1a0 x25: ffff8000800878a8 x24: 0000000000000000
[   25.686454] x23: dfff800000000000 x22: fff00000c7c7c198 x21: ffffa8c8ae55e790
[   25.687023] x20: ffffa8c8ac9e5820 x19: ffff800080087b08 x18: 0000000000000002
[   25.687409] x17: 0000000000000075 x16: 0000000000000000 x15: 0000000000000001
[   25.687878] x14: 1ffff51915f62080 x13: 0000000000000000 x12: 0000000000000000
[   25.688313] x11: ffff751915f62081 x10: 0000000000000017 x9 : 0000000000000007
[   25.688759] x8 : 0000000000000000 x7 : 0000000078d1c00f x6 : 00000000d06e44cc
[   25.689233] x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffffa8c8a9f83738
[   25.689643] x2 : 0000000000000000 x1 : 0000000000457928 x0 : 0000000000000000
[   25.690099] Call trace:
[   25.690269]  intlog2+0xb8/0x118 (P)
[   25.690520]  intlog2_test+0x88/0x180
[   25.690730]  kunit_try_run_case+0x118/0x31c
[   25.691223]  kunit_generic_run_threadfn_adapter+0x84/0x104
[   25.691525]  kthread+0x3f4/0x51c
[   25.691751]  ret_from_fork+0x10/0x20
[   25.692061] ---[ end trace 0000000000000000 ]---
Metadata Full log Test run details 

------------[ cut here ]------------
[   93.169975] WARNING: CPU: 0 PID: 639 at lib/math/int_log.c:63 intlog2+0xd8/0xf8
[   93.172895] Modules linked in:
[   93.173137] CPU: 0 UID: 0 PID: 639 Comm: kunit_try_catch Tainted: G    B D          N  6.16.0-rc6 #1 PREEMPT 
[   93.174271] Tainted: [B]=BAD_PAGE, [D]=DIE, [N]=TEST
[   93.174822] Hardware name: linux,dummy-virt (DT)
[   93.175305] pstate: 12402009 (nzcV daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
[   93.175945] pc : intlog2+0xd8/0xf8
[   93.176317] lr : intlog2_test+0xe4/0x200
[   93.176793] sp : ffff800082197c10
[   93.177183] x29: ffff800082197c90 x28: 0000000000000000 x27: 0000000000000000
[   93.178034] x26: 1ffe000018b4b701 x25: 0000000000000000 x24: ffff800082197ce0
[   93.178592] x23: ffff800082197d00 x22: 0000000000000000 x21: 1ffff00010432f82
[   93.178950] x20: ffff9b2f75689d80 x19: ffff800080087990 x18: 000000005757c424
[   93.179317] x17: 0000000002dca390 x16: fff00000c097543c x15: fff00000ff616b08
[   93.179670] x14: 0000000000018fff x13: 1ffe00001b48e9cd x12: ffff7365ef2a3379
[   93.180063] x11: 1ffff365ef2a3378 x10: ffff7365ef2a3378 x9 : ffff9b2f72c36b9c
[   93.181146] x8 : ffff9b2f79519bc3 x7 : 0000000000000001 x6 : 00000000f1f1f1f1
[   93.182305] x5 : ffff700010432f82 x4 : 1ffff00010010f3a x3 : 1ffff365eead13b0
[   93.182681] x2 : 1ffff365eead13b0 x1 : 0000000000000003 x0 : 0000000000000000
[   93.183034] Call trace:
[   93.183176]  intlog2+0xd8/0xf8 (P)
[   93.183381]  kunit_try_run_case+0x170/0x3f0
[   93.183587]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   93.183834]  kthread+0x328/0x630
[   93.184016]  ret_from_fork+0x10/0x20
[   93.185556] ---[ end trace 0000000000000000 ]---
Metadata Full log Test run details 

------------[ cut here ]------------
[   28.863810] WARNING: CPU: 0 PID: 417 at lib/math/int_log.c:63 intlog2+0xd0/0xe8
[   28.866426] Modules linked in:
[   28.867081] CPU: 0 UID: 0 PID: 417 Comm: kunit_try_catch Tainted: G      D          N  6.16.0-rc6 #1 PREEMPT 
[   28.868175] Tainted: [D]=DIE, [N]=TEST
[   28.868759] Hardware name: linux,dummy-virt (DT)
[   28.869377] pstate: 12402009 (nzcV daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
[   28.870270] pc : intlog2+0xd0/0xe8
[   28.870585] lr : intlog2_test+0xdc/0x1f0
[   28.870771] sp : ffff800080fe7c10
[   28.870926] x29: ffff800080fe7c90 x28: 0000000000000000 x27: 0000000000000000
[   28.871278] x26: 1ffe000018f5da21 x25: fff00000c7ac3780 x24: 0000000000000004
[   28.871904] x23: fff00000c7ac3780 x22: 0000000000000000 x21: 1ffff000101fcf82
[   28.872791] x20: ffff92f6f92cfd40 x19: ffff8000800879a0 x18: 1ffff00010012ece
[   28.873779] x17: fff00000c0369288 x16: fff00000c089763c x15: 0000000000007eb0
[   28.874777] x14: 1ffe00001b521ed5 x13: 1ffe000018f586f2 x12: ffff725edf903d39
[   28.875901] x11: 1ffff25edf903d38 x10: ffff725edf903d38 x9 : dfff800000000000
[   28.876740] x8 : ffff92f6fc81e9c3 x7 : 0000000000000001 x6 : 00000000f1f1f1f1
[   28.877663] x5 : ffff7000101fcf82 x4 : 1ffff00010010f3c x3 : 1ffff25edf259fa8
[   28.878621] x2 : 1ffff25edf259fa8 x1 : 0000000000000003 x0 : 0000000000000000
[   28.879239] Call trace:
[   28.879389]  intlog2+0xd0/0xe8 (P)
[   28.879576]  kunit_try_run_case+0x144/0x3bc
[   28.880556]  kunit_generic_run_threadfn_adapter+0x80/0xec
[   28.881204]  kthread+0x37c/0x67c
[   28.881413]  ret_from_fork+0x10/0x20
[   28.881676] ---[ end trace 0000000000000000 ]---
Metadata Full log Test run details 

------------[ cut here ]------------
[   31.930553] WARNING: CPU: 0 PID: 415 at lib/math/int_log.c:63 intlog2+0xd4/0xec
[   31.936444] Modules linked in:
[   31.936869] CPU: 0 UID: 0 PID: 415 Comm: kunit_try_catch Tainted: G      D          N  6.16.0-rc6 #1 PREEMPT 
[   31.937836] Tainted: [D]=DIE, [N]=TEST
[   31.938029] Hardware name: linux,dummy-virt (DT)
[   31.938242] pstate: 11400009 (nzcV daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
[   31.938539] pc : intlog2+0xd4/0xec
[   31.938730] lr : intlog2_test+0xdc/0x1e0
[   31.938972] sp : ffff800082067bf0
[   31.939173] x29: ffff800082067bf0 x28: 0000000000000000 x27: 0000000000000000
[   31.939651] x26: 0000000000000000 x25: fff00000c7a45c80 x24: fff00000c7a45c80
[   31.940242] x23: 0000000000000000 x22: ffff9fdaa43e87f8 x21: ffff9fdaa2d3fba0
[   31.940854] x20: 1ffff0001040cf86 x19: ffff800080087a00 x18: 00000000000010d8
[   31.941229] x17: 00000000000010e0 x16: 00000000000010e8 x15: 00000000000010f0
[   31.941600] x14: 00000000000010f8 x13: ffff73fb5503d129 x12: 1ffff3fb5503d128
[   31.942101] x11: 1ffff3fb5503d128 x10: ffff73fb5503d128 x9 : dfff800000000000
[   31.942653] x8 : 0000000000000001 x7 : ffff73fb5503d129 x6 : ffff9fdaa81e8943
[   31.943176] x5 : 0000000041b58ab3 x4 : ffff70001040cf86 x3 : 1ffff3fb545a7f74
[   31.943684] x2 : 1ffff3fb545a7f74 x1 : 0000000000000003 x0 : 0000000000000000
[   31.944283] Call trace:
[   31.944524]  intlog2+0xd4/0xec (P)
[   31.944804]  kunit_try_run_case+0x144/0x3bc
[   31.945146]  kunit_generic_run_threadfn_adapter+0x80/0xec
[   31.945524]  kthread+0x3f0/0x744
[   31.945777]  ret_from_fork+0x10/0x20
[   31.946092] ---[ end trace 0000000000000000 ]---
Metadata Full log Test run details 

------------[ cut here ]------------
[  112.964185] WARNING: CPU: 0 PID: 656 at lib/math/int_log.c:63 intlog2+0xdf/0x110
[  112.965173] Modules linked in:
[  112.965824] CPU: 0 UID: 0 PID: 656 Comm: kunit_try_catch Tainted: G    B D          N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[  112.967348] Tainted: [B]=BAD_PAGE, [D]=DIE, [N]=TEST
[  112.967866] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[  112.969123] RIP: 0010:intlog2+0xdf/0x110
[  112.969572] Code: 69 ab 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 17 ba 86 02 89 45 e4 e8 5f c7 55 ff 8b 45 e4 eb
[  112.970630] RSP: 0000:ffff8881040bfcb0 EFLAGS: 00010246
[  112.970840] RAX: 0000000000000000 RBX: ffff88810039fae8 RCX: 1ffff11020817fb4
[  112.971052] RDX: 1ffffffff56d2e40 RSI: 1ffff11020817fb3 RDI: 0000000000000000
[  112.971261] RBP: ffff8881040bfd60 R08: 0000000000000000 R09: ffffed1020ec7da0
[  112.971487] R10: ffff88810763ed07 R11: 0000000000000000 R12: 1ffff11020817f97
[  112.971804] R13: ffffffffab697200 R14: 0000000000000000 R15: ffff8881040bfd38
[  112.972224] FS:  0000000000000000(0000) GS:ffff8881ad872000(0000) knlGS:0000000000000000
[  112.972617] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  112.972928] CR2: dffffc0000000000 CR3: 000000002e8bc000 CR4: 00000000000006f0
[  112.973357] DR0: ffffffffad852440 DR1: ffffffffad852441 DR2: ffffffffad852442
[  112.973696] DR3: ffffffffad852443 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[  112.974260] Call Trace:
[  112.974377]  <TASK>
[  112.974518]  ? intlog2_test+0xf2/0x220
[  112.974791]  ? __pfx_intlog2_test+0x10/0x10
[  112.975006]  ? __schedule+0x10c6/0x2b60
[  112.975326]  ? __pfx_read_tsc+0x10/0x10
[  112.975552]  ? ktime_get_ts64+0x86/0x230
[  112.975797]  kunit_try_run_case+0x1a5/0x480
[  112.976200]  ? __pfx_kunit_try_run_case+0x10/0x10
[  112.976396]  ? _raw_spin_lock_irqsave+0xa1/0x100
[  112.976639]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[  112.976938]  ? __kthread_parkme+0x82/0x180
[  112.977265]  ? preempt_count_sub+0x50/0x80
[  112.977492]  ? __pfx_kunit_try_run_case+0x10/0x10
[  112.977699]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[  112.978006]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[  112.978405]  kthread+0x337/0x6f0
[  112.978628]  ? trace_preempt_on+0x20/0xc0
[  112.978863]  ? __pfx_kthread+0x10/0x10
[  112.979183]  ? _raw_spin_unlock_irq+0x47/0x80
[  112.979473]  ? calculate_sigpending+0x7b/0xa0
[  112.979680]  ? __pfx_kthread+0x10/0x10
[  112.979904]  ret_from_fork+0x116/0x1d0
[  112.980204]  ? __pfx_kthread+0x10/0x10
[  112.980408]  ret_from_fork_asm+0x1a/0x30
[  112.980635]  </TASK>
[  112.980845] ---[ end trace 0000000000000000 ]---
Metadata Full log Test run details