From: Vlastimil Babka <vbabka@suse.cz>
To: Oliver Sang <oliver.sang@intel.com>
Cc: oe-lkp@lists.linux.dev, lkp@intel.com, linux-mm@kvack.org,
Harry Yoo <harry.yoo@oracle.com>
Subject: Re: [vbabka:b4/sheaves-for-all-rebased] [slab] 9b0317d1c2: xfstests.generic.629.fail
Date: Tue, 13 Jan 2026 11:07:35 +0100 [thread overview]
Message-ID: <1602fcdc-7f3f-4483-9de8-02278a0598c0@suse.cz> (raw)
In-Reply-To: <aWXnYab+ylpMAgQf@xsang-OptiPlex-9020>
On 1/13/26 7:34 AM, Oliver Sang wrote:
> hi, Vlastimil Babka,
>
> On Mon, Jan 12, 2026 at 09:34:20AM +0100, Vlastimil Babka wrote:
>> On 1/12/26 03:54, kernel test robot wrote:
>>>
>>>
>>> Hello,
>>>
>>> kernel test robot noticed "xfstests.generic.629.fail" on:
>>>
>>> commit: 9b0317d1c2ed590d69d39eba701cd3eb082ecc31 ("slab: remove cpu (partial) slabs usage from allocation paths")
>>> https://git.kernel.org/cgit/linux/kernel/git/vbabka/linux.git b4/sheaves-for-all-rebased
>>>
>>> in testcase: xfstests
>>> version: xfstests-x86_64-df16c93a-1_20260105
>>> with following parameters:
>>>
>>> disk: 4HDD
>>> fs: btrfs
>>> test: generic-629
>>>
>>>
>>>
>>> config: x86_64-rhel-9.4-func
>>> compiler: gcc-14
>>> test machine: 4 threads Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz (Skylake) with 32G memory
>>>
>>> (please refer to attached dmesg/kmsg for entire log/backtrace)
>>>
>>>
>>>
>>> If you fix the issue in a separate patch/commit (i.e. not just a new version of
>>> the same patch/commit), kindly add following tags
>>> | Reported-by: kernel test robot <oliver.sang@intel.com>
>>> | Closes: https://lore.kernel.org/oe-lkp/202601121022.41666cea-lkp@intel.com
>>>
>>> 2026-01-11 11:59:36 cd /lkp/benchmarks/xfstests
>>> 2026-01-11 11:59:37 export TEST_DIR=/fs/sdb1
>>> 2026-01-11 11:59:37 export TEST_DEV=/dev/sdb1
>>> 2026-01-11 11:59:37 export FSTYP=btrfs
>>> 2026-01-11 11:59:37 export SCRATCH_MNT=/fs/scratch
>>> 2026-01-11 11:59:37 mkdir /fs/scratch -p
>>> 2026-01-11 11:59:37 export SCRATCH_DEV_POOL="/dev/sdb2 /dev/sdb3 /dev/sdb4"
>>> 2026-01-11 11:59:37 echo generic/629
>>> 2026-01-11 11:59:37 ./check generic/629
>>> FSTYP -- btrfs
>>> PLATFORM -- Linux/x86_64 lkp-skl-d03 6.19.0-rc1-00010-g9b0317d1c2ed #1 SMP PREEMPT_DYNAMIC Sun Jan 11 19:50:05 CST 2026
>>> MKFS_OPTIONS -- /dev/sdb2
>>> MOUNT_OPTIONS -- /dev/sdb2 /fs/scratch
>>>
>>> generic/629 _check_dmesg: something found in dmesg (see /lkp/benchmarks/xfstests/results//generic/629.dmesg)
>>
>> Hm I didn't notice anything suspicious in dmesg.xz - any idea what this
>> refers to?
>
> sorry, our bot has a bug to capture serial output fully in a consistent way in
> this case.
> attached one which includes more information.
Thanks
> [ 60.803765][ T5096] ------------[ cut here ]------------
> [ 60.809075][ T5096] kmem_cache_destroy bio-240: Slab cache still has objects when called from bioset_exit+0x307/0x490
Likely the same issue as was reported for the slub kunit tests and
hopefully fixed here:
https://lore.kernel.org/all/20260112-sheaves-for-all-v2-1-98225cfb50cf@suse.cz/
> [ 60.809083][ T5096] WARNING: mm/slab_common.c:562 at kmem_cache_destroy+0x14e/0x170, CPU#1: dmsetup/5096
> [ 60.829092][ T5096] Modules linked in: dm_mod binfmt_misc snd_hda_codec_intelhdmi snd_hda_codec_hdmi snd_ctl_led snd_hda_codec_alc269 snd_hda_scodec_component snd_hda_codec_realtek_lib snd_hda_codec_generic btrfs blake2b libblake2b xor intel_rapl_msr intel_rapl_common zstd_compress raid6_pq x86_pkg_temp_thermal intel_powerclamp coretemp i915 sd_mod sg snd_hda_intel snd_soc_avs kvm_intel intel_gtt snd_soc_hda_codec platform_profile snd_hda_ext_core drm_buddy kvm dell_wmi snd_hda_codec ttm snd_hda_core snd_intel_dspcfg irqbypass snd_intel_sdw_acpi ghash_clmulni_intel dell_smbios rfkill snd_hwdep rapl dcdbas drm_display_helper mei_wdt snd_soc_core ahci snd_compress dell_wmi_descriptor intel_cstate wmi_bmof snd_pcm dell_smm_hwmon sparse_keymap cec libahci mei_me snd_timer intel_uncore mei drm_client_lib i2c_i801 i2c_smbus snd libata drm_kms_helper pcspkr soundcore intel_pch_thermal intel_pmc_core video pmt_telemetry pmt_discovery wmi pmt_class intel_pmc_ssram_telemetry intel_vsec acpi_pad fuse drm nfnetlink
> [ 60.917640][ T5096] CPU: 1 UID: 0 PID: 5096 Comm: dmsetup Tainted: G S I 6.19.0-rc1-00010-g9b0317d1c2ed #1 PREEMPT(voluntary)
> [ 60.930326][ T5096] Tainted: [S]=CPU_OUT_OF_SPEC, [I]=FIRMWARE_WORKAROUND
> [ 60.937097][ T5096] Hardware name: Dell Inc. OptiPlex 7040/0Y7WYT, BIOS 1.1.1 10/07/2015
> [ 60.945162][ T5096] RIP: 0010:kmem_cache_destroy+0x15e/0x170
> [ 60.950802][ T5096] Code: 5b 5d e9 85 47 11 00 c3 cc cc cc cc e8 1b 1e a2 ff eb 9b 48 8d 3d 42 87 64 04 48 8b 53 68 48 8b 4c 24 10 48 c7 c6 70 09 3e 84 <67> 48 0f b9 3a e9 18 ff ff ff 0f 1f 84 00 00 00 00 00 90 90 90 90
> [ 60.970186][ T5096] RSP: 0018:ffffc90004027818 EFLAGS: 00010202
> [ 60.976081][ T5096] RAX: 0000000000000001 RBX: ffff888214f277c0 RCX: ffffffff8271f597
> [ 60.983898][ T5096] RDX: ffff888111b2d760 RSI: ffffffff843e0970 RDI: ffffffff8633a210
> [ 60.991688][ T5096] RBP: 0000000000000001 R08: 0000000000000000 R09: ffffed10fbd98579
> [ 60.999481][ T5096] R10: ffff8887decc2bcf R11: 0000000000002710 R12: 00000000000000f0
> [ 61.007288][ T5096] R13: ffff888214f277c0 R14: ffff8881e393c0b8 R15: ffff8881e393c050
> [ 61.015110][ T5096] FS: 00007f8dbc0b7d80(0000) GS:ffff888857975000(0000) knlGS:0000000000000000
> [ 61.023865][ T5096] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 61.030275][ T5096] CR2: 00007f637994641c CR3: 0000000159b52006 CR4: 00000000003726f0
> [ 61.038065][ T5096] Call Trace:
> [ 61.041194][ T5096] <TASK>
> [ 61.043988][ T5096] bioset_exit+0x307/0x490
> [ 61.048245][ T5096] cleanup_mapped_device+0x8b/0x480 [dm_mod]
> [ 61.054102][ T5096] __dm_destroy+0x322/0x550 [dm_mod]
> [ 61.059258][ T5096] ? __pfx_dev_remove+0x10/0x10 [dm_mod]
> [ 61.064755][ T5096] dev_remove+0x231/0x300 [dm_mod]
> [ 61.069715][ T5096] ctl_ioctl+0x380/0x710 [dm_mod]
> [ 61.074590][ T5096] ? __pfx_ctl_ioctl+0x10/0x10 [dm_mod]
> [ 61.079981][ T5096] ? _raw_spin_lock+0x80/0xe0
> [ 61.084508][ T5096] ? fdget+0x54/0x3b0
> [ 61.088325][ T5096] ? kmem_cache_free+0x294/0x510
> [ 61.093097][ T5096] dm_ctl_ioctl+0xa/0x20 [dm_mod]
> [ 61.097970][ T5096] __x64_sys_ioctl+0x135/0x1c0
> [ 61.102568][ T5096] do_syscall_64+0x7b/0x6c0
> [ 61.106933][ T5096] ? do_semtimedop+0x228/0x2a0
> [ 61.111533][ T5096] ? __pfx_ksys_semctl+0x10/0x10
> [ 61.117340][ T5096] ? __pfx_ksys_semctl+0x10/0x10
> [ 61.123145][ T5096] ? __virt_addr_valid+0xc4/0x200
> [ 61.128016][ T5096] ? rcu_segcblist_enqueue+0x1d/0xe0
> [ 61.133159][ T5096] ? __call_rcu_common+0x341/0x950
> [ 61.139137][ T5096] ? kasan_unpoison+0x40/0x70
> [ 61.143648][ T5096] ? __pfx___call_rcu_common+0x10/0x10
> [ 61.149973][ T5096] ? __kasan_slab_alloc+0x2f/0x70
> [ 61.154838][ T5096] ? do_syscall_64+0xb2/0x6c0
> [ 61.159353][ T5096] ? kmem_cache_free+0x2a7/0x510
> [ 61.164142][ T5096] ? fput_close_sync+0xd8/0x190
> [ 61.168831][ T5096] ? fput_close_sync+0xd8/0x190
> [ 61.173537][ T5096] ? __x64_sys_semtimedop+0x153/0x1a0
> [ 61.178749][ T5096] ? __pfx___x64_sys_semtimedop+0x10/0x10
> [ 61.184308][ T5096] ? __x64_sys_close+0x79/0xd0
> [ 61.188919][ T5096] ? do_syscall_64+0xb2/0x6c0
> [ 61.193429][ T5096] ? do_syscall_64+0xb2/0x6c0
> [ 61.197943][ T5096] ? do_syscall_64+0xb2/0x6c0
> [ 61.202453][ T5096] ? irqentry_exit+0x76/0x4d0
> [ 61.206963][ T5096] entry_SYSCALL_64_after_hwframe+0x76/0x7e
> [ 61.212686][ T5096] RIP: 0033:0x7f8dbc3eb8db
> [ 61.216978][ T5096] Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
> [ 61.236339][ T5096] RSP: 002b:00007ffdb55284a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
> [ 61.240308][ T259] 2026-01-11 12:02:14.799418 (+0000) -73855.722057 +/- 0.000324 internal-lkp-server 192.168.1.200 s5 no-leap
> [ 61.244561][ T5096] RAX: ffffffffffffffda RBX: 00007f8dbc4e2bd6 RCX: 00007f8dbc3eb8db
> [ 61.244563][ T5096] RDX: 000055c5ab615b30 RSI: 00000000c138fd04 RDI: 0000000000000004
> [ 61.244588][ T259]
> [ 61.255911][ T5096] RBP: 00007ffdb55285c0 R08: 00007f8dbc535968 R09: 00007ffdb5528350
> [ 61.255926][ T5096] R10: 00007f8dbc534d18 R11: 0000000000000246 R12: 00007f8dbc534d18
> [ 61.264411][ T259] INFO: lkp CACHE_DIR is /opt/rootfs/tmp
> [ 61.271491][ T5096] R13: 00007f8dbc534d18 R14: 00007f8dbc534d18 R15: 00007f8dbc534d18
> [ 61.271495][ T5096] </TASK>
> [ 61.273670][ T259]
> [ 61.281448][ T5096] ---[ end trace 0000000000000000 ]---
>
>
>>
>>> Ran: generic/629
>>> Failures: generic/629
>>> Failed 1 of 1 tests
>>>
>>>
>>>
>>>
>>> The kernel config and materials to reproduce are available at:
>>> https://download.01.org/0day-ci/archive/20260112/202601121022.41666cea-lkp@intel.com
>>>
>>>
>>>
>>
prev parent reply other threads:[~2026-01-13 10:07 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-12 2:54 kernel test robot
2026-01-12 8:34 ` Vlastimil Babka
2026-01-13 6:34 ` Oliver Sang
2026-01-13 10:07 ` Vlastimil Babka [this message]
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