BUG: kworker memory leak found in 6.1.0-rc3

From: Mirsad Goran Todorovac
Date: Fri Nov 04 2022 - 06:40:47 EST

Next message: Anirudh Rayabharam: "Re: [PATCH v3 2/5] Drivers: hv: Setup synic registers in case of nested root partition"
Previous message: Thorsten Leemhuis: "Re: dpkg fails on sparc64 (was: [PATCH v4 4/7] mm/thp: Carry over dirty bit when thp splits on pmd) #forregzbot"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

Dear Sirs,

When building a RPM 6.1.0-rc3 for AlmaLinux 8.6, I have enabled CONFIG_DEBUG_KMEMLEAK=y
and the result showed an unreferenced object in kworker process:

# cat /sys/kernel/debug/kmemleak
unreferenced object 0xffffa01dabff6100 (size 16):
comm "kworker/u12:4", pid 400, jiffies 4294894771 (age 5284.956s)
hex dump (first 16 bytes):
    6d 65 6d 73 74 69 63 6b 30 00 00 00 00 00 00 00 memstick0.......
backtrace:
    [<000000009ff951f6>] __kmem_cache_alloc_node+0x380/0x4e0
    [<00000000451f4268>] __kmalloc_node_track_caller+0x55/0x150
    [<0000000005472512>] kstrdup+0x36/0x70
    [<000000002f797ac4>] kstrdup_const+0x28/0x30
    [<00000000e3f86581>] kvasprintf_const+0x78/0xa0
    [<00000000e15920f7>] kobject_set_name_vargs+0x23/0xa0
    [<000000004158a6c0>] dev_set_name+0x53/0x70
    [<000000001a120541>] memstick_check+0xff/0x384 [memstick]
    [<00000000122bb894>] process_one_work+0x214/0x3f0
    [<00000000fcf282cc>] worker_thread+0x34/0x3d0
    [<0000000002409855>] kthread+0xed/0x120
    [<000000007b02b4a3>] ret_from_fork+0x1f/0x30
unreferenced object 0xffffa01dabff6ec0 (size 16):
comm "kworker/u12:4", pid 400, jiffies 4294894774 (age 5284.944s)
hex dump (first 16 bytes):
    6d 65 6d 73 74 69 63 6b 30 00 00 00 00 00 00 00 memstick0.......
backtrace:
    [<000000009ff951f6>] __kmem_cache_alloc_node+0x380/0x4e0
    [<00000000451f4268>] __kmalloc_node_track_caller+0x55/0x150
    [<0000000005472512>] kstrdup+0x36/0x70
    [<000000002f797ac4>] kstrdup_const+0x28/0x30
    [<00000000e3f86581>] kvasprintf_const+0x78/0xa0
    [<00000000e15920f7>] kobject_set_name_vargs+0x23/0xa0
    [<000000004158a6c0>] dev_set_name+0x53/0x70
    [<000000001a120541>] memstick_check+0xff/0x384 [memstick]
    [<00000000122bb894>] process_one_work+0x214/0x3f0
    [<00000000fcf282cc>] worker_thread+0x34/0x3d0
    [<0000000002409855>] kthread+0xed/0x120
    [<000000007b02b4a3>] ret_from_fork+0x1f/0x30
#

Please fing the build config and lshw output attached.

dmesg is useless, as it is filled with events like:

[ 6068.996120] evbug: Event. Dev: input4, Type: 1, Code: 31, Value: 0
[ 6068.996121] evbug: Event. Dev: input4, Type: 0, Code: 0, Value: 0
[ 6069.124145] evbug: Event. Dev: input4, Type: 4, Code: 4, Value: 458762
[ 6069.124149] evbug: Event. Dev: input4, Type: 1, Code: 34, Value: 1
[ 6069.124150] evbug: Event. Dev: input4, Type: 0, Code: 0, Value: 0
[ 6069.196003] evbug: Event. Dev: input4, Type: 4, Code: 4, Value: 458762
[ 6069.196007] evbug: Event. Dev: input4, Type: 1, Code: 34, Value: 0
[ 6069.196009] evbug: Event. Dev: input4, Type: 0, Code: 0, Value: 0
[ 6069.788129] evbug: Event. Dev: input4, Type: 4, Code: 4, Value: 458792
[ 6069.788133] evbug: Event. Dev: input4, Type: 1, Code: 28, Value: 1
[ 6069.788135] evbug: Event. Dev: input4, Type: 0, Code: 0, Value: 0

Thank you,

Mirsad

--
Mirsad Goran Todorovac
Sistem inženjer
Grafički fakultet | Akademija likovnih umjetnosti
Sveučilište u Zagrebu
--
System engineer
Faculty of Graphic Arts | Academy of Fine Arts
University of Zagreb, Republic of Croatia
pc-mtodorov.slava.alu.hr
description: Desktop Computer
product: 10TX000VCR (LENOVO_MT_10TX_BU_Lenovo_FM_V530S-07ICB)
vendor: LENOVO
version: V530S-07ICB
serial: YL004CDC
width: 64 bits
capabilities: smbios-3.1.1 dmi-3.1.1 smp vsyscall32
configuration: administrator_password=disabled boot=normal chassis=desktop family=V530S-07ICB keyboard_password=enabled power-on_password=disabled sku=LENOVO_MT_10TX_BU_Lenovo_FM_V530S-07ICB uuid=4fb93a00-bb35-11e8-bb0a-59599e0a2e00
*-core
description: Motherboard
product: 3140
vendor: LENOVO
physical id: 0
version: SDK0J40697 WIN 3305148204708
slot: Default string
*-firmware
description: BIOS
vendor: LENOVO
physical id: 0
version: M22KT23A
date: 07/16/2018
size: 64KiB
capacity: 16MiB
capabilities: pci upgrade shadowing cdboot bootselect socketedrom edd int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer acpi usb biosbootspecification uefi
*-memory
description: System Memory
physical id: 3b
slot: System board or motherboard
size: 16GiB
*-bank:0
description: DIMM DDR4 Synchronous 2666 MHz (0.4 ns)
product: RMUA5110ME78HAF-2666
vendor: Fujitsu
physical id: 0
serial: 14903C7C
slot: ChannelA-DIMM1
size: 8GiB
width: 64 bits
clock: 2666MHz (0.4ns)
*-bank:1
description: DIMM DDR4 Synchronous 2666 MHz (0.4 ns)
product: JM2666HLB-8G
vendor: Transcend
physical id: 1
serial: 00002814
slot: ChannelB-DIMM2
size: 8GiB
width: 64 bits
clock: 2666MHz (0.4ns)
*-cache:0
description: L1 cache
physical id: 45
slot: L1 Cache
size: 384KiB
capacity: 384KiB
capabilities: synchronous internal write-back unified
configuration: level=1
*-cache:1
description: L2 cache
physical id: 46
slot: L2 Cache
size: 1536KiB
capacity: 1536KiB
capabilities: synchronous internal write-back unified
configuration: level=2
*-cache:2
description: L3 cache
physical id: 47
slot: L3 Cache
size: 9MiB
capacity: 9MiB
capabilities: synchronous internal write-back unified
configuration: level=3
*-cpu
description: CPU
product: Intel(R) Core(TM) i5-8400 CPU @ 2.80GHz
vendor: Intel Corp.
physical id: 48
bus info: cpu@0
version: 6.158.10
serial: To Be Filled By O.E.M.
slot: U3E1
size: 3860MHz
capacity: 4005MHz
width: 64 bits
clock: 100MHz
capabilities: lm fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp x86-64 constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp flush_l1d cpufreq
configuration: cores=6 enabledcores=6 microcode=150 threads=6
*-pci
description: Host bridge
product: 8th Gen Core Processor Host Bridge/DRAM Registers
vendor: Intel Corporation
physical id: 100
bus info: pci@0000:00:00.0
version: 07
width: 32 bits
clock: 33MHz
configuration: driver=skl_uncore
resources: irq:0
*-display
description: VGA compatible controller
product: CoffeeLake-S GT2 [UHD Graphics 630]
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
logical name: /dev/fb0
version: 00
width: 64 bits
clock: 33MHz
capabilities: pciexpress msi pm vga_controller bus_master cap_list rom fb
configuration: depth=32 driver=i915 latency=0 resolution=1920,1080
resources: irq:124 memory:a0000000-a0ffffff memory:90000000-9fffffff ioport:4000(size=64) memory:c0000-dffff
*-generic:0 UNCLAIMED
description: System peripheral
product: Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th/8th Gen Core Processor Gaussian Mixture Model
vendor: Intel Corporation
physical id: 8
bus info: pci@0000:00:08.0
version: 00
width: 64 bits
clock: 33MHz
capabilities: msi pm cap_list
configuration: latency=0
resources: memory:a1221000-a1221fff
*-generic:1
description: Signal processing controller
product: Cannon Lake PCH Thermal Controller
vendor: Intel Corporation
physical id: 12
bus info: pci@0000:00:12.0
version: 10
width: 64 bits
clock: 33MHz
capabilities: pm msi cap_list
configuration: driver=intel_pch_thermal latency=0
resources: irq:16 memory:a1220000-a1220fff
*-usb
description: USB controller
product: Cannon Lake PCH USB 3.1 xHCI Host Controller
vendor: Intel Corporation
physical id: 14
bus info: pci@0000:00:14.0
version: 10
width: 64 bits
clock: 33MHz
capabilities: pm msi xhci bus_master cap_list
configuration: driver=xhci_hcd latency=0
resources: irq:121 memory:a1200000-a120ffff
*-usbhost:0
product: xHCI Host Controller
vendor: Linux 6.1.0-rc3 xhci-hcd
physical id: 0
bus info: usb@1
logical name: usb1
version: 6.01
capabilities: usb-2.00
configuration: driver=hub slots=16 speed=480Mbit/s
*-usb:0
description: Mouse
product: PixArt lenovo USB Optical Mouse
vendor: PixArt
physical id: 3
bus info: usb@1:3
logical name: input3
logical name: /dev/input/event3
logical name: /dev/input/mouse0
version: 1.00
capabilities: usb-2.00 usb
configuration: driver=usbhid maxpower=100mA speed=2Mbit/s
*-usb:1
description: Keyboard
product: Lenovo Lenovo Calliope USB Keyboard Consumer Control
vendor: Lenovo
physical id: 4
bus info: usb@1:4
logical name: input4
logical name: /dev/input/event4
logical name: input4::capslock
logical name: input4::numlock
logical name: input4::scrolllock
logical name: input5
logical name: /dev/input/event5
logical name: input6
logical name: /dev/input/event6
logical name: /dev/input/js0
version: 2.18
capabilities: usb-2.00 usb
configuration: driver=usbhid maxpower=100mA speed=2Mbit/s
*-usb:2
description: MMC Host
product: USB2.0-CRW
vendor: Generic
physical id: 6
bus info: usb@1:6
logical name: mmc0
version: 39.60
serial: 20100201396000000
capabilities: usb-2.00
configuration: driver=rtsx_usb maxpower=500mA speed=480Mbit/s
*-usbhost:1
product: xHCI Host Controller
vendor: Linux 6.1.0-rc3 xhci-hcd
physical id: 1
bus info: usb@2
logical name: usb2
version: 6.01
capabilities: usb-3.10
configuration: driver=hub slots=6 speed=10000Mbit/s
*-memory UNCLAIMED
description: RAM memory
product: Cannon Lake PCH Shared SRAM
vendor: Intel Corporation
physical id: 14.2
bus info: pci@0000:00:14.2
version: 10
width: 64 bits
clock: 33MHz (30.3ns)
capabilities: pm cap_list
configuration: latency=0
resources: memory:a1216000-a1217fff memory:a121f000-a121ffff
*-serial:0
description: Serial bus controller
product: Cannon Lake PCH Serial IO I2C Controller #0
vendor: Intel Corporation
physical id: 15
bus info: pci@0000:00:15.0
version: 10
width: 64 bits
clock: 33MHz
capabilities: pm bus_master cap_list
configuration: driver=intel-lpss latency=0
resources: irq:16 memory:a1219000-a1219fff
*-serial:1
description: Serial bus controller
product: Cannon Lake PCH Serial IO I2C Controller #1
vendor: Intel Corporation
physical id: 15.1
bus info: pci@0000:00:15.1
version: 10
width: 64 bits
clock: 33MHz
capabilities: pm bus_master cap_list
configuration: driver=intel-lpss latency=0
resources: irq:17 memory:a121d000-a121dfff
*-communication:0
description: Communication controller
product: Cannon Lake PCH HECI Controller
vendor: Intel Corporation
physical id: 16
bus info: pci@0000:00:16.0
version: 10
width: 64 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list
configuration: driver=mei_me latency=0
resources: irq:125 memory:a121c000-a121cfff
*-sata
description: SATA controller
product: Cannon Lake PCH SATA AHCI Controller
vendor: Intel Corporation
physical id: 17
bus info: pci@0000:00:17.0
logical name: scsi0
logical name: scsi1
version: 10
width: 32 bits
clock: 66MHz
capabilities: sata msi pm ahci_1.0 bus_master cap_list emulated
configuration: driver=ahci latency=0
resources: irq:122 memory:a1214000-a1215fff memory:a121b000-a121b0ff ioport:4090(size=8) ioport:4080(size=4) ioport:4060(size=32) memory:a121a000-a121a7ff
*-disk
description: ATA Disk
product: WDC WDS500G2B0A
vendor: Western Digital
physical id: 0
bus info: scsi@0:0.0.0
logical name: /dev/sda
version: 20WD
serial: 21251V800740
size: 465GiB (500GB)
capabilities: gpt-1.00 partitioned partitioned:gpt
configuration: ansiversion=5 guid=337420f3-fbd8-437d-ab9c-1a5f5f14c1d1 logicalsectorsize=512 sectorsize=512
*-volume:0
description: reserved partition
vendor: Windows
physical id: 1
bus info: scsi@0:0.0.0,1
logical name: /dev/sda1
serial: 9e53775b-0aa1-4b97-93da-0e4e1531d755
capacity: 15MiB
capabilities: nofs
configuration: name=Microsoft reserved partition
*-volume:1
description: Windows NTFS volume
vendor: Windows
physical id: 2
bus info: scsi@0:0.0.0,2
logical name: /dev/sda2
version: 3.1
serial: e40c9218-ef8c-4e46-947e-2f1c19b65ae3
size: 292GiB
capacity: 292GiB
capabilities: ntfs initialized
configuration: clustersize=4096 created=2021-09-30 16:24:41 filesystem=ntfs label=New Volume name=Basic data partition state=clean
*-volume:2
description: Windows NTFS volume
vendor: Windows
physical id: 3
bus info: scsi@0:0.0.0,3
logical name: /dev/sda3
version: 3.1
serial: 28ff-3849
size: 488MiB
capacity: 507MiB
capabilities: boot precious ntfs initialized
configuration: clustersize=4096 created=2021-10-20 10:53:48 filesystem=ntfs state=clean
*-volume:3
description: Windows FAT volume
vendor: MSDOS5.0
physical id: 4
bus info: scsi@0:0.0.0,4
logical name: /dev/sda4
logical name: /boot/efi
version: FAT32
serial: 161a-4187
size: 80MiB
capacity: 99MiB
capabilities: boot fat initialized
configuration: FATs=2 filesystem=fat mount.fstype=vfat mount.options=rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=iso8859-1,shortname=winnt,errors=remount-ro name=EFI System Partition state=mounted
*-volume:4 UNCLAIMED
description: EFI partition
physical id: 5
bus info: scsi@0:0.0.0,5
serial: 215919e7-bba2-422f-b239-ce4814c65c12
capacity: 1023MiB
*-volume:5
description: LVM Physical Volume
vendor: Linux
physical id: 6
bus info: scsi@0:0.0.0,6
logical name: /dev/sda6
serial: 5mgsOO-lX9e-wV9r-GPcp-1VBx-UJpx-3uWLde
size: 170GiB
capabilities: multi lvm2
*-cdrom
description: DVD-RAM writer
product: DVDRAM GUE0N
vendor: HL-DT-ST
physical id: 1
bus info: scsi@1:0.0.0
logical name: /dev/cdrom
logical name: /dev/sr0
version: T.02
capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram
configuration: ansiversion=5 status=nodisc
*-pci
description: PCI bridge
product: Cannon Lake PCH PCI Express Root Port #7
vendor: Intel Corporation
physical id: 1c
bus info: pci@0000:00:1c.0
version: f0
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:120 ioport:3000(size=4096) memory:a1100000-a11fffff
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:01:00.0
logical name: enp1s0
version: 15
serial: f4:93:9f:f0:a5:f5
size: 1Gbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=6.1.0-rc3 duplex=full firmware=rtl8168h-2_0.0.2 02/26/15 ip=193.198.186.200 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
resources: irq:18 ioport:3000(size=256) memory:a1104000-a1104fff memory:a1100000-a1103fff
*-communication:1
description: Communication controller
product: Cannon Lake PCH Serial IO UART Host Controller
vendor: Intel Corporation
physical id: 1e
bus info: pci@0000:00:1e.0
version: 10
width: 64 bits
clock: 33MHz
capabilities: pm bus_master cap_list
configuration: driver=intel-lpss latency=0
resources: irq:20 memory:a121e000-a121efff
*-isa
description: ISA bridge
product: Intel Corporation
vendor: Intel Corporation
physical id: 1f
bus info: pci@0000:00:1f.0
version: 10
width: 32 bits
clock: 33MHz
capabilities: isa bus_master
configuration: latency=0
*-pnp00:00
product: PnP device PNP0c02
physical id: 0
capabilities: pnp
configuration: driver=system
*-pnp00:01
product: PnP device PNP0501
physical id: 1
capabilities: pnp
configuration: driver=serial
*-pnp00:02
product: PnP device PNP0c02
physical id: 2
capabilities: pnp
configuration: driver=system
*-pnp00:03
product: PnP device PNP0b00
physical id: 3
capabilities: pnp
configuration: driver=rtc_cmos
*-pnp00:04
product: PnP device INT3f0d
vendor: Interphase Corporation
physical id: 4
capabilities: pnp
configuration: driver=system
*-pnp00:05
product: PnP device PNP0c02
physical id: 5
capabilities: pnp
configuration: driver=system
*-pnp00:06
product: PnP device PNP0c02
physical id: 6
capabilities: pnp
configuration: driver=system
*-pnp00:07
product: PnP device PNP0c02
physical id: 7
capabilities: pnp
configuration: driver=system
*-pnp00:08
product: PnP device PNP0c02
physical id: 8
capabilities: pnp
configuration: driver=system
*-multimedia
description: Audio device
product: Cannon Lake PCH cAVS
vendor: Intel Corporation
physical id: 1f.3
bus info: pci@0000:00:1f.3
logical name: card0
logical name: /dev/snd/controlC0
logical name: /dev/snd/hwC0D0
logical name: /dev/snd/hwC0D2
logical name: /dev/snd/pcmC0D0c
logical name: /dev/snd/pcmC0D0p
logical name: /dev/snd/pcmC0D3p
logical name: /dev/snd/pcmC0D7p
logical name: /dev/snd/pcmC0D8p
version: 10
width: 64 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list
configuration: driver=snd_hda_intel latency=32
resources: irq:126 memory:a1210000-a1213fff memory:a1000000-a10fffff
*-input:0
product: HDA Intel PCH Front Mic
physical id: 0
logical name: input10
logical name: /dev/input/event10
*-input:1
product: HDA Intel PCH Line Out
physical id: 1
logical name: input11
logical name: /dev/input/event11
*-input:2
product: HDA Intel PCH Front Headphone
physical id: 2
logical name: input12
logical name: /dev/input/event12
*-input:3
product: HDA Intel PCH HDMI/DP,pcm=3
physical id: 3
logical name: input13
logical name: /dev/input/event13
*-input:4
product: HDA Intel PCH HDMI/DP,pcm=7
physical id: 4
logical name: input14
logical name: /dev/input/event14
*-input:5
product: HDA Intel PCH HDMI/DP,pcm=8
physical id: 5
logical name: input15
logical name: /dev/input/event15
*-input:6
product: HDA Intel PCH Mic
physical id: 6
logical name: input9
logical name: /dev/input/event9
*-serial:2
description: SMBus
product: Cannon Lake PCH SMBus Controller
vendor: Intel Corporation
physical id: 1f.4
bus info: pci@0000:00:1f.4
version: 10
width: 64 bits
clock: 33MHz
configuration: driver=i801_smbus latency=0
resources: irq:16 memory:a1218000-a12180ff ioport:efa0(size=32)
*-serial:3
description: Serial bus controller
product: Cannon Lake PCH SPI Controller
vendor: Intel Corporation
physical id: 1f.5
bus info: pci@0000:00:1f.5
version: 10
width: 32 bits
clock: 33MHz
configuration: driver=intel-spi latency=0
resources: irq:0 memory:fe010000-fe010fff
*-power UNCLAIMED
description: To Be Filled By O.E.M.
product: To Be Filled By O.E.M.
vendor: To Be Filled By O.E.M.
physical id: 1
version: To Be Filled By O.E.M.
serial: To Be Filled By O.E.M.
capacity: 32768mWh
*-input:0
product: Sleep Button
physical id: 2
logical name: input0
logical name: /dev/input/event0
capabilities: platform
*-input:1
product: Power Button
physical id: 3
logical name: input1
logical name: /dev/input/event1
capabilities: platform
*-input:2
product: Power Button
physical id: 4
logical name: input2
logical name: /dev/input/event2
capabilities: platform
*-input:3
product: Video Bus
physical id: 5
logical name: input7
logical name: /dev/input/event7
capabilities: platform
*-input:4
product: PC Speaker
physical id: 6
logical name: input8
logical name: /dev/input/event8
capabilities: isa

Attachment: config-6.1.0-rc3.gz
Description: application/gzip

Next message: Anirudh Rayabharam: "Re: [PATCH v3 2/5] Drivers: hv: Setup synic registers in case of nested root partition"
Previous message: Thorsten Leemhuis: "Re: dpkg fails on sparc64 (was: [PATCH v4 4/7] mm/thp: Carry over dirty bit when thp splits on pmd) #forregzbot"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]