[Filesystems-devel] Bug#884008: Bug#884008: aufs-dkms: aufs triggers kernel WARN during boot
Ralf Jung
post at ralfj.de
Wed Dec 13 20:55:09 UTC 2017
Hi,
> Please provide me these necessary info.
>
> (from aufs README file)
Oh wow, that's a long list...
> ----------------------------------------------------------------------
> When you have any problems or strange behaviour in aufs, please let me
> know with:
> - /proc/mounts (instead of the output of mount(8))
> sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
> proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0
> udev /dev devtmpfs rw,nosuid,relatime,size=3042000k,nr_inodes=760500,mode=755 0 0
> devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
> tmpfs /run tmpfs rw,nosuid,noexec,relatime,size=610948k,mode=755 0 0
> /dev/xvda1 / ext4 rw,relatime,errors=remount-ro,data=ordered 0 0
> securityfs /sys/kernel/security securityfs rw,nosuid,nodev,noexec,relatime 0 0
> tmpfs /dev/shm tmpfs rw,nosuid,nodev 0 0
> tmpfs /run/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=5120k 0 0
> tmpfs /sys/fs/cgroup tmpfs ro,nosuid,nodev,noexec,mode=755 0 0
> cgroup /sys/fs/cgroup/systemd cgroup rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd 0 0
> pstore /sys/fs/pstore pstore rw,nosuid,nodev,noexec,relatime 0 0
> cgroup /sys/fs/cgroup/net_cls,net_prio cgroup rw,nosuid,nodev,noexec,relatime,net_cls,net_prio 0 0
> cgroup /sys/fs/cgroup/cpuset cgroup rw,nosuid,nodev,noexec,relatime,cpuset 0 0
> cgroup /sys/fs/cgroup/blkio cgroup rw,nosuid,nodev,noexec,relatime,blkio 0 0
> cgroup /sys/fs/cgroup/devices cgroup rw,nosuid,nodev,noexec,relatime,devices 0 0
> cgroup /sys/fs/cgroup/memory cgroup rw,nosuid,nodev,noexec,relatime,memory 0 0
> cgroup /sys/fs/cgroup/cpu,cpuacct cgroup rw,nosuid,nodev,noexec,relatime,cpu,cpuacct 0 0
> cgroup /sys/fs/cgroup/perf_event cgroup rw,nosuid,nodev,noexec,relatime,perf_event 0 0
> cgroup /sys/fs/cgroup/freezer cgroup rw,nosuid,nodev,noexec,relatime,freezer 0 0
> cgroup /sys/fs/cgroup/pids cgroup rw,nosuid,nodev,noexec,relatime,pids 0 0
> systemd-1 /proc/sys/fs/binfmt_misc autofs rw,relatime,fd=28,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=9285 0 0
> mqueue /dev/mqueue mqueue rw,relatime 0 0
> hugetlbfs /dev/hugepages hugetlbfs rw,relatime 0 0
> debugfs /sys/kernel/debug debugfs rw,relatime 0 0
> tmpfs /run/user/117 tmpfs rw,nosuid,nodev,relatime,size=610944k,mode=700,uid=117,gid=65534 0 0
> tmpfs /run/user/998 tmpfs rw,nosuid,nodev,relatime,size=610944k,mode=700,uid=998,gid=998 0 0
> none /proc/xen xenfs rw,relatime 0 0
> /dev/xvda1 /var/lib/schroot/mount/schsh-sphinxlog-81099fc9-d177-4e9f-b483-bf0768c05944 ext4 ro,nosuid,noexec,relatime,errors=remount-ro,data=ordered 0 0
> /dev/xvda1 /var/lib/schroot/mount/schsh-sphinxlog-81099fc9-d177-4e9f-b483-bf0768c05944/lib ext4 ro,nosuid,nodev,relatime,errors=remount-ro,data=ordered 0 0
> /dev/xvda1 /var/lib/schroot/mount/schsh-sphinxlog-81099fc9-d177-4e9f-b483-bf0768c05944/lib64 ext4 ro,nosuid,nodev,relatime,errors=remount-ro,data=ordered 0 0
> /dev/xvda1 /var/lib/schroot/mount/schsh-sphinxlog-81099fc9-d177-4e9f-b483-bf0768c05944/usr/bin ext4 ro,nosuid,nodev,relatime,errors=remount-ro,data=ordered 0 0
> /dev/xvda1 /var/lib/schroot/mount/schsh-sphinxlog-81099fc9-d177-4e9f-b483-bf0768c05944/usr/lib ext4 ro,nosuid,nodev,relatime,errors=remount-ro,data=ordered 0 0
> /dev/xvda1 /var/lib/schroot/mount/schsh-sphinxlog-81099fc9-d177-4e9f-b483-bf0768c05944/usr/share ext4 ro,nosuid,nodev,relatime,errors=remount-ro,data=ordered 0 0
> /dev/xvda1 /var/lib/schroot/mount/schsh-sphinxlog-81099fc9-d177-4e9f-b483-bf0768c05944/usr/local/bin ext4 ro,nosuid,nodev,relatime,errors=remount-ro,data=ordered 0 0
> /dev/xvda1 /var/lib/schroot/mount/schsh-sphinxlog-81099fc9-d177-4e9f-b483-bf0768c05944/data ext4 rw,nosuid,nodev,noexec,relatime,errors=remount-ro,data=ordered 0 0
> /dev/xvda1 /var/lib/docker/aufs ext4 rw,relatime,errors=remount-ro,data=ordered 0 0
> none /var/lib/docker/aufs/mnt/df2e8ee3c0467263a3739bc31dcbe8b20020b4cf63420fe678e4dcd9980d01ce aufs rw,relatime,si=9c8729566d35b73d,dio,dirperm1 0 0
> shm /var/lib/docker/containers/2b0cb0d4354c7058a6f75bde599522221666d11cee783d52b5b1ebdb486f1869/shm tmpfs rw,nosuid,nodev,noexec,relatime,size=65536k 0 0
> nsfs /run/docker/netns/55b873a60b7d nsfs rw 0 0
> binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,relatime 0 0
> tmpfs /run/user/1001 tmpfs rw,nosuid,nodev,relatime,size=610944k,mode=700,uid=1001,gid=1001 0 0
> - /sys/module/aufs/*
> $ for f in $(find /sys/module/aufs/ -type f); do echo $f && sudo cat $f; done
> /sys/module/aufs/version
> 4.9-20161219
> /sys/module/aufs/notes/.note.gnu.build-id
> [binary garbage]
> /sys/module/aufs/taint
> O
> /sys/module/aufs/initsize
> 0
> /sys/module/aufs/initstate
> live
> /sys/module/aufs/srcversion
> EAC7876AD444CD8E2C103D2
> /sys/module/aufs/coresize
> 360448
> /sys/module/aufs/refcnt
> 314
> /sys/module/aufs/sections/.data..read_mostly
> 0xffffffffc06849c0
> /sys/module/aufs/sections/.fixup
> 0xffffffffc066e81a
> /sys/module/aufs/sections/.altinstr_replacement
> 0xffffffffc066e808
> /sys/module/aufs/sections/.altinstructions
> 0xffffffffc067d88c
> /sys/module/aufs/sections/.note.gnu.build-id
> 0xffffffffc066f000
> /sys/module/aufs/sections/.exit.text
> 0xffffffffc066e7d7
> /sys/module/aufs/sections/__mcount_loc
> 0xffffffffc067c118
> /sys/module/aufs/sections/.init.text
> 0xffffffffc0693000
> /sys/module/aufs/sections/.data.unlikely
> 0xffffffffc06849c1
> /sys/module/aufs/sections/.gnu.linkonce.this_module
> 0xffffffffc0684a00
> /sys/module/aufs/sections/__jump_table
> 0xffffffffc067ec80
> /sys/module/aufs/sections/.parainstructions
> 0xffffffffc067d510
> /sys/module/aufs/sections/.strtab
> 0xffffffffc069d258
> /sys/module/aufs/sections/.bss
> 0xffffffffc0684d40
> /sys/module/aufs/sections/.rodata.str1.1
> 0xffffffffc067acea
> /sys/module/aufs/sections/__bug_table
> 0xffffffffc067767e
> /sys/module/aufs/sections/__verbose
> 0xffffffffc0680600
> /sys/module/aufs/sections/.rodata.str1.8
> 0xffffffffc0671080
> /sys/module/aufs/sections/.text
> 0xffffffffc063a000
> /sys/module/aufs/sections/__param
> 0xffffffffc067c0a0
> /sys/module/aufs/sections/.data
> 0xffffffffc067e000
> /sys/module/aufs/sections/.symtab
> 0xffffffffc0694000
> /sys/module/aufs/sections/.text.unlikely
> 0xffffffffc066e707
> /sys/module/aufs/sections/.rodata
> 0xffffffffc066f040
> /sys/module/aufs/sections/__ex_table
> 0xffffffffc067d8dc
> /sys/module/aufs/sections/.smp_locks
> 0xffffffffc067d138
> /sys/module/aufs/parameters/brs
> 1
> /sys/module/aufs/parameters/allow_userns
> N
> /sys/module/aufs/parameters/debug
> 0
> /sys/module/aufs/uevent
> cat: /sys/module/aufs/uevent: Permission denied
> - /sys/fs/aufs/* (if you have them)
> $ for f in $(find /sys/fs/aufs/ -type f); do echo $f && sudo cat $f; done
> /sys/fs/aufs/config
> CONFIG_AUFS_FS=m
> CONFIG_AUFS_BRANCH_MAX_127=y
> CONFIG_AUFS_SBILIST=y
> CONFIG_AUFS_DEBUG=y
> /sys/fs/aufs/si_9c8729566d35b73d/br5
> /var/lib/docker/aufs/diff/be63a972a469b680fba05ccb86ccb935830b1c33be505e0b16469606cf5e41b3=ro+wh
> /sys/fs/aufs/si_9c8729566d35b73d/brid8
> 72
> /sys/fs/aufs/si_9c8729566d35b73d/br3
> /var/lib/docker/aufs/diff/9a4dfbc724cf3926321d5ad9fcb8ac8f4bdba6ab0ea74c5070bb6c095a09140c=ro+wh
> /sys/fs/aufs/si_9c8729566d35b73d/brid6
> 70
> /sys/fs/aufs/si_9c8729566d35b73d/br1
> /var/lib/docker/aufs/diff/df2e8ee3c0467263a3739bc31dcbe8b20020b4cf63420fe678e4dcd9980d01ce-init=ro+wh
> /sys/fs/aufs/si_9c8729566d35b73d/brid4
> 68
> /sys/fs/aufs/si_9c8729566d35b73d/xi_path
> /dev/shm/aufs.xino
> /sys/fs/aufs/si_9c8729566d35b73d/brid2
> 66
> /sys/fs/aufs/si_9c8729566d35b73d/br8
> /var/lib/docker/aufs/diff/dc6ae6705f3c232a8d671dfb7dbd3581c79f8be2b911b294259f5512e569c5da=ro+wh
> /sys/fs/aufs/si_9c8729566d35b73d/brid0
> 64
> /sys/fs/aufs/si_9c8729566d35b73d/br6
> /var/lib/docker/aufs/diff/785483eaad232f565484f366c27bb68389d2b01040a7602225f357604ef1d2ca=ro+wh
> /sys/fs/aufs/si_9c8729566d35b73d/br4
> /var/lib/docker/aufs/diff/a51b188962db0a66cc12b459a3b1ffbe8aa398a99fe5a831bebe401a75ab9c9f=ro+wh
> /sys/fs/aufs/si_9c8729566d35b73d/brid7
> 71
> /sys/fs/aufs/si_9c8729566d35b73d/br2
> /var/lib/docker/aufs/diff/7f18a357c56aad63ab9fbc484dae1ea3faea497d8afbf73bd5873dfd7face8e0=ro+wh
> /sys/fs/aufs/si_9c8729566d35b73d/brid5
> 69
> /sys/fs/aufs/si_9c8729566d35b73d/br0
> /var/lib/docker/aufs/diff/df2e8ee3c0467263a3739bc31dcbe8b20020b4cf63420fe678e4dcd9980d01ce=rw
> /sys/fs/aufs/si_9c8729566d35b73d/brid3
> 67
> /sys/fs/aufs/si_9c8729566d35b73d/brid1
> 65
> /sys/fs/aufs/si_9c8729566d35b73d/br7
> /var/lib/docker/aufs/diff/7a172045a697fec3a77fa53f4559a142a900101d5b33a4299e133ecdc02fea36=ro+wh
> - /debug/aufs/* (if you have them)
I don't.
> - linux kernel version
> if your kernel is not plain, for example modified by distributor,
> the url where i can download its source is necessary too.
Linux core.hacksaar.de 4.9.0-4-amd64 #1 SMP Debian 4.9.65-3 (2017-12-03)
x86_64 GNU/Linux
The source download is at the bottom of
<https://packages.debian.org/source/stable/linux>
> - aufs version which was printed at loading the module or booting the
> system, instead of the date you downloaded.
> Dez 10 12:10:24 core.hacksaar.de kernel: aufs: loading out-of-tree module taints kernel.
> Dez 10 12:10:24 core.hacksaar.de kernel: aufs 4.9-20161219
> - configuration (define/undefine CONFIG_AUFS_xxx)
I asume that's this?
>> /sys/fs/aufs/config
>> CONFIG_AUFS_FS=m
>> CONFIG_AUFS_BRANCH_MAX_127=y
>> CONFIG_AUFS_SBILIST=y
>> CONFIG_AUFS_DEBUG=y
> - kernel configuration or /proc/config.gz (if you have it)
> - behaviour which you think to be incorrect
> - actual operation, reproducible one is better
Quoting from the original mail:
> we have aufs installed on our server to be able to run docker. During boot, I
> see the following arror a couple dozen times:
>
> S Sun Dec 10 12:10:27 2017 p4 kernel: aufs au_opts_verify:1607:dockerd[1339]: dirperm1 breaks the protection by the permission bits on the lower branch
> S Sun Dec 10 12:10:27 2017 p4 kernel: ------------[ cut here ]------------
> S Sun Dec 10 12:10:27 2017 p4 kernel: WARNING: CPU: 0 PID: 1490 at /var/lib/dkms/aufs/4.9+20161219/build/fs/aufs/cpup.c:423 au_cp_regular+0x16c/0x250 [aufs]
> S Sun Dec 10 12:10:27 2017 p4 kernel: .wh..wh.setup_maker_elements-i.ri.0007
> Please report this warning to aufs-users ML
> S Sun Dec 10 12:10:27 2017 p4 kernel: Modules linked in:
> S Sun Dec 10 12:10:27 2017 p4 kernel: aufs(O) xenfs xen_privcmd joydev hid_generic usbhid hid ppdev sg pcspkr parport_pc parport serio_raw evdev ip_tables x_tables autofs4 ext4 crc16 jbd2 crc32c_generic fscrypto ecb glue_helper lrw gf128mul ablk_helper cryptd aes_x86_64 mbcache sr_mod cdrom ata_generic xen_netfront xen_blkfront crc32c_intel ata_piix psmouse cirrus ttm drm_kms_helper drm i2c_piix4 uhci_hcd ehci_hcd usbcore usb_common libata scsi_mod floppy button
> S Sun Dec 10 12:10:27 2017 p4 kernel: CPU: 0 PID: 1490 Comm: auplink Tainted: G O 4.9.0-4-amd64 #1 Debian 4.9.65-3
> S Sun Dec 10 12:10:27 2017 p4 kernel: Hardware name: Xen HVM domU, BIOS 4.4.1-xs116341 01/13/2016
> S Sun Dec 10 12:10:27 2017 p4 kernel: 0000000000000000 ffffffffa8928e84 ffffbba581ee7a60 0000000000000000
> S Sun Dec 10 12:10:27 2017 p4 kernel: ffffffffa8675efe ffffbba581ee7d58 ffffbba581ee7ab8 0000000000000000
> S Sun Dec 10 12:10:27 2017 p4 kernel: ffff9512c3ab3800 ffff9512c50e2d00 ffff95128a6ec780 ffffffffa8675f7f
> S Sun Dec 10 12:10:27 2017 p4 kernel: Call Trace:
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffa8928e84>] ? dump_stack+0x5c/0x78
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffa8675efe>] ? __warn+0xbe/0xe0
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffa8675f7f>] ? warn_slowpath_fmt+0x5f/0x80
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffc064aaec>] ? au_cp_regular+0x16c/0x250 [aufs]
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffc064abc1>] ? au_cp_regular+0x241/0x250 [aufs]
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffc064ab37>] ? au_cp_regular+0x1b7/0x250 [aufs]
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffc064b30c>] ? cpup_entry+0x73c/0x890 [aufs]
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffc0648674>] ? vfsub_lookup_one_len+0x44/0xf0 [aufs]
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffa8935546>] ? sprintf+0x56/0x70
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffc064b5e7>] ? au_cpup_single.constprop.23+0x187/0x760 [aufs]
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffa881a658>] ? dput+0x38/0x250
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffc064bfeb>] ? au_cpup_simple+0x5b/0xa0 [aufs]
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffc064c0ff>] ? au_do_sio_cpup_simple+0xcf/0xf0 [aufs]
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffc06609d3>] ? au_pin_and_icpup+0x2a3/0x4e0 [aufs]
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffc06610f4>] ? aufs_setattr+0x4e4/0x620 [aufs]
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffa88285b2>] ? xattr_resolve_name+0xa2/0xc0
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffa882063f>] ? notify_change+0x2ef/0x460
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffa87ff0f5>] ? chown_common+0x165/0x1c0
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffa8957138>] ? strncpy_from_user+0x48/0x160
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffa8800274>] ? SyS_chown+0x94/0xd0
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffa8c075fb>] ? system_call_fast_compare_end+0xc/0x9b
> S Sun Dec 10 12:10:27 2017 p4 kernel: ---[ end trace fc137d6061ab0b9c ]---
> S Sun Dec 10 12:10:27 2017 p4 kernel: ------------[ cut here ]------------
> S Sun Dec 10 12:10:27 2017 p4 kernel: WARNING: CPU: 0 PID: 1490 at /var/lib/dkms/aufs/4.9+20161219/build/fs/aufs/cpup.c:423 au_cp_regular+0x16c/0x250 [aufs]
> S Sun Dec 10 12:10:27 2017 p4 kernel: .wh..wh.resources-i.ri.000b
> Please report this warning to aufs-users ML
> S Sun Dec 10 12:10:27 2017 p4 kernel: Modules linked in:
> S Sun Dec 10 12:10:27 2017 p4 kernel: aufs(O) xenfs xen_privcmd joydev hid_generic usbhid hid ppdev sg pcspkr parport_pc parport serio_raw evdev ip_tables x_tables autofs4 ext4 crc16 jbd2 crc32c_generic fscrypto ecb glue_helper lrw gf128mul ablk_helper cryptd aes_x86_64 mbcache sr_mod cdrom ata_generic xen_netfront xen_blkfront crc32c_intel ata_piix psmouse cirrus ttm drm_kms_helper drm i2c_piix4 uhci_hcd ehci_hcd usbcore usb_common libata scsi_mod floppy button
> S Sun Dec 10 12:10:27 2017 p4 kernel: CPU: 0 PID: 1490 Comm: auplink Tainted: G W O 4.9.0-4-amd64 #1 Debian 4.9.65-3
> S Sun Dec 10 12:10:27 2017 p4 kernel: Hardware name: Xen HVM domU, BIOS 4.4.1-xs116341 01/13/2016
> S Sun Dec 10 12:10:27 2017 p4 kernel: 0000000000000000 ffffffffa8928e84 ffffbba581ee7a60 0000000000000000
> S Sun Dec 10 12:10:27 2017 p4 kernel: ffffffffa8675efe ffffbba581ee7d58 ffffbba581ee7ab8 0000000000000000
> S Sun Dec 10 12:10:27 2017 p4 kernel: ffff9512c3ab3800 ffff95128a932000 ffff951289d38300 ffffffffa8675f7f
> S Sun Dec 10 12:10:27 2017 p4 kernel: Call Trace:
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffa8928e84>] ? dump_stack+0x5c/0x78
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffa8675efe>] ? __warn+0xbe/0xe0
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffa8675f7f>] ? warn_slowpath_fmt+0x5f/0x80
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffc064aaec>] ? au_cp_regular+0x16c/0x250 [aufs]
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffc064abc1>] ? au_cp_regular+0x241/0x250 [aufs]
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffc064ab37>] ? au_cp_regular+0x1b7/0x250 [aufs]
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffc064b30c>] ? cpup_entry+0x73c/0x890 [aufs]
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffc0648674>] ? vfsub_lookup_one_len+0x44/0xf0 [aufs]
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffa8935546>] ? sprintf+0x56/0x70
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffc064b5e7>] ? au_cpup_single.constprop.23+0x187/0x760 [aufs]
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffa881a658>] ? dput+0x38/0x250
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffc064bfeb>] ? au_cpup_simple+0x5b/0xa0 [aufs]
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffc064c0ff>] ? au_do_sio_cpup_simple+0xcf/0xf0 [aufs]
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffc06609d3>] ? au_pin_and_icpup+0x2a3/0x4e0 [aufs]
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffc06610f4>] ? aufs_setattr+0x4e4/0x620 [aufs]
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffa88285b2>] ? xattr_resolve_name+0xa2/0xc0
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffa882063f>] ? notify_change+0x2ef/0x460
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffa87ff0f5>] ? chown_common+0x165/0x1c0
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffa8957138>] ? strncpy_from_user+0x48/0x160
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffa8800274>] ? SyS_chown+0x94/0xd0
> S Sun Dec 10 12:10:27 2017 p4 kernel: [<ffffffffa8c075fb>] ? system_call_fast_compare_end+0xc/0x9b
> S Sun Dec 10 12:10:27 2017 p4 kernel: ---[ end trace fc137d6061ab0b9d ]---
> S Sun Dec 10 12:10:27 2017 p4 kernel: ------------[ cut here ]------------
>
> The errors stop eventually after 10s, and then docker seems to work fine.
>
> This is with the following kernel:
>
> Linux core.hacksaar.de 4.9.0-4-amd64 #1 SMP Debian 4.9.65-3 (2017-12-03) x86_64 GNU/Linux
>
> I just did an `apt upgrade`, which installed a new kernel. I have not seen this
> error before, but it is possible that I missed it.
Kind regards,
Ralf
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