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Message #170473
[Bug 1555997] Re: overlay fs regression: chmod fails with "Operation not permitted" on chowned files
This bug was fixed in the package linux - 4.2.0-35.40
---------------
linux (4.2.0-35.40) wily; urgency=low
[ Brad Figg ]
* Release Tracking Bug
- LP: #1557706
[ Upstream Kernel Changes ]
* Revert "workqueue: make sure delayed work run in local cpu"
- LP: #1556269
* Revert "ALSA: hda - Fix noise on Gigabyte Z170X mobo"
- LP: #1556269
* KVM: VMX: Fix host initiated access to guest MSR_TSC_AUX
- LP: #1552592
* locking/qspinlock: Move __ARCH_SPIN_LOCK_UNLOCKED to qspinlock_types.h
- LP: #1545330
* [media] usbvision fix overflow of interfaces array
- LP: #1556269
* [media] usbvision: fix crash on detecting device with invalid
configuration
- LP: #1556269
* ASN.1: Fix non-match detection failure on data overrun
- LP: #1556269
* iw_cxgb3: Fix incorrectly returning error on success
- LP: #1556269
* EVM: Use crypto_memneq() for digest comparisons
- LP: #1556269
* vmstat: explicitly schedule per-cpu work on the CPU we need it to run
on
- LP: #1556269
* x86/entry/compat: Add missing CLAC to entry_INT80_32
- LP: #1556269
* iio-light: Use a signed return type for ltr501_match_samp_freq()
- LP: #1556269
* iio: add IIO_TRIGGER dependency to STK8BA50
- LP: #1556269
* iio: add HAS_IOMEM dependency to VF610_ADC
- LP: #1556269
* iio: dac: mcp4725: set iio name property in sysfs
- LP: #1556269
* iommu/vt-d: Fix 64-bit accesses to 32-bit DMAR_GSTS_REG
- LP: #1556269
* iio: light: acpi-als: Report data as processed
- LP: #1556269
* iio:adc:ti_am335x_adc Fix buffered mode by identifying as software
buffer.
- LP: #1556269
* ASoC: rt5645: fix the shift bit of IN1 boost
- LP: #1556269
* ARCv2: STAR 9000950267: Handle return from intr to Delay Slot #2
- LP: #1556269
* cgroup: make sure a parent css isn't offlined before its children
- LP: #1556269
* ARM: OMAP2+: Fix wait_dll_lock_timed for rodata
- LP: #1556269
* ARM: OMAP2+: Fix l2dis_3630 for rodata
- LP: #1556269
* ARM: OMAP2+: Fix save_secure_ram_context for rodata
- LP: #1556269
* ARM: OMAP2+: Fix l2_inv_api_params for rodata
- LP: #1556269
* ARM: OMAP2+: Fix ppa_zero_params and ppa_por_params for rodata
- LP: #1556269
* rtlwifi: rtl8821ae: Fix 5G failure when EEPROM is incorrectly encoded
- LP: #1556269
* PCI/AER: Flush workqueue on device remove to avoid use-after-free
- LP: #1556269
* ARM: dts: Fix wl12xx missing clocks that cause hangs
- LP: #1556269
* libata: disable forced PORTS_IMPL for >= AHCI 1.3
- LP: #1556269
* mac80211: Requeue work after scan complete for all VIF types.
- LP: #1556269
* rfkill: fix rfkill_fop_read wait_event usage
- LP: #1556269
* ARM: dts: at91: sama5d4: fix instance id of DBGU
- LP: #1556269
* ARM: dts: at91: sama5d4ek: add phy address and IRQ for macb0
- LP: #1556269
* ARM: dts: at91: sama5d4 xplained: fix phy0 IRQ type
- LP: #1556269
* crypto: shash - Fix has_key setting
- LP: #1556269
* Input: vmmouse - fix absolute device registration
- LP: #1556269
* spi: atmel: fix gpio chip-select in case of non-DT platform
- LP: #1556269
* drm/i915/dp: fall back to 18 bpp when sink capability is unknown
- LP: #1556269
* ALSA: usb-audio: Fix OPPO HA-1 vendor ID
- LP: #1556269
* ALSA: usb-audio: Add native DSD support for PS Audio NuWave DAC
- LP: #1556269
* ALSA: usb-audio: Add quirk for Microsoft LifeCam HD-6000
- LP: #1556269
* target: Fix WRITE_SAME/DISCARD conversion to linux 512b sectors
- LP: #1556269
* crypto: algif_hash - wait for crypto_ahash_init() to complete
- LP: #1556269
* iio: inkern: fix a NULL dereference on error
- LP: #1556269
* iio: pressure: mpl115: fix temperature offset sign
- LP: #1556269
* intel_scu_ipcutil: underflow in scu_reg_access()
- LP: #1556269
* ALSA: seq: Fix race at closing in virmidi driver
- LP: #1556269
* ALSA: rawmidi: Remove kernel WARNING for NULL user-space buffer check
- LP: #1556269
* ALSA: pcm: Fix potential deadlock in OSS emulation
- LP: #1556269
* ALSA: seq: Fix yet another races among ALSA timer accesses
- LP: #1556269
* ALSA: timer: Code cleanup
- LP: #1556269
* ALSA: timer: Fix link corruption due to double start or stop
- LP: #1556269
* libata: fix sff host state machine locking while polling
- LP: #1556269
* MIPS: Fix buffer overflow in syscall_get_arguments()
- LP: #1556269
* cputime: Prevent 32bit overflow in time[val|spec]_to_cputime()
- LP: #1556269
* drm: add helper to check for wc memory support
- LP: #1556269
* drm/radeon: mask out WC from BO on unsupported arches
- LP: #1556269
* drm/amdgpu: mask out WC from BO on unsupported arches
- LP: #1556269
* ASoC: dpcm: fix the BE state on hw_free
- LP: #1556269
* drm/amdgpu: move gmc7 support out of CIK dependency
- LP: #1556269
* drm/amdgpu: iceland use CI based MC IP
- LP: #1556269
* drm/amdgpu: The VI specific EXE bit should only apply to GMC v8.0 above
- LP: #1556269
* drm/amdgpu: pull topaz gmc bits into gmc_v7
- LP: #1556269
* drm/amdgpu: drop topaz support from gmc8 module
- LP: #1556269
* modules: fix modparam async_probe request
- LP: #1556269
* module: wrapper for symbol name.
- LP: #1556269
* ALSA: hda - Add fixup for Mac Mini 7,1 model
- LP: #1556269
* ALSA: rawmidi: Make snd_rawmidi_transmit() race-free
- LP: #1556269
* ALSA: rawmidi: Fix race at copying & updating the position
- LP: #1556269
* ALSA: seq: Fix lockdep warnings due to double mutex locks
- LP: #1556269
* drivers/scsi/sg.c: mark VMA as VM_IO to prevent migration
- LP: #1556269
* radix-tree: fix race in gang lookup
- LP: #1556269
* drivers/hwspinlock: fix race between radix tree insertion and lookup
- LP: #1556269
* btrfs: fix clone / extent-same deadlocks
- LP: #1556269
* Btrfs: fix invalid page accesses in extent_same (dedup) ioctl
- LP: #1556269
* Btrfs: fix page reading in extent_same ioctl leading to csum errors
- LP: #1556269
* usb: xhci: handle both SSIC ports in PME stuck quirk
- LP: #1556269
* usb: xhci: add a quirk bit for ssic port unused
- LP: #1556269
* usb: xhci: set SSIC port unused only if xhci_suspend succeeds
- LP: #1556269
* usb: xhci: apply XHCI_PME_STUCK_QUIRK to Intel Broxton-M platforms
- LP: #1556269
* xhci: Fix list corruption in urb dequeue at host removal
- LP: #1556269
* target: Invoke release_cmd() callback without holding a spinlock
- LP: #1556269
* target: Fix LUN_RESET active I/O handling for ACK_KREF
- LP: #1556269
* target: Fix LUN_RESET active TMR descriptor handling
- LP: #1556269
* target: Fix TAS handling for multi-session se_node_acls
- LP: #1556269
* [media] tda1004x: only update the frontend properties if locked
- LP: #1556269
* ALSA: timer: Fix leftover link at closing
- LP: #1556269
* [media] saa7134-alsa: Only frees registered sound cards
- LP: #1556269
* ARM: nomadik: fix up SD/MMC DT settings
- LP: #1556269
* Btrfs: fix hang on extent buffer lock caused by the inode_paths ioctl
- LP: #1556269
* scsi_dh_rdac: always retry MODE SELECT on command lock violation
- LP: #1556269
* SCSI: Add Marvell Console to VPD blacklist
- LP: #1556269
* drm: fix missing reference counting decrease
- LP: #1556269
* drm: Add drm_fixp_from_fraction and drm_fixp2int_ceil
- LP: #1556269
* drm/dp/mst: Calculate MST PBN with 31.32 fixed point
- LP: #1556269
* drm/dp/mst: Reverse order of MST enable and clearing VC payload table.
- LP: #1556269
* drm/dp/mst: deallocate payload on port destruction
- LP: #1556269
* ALSA: hda - Fix static checker warning in patch_hdmi.c
- LP: #1556269
* target: Fix remote-port TMR ABORT + se_cmd fabric stop
- LP: #1556269
* dump_stack: avoid potential deadlocks
- LP: #1556269
* mm, vmstat: fix wrong WQ sleep when memory reclaim doesn't make any
progress
- LP: #1556269
* ocfs2/dlm: clear refmap bit of recovery lock while doing local recovery
cleanup
- LP: #1556269
* mm: replace vma_lock_anon_vma with anon_vma_lock_read/write
- LP: #1556269
* radix-tree: fix oops after radix_tree_iter_retry
- LP: #1556269
* crypto: user - lock crypto_alg_list on alg dump
- LP: #1556269
* crypto: algif_skcipher - Do not set MAY_BACKLOG on the async path
- LP: #1556269
* crypto: atmel-sha - fix atmel_sha_remove()
- LP: #1556269
* crypto: marvell/cesa - fix test in mv_cesa_dev_dma_init()
- LP: #1556269
* target: Fix race with SCF_SEND_DELAYED_TAS handling
- LP: #1556269
* qla2xxx: Fix stale pointer access.
- LP: #1556269
* serial: omap: Prevent DoS using unprivileged ioctl(TIOCSRS485)
- LP: #1556269
* tty: Add support for PCIe WCH382 2S multi-IO card
- LP: #1556269
* pty: fix possible use after free of tty->driver_data
- LP: #1556269
* pty: make sure super_block is still valid in final /dev/tty close
- LP: #1556269
* ALSA: hda - Fix speaker output from VAIO AiO machines
- LP: #1556269
* klist: fix starting point removed bug in klist iterators
- LP: #1556269
* ALSA: dummy: Implement timer backend switching more safely
- LP: #1556269
* drm/i915/dsi: defend gpio table against out of bounds access
- LP: #1556269
* drm/i915/dsi: don't pass arbitrary data to sideband
- LP: #1556269
* powerpc: Fix dedotify for binutils >= 2.26
- LP: #1556269
* ALSA: timer: Fix wrong instance passed to slave callbacks
- LP: #1556269
* ARM: 8517/1: ICST: avoid arithmetic overflow in icst_hz()
- LP: #1556269
* xen/scsiback: correct frontend counting
- LP: #1556269
* nfs: fix nfs_size_to_loff_t
- LP: #1556269
* ALSA: timer: Fix race between stop and interrupt
- LP: #1556269
* ALSA: hda - Fix bad dereference of jack object
- LP: #1556269
* ALSA: timer: Fix race at concurrent reads
- LP: #1556269
* phy: core: fix wrong err handle for phy_power_on
- LP: #1556269
* phy: twl4030-usb: Relase usb phy on unload
- LP: #1556269
* phy: twl4030-usb: Fix unbalanced pm_runtime_enable on module reload
- LP: #1556269
* drm/i915/skl: Don't skip mst encoders in skl_ddi_pll_select()
- LP: #1556269
* drm/i915: fix error path in intel_setup_gmbus()
- LP: #1556269
* ahci: Intel DNV device IDs SATA
- LP: #1556269
* workqueue: handle NUMA_NO_NODE for unbound pool_workqueue lookup
- LP: #1556269
* drm/amdgpu: fix s4 resume
- LP: #1556269
* drm/amdgpu: remove unnecessary forward declaration
- LP: #1556269
* drm/radeon: hold reference to fences in radeon_sa_bo_new
- LP: #1556269
* drm/amdgpu: fix issue with overlapping userptrs
- LP: #1556269
* cifs: fix erroneous return value
- LP: #1556269
* s390/dasd: prevent incorrect length error under z/VM after PAV changes
- LP: #1556269
* s390/dasd: fix refcount for PAV reassignment
- LP: #1556269
* ARM: 8519/1: ICST: try other dividends than 1
- LP: #1556269
* btrfs: properly set the termination value of ctx->pos in readdir
- LP: #1556269
* irqchip/gic-v3-its: Fix double ICC_EOIR write for LPI in EOImode==1
- LP: #1556269
* scsi: fix soft lockup in scsi_remove_target() on module removal
- LP: #1556269
* ext4: fix potential integer overflow
- LP: #1556269
* ext4: don't read blocks from disk after extents being swapped
- LP: #1556269
* bio: return EINTR if copying to user space got interrupted
- LP: #1556269
* iwlwifi: mvm: don't allow sched scans without matches to be started
- LP: #1556269
* powerpc/eeh: Fix stale cached primary bus
- LP: #1556269
* xen/pciback: Check PF instead of VF for PCI_COMMAND_MEMORY
- LP: #1556269
* xen/pciback: Save the number of MSI-X entries to be copied later.
- LP: #1556269
* xen/pcifront: Fix mysterious crashes when NUMA locality information was
extracted.
- LP: #1556269
* ALSA: seq: Fix leak of pool buffer at concurrent writes
- LP: #1556269
* ALSA: hda - Cancel probe work instead of flush at remove
- LP: #1556269
* dmaengine: dw: disable BLOCK IRQs for non-cyclic xfer
- LP: #1556269
* tracepoints: Do not trace when cpu is offline
- LP: #1556269
* tracing: Fix freak link error caused by branch tracer
- LP: #1556269
* ALSA: seq: Fix double port list deletion
- LP: #1556269
* drm/amdgpu: use post-decrement in error handling
- LP: #1556269
* drm/radeon: use post-decrement in error handling
- LP: #1556269
* drm/qxl: use kmalloc_array to alloc reloc_info in
qxl_process_single_command
- LP: #1556269
* drm: Fix treatment of drm_vblank_offdelay in drm_vblank_on() (v2)
- LP: #1556269
* x86/uaccess/64: Make the __copy_user_nocache() assembly code more
readable
- LP: #1556269
* x86/uaccess/64: Handle the caching of 4-byte nocache copies properly in
__copy_user_nocache()
- LP: #1556269
* usb: dwc3: Fix assignment of EP transfer resources
- LP: #1556269
* powerpc/ioda: Set "read" permission when "write" is set
- LP: #1556269
* NFSv4: Fix a dentry leak on alias use
- LP: #1556269
* x86/mm: Fix vmalloc_fault() to handle large pages properly
- LP: #1556269
* ALSA: pcm: Fix rwsem deadlock for non-atomic PCM stream
- LP: #1556269
* USB: option: add support for SIM7100E
- LP: #1556269
* USB: cp210x: add IDs for GE B650V3 and B850V3 boards
- LP: #1556269
* USB: option: add "4G LTE usb-modem U901"
- LP: #1556269
* mm: fix regression in remap_file_pages() emulation
- LP: #1556269
* ipc: convert invalid scenarios to use WARN_ON
- LP: #1556269
* ipc/shm: handle removed segments gracefully in shm_mmap()
- LP: #1556269
* hwmon: (ads1015) Handle negative conversion values correctly
- LP: #1556269
* ext4: fix bh->b_state corruption
- LP: #1556269
* ext4: fix crashes in dioread_nolock mode
- LP: #1556269
* nfit: fix multi-interface dimm handling, acpi6.1 compatibility
- LP: #1556269
* hwmon: (gpio-fan) Remove un-necessary speed_index lookup for thermal
hook
- LP: #1556269
* kernel/resource.c: fix muxed resource handling in __request_region()
- LP: #1556269
* drivers: android: correct the size of struct binder_uintptr_t for
BC_DEAD_BINDER_DONE
- LP: #1556269
* can: ems_usb: Fix possible tx overflow
- LP: #1556269
* dm: fix dm_rq_target_io leak on faults with .request_fn DM w/ blk-mq
paths
- LP: #1556269
* s390/compat: correct restore of high gprs on signal return
- LP: #1556269
* drm/amdgpu/pm: adjust display configuration after powerstate
- LP: #1556269
* ARM: OMAP2+: Fix onenand initialization to avoid filesystem corruption
- LP: #1556269
* sunrpc/cache: fix off-by-one in qword_get()
- LP: #1556269
* KVM: arm/arm64: vgic: Ensure bitmaps are long enough
- LP: #1556269
* ARCv2: SMP: Emulate IPI to self using software triggered interrupt
- LP: #1556269
* KVM: x86: fix missed hardware breakpoints
- LP: #1556269
* KVM: async_pf: do not warn on page allocation failures
- LP: #1556269
* tracing: Fix showing function event in available_events
- LP: #1556269
* libceph: don't bail early from try_read() when skipping a message
- LP: #1556269
* libceph: use the right footer size when skipping a message
- LP: #1556269
* ALSA: hda - Fixing background noise on Dell Inspiron 3162
- LP: #1549620, #1556269
* KVM: x86: MMU: fix ubsan index-out-of-range warning
- LP: #1556269
* ALSA: hda/realtek - Support Dell headset mode for ALC225
- LP: #1556269
* ALSA: hda - Fixup speaker pass-through control for nid 0x14 on ALC225
- LP: #1549660, #1556269
* ALSA: hda - Fix headset support and noise on HP EliteBook 755 G2
- LP: #1556269
* ALSA: hda - Loop interrupt handling until really cleared
- LP: #1556269
* x86/mpx: Fix off-by-one comparison with nr_registers
- LP: #1556269
* mm: thp: fix SMP race condition between THP page fault and
MADV_DONTNEED
- LP: #1556269
* ocfs2: unlock inode if deleting inode from orphan fails
- LP: #1556269
* hpfs: don't truncate the file when delete fails
- LP: #1556269
* do_last(): don't let a bogus return value from ->open() et.al. to
confuse us
- LP: #1556269
* namei: ->d_inode of a pinned dentry is stable only for positives
- LP: #1556269
* should_follow_link(): validate ->d_seq after having decided to follow
- LP: #1556269
* do_last(): ELOOP failure exit should be done after leaving RCU mode
- LP: #1556269
* af_iucv: Validate socket address length in iucv_sock_bind()
- LP: #1556269
* net: dp83640: Fix tx timestamp overflow handling.
- LP: #1556269
* tcp: fix NULL deref in tcp_v4_send_ack()
- LP: #1556269
* af_unix: fix struct pid memory leak
- LP: #1556269
* pptp: fix illegal memory access caused by multiple bind()s
- LP: #1556269
* sctp: allow setting SCTP_SACK_IMMEDIATELY by the application
- LP: #1556269
* switchdev: Require RTNL mutex to be held when sending FDB notifications
- LP: #1556269
* tcp: beware of alignments in tcp_get_info()
- LP: #1556269
* ipv6: enforce flowi6_oif usage in ip6_dst_lookup_tail()
- LP: #1556269
* ipv6/udp: use sticky pktinfo egress ifindex on connect()
- LP: #1556269
* net/ipv6: add sysctl option accept_ra_min_hop_limit
- LP: #1556269
* ipv6: addrconf: Fix recursive spin lock call
- LP: #1556269
* ipv6: fix a lockdep splat
- LP: #1556269
* unix: correctly track in-flight fds in sending process user_struct
- LP: #1556269
* net:Add sysctl_max_skb_frags
- LP: #1556269
* tg3: Fix for tg3 transmit queue 0 timed out when too many gso_segs
- LP: #1556269
* sctp: translate network order to host order when users get a hmacid
- LP: #1556269
* flow_dissector: Fix unaligned access in __skb_flow_dissector when used
by eth_get_headlen
- LP: #1556269
* net: Copy inner L3 and L4 headers as unaligned on GRE TEB
- LP: #1556269
* bpf: fix branch offset adjustment on backjumps after patching ctx
expansion
- LP: #1556269
* bonding: Fix ARP monitor validation
- LP: #1556269
* ipv4: fix memory leaks in ip_cmsg_send() callers
- LP: #1556269
* af_unix: Guard against other == sk in unix_dgram_sendmsg
- LP: #1556269
* qmi_wwan: add "4G LTE usb-modem U901"
- LP: #1556269
* net/mlx4_en: Count HW buffer overrun only once
- LP: #1556269
* net/mlx4_en: Choose time-stamping shift value according to HW frequency
- LP: #1556269
* net/mlx4_en: Avoid changing dev->features directly in run-time
- LP: #1556269
* l2tp: Fix error creating L2TP tunnels
- LP: #1556269
* pppoe: fix reference counting in PPPoE proxy
- LP: #1556269
* route: check and remove route cache when we get route
- LP: #1556269
* rtnl: RTM_GETNETCONF: fix wrong return value
- LP: #1556269
* unix_diag: fix incorrect sign extension in unix_lookup_by_ino
- LP: #1556269
* sctp: Fix port hash table size computation
- LP: #1556269
* net/mlx4_core: Do not BUG_ON during reset when PCI is offline
- LP: #1556269
* s390/perf_event: fix address range for asynchronous stack
- LP: #1556269
* batman-adv: Avoid endless loop in bat-on-bat netdevice check
- LP: #1556269
* af_unix: Don't set err in unix_stream_read_generic unless there was an
error
- LP: #1556269
* netlink: not trim skb for mmaped socket when dump
- LP: #1556269
* Input: xpad - remove unused function
- LP: #1556269
* ARM: dts: kirkwood: use unique machine name for ds112
- LP: #1556269
* s390/stacktrace: fix address ranges for asynchronous and panic stack
- LP: #1556269
* MAINTAINERS: Remove stale entry for BCM33xx chips
- LP: #1556269
* [media] exynos4-is: fix a format string bug
- LP: #1556269
* net/mlx4_core: Fix potential corruption in counters database
- LP: #1556269
* net: phy: bcm7xxx: Fix shadow mode 2 disabling
- LP: #1556269
* writeback: initialize inode members that track writeback history
- LP: #1556269
* bonding: don't use stale speed and duplex information
- LP: #1556269
* net: phy: bcm7xxx: Fix bcm7xxx_config_init() check
- LP: #1556269
* s390/oprofile: fix address range for asynchronous stack
- LP: #1556269
* net: phy: Fix phy_mac_interrupt()
- LP: #1556269
* net: phy: Avoid polling PHY with PHY_IGNORE_INTERRUPTS
- LP: #1556269
* net: phy: bcm7xxx: Fix 40nm EPHY features
- LP: #1556269
* netfilter: nfnetlink: correctly validate length of batch messages
- LP: #1556269
* pipe: limit the per-user amount of pages allocated in pipes
- LP: #1556269
* Linux 4.2.8-ckt5
- LP: #1556269
* x86/mm: Fix slow_virt_to_phys() for X86_PAE again
- LP: #1549601
* Drivers: hv: vss: run only on supported host versions
- LP: #1496927
* ovl: copy new uid/gid into overlayfs runtime inode
- LP: #1555997
* sched/numa: Fix use-after-free bug in the task_numa_compare
- LP: #1527643
-- Brad Figg <brad.figg@xxxxxxxxxxxxx> Tue, 15 Mar 2016 11:48:50 -0700
** Changed in: linux (Ubuntu Wily)
Status: Fix Committed => Fix Released
--
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https://bugs.launchpad.net/bugs/1555997
Title:
overlay fs regression: chmod fails with "Operation not permitted" on
chowned files
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Wily:
Fix Released
Status in linux source package in Xenial:
Fix Released
Bug description:
This is a regression in Xenial's kernel 4.4.0-9 or 4.4.0-10. See
comment #3 for simple reproducer.
ORIGINAL BUG REPORT
===================
I'm investigating some failures in autopkgtest's testsuite, and stumbled over something really weird: In an ephemeral container it is apparently not possible any more to chmod files that started out being root owned and got chowned later:
$ sudo lxc-start-ephemeral -o adt-wily
(log in as ubuntu/ubuntu)
ubuntu@adt-wily-hvzj1eoa:~$ echo hello | sudo tee /tmp/testfile
[sudo] password for ubuntu:
hello
ubuntu@adt-wily-hvzj1eoa:~$ sudo chown ubuntu:ubuntu /tmp/testfile
ubuntu@adt-wily-hvzj1eoa:~$ chmod +x /tmp/testfile
chmod: changing permissions of ‘/tmp/testfile’: Operation not permitted
However, if the file was *not* previously chowned, it works as
expected:
ubuntu@adt-wily-hvzj1eoa:~$ echo hello > /tmp/testfile2
ubuntu@adt-wily-hvzj1eoa:~$ chmod +x /tmp/testfile2
ubuntu@adt-wily-hvzj1eoa:~$ chmod -x /tmp/testfile2
(no errors and testfile2 becomes executable)
There is no visible permission difference in the files at all, other
than being group-writable (but changing the group w bit in either
direction does not change the error at all):
-rw-r--r-- 1 ubuntu ubuntu 6 Mar 11 10:26 /tmp/testfile
-rw-rw-r-- 1 ubuntu ubuntu 6 Mar 11 10:26 /tmp/testfile2
ubuntu@adt-wily-hvzj1eoa:~$ stat /tmp/testfile*
File: ‘/tmp/testfile’
Size: 6 Blocks: 8 IO Block: 4096 regular file
Device: 15h/21d Inode: 28 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 1000/ ubuntu) Gid: ( 1000/ ubuntu)
Access: 2016-03-11 10:26:19.574364117 +0100
Modify: 2016-03-11 10:26:19.574364117 +0100
Change: 2016-03-11 10:26:21.930343210 +0100
Birth: -
File: ‘/tmp/testfile2’
Size: 6 Blocks: 8 IO Block: 4096 regular file
Device: 15h/21d Inode: 29 Links: 1
Access: (0664/-rw-rw-r--) Uid: ( 1000/ ubuntu) Gid: ( 1000/ ubuntu)
Access: 2016-03-11 10:26:58.730145919 +0100
Modify: 2016-03-11 10:26:58.730145919 +0100
Change: 2016-03-11 10:27:44.530203985 +0100
Birth: -
There are also no ACLs involved (I checked with getfacl).
This does not happen with a normal lxc-start, so this might very well
be a bug in Linux' overlayfs. However, it also does not happen with
the more modern "sudo lxc-copy -n adt-wily --ephemeral --foreground"
-- bug perhaps this isn't using overlayfs?
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: lxc 2.0.0~rc9-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-11.26-generic 4.4.4
Uname: Linux 4.4.0-11-generic x86_64
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
CurrentDesktop: i3
Date: Fri Mar 11 10:21:20 2016
EcryptfsInUse: Yes
PackageArchitecture: all
SourcePackage: lxc
UpgradeStatus: No upgrade log present (probably fresh install)
defaults.conf:
lxc.network.type = veth
lxc.network.link = lxcbr0
lxc.network.flags = up
lxc.network.hwaddr = 00:16:3e:xx:xx:xx
dnsmasq.conf:
enable-tftp
tftp-root=/tmp/tftp
dhcp-boot=pxelinux.0
lxc.conf: lxc.lxcpath = /srv/lxc
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