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[Launchpad Bug Tracker <1485528@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 3.19.0-31.36

---------------
linux (3.19.0-31.36) vivid; urgency=low

  [ Luis Henriques ]

  * Release Tracking Bug
    - LP: #1503703

  [ Andy Whitcroft ]

  * Revert "SAUCE: aufs3: mmap: Fix races in madvise_remove() and
    sys_msync()"
    - LP: #1503655

  [ Ben Hutchings ]

  * SAUCE: aufs3: mmap: Fix races in madvise_remove() and sys_msync()
    - LP: #1503655
    - CVE-2015-7312

linux (3.19.0-31.35) vivid; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
    - LP: #1503005

  [ Ben Hutchings ]

  * SAUCE: aufs3: mmap: Fix races in madvise_remove() and sys_msync()
    - CVE-2015-7312

  [ Craig Magina ]

  * [Config] Add XGENE_EDAC, EDAC_SUPPORT and EDAC_ATOMIC_SCRUB
    - LP: #1494357

  [ John Johansen ]

  * SAUCE: (no-up) apparmor: fix mount not handling disconnected paths
    - LP: #1496430

  [ Laurent Dufour ]

  * SAUCE: powerpc/hvsi: Fix endianness issues in the HVSI driver
    - LP: #1499357

  [ Tim Gardner ]

  * [Config] CONFIG_RTC_DRV_XGENE=y for only arm64
    - LP: #1499869

  [ Upstream Kernel Changes ]

  * Revert "sit: Add gro callbacks to sit_offload"
    - LP: #1500493
  * ipmi/powernv: Fix minor locking bug
    - LP: #1493017
  * mmc: sdhci-pci: set the clear transfer mode register quirk for O2Micro
    - LP: #1472843
  * perf probe ppc: Fix symbol fixup issues due to ELF type
    - LP: #1485528
  * perf probe ppc: Use the right prefix when ignoring SyS symbols on ppc
    - LP: #1485528
  * perf probe ppc: Enable matching against dot symbols automatically
    - LP: #1485528
  * perf probe ppc64le: Fix ppc64 ABIv2 symbol decoding
    - LP: #1485528
  * perf probe ppc64le: Prefer symbol table lookup over DWARF
    - LP: #1485528
  * perf probe ppc64le: Fixup function entry if using kallsyms lookup
    - LP: #1485528
  * perf probe: Improve detection of file/function name in the probe
    pattern
    - LP: #1485528
  * perf probe: Ignore tail calls to probed functions
    - LP: #1485528
  * seccomp: cap SECCOMP_RET_ERRNO data to MAX_ERRNO
    - LP: #1496073
  * EDAC: Cleanup atomic_scrub mess
    - LP: #1494357
  * arm64: Enable EDAC on ARM64
    - LP: #1494357
  * MAINTAINERS: Add entry for APM X-Gene SoC EDAC driver
    - LP: #1494357
  * Documentation: Add documentation for the APM X-Gene SoC EDAC DTS
    binding
    - LP: #1494357
  * EDAC: Add APM X-Gene SoC EDAC driver
    - LP: #1494357
  * arm64: Add APM X-Gene SoC EDAC DTS entries
    - LP: #1494357
  * EDAC, edac_stub: Drop arch-specific include
    - LP: #1494357
  * NVMe: Fix blk-mq hot cpu notification
    - LP: #1498778
  * blk-mq: Shared tag enhancements
    - LP: #1498778
  * blk-mq: avoid access hctx->tags->cpumask before allocation
    - LP: #1498778
  * x86/ldt: Make modify_ldt synchronous
    - LP: #1500493
  * x86/ldt: Correct LDT access in single stepping logic
    - LP: #1500493
  * x86/ldt: Correct FPU emulation access to LDT
    - LP: #1500493
  * md: flush ->event_work before stopping array.
    - LP: #1500493
  * ipv6: addrconf: validate new MTU before applying it
    - LP: #1500493
  * virtio-net: drop NETIF_F_FRAGLIST
    - LP: #1500493
  * RDS: verify the underlying transport exists before creating a
    connection
    - LP: #1500493
  * xen/gntdev: convert priv->lock to a mutex
    - LP: #1500493
  * xen/gntdevt: Fix race condition in gntdev_release()
    - LP: #1500493
  * PCI: Restore PCI_MSIX_FLAGS_BIRMASK definition
    - LP: #1500493
  * USB: qcserial/option: make AT URCs work for Sierra Wireless
    MC7305/MC7355
    - LP: #1500493
  * USB: qcserial: Add support for Dell Wireless 5809e 4G Modem
    - LP: #1500493
  * nfsd: Drop BUG_ON and ignore SECLABEL on absent filesystem
    - LP: #1500493
  * usb: chipidea: ehci_init_driver is intended to call one time
    - LP: #1500493
  * crypto: qat - Fix invalid synchronization between register/unregister
    sym algs
    - LP: #1500493
  * crypto: ixp4xx - Remove bogus BUG_ON on scattered dst buffer
    - LP: #1500493
  * mfd: arizona: Fix initialisation of the PM runtime
    - LP: #1500493
  * xen-blkfront: don't add indirect pages to list when !feature_persistent
    - LP: #1500493
  * xen-blkback: replace work_pending with work_busy in
    purge_persistent_gnt()
    - LP: #1500493
  * usb: gadget: f_uac2: fix calculation of uac2->p_interval
    - LP: #1500493
  * hwrng: core - correct error check of kthread_run call
    - LP: #1500493
  * USB: sierra: add 1199:68AB device ID
    - LP: #1500493
  * regmap: regcache-rbtree: Clean new present bits on present bitmap
    resize
    - LP: #1500493
  * target/iscsi: Fix double free of a TUR followed by a solicited NOPOUT
    - LP: #1500493
  * rbd: fix copyup completion race
    - LP: #1500493
  * md/raid1: extend spinlock to protect raid1_end_read_request against
    inconsistencies
    - LP: #1500493
  * target: REPORT LUNS should return LUN 0 even for dynamic ACLs
    - LP: #1500493
  * MIPS: Fix sched_getaffinity with MT FPAFF enabled
    - LP: #1500493
  * MIPS: Malta: Don't reinitialise RTC
    - LP: #1500493
  * MIPS: do_mcheck: Fix kernel code dump with EVA
    - LP: #1500493
  * MIPS: show_stack: Fix stack trace with EVA
    - LP: #1500493
  * MIPS: Export get_c0_perfcount_int()
    - LP: #1500493
  * rtlwifi: rtl8723be: Add module parameter for MSI interrupts
    - LP: #1500493
  * MIPS: Flush RPS on kernel entry with EVA
    - LP: #1500493
  * usb: udc: core: add device_del() call to error pathway
    - LP: #1500493
  * xhci: fix off by one error in TRB DMA address boundary check
    - LP: #1500493
  * drivers/usb: Delete XHCI command timer if necessary
    - LP: #1500493
  * staging: vt6655: vnt_bss_info_changed check conf->beacon_rate is not
    NULL
    - LP: #1500493
  * dm: fix dm_merge_bvec regression on 32 bit systems
    - LP: #1500493
  * perf: Fix fasync handling on inherited events
    - LP: #1500493
  * drm/dp-mst: Remove debug WARN_ON
    - LP: #1500493
  * ALSA: fireworks/firewire-lib: add support for recent firmware quirk
    - LP: #1500493
  * mm, vmscan: Do not wait for page writeback for GFP_NOFS allocations
    - LP: #1500493
  * MIPS: Make set_pte() SMP safe.
    - LP: #1500493
  * ipc: modify message queue accounting to not take kernel data structures
    into account
    - LP: #1500493
  * ocfs2: fix BUG in ocfs2_downconvert_thread_do_work()
    - LP: #1500493
  * fsnotify: fix oops in fsnotify_clear_marks_by_group_flags()
    - LP: #1500493
  * KVM: x86: Use adjustment in guest cycles when handling
    MSR_IA32_TSC_ADJUST
    - LP: #1500493
  * x86/xen: build "Xen PV" APIC driver for domU as well
    - LP: #1500493
  * cpuset: use trialcs->mems_allowed as a temp variable
    - LP: #1500493
  * drm/dp/mst: Remove port after removing connector.
    - LP: #1500493
  * localmodconfig: Use Kbuild files too
    - LP: #1500493
  * dm thin metadata: delete btrees when releasing metadata snapshot
    - LP: #1500493
  * dm btree: add ref counting ops for the leaves of top level btrees
    - LP: #1500493
  * drm/radeon: add new OLAND pci id
    - LP: #1500493
  * libiscsi: Fix host busy blocking during connection teardown
    - LP: #1500493
  * libfc: Fix fc_exch_recv_req() error path
    - LP: #1500493
  * libfc: Fix fc_fcp_cleanup_each_cmd()
    - LP: #1500493
  * sd: Fix maximum I/O size for BLOCK_PC requests
    - LP: #1500493
  * EDAC, ppc4xx: Access mci->csrows array elements properly
    - LP: #1500493
  * crypto: caam - fix memory corruption in ahash_final_ctx
    - LP: #1500493
  * drm/vmwgfx: Fix execbuf locking issues
    - LP: #1500493
  * mm/hwpoison: fix page refcount of unknown non LRU page
    - LP: #1500493
  * ipc,sem: fix use after free on IPC_RMID after a task using same
    semaphore set exits
    - LP: #1500493
  * ipc/sem.c: update/correct memory barriers
    - LP: #1500493
  * MIPS: Fix seccomp syscall argument for MIPS64
    - LP: #1500493
  * x86/ldt: Further fix FPU emulation
    - LP: #1500493
  * drm/i915: Flag the execlists context object as dirty after every use
    - LP: #1500493
  * fnic: Use the local variable instead of I/O flag to acquire io_req_lock
    in fnic_queuecommand() to avoid deadloack
    - LP: #1500493
  * SCSI: Fix NULL pointer dereference in runtime PM
    - LP: #1500493
  * ALSA: usb-audio: Fix runtime PM unbalance
    - LP: #1500493
  * x86/xen: make CONFIG_XEN depend on CONFIG_X86_LOCAL_APIC
    - LP: #1500493
  * Input: gpio_keys_polled - request GPIO pin as input.
    - LP: #1500493
  * PCI: Don't use 64-bit bus addresses on PA-RISC
    - LP: #1500493
  * ALSA: usb: Add native DSD support for Gustard DAC-X20U
    - LP: #1500493
  * Add factory recertified Crucial M500s to blacklist
    - LP: #1500493
  * arm64: KVM: Fix host crash when injecting a fault into a 32bit guest
    - LP: #1500493
  * batman-adv: protect tt_local_entry from concurrent delete events
    - LP: #1500493
  * ip6_gre: release cached dst on tunnel removal
    - LP: #1500493
  * perf: Fix PERF_EVENT_IOC_PERIOD migration race
    - LP: #1500493
  * net: Fix RCU splat in af_key
    - LP: #1500493
  * bna: fix interrupts storm caused by erroneous packets
    - LP: #1500493
  * rds: fix an integer overflow test in rds_info_getsockopt()
    - LP: #1500493
  * fq_codel: explicitly reset flows in ->reset()
    - LP: #1500493
  * bridge: netlink: account for the IFLA_BRPORT_PROXYARP attribute size
    and policy
    - LP: #1500493
  * batman-adv: fix kernel crash due to missing NULL checks
    - LP: #1500493
  * fbdev: select versatile helpers for the integrator
    - LP: #1500493
  * rocker: free netdevice during netdevice removal
    - LP: #1500493
  * udp: fix dst races with multicast early demux
    - LP: #1500493
  * net: phy: add locking to
    phy_read_mmd_indirect()/phy_write_mmd_indirect()
    - LP: #1500493
  * sparc64: Fix userspace FPU register corruptions.
    - LP: #1500493
  * rtnetlink: verify IFLA_VF_INFO attributes before passing them to driver
    - LP: #1500493
  * net/tipc: initialize security state for new connection socket
    - LP: #1500493
  * net: pktgen: fix race between pktgen_thread_worker() and kthread_stop()
    - LP: #1500493
  * net: Fix skb csum races when peeking
    - LP: #1500493
  * ipv6: lock socket in ip6_datagram_connect()
    - LP: #1500493
  * bonding: correct the MAC address for "follow" fail_over_mac policy
    - LP: #1500493
  * netlink: don't hold mutex in rcu callback when releasing mmapd ring
    - LP: #1500493
  * ext4: fix loss of delalloc extent info in ext4_zero_range()
    - LP: #1500493
  * ACPI, PCI: Penalize legacy IRQ used by ACPI SCI
    - LP: #1500493
  * Linux 3.19.8-ckt7
    - LP: #1500493

 -- Luis Henriques <luis.henriques@xxxxxxxxxxxxx>  Wed, 07 Oct 2015
14:23:22 +0100

** Changed in: linux (Ubuntu Vivid)
       Status: Fix Committed => Fix Released

** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2015-7312

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https://bugs.launchpad.net/bugs/1485528

Title:
  perf probe: ppc64le/ABIv2 support

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Vivid:
  Fix Released
Status in linux source package in Wily:
  Fix Released

Bug description:
  Problem Description
  ========================
  perf probe does not work properly on ppc64le

  ---uname output---
  Linux ubuntu1504 3.19.0-22-generic #22-Ubuntu SMP Tue Jun 16 17:15:17 UTC 2015 ppc64le ppc64le ppc64le GNU/Linux
   
  Machine Type = POWER 

  Steps to Reproduce
  ========================
   'perf probe do_fork' adds the probe, but is not able to capture events on 'perf record -e probe:do_fork -a'. This is because ppc64le ABIv2 uses local entry points at an offset from the global entry point where the probe is currently being placed.

  These issues have been fixed upstream with the below patch series:
  - http://thread.gmane.org/gmane.linux.kernel/1939488
  - http://thread.gmane.org/gmane.linux.kernel/1941352

  == Comment: #1 - Naveen N. Rao <naveen.n.rao@xxxxxxxxxx> - 2015-07-01 07:03:19 ==
  I have backported the patches relevant for ppc64le and I am attaching them here. These fixes are needed for 15.04, 14.04.03 and 15.10 (depending on the kernel it gets based on). For reference, upstream commits in -tip for reference:
  - d4c537e6bf860c12262cb936eef663180d7a3d45: perf probe: Ignore tail calls to probed functions
  - 3099c026002e97b8c173d9d0bbdfc39257d14402: perf probe: Improve detection of file/function name in the probe pattern
  - 7b6ff0bdbf4f7f429c2116cca92a6d171217449e: perf probe ppc64le: Fixup function entry if using kallsyms lookup
  - d5c2e2c17ae1d630ddbceb53a264f24cc99703a4: perf probe ppc64le: Prefer symbol table lookup over DWARF
  - c50fc0a43e33a6c3257c5cbb954cd747d7b9a680: perf probe ppc64le: Fix ppc64 ABIv2 symbol decoding
  - 031b84c407c3153ffbcb4f8f832edf48af988719: perf probe ppc: Enable matching against dot symbols automatically
  - fb6d59423115b10125f5db6acb8471f6f0af4ad7: perf probe ppc: Use the right prefix when ignoring SyS symbols on ppc
  - d2332098331fffe9358b50cebc8954ecd6560448: perf probe ppc: Fix symbol fixup issues due to ELF type

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