SRU Justification
Impact:
The upstream process for stable tree updates is quite similar
in scope to the Ubuntu SRU process, e.g., each patch has to
demonstrably fix a bug, and each patch is vetted by upstream
by originating either directly from a mainline/stable Linux tree or
a minimally backported form of that patch. The following upstream
stable patches should be included in the Ubuntu kernel:
4.4.179 upstream stable release
from git://git.kernel.org/
The following patches were applied:
* arm64: debug: Don't propagate UNKNOWN FAR into si_code for debug signals
* arm64: debug: Ensure debug handlers check triggering exception level
* ext4: cleanup bh release code in ext4_ind_remove_space()
* lib/int_sqrt: optimize initial value compute
* tty/serial: atmel: Add is_half_duplex helper
* mm: mempolicy: make mbind() return -EIO when MPOL_MF_STRICT is specified
* i2c: core-smbus: prevent stack corruption on read I2C_BLOCK_DATA
* Bluetooth: Fix decrementing reference count twice in releasing socket
* tty/serial: atmel: RS485 HD w/DMA: enable RX after TX is stopped
* CIFS: fix POSIX lock leak and invalid ptr deref
* h8300: use cc-cross-prefix instead of hardcoding h8300-unknown-linux-
* tracing: kdb: Fix ftdump to not sleep
* gpio: gpio-omap: fix level interrupt idling
* sysctl: handle overflow for file-max
* enic: fix build warning without CONFIG_CPUMASK_OFFSTACK
* mm/cma.c: cma_declare_contiguous: correct err handling
* mm/page_ext.c: fix an imbalance with kmemleak
* mm/vmalloc.c: fix kernel BUG at mm/vmalloc.c:512!
* mm/slab.c: kmemleak no scan alien caches
* ocfs2: fix a panic problem caused by o2cb_ctl
* f2fs: do not use mutex lock in atomic context
* fs/file.c: initialize init_files.resize_wait
* cifs: use correct format characters
* dm thin: add sanity checks to thin-pool and external snapshot creation
* cifs: Fix NULL pointer dereference of devname
* fs: fix guard_bio_eod to check for real EOD errors
* tools lib traceevent: Fix buffer overflow in arg_eval
* usb: chipidea: Grab the (legacy) USB PHY by phandle first
* scsi: core: replace GFP_ATOMIC with GFP_KERNEL in scsi_scan.c
* coresight: etm4x: Add support to enable ETMv4.2
* ARM: 8840/1: use a raw_spinlock_t in unwind
* mmc: omap: fix the maximum timeout setting
* e1000e: Fix -Wformat-truncation warnings
* IB/mlx4: Increase the timeout for CM cache
* scsi: megaraid_sas: return error when create DMA pool failed
* perf test: Fix failure of 'evsel-tp-sched' test on s390
* SoC: imx-sgtl5000: add missing put_device()
* media: sh_veu: Correct return type for mem2mem buffer helpers
* media: s5p-jpeg: Correct return type for mem2mem buffer helpers
* media: s5p-g2d: Correct return type for mem2mem buffer helpers
* media: mx2_emmaprp: Correct return type for mem2mem buffer helpers
* leds: lp55xx: fix null deref on firmware load failure
* kprobes: Prohibit probing on bsearch()
* ARM: 8833/1: Ensure that NEON code always compiles with Clang
* ALSA: PCM: check if ops are defined before suspending PCM
* bcache: fix input overflow to cache set sysfs file io_error_halflife
* bcache: fix input overflow to sequential_cutoff
* bcache: improve sysfs_strtoul_clamp()
* fbdev: fbmem: fix memory access if logo is bigger than the screen
* cdrom: Fix race condition in cdrom_sysctl_register
* ASoC: fsl-asoc-card: fix object reference leaks in fsl_asoc_card_probe
* soc: qcom: gsbi: Fix error handling in gsbi_probe()
* mt7601u: bump supported EEPROM version
* ARM: avoid Cortex-A9 livelock on tight dmb loops
* tty: increase the default flip buffer limit to 2*640K
* media: mt9m111: set initial frame size other than 0x0
* hwrng: virtio - Avoid repeated init of completion
* soc/tegra: fuse: Fix illegal free of IO base address
* hpet: Fix missing '=' character in the __setup() code of hpet_mmap_enable
* dmaengine: imx-dma: fix warning comparison of distinct pointer types
* netfilter: physdev: relax br_netfilter dependency
* media: s5p-jpeg: Check for fmt_ver_flag when doing fmt enumeration
* regulator: act8865: Fix act8600_sudcdc_voltage_ranges setting
* wlcore: Fix memory leak in case wl12xx_fetch_firmware failure
* x86/build: Mark per-CPU symbols as absolute explicitly for LLD
* dmaengine: tegra: avoid overflow of byte tracking
* drm/dp/mst: Configure no_stop_bit correctly for remote i2c xfers
* binfmt_elf: switch to new creds when switching to new mm
* kbuild: clang: choose GCC_TOOLCHAIN_DIR not on LD
* x86/build: Specify elf_i386 linker emulation explicitly for i386 objects
* x86: vdso: Use $LD instead of $CC to link
* x86/vdso: Drop implicit common-page-size linker flag
* lib/string.c: implement a basic bcmp
* tty: mark Siemens R3964 line discipline as BROKEN
* tty: ldisc: add sysctl to prevent autoloading of ldiscs
* ipv6: Fix dangling pointer when ipv6 fragment
* ipv6: sit: reset ip header pointer in ipip6_rcv
* net: rds: force to destroy connection if t_sock is NULL in rds_tcp_kill_sock().
* qmi_wwan: add Olicard 600
* sctp: initialize _pad of sockaddr_in before copying to user memory
* tcp: Ensure DCTCP reacts to losses
* netns: provide pure entropy for net_hash_mix()
* net: ethtool: not call vzalloc for zero sized memory request
* ip6_tunnel: Match to ARPHRD_TUNNEL6 for dev type
* ALSA: seq: Fix OOB-reads from strlcpy
* include/linux/bitrev.h: fix constant bitrev
* ASoC: fsl_esai: fix channel swap issue when stream starts
* block: do not leak memory in bio_copy_user_iov()
* genirq: Respect IRQCHIP_SKIP_SET_WAKE in irq_chip_set_wake_parent()
* ARM: dts: at91: Fix typo in ISC_D0 on PC9
* arm64: futex: Fix FUTEX_WAKE_OP atomic ops with non-zero result value
* xen: Prevent buffer overflow in privcmd ioctl
* sched/fair: Do not re-read ->h_load_next during hierarchical load calculation
* xtensa: fix return_address
* PCI: Add function 1 DMA alias quirk for Marvell 9170 SATA controller
* perf/core: Restore mmap record type correctly
* ext4: add missing brelse() in add_new_gdb_meta_bg()
* ext4: report real fs size after failed resize
* ALSA: echoaudio: add a check for ioremap_nocache
* ALSA: sb8: add a check for request_region
* IB/mlx4: Fix race condition between catas error reset and aliasguid flows
* mmc: davinci: remove extraneous __init annotation
* ALSA: opl3: fix mismatch between snd_opl3_drum_switch definition and declaration
* thermal/int340x_thermal: Add additional UUIDs
* thermal/int340x_thermal: fix mode setting
* tools/power turbostat: return the exit status of a command
* perf top: Fix error handling in cmd_top()
* perf evsel: Free evsel->counts in perf_evsel__exit()
* perf tests: Fix a memory leak of cpu_map object in the openat_syscall_event_on_all_cpus test
* perf tests: Fix a memory leak in test__perf_evsel__tp_sched_test()
* x86/hpet: Prevent potential NULL pointer dereference
* x86/cpu/cyrix: Use correct macros for Cyrix calls on Geode processors
* iommu/vt-d: Check capability before disabling protected memory
* x86/hw_breakpoints: Make default case in hw_breakpoint_arch_parse() return an error
* fix incorrect error code mapping for OBJECTID_NOT_FOUND
* ext4: prohibit fstrim in norecovery mode
* rsi: improve kernel thread handling to fix kernel panic
* 9p: do not trust pdu content for stat item size
* 9p locks: add mount option for lock retry interval
* f2fs: fix to do sanity check with current segment number
* serial: uartps: console_setup() can't be placed to init section
* ARM: samsung: Limit SAMSUNG_PM_CHECK config option to non-Exynos platforms
* ACPI / SBS: Fix GPE storm on recent MacBookPro's
* cifs: fallback to older infolevels on findfirst queryinfo retry
* crypto: sha256/arm - fix crash bug in Thumb2 build
* crypto: sha512/arm - fix crash bug in Thumb2 build
* iommu/dmar: Fix buffer overflow during PCI bus notification
* ARM: 8839/1: kprobe: make patch_lock a raw_spinlock_t
* appletalk: Fix use-after-free in atalk_proc_exit
* lib/div64.c: off by one in shift
* include/linux/swap.h: use offsetof() instead of custom __swapoffset macro
* tpm/tpm_crb: Avoid unaligned reads in crb_recv()
* ovl: fix uid/gid when creating over whiteout
* appletalk: Fix compile regression
* bonding: fix event handling for stacked bonds
* net: atm: Fix potential Spectre v1 vulnerabilities
* net: bridge: multicast: use rcu to access port list from br_multicast_start_querier
* net: fou: do not use guehdr after iptunnel_pull_offloads in gue_udp_recv
* tcp: tcp_grow_window() needs to respect tcp_space()
* ipv4: recompile ip options in ipv4_link_failure
* ipv4: ensure rcu_read_lock() in ipv4_link_failure()
* crypto: crypto4xx - properly set IV after de- and encrypt
* modpost: file2alias: go back to simple devtable lookup
* modpost: file2alias: check prototype of handler
* tpm/tpm_i2c_atmel: Return -E2BIG when the transfer is incomplete
* KVM: x86: Don't clear EFER during SMM transitions for 32-bit vCPU
* iio/gyro/bmg160: Use millidegrees for temperature scale
* iio: ad_sigma_delta: select channel when reading register
* iio: adc: at91: disable adc channel interrupt in timeout case
* io: accel: kxcjk1013: restore the range after resume.
* staging: comedi: vmk80xx: Fix use of uninitialized semaphore
* staging: comedi: vmk80xx: Fix possible double-free of ->usb_rx_buf
* staging: comedi: ni_usb6501: Fix use of uninitialized mutex
* staging: comedi: ni_usb6501: Fix possible double-free of ->usb_rx_buf
* ALSA: core: Fix card races between register and disconnect
* crypto: x86/poly1305 - fix overflow during partial reduction
* arm64: futex: Restore oldval initialization to work around buggy compilers
* x86/kprobes: Verify stack frame on kretprobe
* kprobes: Mark ftrace mcount handler functions nokprobe
* kprobes: Fix error check when reusing optimized probes
* mac80211: do not call driver wake_tx_queue op during reconfig
* Revert "kbuild: use -Oz instead of -Os when using clang"
* sched/fair: Limit sched_cfs_period_timer() loop to avoid hard lockup
* device_cgroup: fix RCU imbalance in error case
* mm/vmstat.c: fix /proc/vmstat format for CONFIG_DEBUG_TLBFLUSH=y CONFIG_SMP=n
* ALSA: info: Fix racy addition/deletion of nodes
* Revert "locking/lockdep: Add debug_locks check in __lock_downgrade()"
* kernel/sysctl.c: fix out-of-bounds access when setting file-max
* Linux 4.4.179
The following patch has been skipped as it has already been applied:
f28cd2af22a0c13