I'm announcing the release of the 3.18.111 kernel. All users of the 3.18 kernel series must upgrade. The updated 3.18.y git tree can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-3.18.y and can be browsed at the normal kernel.org git web browser: http://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=summary thanks, greg k-h ------------ Documentation/device-mapper/thin-provisioning.txt | 8 Makefile | 2 arch/alpha/include/asm/xchg.h | 30 ++- arch/arm/boot/dts/socfpga.dtsi | 2 arch/arm/mach-omap1/clock.c | 6 arch/arm/mach-omap2/pm.c | 4 arch/arm/plat-omap/dmtimer.c | 7 arch/m68k/coldfire/device.c | 12 + arch/mips/include/asm/mach-ath79/ar71xx_regs.h | 2 arch/mips/kernel/ptrace.c | 22 +- arch/mips/kernel/ptrace32.c | 4 arch/mips/kvm/mips.c | 2 arch/mips/txx9/rbtx4939/setup.c | 4 arch/powerpc/include/asm/irq_work.h | 1 arch/powerpc/perf/core-book3s.c | 25 ++ arch/powerpc/sysdev/mpic.c | 2 arch/sh/kernel/entry-common.S | 2 arch/sparc/include/asm/atomic_64.h | 6 arch/x86/kernel/smpboot.c | 1 arch/x86/kvm/vmx.c | 20 +- arch/x86/kvm/x86.c | 7 arch/x86/power/hibernate_32.c | 2 arch/x86/power/hibernate_64.c | 2 drivers/acpi/acpi_pad.c | 3 drivers/acpi/acpica/evevent.c | 9 drivers/acpi/acpica/nseval.c | 8 drivers/acpi/processor_perflib.c | 2 drivers/ata/libata-core.c | 4 drivers/block/paride/pcd.c | 2 drivers/cdrom/cdrom.c | 3 drivers/cdrom/gdrom.c | 3 drivers/clk/samsung/clk-exynos3250.c | 4 drivers/clk/samsung/clk-exynos5250.c | 8 drivers/clk/samsung/clk-exynos5260.c | 2 drivers/clk/samsung/clk-s3c2410.c | 16 - drivers/clocksource/fsl_ftm_timer.c | 2 drivers/dma/pl330.c | 6 drivers/firewire/ohci.c | 8 drivers/firmware/dmi_scan.c | 22 -- drivers/gpu/drm/exynos/regs-fimc.h | 2 drivers/hid/hid-roccat-kovaplus.c | 2 drivers/hwmon/nct6775.c | 10 - drivers/hwmon/pmbus/adm1275.c | 4 drivers/hwmon/pmbus/max8688.c | 2 drivers/i2c/busses/i2c-mv64xxx.c | 8 drivers/ide/ide-cd.c | 2 drivers/infiniband/hw/mlx5/qp.c | 5 drivers/infiniband/ulp/ipoib/ipoib_main.c | 3 drivers/irqchip/irq-gic-v3.c | 2 drivers/md/bcache/alloc.c | 4 drivers/md/bcache/bcache.h | 2 drivers/md/bcache/btree.c | 9 drivers/md/bcache/request.c | 2 drivers/md/bcache/super.c | 23 +- drivers/md/bcache/sysfs.c | 11 - drivers/md/bcache/writeback.c | 27 ++ drivers/md/raid1.c | 11 + drivers/md/raid10.c | 6 drivers/media/dvb-core/dmxdev.c | 2 drivers/media/pci/cx23885/cx23885-cards.c | 4 drivers/media/pci/cx23885/cx23885-core.c | 10 + drivers/media/pci/cx25821/cx25821-core.c | 7 drivers/media/platform/s3c-camif/camif-capture.c | 7 drivers/media/usb/em28xx/em28xx.h | 2 drivers/message/fusion/mptctl.c | 2 drivers/net/ethernet/intel/e1000e/ich8lan.c | 2 drivers/net/ethernet/intel/e1000e/mac.c | 2 drivers/net/ethernet/intel/e1000e/netdev.c | 4 drivers/net/ethernet/marvell/mvneta.c | 1 drivers/net/ethernet/mellanox/mlx5/core/cmd.c | 2 drivers/net/phy/dp83640.c | 18 + drivers/net/usb/qmi_wwan.c | 4 drivers/net/usb/r8152.c | 2 drivers/net/usb/smsc75xx.c | 7 drivers/net/virtio_net.c | 2 drivers/net/wireless/ath/ath10k/mac.c | 10 + drivers/parisc/lba_pci.c | 20 +- drivers/pci/pci-driver.c | 17 + drivers/pci/quirks.c | 5 drivers/regulator/of_regulator.c | 1 drivers/rtc/rtc-tx4939.c | 6 drivers/s390/cio/device_fsm.c | 7 drivers/s390/cio/io_sch.h | 1 drivers/scsi/aacraid/commsup.c | 4 drivers/scsi/aacraid/linit.c | 5 drivers/scsi/arm/fas216.c | 2 drivers/scsi/bnx2fc/bnx2fc_io.c | 1 drivers/scsi/lpfc/lpfc_attr.c | 5 drivers/scsi/lpfc/lpfc_hbadisc.c | 5 drivers/scsi/lpfc/lpfc_sli.c | 2 drivers/scsi/qla2xxx/qla_isr.c | 6 drivers/scsi/qla4xxx/ql4_def.h | 2 drivers/scsi/qla4xxx/ql4_os.c | 46 ++++ drivers/scsi/sd.c | 3 drivers/scsi/sr.c | 21 +- drivers/scsi/sym53c8xx_2/sym_hipd.c | 2 drivers/scsi/ufs/ufshcd.c | 2 drivers/staging/rtl8192u/r8192U_core.c | 2 drivers/tty/serial/arc_uart.c | 5 drivers/tty/serial/fsl_lpuart.c | 4 drivers/tty/serial/imx.c | 6 drivers/tty/serial/samsung.c | 4 drivers/tty/serial/xilinx_uartps.c | 2 drivers/usb/dwc2/core.h | 2 drivers/usb/dwc3/core.h | 2 drivers/usb/gadget/composite.c | 40 +--- drivers/usb/gadget/function/f_fs.c | 2 drivers/usb/gadget/function/f_uac2.c | 2 drivers/usb/gadget/udc/fsl_udc_core.c | 4 drivers/usb/gadget/udc/goku_udc.h | 2 drivers/usb/host/ohci-hcd.c | 3 drivers/usb/host/xhci-mem.c | 2 drivers/usb/musb/musb_core.c | 2 drivers/video/fbdev/sbuslib.c | 4 drivers/watchdog/f71808e_wdt.c | 3 drivers/watchdog/sp5100_tco.h | 2 drivers/xen/events/events_base.c | 4 drivers/xen/grant-table.c | 4 drivers/xen/swiotlb-xen.c | 2 drivers/xen/xen-acpi-processor.c | 6 drivers/xen/xenbus/xenbus_probe.c | 5 drivers/zorro/zorro.c | 12 + fs/affs/namei.c | 10 - fs/aio.c | 4 fs/btrfs/ctree.c | 12 - fs/btrfs/disk-io.c | 2 fs/btrfs/extent-tree.c | 1 fs/btrfs/inode.c | 16 - fs/btrfs/send.c | 3 fs/btrfs/tests/qgroup-tests.c | 2 fs/btrfs/tree-log.c | 12 - fs/cifs/cifssmb.c | 4 fs/dcache.c | 22 ++ fs/ecryptfs/inode.c | 3 fs/ext2/namei.c | 6 fs/ext4/namei.c | 6 fs/f2fs/namei.c | 12 - fs/jffs2/dir.c | 12 - fs/jffs2/fs.c | 1 fs/jfs/namei.c | 12 - fs/nfs/nfs4sysctl.c | 2 fs/nilfs2/namei.c | 6 fs/ocfs2/acl.c | 6 fs/ocfs2/super.c | 5 fs/ocfs2/xattr.c | 2 fs/proc/base.c | 29 ++ fs/proc/proc_sysctl.c | 3 fs/reiserfs/namei.c | 12 - fs/udf/namei.c | 6 fs/udf/super.c | 5 fs/ufs/namei.c | 6 fs/xfs/xfs_discard.c | 14 - include/asm-generic/pgtable.h | 15 + include/linux/dcache.h | 1 include/linux/suspend.h | 2 include/linux/usb/composite.h | 3 include/net/llc_conn.h | 2 include/net/mac80211.h | 2 include/net/regulatory.h | 2 include/trace/events/timer.h | 20 +- include/uapi/linux/if_ether.h | 1 kernel/audit.c | 2 kernel/debug/kdb/kdb_main.c | 27 ++ kernel/events/core.c | 3 kernel/power/power.h | 3 kernel/relay.c | 2 kernel/sched/rt.c | 2 kernel/signal.c | 4 mm/ksm.c | 28 ++ mm/mempolicy.c | 36 +++ mm/swapfile.c | 4 mm/vmscan.c | 22 +- net/batman-adv/distributed-arp-table.c | 2 net/batman-adv/fragmentation.c | 3 net/batman-adv/gateway_client.c | 3 net/batman-adv/multicast.c | 4 net/batman-adv/soft-interface.c | 8 net/bridge/netfilter/ebtables.c | 33 ++- net/core/skbuff.c | 9 net/ipv4/ip_vti.c | 2 net/ipv4/tcp_illinois.c | 2 net/ipv6/sit.c | 7 net/llc/llc_c_ac.c | 15 - net/llc/llc_conn.c | 32 ++- net/netlabel/netlabel_unlabeled.c | 10 + net/nfc/llcp_commands.c | 4 net/nfc/netlink.c | 3 scripts/kconfig/expr.c | 2 scripts/kconfig/menu.c | 1 scripts/kconfig/zconf.y | 33 ++- security/integrity/ima/ima_crypto.c | 2 security/integrity/ima/ima_main.c | 13 + sound/core/vmaster.c | 5 sound/soc/au1x/ac97c.c | 6 tools/lib/traceevent/parse-filter.c | 10 - tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_string.tc | 46 ++++ tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_syntax.tc | 97 ++++++++++ tools/testing/selftests/ftrace/test.d/kprobe/probepoint.tc | 43 ++++ tools/testing/selftests/memfd/config | 1 tools/thermal/tmon/sysfs.c | 12 - tools/thermal/tmon/tmon.c | 1 201 files changed, 1218 insertions(+), 395 deletions(-) Al Viro (3): affs_lookup(): close a race with affs_remove_link() aio: fix io_destroy(2) vs. lookup_ioctx() race do d_instantiate/unlock_new_inode combinations safely Alex Estrin (1): IB/ipoib: Fix for potential no-carrier state Alex Williamson (1): PCI: Add function 1 DMA alias quirk for Marvell 9128 Alexey Dobriyan (1): proc: fix /proc/*/map_files lookup Anders Roxell (1): selftests: memfd: add config fragment for fuse Andrea Parri (2): locking/xchg/alpha: Add unconditional memory barrier to cmpxchg() locking/xchg/alpha: Fix xchg() and cmpxchg() memory ordering bugs Andrzej Hajda (4): clk: samsung: s3c2410: Fix PLL rates clk: samsung: exynos5260: Fix PLL rates clk: samsung: exynos5250: Fix PLL rates clk: samsung: exynos3250: Fix PLL rates Anna-Maria Gleixner (1): tracing/hrtimer: Fix tracing bugs by taking all clock bases and modes into account Arnd Bergmann (4): scsi: fas216: fix sense buffer initialization x86/power: Fix swsusp_arch_resume prototype cifs: silence compiler warnings showing up with gcc-8.0.0 media: s3c-camif: fix out-of-bounds array access Arvind Yadav (1): xen: xenbus: use put_device() instead of kfree() Bart Van Assche (1): scsi: qla2xxx: Avoid triggering undefined behavior in qla2x00_mbx_completion() Benjamin Poirier (1): e1000e: Fix check_for_link return value with autoneg off Brad Love (3): media: cx23885: Override 888 ImpactVCBe crystal frequency media: cx23885: Set subdev host data to clk_freq pointer media: em28xx: USB bulk packet size fix Carlos Maiolino (1): Force log to disk before reading the AGF during a fstrim Chad Dupuis (1): scsi: bnx2fc: Fix check in SCSI completion handler for timed out request Chen Yu (1): ACPI: processor_perflib: Do not send _PPC change notification if not ready Chris Dickens (1): usb: gadget: composite: fix incorrect handling of OS desc requests Christophe JAILLET (1): regulator: of: Add a missing 'of_node_put()' in an error handling path of 'of_regulator_match()' Claudio Imbrenda (1): mm/ksm: fix interaction with THP Colin Ian King (5): KVM: Fix spelling mistake: "cop_unsuable" -> "cop_unusable" clocksource/drivers/fsl_ftm_timer: Fix error return checking staging: rtl8192u: return -ENOMEM on failed allocation of priv->oldaddr rtc: tx4939: avoid unintended sign extension on a 24 bit shift media: cx25821: prevent out-of-bounds read on array card Coly Li (2): bcache: properly set task state in bch_writeback_thread() bcache: quit dc->writeback_thread when BCACHE_DEV_DETACHING is set Cong Wang (1): llc: properly handle dev_queue_xmit() return value Dan Carpenter (5): ASoC: au1x: Fix timeout tests in au1xac97c_ac97_read() HID: roccat: prevent an out of bounds read in kovaplus_profile_activated() scsi: sym53c8xx_2: iterator underflow in sym_getsync() scsi: mptfusion: Add bounds check in mptctl_hp_targetinfo() xen/acpi: off by one in read_acpi_id() Danilo Krummrich (1): fs/proc/proc_sysctl.c: fix potential page fault while unregistering sysctl table Dave Carroll (1): scsi: aacraid: Insure command thread is not recursively stopped David Rientjes (1): kernel/relay.c: limit kmalloc size to KMALLOC_MAX_SIZE David S. Miller (1): sparc64: Make atomic_xchg() an inline function rather than a macro. Davidlohr Bueso (1): sched/rt: Fix rq->clock_update_flags < RQCF_ACT_SKIP warning Eric Dumazet (2): smsc75xx: fix smsc75xx_set_features() r8152: fix tx packets accounting Erik Schmauss (1): ACPICA: Events: add a return on failure from acpi_hw_register_read Esben Haabendal (1): dp83640: Ensure against premature access to PHY registers after reset Felix Fietkau (1): mac80211: round IEEE80211_TX_STATUS_HEADROOM up to multiple of 4 Filipe Manana (2): Btrfs: send, fix issuing write op when processing hole in no data mode Btrfs: fix copy_items() return value when logging an inode Florian Westphal (2): netfilter: ebtables: convert BUG_ONs to WARN_ONs netfilter: ebtables: fix erroneous reject of last rule Frank Asseg (1): tools/thermal: tmon: fix for segfault Fredrik Noring (1): USB: OHCI: Fix NULL dereference in HCDs using HCD_LOCAL_MEM Geert Uytterhoeven (6): ARM: OMAP1: clock: Fix debugfs_create_*() usage serial: xuartps: Fix out-of-bounds access through DT alias serial: samsung: Fix out-of-bounds access through serial port index serial: imx: Fix out-of-bounds access through serial port index serial: fsl_lpuart: Fix out-of-bounds access through DT alias serial: arc_uart: Fix out-of-bounds access through DT alias Giuseppe Lippolis (1): net-usb: add qmi_wwan if on lte modem wistron neweb d18q1 Greg Kroah-Hartman (1): Linux 3.18.111 Greg Ungerer (1): m68k: set dma and coherent masks for platform FEC ethernets Gregory CLEMENT (1): i2c: mv64xxx: Apply errata delay only in standard mode Grigor Tovmasyan (1): usb: dwc2: Fix interval type issue Guenter Roeck (4): watchdog: sp5100_tco: Fix watchdog disable bit hwmon: (nct6775) Fix writing pwmX_mode hwmon: (pmbus/max8688) Accept negative page register values hwmon: (pmbus/adm1275) Accept negative page register values Hector Martin (1): firewire-ohci: work around oversized DMA reads on JMicron controllers Helge Deller (1): parisc/pci: Switch LBA PCI bus from Hard Fail to Soft Fail mode Huang Ying (1): mm: fix races between address_space dereference and free in page_evicatable Igor Pylypiv (1): watchdog: f71808e_wdt: Fix magic close handling Jake Daryll Obina (1): jffs2: Fix use-after-free bug in jffs2_iget()'s error handling path James Smart (3): scsi: lpfc: Fix issue_lip if link is disabled scsi: lpfc: Fix soft lockup in lpfc worker thread during LIP testing scsi: lpfc: Fix frequency of Release WQE CQEs Jan Chochol (1): nfs: Do not convert nfs_idmap_cache_timeout to jiffies Jan Kara (1): udf: Provide saner default for invalid uid / gid Jay Vosburgh (1): virtio-net: Fix operstate for virtio when no VIRTIO_NET_F_STATUS Jean Delvare (1): firmware: dmi_scan: Fix handling of empty DMI strings Jeff Mahoney (1): btrfs: fix lockdep splat in btrfs_alloc_subvolume_writers Jens Axboe (1): sr: get/drop reference to device in revalidate and check_events Jeremy Cline (1): scsi: sd: Keep disk read-only when re-reading partition Joe Jin (1): xen-swiotlb: fix the check condition for xen_swiotlb_free_coherent Joey Pabalinas (1): net/tcp/illinois: replace broken algorithm reference link Johannes Berg (1): regulatory: add NUL to request alpha2 John Keeping (1): usb: gadget: f_uac2: fix bFirstInterface in composite gadget Karthikeyan Periyasamy (1): ath10k: Fix kernel panic while using worker (ath10k_sta_rc_update_wk) Kees Cook (1): NFC: llcp: Limit size of SDP URI Kirill A. Shutemov (1): asm-generic: provide generic_pmdp_establish() Lars-Peter Clausen (1): usb: gadget: ffs: Let setup() return USB_GADGET_DELAYED_STATUS Lenny Szubowicz (1): ACPI: acpi_pad: Fix memory leak in power saving threads Leon Romanovsky (2): RDMA/mlx5: Avoid memory leak in case of XRCD dealloc failure net/mlx5: Protect from command bit overflow Linus Lüssing (2): batman-adv: fix multicast-via-unicast transmission with AP isolation batman-adv: fix packet loss for broadcasted DHCP packets to a server Liu Bo (2): Btrfs: bail out on error during replay_dir_deletes Btrfs: fix NULL pointer dereference in log_dir_items Maciej W. Rozycki (2): MIPS: ptrace: Expose FIR register through FP regset MIPS: Fix ptrace(2) PTRACE_PEEKUSR and PTRACE_POKEUSR accesses to o32 FGRs Madhavan Srinivasan (1): powerpc/perf: Prevent kernel address leak to userspace via BHRB buffer Manish Rangankar (1): scsi: qla4xxx: skip error recovery in case of register disconnect. Mark Salter (1): irqchip/gic-v3: Change pr_debug message to pr_devel Masami Hiramatsu (3): selftests: ftrace: Add probe event argument syntax testcase selftests: ftrace: Add a testcase for string type with kprobe_event selftests: ftrace: Add a testcase for probepoint Mathias Kresin (1): MIPS: ath79: Fix AR724X_PLL_REG_PCIE_CONFIG offset Mathias Nyman (1): xhci: zero usb device slot_id member when disabling and freeing a xhci slot Mathieu Malaterre (1): powerpc: Add missing prototype for arch_irq_work_raise() Matt Redfearn (1): MIPS: TXx9: use IS_BUILTIN() for CONFIG_LEDS_CLASS Matthias Schiffer (3): batman-adv: fix packet checksum in receive path batman-adv: invalidate checksum on fragment reassembly batman-adv: fix header size check in batadv_dbg_arp() Maurizio Lombardi (1): cdrom: do not call check_disk_change() inside cdrom_open() Mauro Carvalho Chehab (1): media: dmxdev: fix error code for invalid ioctls Meelis Roos (1): scsi: aacraid: fix shutdown crash when init fails Mel Gorman (1): mm: pin address_space before dereferencing it while isolating an LRU page Merlijn Wajer (1): usb: musb: call pm_runtime_{get,put}_sync before reading vbus registers Michael Ellerman (2): powerpc/mpic: Check if cpu_possible() in mpic_physmask() powerpc/perf: Fix kernel address leak via sampling registers Michael Schmitz (1): zorro: Set up z->dev.dma_mask for the DMA API Nikolay Borisov (2): btrfs: Fix out of bounds access in btrfs_search_slot btrfs: Fix possible softlock on single core machines Paolo Bonzini (1): kvm: x86: fix KVM_XEN_HVM_CONFIG ioctl Pawel Dembicki (1): net: qmi_wwan: add BroadMobi BM806U 2020:2033 Peter Malone (1): fbdev: Fixing arbitrary kernel leak in case FBIOGETCMAP_SPARC in sbusfb_ioctl_helper(). Peter Zijlstra (1): perf/core: Fix perf_output_read_group() Petr Vorel (1): ima: Fallback to the builtin hash algorithm Philipp Puschmann (1): arm: dts: socfpga: fix GIC PPI warning Pierre-Yves Kerbrat (1): e1000e: allocate ring descriptors with dma_zalloc_coherent Qi Hou (1): dmaengine: pl330: fix a race condition in case of threaded irqs Qu Wenruo (1): btrfs: tests/qgroup: Fix wrong tree backref level Rafael J. Wysocki (1): PCI: Restore config space on runtime resume despite being unbound Randy Dunlap (1): kdb: make "mdr" command repeat Rich Felker (1): sh: fix debug trap failure to process signals before return to user Richard Guy Briggs (1): audit: return on memory error to avoid null pointer dereference Richard Haines (1): netlabel: If PF_INET6, check sk_buff ip header version Roger Pau Monne (1): xen/pirq: fix error path cleanup when binding MSIs Ross Lagerwall (1): xen/grant-table: Use put_page instead of free_page Samuel Neves (1): x86/topology: Update the 'cpu cores' field in /proc/cpuinfo correctly across CPU hotplug operations Sean Christopherson (1): KVM: VMX: raise internal error for exception during invalid protected mode state Sebastian Ott (2): s390/cio: fix return code after missing interrupt s390/cio: clear timer when terminating driver I/O Seunghun Han (1): ACPICA: acpi: acpica: fix acpi operand cache leak in nseval.c Stefan Agner (1): usb: gadget: fsl_udc_core: fix ep valid checks Stefano Brivio (2): vti4: Don't count header length twice on tunnel setup vti4: Don't override MTU passed on link creation via IFLA_MTU Steven Rostedt (VMware) (1): tools lib traceevent: Fix get_field_str() for dynamic strings Sujit Reddy Thumma (1): scsi: ufs: Enable quirk to ignore sending WRITE_SAME command Takashi Iwai (1): ALSA: vmaster: Propagate slave error Tang Junhui (4): bcache: fix for allocator and register thread race bcache: fix for data collapse after re-attaching an attached device bcache: return attach error when no cache set exist bcache: fix kcrashes with fio in RAID5 backend dev Tejun Heo (1): libata: Blacklist some Sandisk SSDs for NCQ Thinh Nguyen (1): usb: dwc3: Update DWC_usb31 GTXFIFOSIZ reg fields Thomas Vincent-Cross (1): PCI: Add function 1 DMA alias quirk for Marvell 88SE9220 Tom Abraham (1): swap: divide-by-zero when zero length swap file on ssd Tony Lindgren (2): ARM: OMAP3: Fix prm wake interrupt for resume ARM: OMAP: Fix dmtimer init for omap1 Toshiaki Makita (2): net: Fix vlan untag for bridge and vlan_dev with reorder_hdr off net: Fix untag for vlan packets without ethernet header Ulf Magnusson (3): kconfig: Don't leak main menus during parsing kconfig: Fix automatic menu creation mem leak kconfig: Fix expr_free() E_NOT leak Wolfram Sang (2): drm/exynos: fix comparison to bitshift when dealing with a mask usb: gadget: udc: change comparison to bitshift when dealing with a mask Xin Long (1): sit: fix IFLA_MTU ignored on NEWLINK Yelena Krivosheev (1): net: mvneta: fix enable of all initialized RXQs Yisheng Xie (3): mm/mempolicy: fix the check of nodemask from user mm/mempolicy: add nodes_empty check in SYSC_migrate_pages mm/mempolicy.c: avoid use uninitialized preferred_node Yufen Yu (2): md raid10: fix NULL deference in handle_write_completed() md/raid1: fix NULL pointer dereference mulhern (1): dm thin: fix documentation relative to low water mark threshold piaojun (2): ocfs2: return -EROFS to mount.ocfs2 if inode block is invalid ocfs2/acl: use 'ip_xattr_sem' to protect getting extended attribute zhongjiang (1): kernel/signal.c: avoid undefined behaviour in kill_something_info
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