Buildresult: powerpc-next/powerpc-allnoconfig/powerpc-gcc4.6 built on Oct 12 2015, 22:55

kisskb

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Status:	OK
Date/Time:	Oct 12 2015, 22:55
Duration:	0:00:14.463794
Builder:	ka2
Revision:	powerpc/mm: Differentiate between hugetlb and THP during page walk (`891121e6c02c6242487aa4ea1d5c75b7ecdc45ee)`
Target:	powerpc-next/powerpc-allnoconfig/powerpc-gcc4.6
Branch:	powerpc-next
Compiler:	powerpc-gcc4.6 (powerpc-linux-gcc (GCC) 4.6.3)
Config:	allnoconfig (download)
Log:	Download original No warnings found in log. Full Log # git rev-parse -q --verify 891121e6c02c6242487aa4ea1d5c75b7ecdc45ee^{commit} 891121e6c02c6242487aa4ea1d5c75b7ecdc45ee already have revision, skipping fetch # git checkout -q -f -B kisskb 891121e6c02c6242487aa4ea1d5c75b7ecdc45ee # git clean -qxdf # git log -1 commit 891121e6c02c6242487aa4ea1d5c75b7ecdc45ee Author: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Date: Fri Oct 9 08:32:21 2015 +0530 powerpc/mm: Differentiate between hugetlb and THP during page walk We need to properly identify whether a hugepage is an explicit or a transparent hugepage in follow_huge_addr(). We used to depend on hugepage shift argument to do that. But in some case that can result in wrong results. For ex: On finding a transparent hugepage we set hugepage shift to PMD_SHIFT. But we can end up clearing the thp pte, via pmdp_huge_get_and_clear. We do prevent reusing the pfn page via the usage of kick_all_cpus_sync(). But that happens after we updated the pte to 0. Hence in follow_huge_addr() we can find hugepage shift set, but transparent huge page check fail for a thp pte. NOTE: We fixed a variant of this race against thp split in commit 691e95fd7396905a38d98919e9c150dbc3ea21a3 ("powerpc/mm/thp: Make page table walk safe against thp split/collapse") Without this patch, we may hit the BUG_ON(flags & FOLL_GET) in follow_page_mask occasionally. In the long term, we may want to switch ppc64 64k page size config to enable CONFIG_ARCH_WANT_GENERAL_HUGETLB Reported-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # < /opt/cross/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version # < git log --format=%s --max-count=1 891121e6c02c6242487aa4ea1d5c75b7ecdc45ee # < make -j 48 ARCH=powerpc O=/home/kisskb/slave/build/powerpc-next_powerpc-allnoconfig_powerpc CROSS_COMPILE=/opt/cross/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- allnoconfig # make -j 48 ARCH=powerpc O=/home/kisskb/slave/build/powerpc-next_powerpc-allnoconfig_powerpc CROSS_COMPILE=/opt/cross/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- make[1]: Entering directory '/home/kisskb/slave/build/powerpc-next_powerpc-allnoconfig_powerpc' GEN ./Makefile scripts/kconfig/conf --silentoldconfig Kconfig CHK include/config/kernel.release CHK include/generated/uapi/linux/version.h GEN ./Makefile WRAP arch/powerpc/include/generated/asm/clkdev.h WRAP arch/powerpc/include/generated/asm/div64.h WRAP arch/powerpc/include/generated/asm/irq_regs.h WRAP arch/powerpc/include/generated/asm/irq_work.h WRAP arch/powerpc/include/generated/asm/local64.h WRAP arch/powerpc/include/generated/asm/mcs_spinlock.h WRAP arch/powerpc/include/generated/asm/preempt.h WRAP arch/powerpc/include/generated/asm/rwsem.h WRAP arch/powerpc/include/generated/asm/vtime.h UPD include/generated/uapi/linux/version.h UPD include/config/kernel.release HOSTCC scripts/dtc/dtc.o HOSTCC scripts/dtc/flattree.o HOSTCC scripts/dtc/fstree.o CC scripts/mod/empty.o HOSTCC scripts/dtc/data.o HOSTCC scripts/mod/mk_elfconfig HOSTCC scripts/dtc/livetree.o HOSTCC scripts/dtc/treesource.o CC scripts/mod/devicetable-offsets.s HOSTCC scripts/dtc/srcpos.o SHIPPED scripts/dtc/dtc-parser.tab.c HOSTCC scripts/dtc/util.o HOSTCC scripts/dtc/checks.o SHIPPED scripts/dtc/dtc-lexer.lex.c HOSTCC scripts/dtc/dtc-parser.tab.o SHIPPED scripts/dtc/dtc-parser.tab.h HOSTCC scripts/dtc/dtc-lexer.lex.o GEN scripts/mod/devicetable-offsets.h MKELF scripts/mod/elfconfig.h HOSTCC scripts/mod/modpost.o HOSTCC scripts/mod/file2alias.o HOSTCC scripts/mod/sumversion.o HOSTLD scripts/dtc/dtc HOSTLD scripts/mod/modpost Using /home/kisskb/slave/src as source for kernel CHK include/generated/utsrelease.h UPD include/generated/utsrelease.h CHK include/generated/timeconst.h CC kernel/bounds.s UPD include/generated/timeconst.h CHK include/generated/bounds.h UPD include/generated/bounds.h CC arch/powerpc/kernel/asm-offsets.s CHK include/generated/asm-offsets.h UPD include/generated/asm-offsets.h CALL /home/kisskb/slave/src/scripts/checksyscalls.sh LD usr/built-in.o CC init/main.o CHK include/generated/compile.h CC init/do_mounts.o CC init/noinitramfs.o CC init/init_task.o UPD include/generated/compile.h CC init/version.o LD arch/powerpc/sysdev/built-in.o CC arch/powerpc/mm/mem.o CC arch/powerpc/mm/fault.o AS arch/powerpc/lib/string.o CC arch/powerpc/mm/pgtable.o CC arch/powerpc/lib/alloc.o AS arch/powerpc/lib/crtsavres.o CC arch/powerpc/mm/mmap.o CC arch/powerpc/kernel/cputable.o CC arch/powerpc/mm/init_32.o LD arch/powerpc/platforms/built-in.o CC arch/powerpc/kernel/syscalls.o CC arch/powerpc/lib/code-patching.o CC arch/powerpc/lib/ppc_ksyms.o AS arch/powerpc/lib/checksum_32.o CC arch/powerpc/kernel/irq.o CC arch/powerpc/mm/pgtable_32.o CC arch/powerpc/lib/feature-fixups.o CC arch/powerpc/kernel/ptrace.o AS arch/powerpc/lib/copy_32.o CC arch/powerpc/kernel/signal_32.o CC arch/powerpc/kernel/align.o AS arch/powerpc/lib/div64.o CC arch/powerpc/kernel/pmc.o CC arch/powerpc/mm/mmu_context_hash32.o AS arch/powerpc/mm/hash_low_32.o CC arch/powerpc/mm/ppc_mmu_32.o CC arch/powerpc/kernel/signal.o CC arch/powerpc/kernel/idle.o CC arch/powerpc/mm/tlb_hash32.o CPP arch/powerpc/kernel/systbl_chk.i CC arch/powerpc/kernel/sysfs.o CC arch/powerpc/kernel/cacheinfo.o LD arch/powerpc/math-emu/built-in.o CC arch/powerpc/kernel/vdso.o CC arch/powerpc/kernel/process.o CC arch/powerpc/mm/hugetlbpage.o CC arch/powerpc/kernel/traps.o CC arch/powerpc/kernel/time.o CC arch/powerpc/kernel/setup-common.o CC arch/powerpc/kernel/prom.o CC arch/powerpc/kernel/udbg.o AS arch/powerpc/kernel/misc.o LD arch/powerpc/crypto/built-in.o CC arch/powerpc/kernel/io.o CC arch/powerpc/kernel/dma.o AS arch/powerpc/kernel/misc_32.o CC arch/powerpc/kernel/of_platform.o LD arch/powerpc/net/built-in.o CC arch/powerpc/kernel/prom_parse.o AS arch/powerpc/kernel/idle_6xx.o AS arch/powerpc/kernel/l2cr_6xx.o AS arch/powerpc/kernel/cpu_setup_6xx.o LD certs/built-in.o AS arch/powerpc/kernel/entry_32.o CC arch/powerpc/kernel/setup_32.o CC arch/powerpc/kernel/pci-common.o CC arch/powerpc/kernel/pci_32.o CC arch/powerpc/kernel/pci_of_scan.o CC arch/powerpc/kernel/iomap.o AS arch/powerpc/kernel/head_32.o LDS arch/powerpc/kernel/vmlinux.lds CALL /home/kisskb/slave/src/arch/powerpc/kernel/systbl_chk.sh AS arch/powerpc/kernel/fpu.o AS arch/powerpc/kernel/systbl.o LD ipc/built-in.o CC security/commoncap.o CC security/min_addr.o LD crypto/built-in.o LD block/built-in.o CC mm/mempool.o CC mm/oom_kill.o CC mm/filemap.o LD sound/built-in.o CC kernel/fork.o CC mm/page_alloc.o CC kernel/exec_domain.o CC mm/maccess.o CC mm/page-writeback.o CC kernel/cpu.o CC mm/readahead.o CC kernel/panic.o CC mm/swap.o CC mm/truncate.o CC mm/vmscan.o LD firmware/built-in.o CC mm/shmem.o LD init/mounts.o CC fs/open.o CC mm/util.o LD init/built-in.o CC mm/mmzone.o CC kernel/exit.o CC mm/vmstat.o CC mm/mm_init.o CC mm/backing-dev.o CC fs/read_write.o LD net/built-in.o CC fs/file_table.o CC kernel/softirq.o CC mm/mmu_context.o CC fs/super.o CC mm/percpu.o CC fs/char_dev.o CC kernel/sysctl.o CC kernel/resource.o CC mm/slab_common.o CC kernel/sysctl_binary.o CC mm/vmacache.o CC mm/compaction.o CC mm/interval_tree.o CC mm/list_lru.o CC mm/workingset.o LD security/built-in.o CC mm/debug.o CC fs/stat.o CC mm/gup.o CC fs/exec.o CC fs/pipe.o CC mm/highmem.o CC mm/memory.o CC mm/mincore.o CC fs/namei.o CC kernel/capability.o CC lib/lockref.o CC mm/mlock.o CC fs/fcntl.o CC mm/mmap.o CC mm/mprotect.o CC mm/mremap.o CC kernel/ptrace.o CC mm/msync.o CC mm/rmap.o LD drivers/amba/built-in.o CC kernel/user.o CC lib/bcd.o CC lib/div64.o CC kernel/signal.o CC mm/vmalloc.o CC mm/pagewalk.o CC fs/ioctl.o LD drivers/auxdisplay/built-in.o CC lib/sort.o CC mm/pgtable-generic.o CC lib/parser.o CC mm/init-mm.o CC kernel/sys.o CC mm/nobootmem.o CC kernel/kmod.o CC lib/halfmd4.o CC kernel/workqueue.o CC fs/readdir.o CC mm/memblock.o CC drivers/base/component.o CC mm/dmapool.o CC drivers/base/core.o CC kernel/pid.o CC drivers/base/syscore.o CC drivers/base/bus.o CC drivers/base/dd.o CC kernel/task_work.o CC fs/dcache.o CC mm/slub.o CC fs/select.o CC lib/debug_locks.o CC lib/random32.o CC kernel/extable.o CC kernel/params.o CC fs/inode.o LD drivers/block/built-in.o LDS arch/powerpc/kernel/vdso32/vdso32.lds CC lib/kasprintf.o VDSO32A arch/powerpc/kernel/vdso32/sigtramp.o CC lib/bust_spinlocks.o LD arch/powerpc/mm/built-in.o CC fs/attr.o CC lib/bitmap.o LD arch/powerpc/lib/built-in.o CC fs/bad_inode.o VDSO32A arch/powerpc/kernel/vdso32/gettimeofday.o CC fs/file.o CC fs/filesystems.o LD drivers/bus/built-in.o VDSO32A arch/powerpc/kernel/vdso32/datapage.o CC fs/namespace.o CC kernel/kthread.o VDSO32A arch/powerpc/kernel/vdso32/cacheflush.o CC fs/seq_file.o CC fs/xattr.o CC fs/libfs.o VDSO32A arch/powerpc/kernel/vdso32/note.o LD drivers/cdrom/built-in.o CC lib/scatterlist.o CC fs/fs-writeback.o CC drivers/base/driver.o CC fs/pnode.o CC lib/gcd.o LD drivers/clk/built-in.o CC fs/splice.o CC kernel/sys_ni.o CC kernel/nsproxy.o VDSO32L arch/powerpc/kernel/vdso32/vdso32.so.dbg CC kernel/notifier.o CC drivers/base/class.o CC fs/sync.o CC drivers/char/mem.o CC fs/utimes.o OBJCOPY arch/powerpc/kernel/vdso32/vdso32.so CC lib/lcm.o CC kernel/ksysfs.o AS arch/powerpc/kernel/vdso32/vdso32_wrapper.o CC kernel/cred.o CC kernel/reboot.o LD drivers/clocksource/built-in.o CC lib/list_sort.o CC drivers/base/platform.o CC lib/uuid.o LD arch/powerpc/kernel/vdso32/built-in.o CC drivers/char/random.o CC lib/flex_array.o LD drivers/firewire/built-in.o CC drivers/base/cpu.o CC fs/stack.o LD arch/powerpc/kernel/built-in.o CC drivers/base/firmware.o CC kernel/async.o CC lib/iov_iter.o CC lib/clz_ctz.o CC lib/bsearch.o CC fs/fs_struct.o CC kernel/smpboot.o CC fs/statfs.o CC kernel/range.o CC fs/fs_pin.o CC drivers/base/init.o LD kernel/livepatch/built-in.o CC lib/find_bit.o CC kernel/irq/irqdesc.o CC lib/llist.o LD drivers/firmware/broadcom/built-in.o CC fs/nsfs.o CC kernel/power/qos.o LD drivers/firmware/built-in.o CC drivers/base/map.o CC fs/no-block.o CC lib/memweight.o CC kernel/locking/mutex.o CC kernel/printk/printk.o LD drivers/gpio/built-in.o CC lib/kfifo.o CC kernel/rcu/update.o CC lib/percpu-refcount.o CC lib/percpu_ida.o CC lib/rhashtable.o CC drivers/base/devres.o LD fs/devpts/built-in.o CC drivers/base/attribute_container.o LD fs/exofs/built-in.o CC drivers/base/transport_class.o LD fs/quota/built-in.o CC fs/binfmt_elf.o CC drivers/base/topology.o CC lib/string_helpers.o CC lib/reciprocal_div.o CC lib/hexdump.o CC kernel/dma.o CC lib/kstrtox.o LD drivers/gpu/vga/built-in.o CC fs/ramfs/inode.o LD drivers/hsi/clients/built-in.o CC kernel/up.o CC kernel/elfcore.o CC drivers/char/misc.o LD drivers/hsi/controllers/built-in.o LD drivers/idle/built-in.o CC drivers/base/container.o CC drivers/base/property.o CC kernel/irq/handle.o CC kernel/sched/core.o CC lib/pci_iomap.o LD fs/notify/dnotify/built-in.o LD fs/notify/fanotify/built-in.o CC lib/iomap_copy.o CC drivers/base/cacheinfo.o LD drivers/i2c/algos/built-in.o LD drivers/hsi/built-in.o CC drivers/irqchip/irqchip.o CC lib/devres.o CC kernel/rcu/tiny.o LD drivers/gpu/drm/bridge/built-in.o LD drivers/leds/built-in.o CC drivers/base/dma-mapping.o CC lib/hweight.o LD drivers/i2c/busses/built-in.o LD fs/notify/inotify/built-in.o LD drivers/base/power/built-in.o CC kernel/time/time.o CC kernel/locking/semaphore.o LD drivers/char/agp/built-in.o CC lib/bitrev.o CC kernel/locking/rwsem.o LD drivers/lguest/built-in.o LD drivers/gpu/drm/i2c/built-in.o LD drivers/macintosh/built-in.o CC kernel/memremap.o LD drivers/i2c/muxes/built-in.o LD fs/notify/built-in.o LD drivers/gpu/drm/panel/built-in.o CC kernel/locking/percpu-rwsem.o HOSTCC lib/gen_crc32table CC lib/syscall.o LD drivers/mfd/built-in.o CC lib/strncpy_from_user.o CC lib/atomic64.o LD drivers/i2c/built-in.o CC lib/strnlen_user.o LD drivers/mmc/built-in.o CC kernel/irq/manage.o CC kernel/time/timer.o CC kernel/time/hrtimer.o LD drivers/net/built-in.o LD drivers/irqchip/built-in.o CC lib/argv_split.o LD drivers/gpu/drm/tilcdc/built-in.o CC lib/cmdline.o LD drivers/nfc/built-in.o CC lib/ctype.o LD drivers/platform/built-in.o LD drivers/soc/built-in.o LD drivers/char/built-in.o LD drivers/pwm/built-in.o LD drivers/gpu/drm/built-in.o LD kernel/power/built-in.o CC lib/dec_and_lock.o LD drivers/misc/cb710/built-in.o CC fs/ramfs/file-mmu.o CC lib/dump_stack.o CC lib/decompress.o CC lib/earlycpio.o CC kernel/locking/rwsem-xadd.o CC kernel/time/itimer.o CC lib/extable.o CC lib/fdt.o LD drivers/usb/host/built-in.o CC lib/fdt_empty_tree.o CC lib/fdt_rw.o LD drivers/misc/lis3lv02d/built-in.o LD drivers/misc/eeprom/built-in.o CC lib/fdt_ro.o LD drivers/gpu/built-in.o CC drivers/of/base.o CC lib/fdt_strerror.o LD drivers/tty/serial/built-in.o LD drivers/tty/ipwireless/built-in.o CC lib/fdt_sw.o LD drivers/usb/built-in.o CC lib/fdt_wip.o LD kernel/rcu/built-in.o LD drivers/misc/mic/bus/built-in.o LD mm/built-in.o CC lib/flex_proportions.o CC lib/idr.o CC lib/ioremap.o LD drivers/misc/ti-st/built-in.o LD drivers/video/backlight/built-in.o CC lib/int_sqrt.o CC kernel/sched/loadavg.o CC kernel/time/posix-timers.o LD kernel/printk/built-in.o CC lib/irq_regs.o CC drivers/of/device.o CC lib/is_single_threaded.o LD drivers/misc/mic/built-in.o CC kernel/irq/spurious.o CC drivers/pci/access.o CC lib/klist.o CC drivers/of/fdt_address.o CC drivers/of/fdt.o CC drivers/of/platform.o CC drivers/of/address.o CC kernel/irq/resend.o LD drivers/tty/vt/built-in.o CC drivers/of/irq.o LD drivers/base/built-in.o CC drivers/video/fbdev/core/fb_notify.o LD drivers/misc/built-in.o CC lib/kobject.o CC lib/kobject_uevent.o LD drivers/media/common/b2c2/built-in.o LD drivers/tty/built-in.o CC lib/md5.o CC kernel/time/posix-cpu-timers.o CC lib/plist.o CC lib/nmi_backtrace.o CC lib/proportions.o CC lib/radix-tree.o CC lib/ratelimit.o CC lib/rbtree.o CC lib/seq_buf.o CC lib/sha1.o LD drivers/media/common/saa7146/built-in.o CC kernel/time/timekeeping.o CC lib/show_mem.o CC lib/string.o LD kernel/locking/built-in.o LD fs/ramfs/ramfs.o LD drivers/media/common/siano/built-in.o CC lib/timerqueue.o CC kernel/time/ntp.o CC lib/vsprintf.o CC kernel/sched/clock.o LD fs/ramfs/built-in.o CC kernel/time/clocksource.o CC kernel/time/jiffies.o CC kernel/time/timer_list.o CC drivers/of/of_pci_irq.o CC drivers/of/of_pci.o LD drivers/media/common/built-in.o CC kernel/time/timeconv.o LD fs/built-in.o CC kernel/time/timecounter.o CC kernel/time/posix-clock.o CC kernel/time/alarmtimer.o LD drivers/media/firewire/built-in.o CC kernel/time/clockevents.o CC kernel/irq/chip.o LD drivers/video/fbdev/core/built-in.o CC drivers/pci/bus.o CC kernel/time/tick-common.o CC kernel/irq/dummychip.o LD drivers/media/i2c/soc_camera/built-in.o CC drivers/of/of_reserved_mem.o LD drivers/media/mmc/siano/built-in.o LD drivers/media/platform/omap/built-in.o LD drivers/video/fbdev/omap2/displays-new/built-in.o CC kernel/irq/devres.o LD drivers/media/mmc/built-in.o LD drivers/media/i2c/built-in.o LD drivers/video/fbdev/omap2/dss/built-in.o CC kernel/irq/irqdomain.o LD drivers/media/platform/built-in.o CC kernel/sched/cputime.o CC drivers/pci/probe.o CC kernel/sched/fair.o CC drivers/pci/host-bridge.o CC kernel/sched/idle_task.o CC kernel/sched/rt.o LD drivers/media/tuners/built-in.o LD drivers/video/fbdev/omap2/built-in.o CC drivers/pci/remove.o CC kernel/sched/deadline.o CC drivers/pci/pci-driver.o CC drivers/pci/pci.o LD drivers/media/rc/keymaps/built-in.o CC kernel/sched/stop_task.o CC kernel/sched/wait.o CC kernel/sched/completion.o CC drivers/pci/search.o CC kernel/sched/idle.o LD drivers/video/fbdev/built-in.o CC drivers/pci/pci-sysfs.o LD drivers/media/rc/built-in.o CC drivers/pci/setup-res.o CC drivers/pci/rom.o CC drivers/pci/irq.o LD drivers/video/built-in.o CC drivers/pci/vpd.o CC drivers/pci/vc.o CC drivers/pci/setup-bus.o CC drivers/pci/syscall.o CC drivers/pci/of.o LD drivers/pci/host/built-in.o LD drivers/media/pci/b2c2/built-in.o LD drivers/media/pci/ngene/built-in.o LD drivers/media/pci/mantis/built-in.o LD drivers/media/pci/ddbridge/built-in.o LD drivers/media/pci/dm1105/built-in.o LD drivers/media/pci/netup_unidvb/built-in.o LD drivers/media/pci/pluto2/built-in.o LD drivers/of/built-in.o LD drivers/media/pci/pt3/built-in.o LD drivers/media/pci/pt1/built-in.o LD drivers/media/usb/b2c2/built-in.o LD drivers/media/usb/dvb-usb/built-in.o LD drivers/media/pci/smipcie/built-in.o LD drivers/media/pci/ttpci/built-in.o LD drivers/media/usb/dvb-usb-v2/built-in.o LD drivers/media/pci/saa7146/built-in.o LD drivers/media/usb/ttusb-dec/built-in.o LD drivers/media/usb/stkwebcam/built-in.o LD drivers/media/usb/siano/built-in.o LD drivers/media/usb/s2255/built-in.o LD drivers/media/usb/ttusb-budget/built-in.o LD drivers/media/usb/zr364xx/built-in.o LD drivers/media/pci/built-in.o LD drivers/media/usb/built-in.o LD drivers/media/built-in.o LD kernel/irq/built-in.o LD kernel/sched/built-in.o LD kernel/time/built-in.o AR lib/lib.a LD drivers/pci/built-in.o LD kernel/built-in.o LD drivers/built-in.o GEN lib/crc32table.h CC lib/crc32.o LD lib/built-in.o LINK vmlinux LD vmlinux.o MODPOST vmlinux.o GEN .version CHK include/generated/compile.h UPD include/generated/compile.h CC init/version.o LD init/built-in.o LD vmlinux SYSMAP System.map /opt/cross/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-strip -s -R .comment vmlinux -o arch/powerpc/boot/vmlinux.strip make[1]: Leaving directory '/home/kisskb/slave/build/powerpc-next_powerpc-allnoconfig_powerpc' Completed OK # rm -rf /home/kisskb/slave/build/powerpc-next_powerpc-allnoconfig_powerpc # Build took: 0:00:14.463794

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