# git rev-parse -q --verify 29b37f6b61016bcfa35bc1be183f6795a64529aa^{commit} 29b37f6b61016bcfa35bc1be183f6795a64529aa already have revision, skipping fetch # git checkout -q -f -B kisskb 29b37f6b61016bcfa35bc1be183f6795a64529aa # git clean -qxdf # git log -1 commit 29b37f6b61016bcfa35bc1be183f6795a64529aa Author: Michael Ellerman Date: Tue Nov 15 21:59:38 2016 +1100 powerpc/64: Define ILLEGAL_POINTER_VALUE for 64-bit This is used in poison.h to offset poison values so that they don't point directly into user space. The value we choose sits roughly between user and kernel space, which means on their own the poison values don't point anywhere useful. If an attacker can cause an access at some offset from the poison value then we may still be in trouble, but by putting the poison values between user and kernel space we maximise the required size of that offset. Signed-off-by: Michael Ellerman # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version # < git log --format=%s --max-count=1 29b37f6b61016bcfa35bc1be183f6795a64529aa # < make -j 48 ARCH=powerpc O=/home/kisskb/slave/build/powerpc-next_powerpc-allnoconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/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/kisskb/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 GEN ./Makefile UPD include/config/kernel.release WRAP arch/powerpc/include/generated/asm/clkdev.h WRAP arch/powerpc/include/generated/asm/div64.h WRAP arch/powerpc/include/generated/asm/export.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 CHK include/generated/uapi/linux/version.h UPD include/generated/uapi/linux/version.h CHK include/generated/utsrelease.h UPD include/generated/utsrelease.h Using /home/kisskb/slave/src as source for kernel HOSTCC scripts/sortextable HOSTCC scripts/dtc/dtc.o CC scripts/mod/empty.o HOSTCC scripts/dtc/flattree.o HOSTCC scripts/mod/mk_elfconfig HOSTCC scripts/dtc/fstree.o CC scripts/mod/devicetable-offsets.s HOSTCC scripts/dtc/data.o HOSTCC scripts/dtc/livetree.o HOSTCC scripts/dtc/treesource.o HOSTCC scripts/dtc/srcpos.o HOSTCC scripts/dtc/checks.o HOSTCC scripts/dtc/util.o SHIPPED scripts/dtc/dtc-lexer.lex.c SHIPPED scripts/dtc/dtc-parser.tab.c SHIPPED scripts/dtc/dtc-parser.tab.h HOSTCC scripts/dtc/dtc-parser.tab.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 HOSTCC scripts/dtc/dtc-lexer.lex.o HOSTLD scripts/dtc/dtc HOSTLD scripts/mod/modpost 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 CC init/main.o CHK include/generated/compile.h CC init/do_mounts.o LD usr/built-in.o CC init/noinitramfs.o CC init/init_task.o UPD include/generated/compile.h CC init/version.o CC arch/powerpc/mm/fault.o CC arch/powerpc/mm/mem.o CC arch/powerpc/mm/pgtable.o CC arch/powerpc/mm/mmap.o LD arch/powerpc/sysdev/built-in.o CC arch/powerpc/mm/init_32.o AS arch/powerpc/lib/string.o CC arch/powerpc/mm/pgtable_32.o AS arch/powerpc/lib/crtsavres.o CC arch/powerpc/lib/alloc.o CC arch/powerpc/mm/ppc_mmu_32.o AS arch/powerpc/mm/hash_low_32.o AS arch/powerpc/lib/copy_32.o CC arch/powerpc/mm/mmu_context_hash32.o CC arch/powerpc/lib/feature-fixups.o AS arch/powerpc/lib/div64.o CC arch/powerpc/lib/checksum_wrappers.o CC arch/powerpc/mm/hugetlbpage.o CC arch/powerpc/mm/tlb_hash32.o CC arch/powerpc/lib/code-patching.o AS arch/powerpc/lib/checksum_32.o CC arch/powerpc/kernel/cputable.o LD arch/powerpc/math-emu/built-in.o CC arch/powerpc/kernel/signal_32.o LD arch/powerpc/platforms/built-in.o CC arch/powerpc/kernel/vdso.o CC arch/powerpc/kernel/irq.o CC arch/powerpc/kernel/process.o CC arch/powerpc/kernel/align.o CPP arch/powerpc/kernel/systbl_chk.i CC arch/powerpc/kernel/syscalls.o CC arch/powerpc/kernel/pmc.o CC arch/powerpc/kernel/idle.o CC arch/powerpc/kernel/ptrace.o AS arch/powerpc/kernel/idle_6xx.o CC arch/powerpc/kernel/signal.o CC arch/powerpc/kernel/sysfs.o CC arch/powerpc/kernel/cacheinfo.o CC arch/powerpc/kernel/time.o CC arch/powerpc/kernel/traps.o CC arch/powerpc/kernel/prom.o AS arch/powerpc/kernel/misc.o CC arch/powerpc/kernel/udbg.o CC arch/powerpc/kernel/setup-common.o AS arch/powerpc/kernel/l2cr_6xx.o AS arch/powerpc/kernel/cpu_setup_6xx.o CC arch/powerpc/kernel/dma.o CC arch/powerpc/kernel/io.o CC arch/powerpc/kernel/of_platform.o AS arch/powerpc/kernel/misc_32.o CC arch/powerpc/kernel/prom_parse.o AS arch/powerpc/kernel/entry_32.o LD arch/powerpc/crypto/built-in.o CC arch/powerpc/kernel/setup_32.o CC arch/powerpc/kernel/pci_32.o CC arch/powerpc/kernel/pci-common.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/vdso32/vdso32.lds AS arch/powerpc/kernel/fpu.o LDS arch/powerpc/kernel/vmlinux.lds LD arch/powerpc/net/built-in.o VDSO32A arch/powerpc/kernel/vdso32/sigtramp.o CALL /home/kisskb/slave/src/arch/powerpc/kernel/systbl_chk.sh VDSO32A arch/powerpc/kernel/vdso32/datapage.o VDSO32A arch/powerpc/kernel/vdso32/cacheflush.o AS arch/powerpc/kernel/systbl.o VDSO32A arch/powerpc/kernel/vdso32/gettimeofday.o VDSO32A arch/powerpc/kernel/vdso32/note.o LD certs/built-in.o VDSO32L arch/powerpc/kernel/vdso32/vdso32.so.dbg OBJCOPY arch/powerpc/kernel/vdso32/vdso32.so AS arch/powerpc/kernel/vdso32/vdso32_wrapper.o LD arch/powerpc/lib/built-in.o LD arch/powerpc/kernel/vdso32/built-in.o LD ipc/built-in.o CC security/min_addr.o CC security/commoncap.o LD arch/powerpc/mm/built-in.o LD crypto/built-in.o LD block/built-in.o CC mm/filemap.o CC mm/mempool.o CC mm/oom_kill.o CC mm/maccess.o CC mm/page_alloc.o CC kernel/cpu.o CC kernel/exit.o CC kernel/fork.o CC kernel/exec_domain.o CC mm/vmstat.o CC kernel/resource.o CC kernel/softirq.o CC kernel/capability.o CC kernel/sysctl.o CC kernel/sysctl_binary.o CC kernel/ptrace.o CC mm/util.o CC mm/swap.o CC mm/shmem.o CC mm/page-writeback.o CC mm/truncate.o CC mm/readahead.o CC mm/vmscan.o CC kernel/panic.o CC mm/backing-dev.o CC mm/mmzone.o CC kernel/signal.o CC kernel/user.o CC mm/mm_init.o CC mm/mmu_context.o CC fs/open.o CC fs/read_write.o CC fs/file_table.o CC kernel/sys.o CC fs/super.o LD sound/built-in.o CC fs/char_dev.o CC kernel/kmod.o CC fs/stat.o LD firmware/built-in.o CC kernel/workqueue.o CC kernel/pid.o CC fs/exec.o LD init/mounts.o LD init/built-in.o LD net/built-in.o CC mm/slab_common.o CC mm/percpu.o CC mm/compaction.o CC mm/vmacache.o CC kernel/task_work.o CC mm/interval_tree.o CC mm/list_lru.o CC kernel/extable.o LD virt/lib/built-in.o CC kernel/params.o LD virt/built-in.o CC fs/pipe.o CC mm/workingset.o CC kernel/kthread.o CC fs/namei.o CC kernel/sys_ni.o CC kernel/nsproxy.o CC mm/debug.o CC kernel/notifier.o CC mm/highmem.o CC mm/gup.o LD drivers/amba/built-in.o CC mm/memory.o CC kernel/ksysfs.o CC kernel/cred.o CC kernel/reboot.o LD drivers/auxdisplay/built-in.o CC kernel/async.o LD arch/powerpc/kernel/built-in.o CC kernel/range.o CC mm/mincore.o CC mm/mlock.o CC lib/lockref.o CC kernel/smpboot.o LD drivers/block/built-in.o LD security/built-in.o CC mm/mmap.o CC mm/mprotect.o CC kernel/ucount.o CC mm/mremap.o LD drivers/bus/built-in.o CC mm/msync.o CC fs/fcntl.o CC kernel/irq/irqdesc.o LD kernel/livepatch/built-in.o LD drivers/cdrom/built-in.o CC fs/ioctl.o CC lib/bcd.o CC mm/rmap.o CC kernel/power/qos.o CC kernel/locking/mutex.o CC kernel/printk/printk.o CC drivers/base/component.o CC lib/div64.o CC fs/readdir.o CC drivers/char/mem.o CC kernel/rcu/update.o CC kernel/dma.o CC kernel/up.o CC kernel/elfcore.o CC kernel/memremap.o CC drivers/base/core.o CC mm/vmalloc.o CC drivers/base/bus.o CC mm/pagewalk.o CC kernel/sched/core.o CC mm/pgtable-generic.o CC fs/select.o CC mm/init-mm.o CC fs/dcache.o CC mm/nobootmem.o CC mm/memblock.o CC kernel/time/time.o CC mm/dmapool.o CC fs/inode.o CC mm/slub.o CC kernel/irq/handle.o CC drivers/char/random.o CC kernel/irq/manage.o CC kernel/irq/spurious.o CC fs/bad_inode.o CC fs/attr.o CC drivers/char/misc.o CC fs/file.o /home/kisskb/slave/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl': /home/kisskb/slave/src/kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] CC kernel/irq/resend.o CC kernel/rcu/sync.o LD drivers/char/agp/built-in.o CC lib/sort.o CC kernel/rcu/tiny.o CC lib/halfmd4.o CC lib/parser.o CC kernel/locking/semaphore.o CC lib/debug_locks.o CC drivers/base/dd.o LD kernel/power/built-in.o CC lib/random32.o CC lib/bust_spinlocks.o CC drivers/base/syscore.o CC fs/filesystems.o CC fs/namespace.o CC lib/kasprintf.o CC lib/bitmap.o CC fs/seq_file.o CC lib/scatterlist.o LD kernel/printk/built-in.o CC fs/xattr.o CC kernel/time/timer.o CC kernel/irq/chip.o LD drivers/char/ipmi/built-in.o CC kernel/irq/dummychip.o CC fs/libfs.o CC fs/fs-writeback.o CC fs/pnode.o CC kernel/irq/devres.o CC kernel/irq/irqdomain.o LD drivers/clk/bcm/built-in.o CC fs/splice.o CC fs/sync.o LD drivers/clk/mvebu/built-in.o CC fs/utimes.o CC fs/stack.o CC kernel/locking/rwsem.o LD drivers/clk/ti/built-in.o CC kernel/locking/percpu-rwsem.o CC drivers/base/driver.o CC lib/gcd.o CC lib/lcm.o LD drivers/clk/built-in.o CC drivers/base/class.o CC kernel/locking/rwsem-xadd.o CC drivers/base/platform.o LD kernel/rcu/built-in.o CC fs/fs_struct.o CC lib/list_sort.o CC kernel/time/hrtimer.o CC lib/uuid.o LD drivers/clocksource/built-in.o CC lib/iov_iter.o CC lib/flex_array.o CC lib/clz_ctz.o CC kernel/time/itimer.o CC lib/bsearch.o CC fs/statfs.o LD drivers/firewire/built-in.o CC drivers/base/cpu.o LD drivers/char/built-in.o CC lib/find_bit.o CC lib/llist.o LD drivers/firmware/meson/built-in.o CC kernel/time/posix-timers.o LD drivers/firmware/broadcom/built-in.o CC fs/fs_pin.o LD drivers/firmware/built-in.o CC lib/memweight.o CC lib/kfifo.o CC kernel/time/posix-cpu-timers.o CC kernel/time/timekeeping.o CC fs/nsfs.o LD drivers/hwtracing/intel_th/built-in.o LD drivers/gpu/drm/bridge/built-in.o CC lib/percpu-refcount.o CC drivers/base/firmware.o CC fs/no-block.o CC lib/percpu_ida.o LD drivers/gpu/drm/hisilicon/built-in.o CC lib/rhashtable.o LD drivers/gpu/drm/i2c/built-in.o CC lib/reciprocal_div.o CC lib/once.o CC lib/string_helpers.o CC drivers/base/init.o LD fs/devpts/built-in.o LD drivers/i2c/algos/built-in.o CC drivers/base/map.o LD fs/exofs/built-in.o LD drivers/gpu/drm/panel/built-in.o LD fs/notify/dnotify/built-in.o LD fs/notify/fanotify/built-in.o LD fs/quota/built-in.o LD kernel/irq/built-in.o CC drivers/base/attribute_container.o CC drivers/base/devres.o LD drivers/i2c/busses/built-in.o LD fs/notify/inotify/built-in.o CC fs/binfmt_elf.o CC drivers/base/transport_class.o LD kernel/locking/built-in.o LD drivers/gpu/drm/tilcdc/built-in.o CC kernel/time/ntp.o LD drivers/gpu/drm/omapdrm/displays/built-in.o CC fs/ramfs/inode.o CC drivers/base/topology.o LD drivers/gpu/drm/omapdrm/dss/built-in.o CC fs/ramfs/file-mmu.o LD fs/notify/built-in.o CC kernel/sched/clock.o CC kernel/sched/loadavg.o CC kernel/sched/cputime.o CC kernel/time/clocksource.o LD drivers/gpu/drm/omapdrm/built-in.o LD drivers/i2c/muxes/built-in.o LD drivers/idle/built-in.o CC kernel/sched/idle_task.o LD drivers/lguest/built-in.o CC lib/hexdump.o LD drivers/macintosh/built-in.o CC kernel/sched/fair.o CC drivers/base/container.o CC kernel/sched/rt.o LD drivers/i2c/built-in.o CC drivers/irqchip/irqchip.o LD drivers/gpu/drm/built-in.o CC drivers/base/property.o LD drivers/gpu/vga/built-in.o CC lib/kstrtox.o CC drivers/base/cacheinfo.o LD drivers/mfd/built-in.o CC drivers/base/dma-mapping.o CC lib/pci_iomap.o LD drivers/gpu/built-in.o LD drivers/mmc/built-in.o LD drivers/base/power/built-in.o CC kernel/time/jiffies.o LD drivers/net/built-in.o CC kernel/time/timer_list.o LD drivers/nfc/built-in.o CC lib/devres.o CC lib/hweight.o CC lib/iomap_copy.o CC kernel/sched/deadline.o CC lib/bitrev.o LD drivers/misc/cb710/built-in.o LD drivers/media/firewire/built-in.o HOSTCC lib/gen_crc32table CC kernel/sched/stop_task.o LD drivers/nvme/host/built-in.o LD mm/built-in.o CC kernel/sched/wait.o LD drivers/misc/eeprom/built-in.o CC kernel/sched/swait.o CC kernel/sched/completion.o LD drivers/nvme/target/built-in.o LD drivers/media/common/b2c2/built-in.o LD drivers/media/i2c/soc_camera/built-in.o LD drivers/misc/lis3lv02d/built-in.o CC lib/syscall.o CC lib/atomic64.o CC drivers/of/base.o LD drivers/media/common/saa7146/built-in.o LD drivers/media/mmc/siano/built-in.o LD fs/ramfs/ramfs.o CC kernel/time/timeconv.o LD drivers/nvme/built-in.o LD drivers/irqchip/built-in.o LD drivers/media/common/siano/built-in.o LD fs/ramfs/built-in.o LD drivers/media/common/v4l2-tpg/built-in.o LD drivers/media/i2c/built-in.o LD drivers/misc/ti-st/built-in.o LD drivers/media/mmc/built-in.o LD drivers/platform/built-in.o CC lib/strncpy_from_user.o CC lib/strnlen_user.o LD drivers/media/common/built-in.o LD drivers/power/built-in.o CC lib/argv_split.o LD drivers/pwm/built-in.o CC drivers/of/device.o CC kernel/time/timecounter.o LD drivers/misc/mic/bus/built-in.o CC drivers/pci/access.o CC kernel/sched/idle.o LD drivers/misc/mic/built-in.o LD drivers/media/spi/built-in.o CC drivers/pci/bus.o CC kernel/time/posix-clock.o LD drivers/media/platform/omap/built-in.o LD drivers/misc/built-in.o CC kernel/time/alarmtimer.o CC lib/chacha20.o LD drivers/usb/host/built-in.o LD drivers/media/rc/keymaps/built-in.o CC lib/ctype.o CC lib/cmdline.o CC kernel/time/tick-common.o LD drivers/media/tuners/built-in.o CC kernel/time/clockevents.o LD drivers/media/platform/built-in.o CC drivers/of/platform.o CC lib/dec_and_lock.o LD drivers/media/rc/built-in.o LD drivers/tty/ipwireless/built-in.o LD drivers/soc/bcm/built-in.o LD drivers/video/backlight/built-in.o LD drivers/usb/built-in.o CC lib/decompress.o CC lib/dma-noop.o CC lib/dump_stack.o CC lib/earlycpio.o CC drivers/pci/probe.o CC drivers/pci/host-bridge.o CC drivers/pci/remove.o LD drivers/video/fbdev/core/built-in.o LD drivers/soc/fsl/built-in.o CC drivers/of/fdt.o CC lib/extable.o LD drivers/tty/serial/built-in.o CC drivers/of/fdt_address.o CC lib/fdt.o CC drivers/of/address.o CC lib/fdt_empty_tree.o LD drivers/tty/vt/built-in.o CC lib/fdt_rw.o CC lib/fdt_ro.o CC lib/fdt_strerror.o LD drivers/soc/built-in.o CC lib/fdt_sw.o LD drivers/tty/built-in.o CC drivers/pci/pci.o CC lib/flex_proportions.o CC lib/fdt_wip.o LD drivers/media/pci/b2c2/built-in.o CC lib/int_sqrt.o CC drivers/of/irq.o CC lib/idr.o CC lib/ioremap.o CC lib/irq_regs.o LD drivers/video/fbdev/omap2/omapfb/displays/built-in.o CC lib/is_single_threaded.o CC lib/klist.o LD drivers/media/pci/dm1105/built-in.o LD drivers/media/pci/mantis/built-in.o CC lib/kobject.o LD drivers/media/pci/ddbridge/built-in.o CC drivers/pci/pci-driver.o CC lib/kobject_uevent.o LD drivers/media/pci/netup_unidvb/built-in.o LD drivers/video/fbdev/omap2/omapfb/dss/built-in.o CC lib/md5.o LD drivers/media/usb/b2c2/built-in.o CC lib/nmi_backtrace.o CC lib/plist.o CC lib/nodemask.o LD drivers/media/pci/pluto2/built-in.o CC lib/radix-tree.o LD drivers/media/pci/ngene/built-in.o CC lib/ratelimit.o CC lib/rbtree.o CC lib/seq_buf.o LD drivers/video/fbdev/omap2/omapfb/built-in.o CC lib/sha1.o LD drivers/base/built-in.o CC lib/show_mem.o CC lib/string.o LD drivers/media/pci/pt1/built-in.o LD fs/built-in.o CC lib/timerqueue.o CC lib/vsprintf.o LD drivers/media/pci/pt3/built-in.o LD drivers/media/usb/dvb-usb/built-in.o LD drivers/media/usb/dvb-usb-v2/built-in.o LD drivers/video/fbdev/omap2/built-in.o LD drivers/media/pci/saa7146/built-in.o CC drivers/pci/search.o CC drivers/of/of_pci.o LD drivers/media/pci/smipcie/built-in.o LD drivers/video/fbdev/built-in.o LD drivers/media/pci/ttpci/built-in.o CC lib/win_minmax.o LD drivers/media/usb/s2255/built-in.o LD drivers/media/usb/siano/built-in.o CC drivers/pci/rom.o LD drivers/video/built-in.o CC drivers/pci/pci-sysfs.o GEN lib/crc32table.h CC drivers/pci/irq.o CC drivers/pci/setup-res.o LD drivers/media/pci/built-in.o CC lib/crc32.o CC drivers/pci/vpd.o LD drivers/media/usb/stkwebcam/built-in.o CC drivers/of/of_pci_irq.o CC drivers/pci/setup-bus.o CC drivers/of/of_reserved_mem.o LD drivers/media/usb/ttusb-budget/built-in.o LD drivers/media/usb/ttusb-dec/built-in.o CC drivers/pci/syscall.o CC drivers/pci/vc.o LD drivers/media/usb/zr364xx/built-in.o CC drivers/pci/of.o LD kernel/sched/built-in.o LD drivers/media/usb/built-in.o LD drivers/pci/host/built-in.o LD drivers/media/built-in.o LD kernel/time/built-in.o LD kernel/built-in.o LD drivers/of/built-in.o AR lib/lib.a EXPORTS lib/lib-ksyms.o LD lib/built-in.o LD drivers/pci/built-in.o LD drivers/built-in.o 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 SORTEX vmlinux SYSMAP System.map /opt/cross/kisskb/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: 0:00:11.927912