Buildresult: linus/xtensa-allnoconfig/xtensa-gcc8 built on May 30 2017, 04:17

kisskb

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Status:	OK
Date/Time:	May 30 2017, 04:17
Duration:	0:00:13.898302
Builder:	ka2
Revision:	kthread: fix boot hang (regression) on MIPS/OpenRISC (`b0f5a8f32e8bbdaae1abb8abe2d3cbafaba57e08)`
Target:	linus/xtensa-allnoconfig/xtensa-gcc8
Branch:	linus
Compiler:	xtensa-gcc8 (xtensa-linux-gcc.br_real (Buildroot 2016.11-git-00613-ge98b4dd) 5.4.0)
Config:	allnoconfig (download)
Log:	Download original No warnings found in log. Full Log # git rev-parse -q --verify b0f5a8f32e8bbdaae1abb8abe2d3cbafaba57e08^{commit} b0f5a8f32e8bbdaae1abb8abe2d3cbafaba57e08 already have revision, skipping fetch # git checkout -q -f -B kisskb b0f5a8f32e8bbdaae1abb8abe2d3cbafaba57e08 # git clean -qxdf # git log -1 commit b0f5a8f32e8bbdaae1abb8abe2d3cbafaba57e08 Author: Vegard Nossum <vegard.nossum@oracle.com> Date: Mon May 29 09:22:07 2017 +0200 kthread: fix boot hang (regression) on MIPS/OpenRISC This fixes a regression in commit 4d6501dce079 where I didn't notice that MIPS and OpenRISC were reinitialising p->{set,clear}_child_tid to NULL after our initialisation in copy_process(). We can simply get rid of the arch-specific initialisation here since it is now always done in copy_process() before hitting copy_thread{,_tls}(). Review notes: - As far as I can tell, copy_process() is the only user of copy_thread_tls(), which is the only caller of copy_thread() for architectures that don't implement copy_thread_tls(). - After this patch, there is no arch-specific code touching p->set_child_tid or p->clear_child_tid whatsoever. - It may look like MIPS/OpenRISC wanted to always have these fields be NULL, but that's not true, as copy_process() would unconditionally set them again _after_ calling copy_thread_tls() before commit 4d6501dce079. Fixes: 4d6501dce079c1eb6bf0b1d8f528a5e81770109e ("kthread: Fix use-after-free if kthread fork fails") Reported-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Guenter Roeck <linux@roeck-us.net> # MIPS only Acked-by: Stafford Horne <shorne@gmail.com> Acked-by: Oleg Nesterov <oleg@redhat.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Cc: Jonas Bonn <jonas@southpole.se> Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Cc: openrisc@lists.librecores.org Cc: Jamie Iles <jamie.iles@oracle.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> # < /opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-gcc --version # < git log --format=%s --max-count=1 b0f5a8f32e8bbdaae1abb8abe2d3cbafaba57e08 # < make -j 48 ARCH=xtensa O=/home/kisskb/slave/build/linus_xtensa-allnoconfig_xtensa CROSS_COMPILE=/opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux- allnoconfig # make -j 48 ARCH=xtensa O=/home/kisskb/slave/build/linus_xtensa-allnoconfig_xtensa CROSS_COMPILE=/opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux- make[1]: Entering directory '/home/kisskb/slave/build/linus_xtensa-allnoconfig_xtensa' GEN ./Makefile scripts/kconfig/conf --silentoldconfig Kconfig CHK include/config/kernel.release GEN ./Makefile UPD include/config/kernel.release WRAP arch/xtensa/include/generated/asm/bitsperlong.h WRAP arch/xtensa/include/generated/asm/bug.h WRAP arch/xtensa/include/generated/asm/clkdev.h WRAP arch/xtensa/include/generated/asm/div64.h WRAP arch/xtensa/include/generated/asm/dma-contiguous.h WRAP arch/xtensa/include/generated/asm/emergency-restart.h WRAP arch/xtensa/include/generated/asm/errno.h WRAP arch/xtensa/include/generated/asm/exec.h WRAP arch/xtensa/include/generated/asm/extable.h WRAP arch/xtensa/include/generated/asm/fcntl.h WRAP arch/xtensa/include/generated/asm/hardirq.h WRAP arch/xtensa/include/generated/asm/ioctl.h WRAP arch/xtensa/include/generated/asm/irq_regs.h WRAP arch/xtensa/include/generated/asm/irq_work.h WRAP arch/xtensa/include/generated/asm/kdebug.h WRAP arch/xtensa/include/generated/asm/kmap_types.h WRAP arch/xtensa/include/generated/asm/kvm_para.h WRAP arch/xtensa/include/generated/asm/linkage.h WRAP arch/xtensa/include/generated/asm/local.h CHK include/generated/uapi/linux/version.h WRAP arch/xtensa/include/generated/asm/local64.h WRAP arch/xtensa/include/generated/asm/mcs_spinlock.h WRAP arch/xtensa/include/generated/asm/mm-arch-hooks.h WRAP arch/xtensa/include/generated/asm/percpu.h WRAP arch/xtensa/include/generated/asm/preempt.h UPD include/generated/uapi/linux/version.h WRAP arch/xtensa/include/generated/asm/resource.h WRAP arch/xtensa/include/generated/asm/rwsem.h WRAP arch/xtensa/include/generated/asm/sections.h WRAP arch/xtensa/include/generated/asm/siginfo.h WRAP arch/xtensa/include/generated/asm/statfs.h WRAP arch/xtensa/include/generated/asm/termios.h WRAP arch/xtensa/include/generated/asm/topology.h WRAP arch/xtensa/include/generated/asm/trace_clock.h WRAP arch/xtensa/include/generated/asm/word-at-a-time.h WRAP arch/xtensa/include/generated/asm/xor.h WRAP arch/xtensa/include/generated/asm/kprobes.h CHK include/generated/utsrelease.h UPD include/generated/utsrelease.h Using /home/kisskb/slave/src as source for kernel HOSTCC scripts/sortextable CC scripts/mod/empty.o HOSTCC scripts/mod/mk_elfconfig CC scripts/mod/devicetable-offsets.s CHK scripts/mod/devicetable-offsets.h UPD 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/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/xtensa/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 LD usr/built-in.o CC init/do_mounts.o CC init/init_task.o CC init/noinitramfs.o UPD include/generated/compile.h AS arch/xtensa/kernel/coprocessor.o AS arch/xtensa/kernel/align.o CC arch/xtensa/mm/init.o AS arch/xtensa/mm/misc.o CC init/version.o AS arch/xtensa/kernel/entry.o CC arch/xtensa/kernel/pci-dma.o CC arch/xtensa/kernel/irq.o CC arch/xtensa/platforms/iss/setup.o CC arch/xtensa/mm/mmu.o CC arch/xtensa/kernel/process.o CC arch/xtensa/mm/tlb.o CC arch/xtensa/mm/ioremap.o CC arch/xtensa/mm/cache.o CC arch/xtensa/kernel/platform.o CC arch/xtensa/kernel/ptrace.o CC arch/xtensa/mm/fault.o CC arch/xtensa/kernel/time.o CC arch/xtensa/kernel/setup.o CC arch/xtensa/kernel/stacktrace.o CC arch/xtensa/kernel/signal.o AS arch/xtensa/kernel/vectors.o CC arch/xtensa/kernel/traps.o LDS arch/xtensa/kernel/vmlinux.lds CC arch/xtensa/kernel/syscall.o AS arch/xtensa/kernel/head.o LD certs/built-in.o LD ipc/built-in.o LD arch/xtensa/mm/built-in.o LD arch/xtensa/platforms/iss/built-in.o CC security/commoncap.o CC security/min_addr.o CC kernel/fork.o CC kernel/cpu.o CC kernel/exit.o CC kernel/panic.o CC kernel/exec_domain.o CC kernel/softirq.o CC kernel/resource.o CC kernel/sysctl_binary.o CC kernel/capability.o CC kernel/task_work.o CC kernel/sys.o CC kernel/extable.o CC kernel/sysctl.o CC kernel/signal.o CC kernel/kmod.o CC kernel/nsproxy.o CC kernel/notifier.o CC kernel/workqueue.o CC kernel/params.o CC kernel/pid.o CC kernel/reboot.o CC kernel/user.o CC kernel/ksysfs.o CC kernel/cred.o CC kernel/async.o CC kernel/ptrace.o CC kernel/sys_ni.o CC kernel/kthread.o LD kernel/livepatch/built-in.o CC kernel/smpboot.o CC kernel/ucount.o CC kernel/range.o LD block/built-in.o CC mm/filemap.o CC mm/mempool.o LD crypto/built-in.o CC mm/oom_kill.o CC mm/maccess.o CC kernel/locking/mutex.o CC mm/page_alloc.o CC kernel/irq/irqdesc.o CC kernel/printk/printk.o CC fs/open.o CC kernel/locking/semaphore.o CC kernel/power/qos.o CC kernel/locking/rwsem.o LD arch/xtensa/kernel/built-in.o CC kernel/locking/percpu-rwsem.o CC kernel/rcu/update.o CC kernel/rcu/sync.o CC kernel/rcu/srcutiny.o LD sound/built-in.o CC kernel/irq/handle.o LD security/built-in.o CC kernel/irq/manage.o CC fs/read_write.o CC fs/file_table.o CC kernel/locking/rwsem-xadd.o CC mm/page-writeback.o CC mm/readahead.o CC kernel/up.o CC kernel/rcu/tiny.o CC mm/swap.o CC kernel/sched/core.o CC kernel/memremap.o LD firmware/built-in.o CC mm/truncate.o CC kernel/rcu/rcu_segcblist.o CC kernel/irq/spurious.o CC kernel/time/time.o CC kernel/time/timer.o CC kernel/time/hrtimer.o CC fs/super.o CC fs/char_dev.o CC kernel/time/timekeeping.o CC fs/stat.o CC kernel/irq/resend.o CC fs/exec.o LD init/mounts.o LD net/built-in.o CC fs/pipe.o LD init/built-in.o CC fs/namei.o CC kernel/irq/dummychip.o CC kernel/irq/chip.o CC fs/fcntl.o LD kernel/locking/built-in.o CC kernel/irq/devres.o CC fs/ioctl.o CC fs/readdir.o CC kernel/irq/irqdomain.o CC fs/select.o CC mm/vmscan.o CC mm/shmem.o CC mm/util.o LD kernel/power/built-in.o CC kernel/time/ntp.o CC mm/mmzone.o LD kernel/rcu/built-in.o CC kernel/time/clocksource.o CC mm/vmstat.o CC fs/dcache.o AS arch/xtensa/lib/checksum.o AS arch/xtensa/lib/memcopy.o LD drivers/amba/built-in.o LD drivers/auxdisplay/built-in.o CC fs/inode.o AS arch/xtensa/lib/memset.o AS arch/xtensa/lib/strncpy_user.o CC kernel/time/jiffies.o LD drivers/block/built-in.o AS arch/xtensa/lib/strnlen_user.o LD kernel/printk/built-in.o CC mm/backing-dev.o CC mm/mm_init.o CC kernel/time/timer_list.o CC mm/mmu_context.o LD virt/lib/built-in.o CC fs/attr.o AS arch/xtensa/lib/usercopy.o LD drivers/bus/built-in.o LD virt/built-in.o LD drivers/cdrom/built-in.o LD drivers/char/ipmi/built-in.o CC mm/percpu.o AR arch/xtensa/lib/lib.a CC kernel/time/timeconv.o CC mm/slab_common.o CC drivers/char/mem.o EXPORTS arch/xtensa/lib/lib-ksyms.o LD drivers/clocksource/built-in.o CC fs/bad_inode.o CC mm/compaction.o CC drivers/base/component.o CC drivers/base/bus.o CC fs/file.o CC drivers/base/core.o CC mm/vmacache.o LD drivers/firewire/built-in.o CC mm/swap_slots.o LD arch/xtensa/lib/built-in.o CC lib/lockref.o LD drivers/hwtracing/intel_th/built-in.o LD kernel/irq/built-in.o CC kernel/time/timecounter.o CC kernel/time/alarmtimer.o LD drivers/idle/built-in.o CC lib/bcd.o CC drivers/irqchip/irq-xtensa-pic.o CC drivers/clk/clk-devres.o CC drivers/clk/clk.o LD drivers/lguest/built-in.o CC drivers/clk/clk-fixed-rate.o CC drivers/clk/clk-fixed-factor.o CC drivers/clk/clk-divider.o LD drivers/macintosh/built-in.o LD drivers/mfd/built-in.o CC drivers/clk/clkdev.o LD drivers/mmc/built-in.o LD drivers/i2c/algos/built-in.o LD drivers/i2c/busses/built-in.o CC mm/list_lru.o CC fs/filesystems.o CC mm/workingset.o CC mm/interval_tree.o CC fs/seq_file.o CC fs/namespace.o CC fs/libfs.o CC fs/xattr.o LD drivers/i2c/muxes/built-in.o CC lib/div64.o LD drivers/gpu/vga/built-in.o LD drivers/net/phy/built-in.o LD drivers/firmware/broadcom/built-in.o LD drivers/i2c/built-in.o LD drivers/misc/cb710/built-in.o LD drivers/net/built-in.o CC mm/debug.o LD drivers/misc/eeprom/built-in.o LD drivers/gpu/drm/hisilicon/built-in.o LD drivers/gpu/drm/i2c/built-in.o LD drivers/firmware/meson/built-in.o LD drivers/gpu/drm/bridge/synopsys/built-in.o LD drivers/misc/lis3lv02d/built-in.o CC kernel/sched/loadavg.o CC kernel/sched/clock.o CC mm/gup.o CC kernel/sched/cputime.o CC kernel/sched/rt.o CC kernel/sched/fair.o CC kernel/time/posix-stubs.o CC kernel/sched/idle_task.o LD drivers/gpu/drm/bridge/built-in.o LD drivers/misc/ti-st/built-in.o LD drivers/misc/mic/bus/built-in.o CC drivers/char/random.o LD drivers/firmware/tegra/built-in.o CC drivers/char/misc.o CC mm/highmem.o LD drivers/char/agp/built-in.o LD drivers/gpu/drm/panel/built-in.o LD drivers/misc/mic/built-in.o LD drivers/media/common/b2c2/built-in.o CC mm/memory.o LD drivers/firmware/built-in.o LD drivers/nfc/built-in.o LD drivers/misc/built-in.o LD drivers/gpu/drm/omapdrm/displays/built-in.o CC mm/mincore.o CC lib/sort.o LD drivers/pci/dwc/built-in.o CC mm/mlock.o LD drivers/gpu/drm/tilcdc/built-in.o LD drivers/gpu/drm/omapdrm/dss/built-in.o LD drivers/nvme/host/built-in.o LD drivers/media/common/siano/built-in.o LD drivers/media/common/saa7146/built-in.o CC lib/parser.o CC drivers/base/dd.o CC lib/debug_locks.o LD drivers/media/common/v4l2-tpg/built-in.o LD drivers/nvme/target/built-in.o CC lib/random32.o CC lib/bust_spinlocks.o CC drivers/base/driver.o CC drivers/base/syscore.o LD drivers/gpu/drm/omapdrm/built-in.o CC kernel/sched/deadline.o LD drivers/irqchip/built-in.o CC drivers/base/class.o CC drivers/base/platform.o CC drivers/base/cpu.o CC drivers/base/firmware.o CC kernel/sched/stop_task.o LD drivers/gpu/drm/built-in.o LD drivers/media/common/built-in.o CC drivers/base/map.o CC drivers/base/init.o LD drivers/nvme/built-in.o LD drivers/platform/built-in.o CC kernel/time/clockevents.o CC kernel/time/tick-common.o LD drivers/power/built-in.o CC kernel/time/sched_clock.o CC mm/mmap.o CC lib/kasprintf.o CC mm/mprotect.o CC mm/mremap.o LD drivers/media/firewire/built-in.o CC mm/msync.o CC fs/fs-writeback.o CC fs/pnode.o CC fs/splice.o LD drivers/gpu/built-in.o CC fs/sync.o LD drivers/media/i2c/soc_camera/built-in.o LD drivers/media/spi/built-in.o CC drivers/base/devres.o LD drivers/media/tuners/built-in.o LD drivers/media/platform/omap/built-in.o CC kernel/sched/wait.o LD drivers/media/mmc/siano/built-in.o LD drivers/media/rc/keymaps/built-in.o CC drivers/base/attribute_container.o LD drivers/media/i2c/built-in.o LD drivers/media/platform/built-in.o CC kernel/sched/swait.o CC drivers/clk/clk-gate.o LD drivers/media/mmc/built-in.o LD drivers/ptp/built-in.o LD drivers/pwm/built-in.o LD drivers/media/rc/built-in.o CC drivers/clk/clk-multiplier.o CC drivers/clk/clk-composite.o CC drivers/clk/clk-mux.o CC drivers/clk/clk-fractional-divider.o CC lib/bitmap.o CC lib/scatterlist.o CC lib/gcd.o CC lib/lcm.o CC drivers/clk/clk-gpio.o LD drivers/clk/bcm/built-in.o CC fs/utimes.o CC drivers/base/transport_class.o LD drivers/clk/ti/built-in.o LD drivers/clk/mvebu/built-in.o LD drivers/media/usb/b2c2/built-in.o LD drivers/media/pci/b2c2/built-in.o LD drivers/media/pci/ddbridge/built-in.o CC lib/list_sort.o LD drivers/media/pci/dm1105/built-in.o CC lib/uuid.o CC lib/iov_iter.o LD drivers/media/pci/mantis/built-in.o CC fs/fs_struct.o CC fs/stack.o CC lib/flex_array.o LD drivers/media/pci/netup_unidvb/built-in.o CC mm/page_vma_mapped.o CC fs/statfs.o LD drivers/media/usb/dvb-usb-v2/built-in.o LD drivers/media/usb/dvb-usb/built-in.o CC mm/pagewalk.o LD drivers/media/pci/pluto2/built-in.o LD drivers/media/pci/ngene/built-in.o LD drivers/media/pci/pt3/built-in.o CC drivers/base/topology.o CC drivers/base/container.o LD drivers/media/pci/pt1/built-in.o CC drivers/base/property.o LD drivers/media/pci/saa7146/built-in.o CC drivers/base/cacheinfo.o LD drivers/media/pci/smipcie/built-in.o LD drivers/media/usb/siano/built-in.o LD drivers/media/usb/s2255/built-in.o LD drivers/media/usb/stkwebcam/built-in.o CC mm/pgtable-generic.o LD drivers/media/usb/ttusb-budget/built-in.o LD drivers/media/pci/ttpci/built-in.o CC kernel/sched/completion.o CC kernel/sched/idle.o CC mm/rmap.o CC mm/init-mm.o LD drivers/char/built-in.o CC mm/nobootmem.o LD drivers/media/usb/ttusb-dec/built-in.o LD drivers/media/usb/zr364xx/built-in.o CC mm/vmalloc.o CC lib/clz_ctz.o CC lib/bsearch.o CC fs/fs_pin.o LD drivers/soc/bcm/built-in.o LD drivers/media/pci/built-in.o LD drivers/base/test/built-in.o CC drivers/base/dma-mapping.o LD drivers/media/usb/built-in.o CC drivers/base/power/clock_ops.o CC lib/find_bit.o LD drivers/soc/fsl/built-in.o CC mm/memblock.o CC mm/dmapool.o LD drivers/tty/ipwireless/built-in.o LD drivers/soc/built-in.o CC lib/llist.o CC lib/memweight.o CC fs/nsfs.o LD drivers/tty/serial/built-in.o LD drivers/tty/vt/built-in.o CC fs/no-block.o LD drivers/video/backlight/built-in.o LD fs/devpts/built-in.o LD fs/exofs/built-in.o CC lib/kfifo.o LD fs/quota/built-in.o LD drivers/tty/built-in.o LD kernel/time/built-in.o CC mm/slub.o CC lib/rhashtable.o CC lib/percpu-refcount.o CC lib/percpu_ida.o CC fs/ramfs/inode.o CC lib/reciprocal_div.o CC lib/pci_iomap.o CC lib/kstrtox.o CC lib/once.o CC lib/usercopy.o CC lib/refcount.o CC lib/string_helpers.o CC lib/hexdump.o LD drivers/media/built-in.o CC lib/iomap_copy.o LD fs/notify/dnotify/built-in.o CC lib/devres.o LD drivers/video/fbdev/core/built-in.o LD fs/notify/inotify/built-in.o CC fs/ramfs/file-mmu.o CC lib/hweight.o CC lib/rational.o LD fs/notify/fanotify/built-in.o LD drivers/clk/built-in.o CC lib/chacha20.o CC lib/cmdline.o CC lib/ctype.o CC lib/argv_split.o CC lib/atomic64.o CC lib/dec_and_lock.o LD fs/notify/built-in.o CC lib/earlycpio.o CC lib/decompress.o CC lib/extable.o CC lib/flex_proportions.o CC lib/dump_stack.o CC lib/idr.o CC lib/ioremap.o CC lib/int_sqrt.o CC lib/irq_regs.o CC lib/is_single_threaded.o CC lib/klist.o CC lib/kobject_uevent.o CC lib/nmi_backtrace.o CC lib/kobject.o LD drivers/base/power/built-in.o CC lib/plist.o CC lib/nodemask.o CC lib/ratelimit.o LD drivers/video/fbdev/omap2/omapfb/displays/built-in.o CC lib/rbtree.o CC lib/radix-tree.o CC lib/sha1.o CC lib/seq_buf.o CC lib/show_mem.o LD drivers/video/fbdev/omap2/omapfb/dss/built-in.o CC lib/siphash.o CC lib/timerqueue.o CC lib/string.o CC lib/vsprintf.o CC lib/win_minmax.o LD drivers/video/fbdev/omap2/omapfb/built-in.o LD drivers/video/fbdev/omap2/built-in.o LD drivers/video/fbdev/built-in.o LD kernel/sched/built-in.o LD drivers/video/built-in.o LD kernel/built-in.o LD fs/ramfs/ramfs.o LD fs/ramfs/built-in.o LD drivers/base/built-in.o LD drivers/built-in.o LD fs/built-in.o LD mm/built-in.o AR lib/lib.a EXPORTS lib/lib-ksyms.o LD lib/built-in.o GEN .version CHK include/generated/compile.h UPD include/generated/compile.h CC init/version.o LD init/built-in.o LD vmlinux.o MODPOST vmlinux.o LD vmlinux SORTEX vmlinux SYSMAP System.map OBJCOPY vmlinux.bin COPY arch/xtensa/boot/lib/inffast.c COPY arch/xtensa/boot/lib/inflate.c COPY arch/xtensa/boot/lib/inftrees.c CC arch/xtensa/boot/lib/zmem.o CC arch/xtensa/boot/lib/inffast.o CC arch/xtensa/boot/lib/inflate.o CC arch/xtensa/boot/lib/inftrees.o AR arch/xtensa/boot/lib/lib.a EXPORTS arch/xtensa/boot/lib/lib-ksyms.o LD arch/xtensa/boot/lib/built-in.o AS arch/xtensa/boot/boot-elf/bootstrap.o LDS arch/xtensa/boot/boot-elf/boot.lds Kernel: arch/xtensa/boot/boot-elf/../Image.elf is ready make[1]: Leaving directory '/home/kisskb/slave/build/linus_xtensa-allnoconfig_xtensa' Completed OK # rm -rf /home/kisskb/slave/build/linus_xtensa-allnoconfig_xtensa # Build took: 0:00:13.898302

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