Buildresult: linus/CM-BF537U_defconfig/bfin built on Nov 18 2016, 06:24

kisskb

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Status:	OK
Date/Time:	Nov 18 2016, 06:24
Duration:	0:00:41.804513
Builder:	ka3
Revision:	mremap: fix race between mremap() and page cleanning (`5d1904204c99596b50a700f092fe49d78edba400)`
Target:	linus/CM-BF537U_defconfig/bfin
Branch:	linus
Compiler:	bfin (bfin-uclinux-gcc (GCC) 4.6.3)
Config:	CM-BF537U_defconfig (download)
Log:	Download original Possible warnings (11) <stdin>:1268:2: warning: #warning syscall accept4 not implemented [-Wcpp] <stdin>:1298:2: warning: #warning syscall userfaultfd not implemented [-Wcpp] <stdin>:1301:2: warning: #warning syscall membarrier not implemented [-Wcpp] <stdin>:1304:2: warning: #warning syscall mlock2 not implemented [-Wcpp] <stdin>:1307:2: warning: #warning syscall copy_file_range not implemented [-Wcpp] <stdin>:1310:2: warning: #warning syscall preadv2 not implemented [-Wcpp] <stdin>:1313:2: warning: #warning syscall pwritev2 not implemented [-Wcpp] <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] /home/kisskb/slave/src/kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] Full Log # git rev-parse -q --verify 5d1904204c99596b50a700f092fe49d78edba400^{commit} 5d1904204c99596b50a700f092fe49d78edba400 already have revision, skipping fetch # git checkout -q -f -B kisskb 5d1904204c99596b50a700f092fe49d78edba400 # git clean -qxdf # git log -1 commit 5d1904204c99596b50a700f092fe49d78edba400 Author: Aaron Lu <aaron.lu@intel.com> Date: Thu Nov 10 17:16:33 2016 +0800 mremap: fix race between mremap() and page cleanning Prior to 3.15, there was a race between zap_pte_range() and page_mkclean() where writes to a page could be lost. Dave Hansen discovered by inspection that there is a similar race between move_ptes() and page_mkclean(). We've been able to reproduce the issue by enlarging the race window with a msleep(), but have not been able to hit it without modifying the code. So, we think it's a real issue, but is difficult or impossible to hit in practice. The zap_pte_range() issue is fixed by commit 1cf35d47712d("mm: split 'tlb_flush_mmu()' into tlb flushing and memory freeing parts"). And this patch is to fix the race between page_mkclean() and mremap(). Here is one possible way to hit the race: suppose a process mmapped a file with READ \| WRITE and SHARED, it has two threads and they are bound to 2 different CPUs, e.g. CPU1 and CPU2. mmap returned X, then thread 1 did a write to addr X so that CPU1 now has a writable TLB for addr X on it. Thread 2 starts mremaping from addr X to Y while thread 1 cleaned the page and then did another write to the old addr X again. The 2nd write from thread 1 could succeed but the value will get lost. thread 1 thread 2 (bound to CPU1) (bound to CPU2) 1: write 1 to addr X to get a writeable TLB on this CPU 2: mremap starts 3: move_ptes emptied PTE for addr X and setup new PTE for addr Y and then dropped PTL for X and Y 4: page laundering for N by doing fadvise FADV_DONTNEED. When done, pageframe N is deemed clean. 5: write 2 to addr X 6: tlb flush for addr X 7: munmap (Y, pagesize) to make the page unmapped 8: fadvise with FADV_DONTNEED again to kick the page off the pagecache 9: pread the page from file to verify the value. If 1 is there, it means we have lost the written 2. the write may or may not cause segmentation fault, it depends on if the TLB is still on the CPU. Please note that this is only one specific way of how the race could occur, it didn't mean that the race could only occur in exact the above config, e.g. more than 2 threads could be involved and fadvise() could be done in another thread, etc. For anonymous pages, they could race between mremap() and page reclaim: THP: a huge PMD is moved by mremap to a new huge PMD, then the new huge PMD gets unmapped/splitted/pagedout before the flush tlb happened for the old huge PMD in move_page_tables() and we could still write data to it. The normal anonymous page has similar situation. To fix this, check for any dirty PTE in move_ptes()/move_huge_pmd() and if any, did the flush before dropping the PTL. If we did the flush for every move_ptes()/move_huge_pmd() call then we do not need to do the flush in move_pages_tables() for the whole range. But if we didn't, we still need to do the whole range flush. Alternatively, we can track which part of the range is flushed in move_ptes()/move_huge_pmd() and which didn't to avoid flushing the whole range in move_page_tables(). But that would require multiple tlb flushes for the different sub-ranges and should be less efficient than the single whole range flush. KBuild test on my Sandybridge desktop doesn't show any noticeable change. v4.9-rc4: real 5m14.048s user 32m19.800s sys 4m50.320s With this commit: real 5m13.888s user 32m19.330s sys 4m51.200s Reported-by: Dave Hansen <dave.hansen@intel.com> Signed-off-by: Aaron Lu <aaron.lu@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> # < /opt/cross/kisskb/gcc-4.6.3-nolibc/bfin-uclinux/bin/bfin-uclinux-gcc --version # < git log --format=%s --max-count=1 5d1904204c99596b50a700f092fe49d78edba400 # < make -j 10 ARCH=blackfin O=/home/kisskb/slave/build/linus_CM-BF537U_defconfig_bfin CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/bfin-uclinux/bin/bfin-uclinux- CM-BF537U_defconfig # make -j 10 ARCH=blackfin O=/home/kisskb/slave/build/linus_CM-BF537U_defconfig_bfin CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/bfin-uclinux/bin/bfin-uclinux- make[1]: Entering directory '/home/kisskb/slave/build/linus_CM-BF537U_defconfig_bfin' GEN ./Makefile scripts/kconfig/conf --silentoldconfig Kconfig CHK include/config/kernel.release GEN ./Makefile WRAP arch/blackfin/include/generated/asm/auxvec.h WRAP arch/blackfin/include/generated/asm/bitsperlong.h WRAP arch/blackfin/include/generated/asm/bugs.h WRAP arch/blackfin/include/generated/asm/cputime.h WRAP arch/blackfin/include/generated/asm/current.h WRAP arch/blackfin/include/generated/asm/device.h WRAP arch/blackfin/include/generated/asm/div64.h WRAP arch/blackfin/include/generated/asm/emergency-restart.h WRAP arch/blackfin/include/generated/asm/errno.h WRAP arch/blackfin/include/generated/asm/fb.h WRAP arch/blackfin/include/generated/asm/futex.h WRAP arch/blackfin/include/generated/asm/hw_irq.h WRAP arch/blackfin/include/generated/asm/ioctl.h WRAP arch/blackfin/include/generated/asm/ipcbuf.h WRAP arch/blackfin/include/generated/asm/irq_regs.h WRAP arch/blackfin/include/generated/asm/irq_work.h WRAP arch/blackfin/include/generated/asm/kdebug.h CHK include/generated/uapi/linux/version.h WRAP arch/blackfin/include/generated/asm/kmap_types.h WRAP arch/blackfin/include/generated/asm/kvm_para.h WRAP arch/blackfin/include/generated/asm/local.h WRAP arch/blackfin/include/generated/asm/local64.h WRAP arch/blackfin/include/generated/asm/mcs_spinlock.h WRAP arch/blackfin/include/generated/asm/mm-arch-hooks.h UPD include/generated/uapi/linux/version.h WRAP arch/blackfin/include/generated/asm/mman.h WRAP arch/blackfin/include/generated/asm/msgbuf.h WRAP arch/blackfin/include/generated/asm/mutex.h WRAP arch/blackfin/include/generated/asm/param.h WRAP arch/blackfin/include/generated/asm/percpu.h WRAP arch/blackfin/include/generated/asm/pgalloc.h WRAP arch/blackfin/include/generated/asm/preempt.h WRAP arch/blackfin/include/generated/asm/resource.h WRAP arch/blackfin/include/generated/asm/sembuf.h WRAP arch/blackfin/include/generated/asm/serial.h WRAP arch/blackfin/include/generated/asm/setup.h WRAP arch/blackfin/include/generated/asm/shmbuf.h WRAP arch/blackfin/include/generated/asm/shmparam.h WRAP arch/blackfin/include/generated/asm/socket.h WRAP arch/blackfin/include/generated/asm/sockios.h WRAP arch/blackfin/include/generated/asm/statfs.h WRAP arch/blackfin/include/generated/asm/termbits.h WRAP arch/blackfin/include/generated/asm/termios.h WRAP arch/blackfin/include/generated/asm/topology.h WRAP arch/blackfin/include/generated/asm/trace_clock.h WRAP arch/blackfin/include/generated/asm/types.h WRAP arch/blackfin/include/generated/asm/ucontext.h WRAP arch/blackfin/include/generated/asm/unaligned.h WRAP arch/blackfin/include/generated/asm/user.h WRAP arch/blackfin/include/generated/asm/word-at-a-time.h WRAP arch/blackfin/include/generated/asm/xor.h HOSTCC scripts/basic/bin2c UPD include/config/kernel.release Using /home/kisskb/slave/src as source for kernel CHK include/generated/utsrelease.h UPD include/generated/utsrelease.h HOSTCC scripts/kallsyms CC scripts/mod/empty.o HOSTCC scripts/mod/mk_elfconfig CC scripts/mod/devicetable-offsets.s GEN scripts/mod/devicetable-offsets.h CHK include/generated/timeconst.h MKELF scripts/mod/elfconfig.h CC kernel/bounds.s HOSTCC scripts/mod/modpost.o HOSTCC scripts/mod/file2alias.o HOSTCC scripts/mod/sumversion.o UPD include/generated/timeconst.h CHK include/generated/bounds.h UPD include/generated/bounds.h CC arch/blackfin/kernel/asm-offsets.s CHK include/generated/asm-offsets.h UPD include/generated/asm-offsets.h CALL /home/kisskb/slave/src/scripts/checksyscalls.sh HOSTLD scripts/mod/modpost <stdin>:1268:2: warning: #warning syscall accept4 not implemented [-Wcpp] <stdin>:1298:2: warning: #warning syscall userfaultfd not implemented [-Wcpp] <stdin>:1301:2: warning: #warning syscall membarrier not implemented [-Wcpp] <stdin>:1304:2: warning: #warning syscall mlock2 not implemented [-Wcpp] <stdin>:1307:2: warning: #warning syscall copy_file_range not implemented [-Wcpp] <stdin>:1310:2: warning: #warning syscall preadv2 not implemented [-Wcpp] <stdin>:1313:2: warning: #warning syscall pwritev2 not implemented [-Wcpp] <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp] HOSTCC usr/gen_init_cpio CC init/main.o CHK include/generated/compile.h CC init/do_mounts.o CC init/do_mounts_rd.o CC init/do_mounts_initrd.o CC init/initramfs.o CC init/calibrate.o CC arch/blackfin/mm/sram-alloc.o UPD include/generated/compile.h CC arch/blackfin/mm/isram-driver.o AS arch/blackfin/kernel/entry.o CC arch/blackfin/kernel/process.o CC init/init_task.o GEN usr/initramfs_data.cpio.lz4 CC arch/blackfin/mm/init.o AS usr/initramfs_data.o LD usr/built-in.o AS arch/blackfin/mach-common/cache.o CC arch/blackfin/mm/maccess.o CC arch/blackfin/mach-common/cache-c.o AS arch/blackfin/mach-common/entry.o CC arch/blackfin/kernel/bfin_ksyms.o CC init/version.o AS arch/blackfin/mach-common/head.o AS arch/blackfin/mach-common/interrupt.o CC arch/blackfin/mach-common/arch_checks.o CC arch/blackfin/mach-bf537/ints-priority.o CC arch/blackfin/mach-bf537/dma.o CC arch/blackfin/mach-common/ints-priority.o CC arch/blackfin/kernel/ptrace.o CC arch/blackfin/mach-common/pm.o LD arch/blackfin/mm/built-in.o CC arch/blackfin/mach-bf537/boards/cm_bf537u.o CC arch/blackfin/kernel/cplb-nompu/cplbinit.o CC arch/blackfin/kernel/setup.o CC arch/blackfin/kernel/cplb-nompu/cplbmgr.o LD arch/blackfin/mach-bf537/built-in.o CC arch/blackfin/kernel/signal.o AS arch/blackfin/mach-common/dpmc_modes.o LD init/mounts.o LD init/built-in.o LD certs/built-in.o CC kernel/fork.o CC mm/filemap.o CC kernel/exec_domain.o LD arch/blackfin/kernel/cplb-nompu/built-in.o CC ipc/util.o CC fs/open.o LD arch/blackfin/mach-common/built-in.o CC mm/mempool.o CC security/commoncap.o LD arch/blackfin/mach-bf537/boards/built-in.o CC crypto/api.o CC fs/read_write.o CC fs/file_table.o CC arch/blackfin/kernel/sys_bfin.o CC ipc/msgutil.o CC ipc/msg.o CC arch/blackfin/kernel/traps.o LD security/built-in.o CC ipc/sem.o CC crypto/cipher.o CC fs/super.o CC block/bio.o CC kernel/panic.o LD drivers/amba/built-in.o LD drivers/auxdisplay/built-in.o CC drivers/base/component.o CC arch/blackfin/kernel/irqchip.o CC drivers/base/core.o CC crypto/compress.o CC mm/oom_kill.o CC drivers/base/bus.o CC kernel/cpu.o CC arch/blackfin/kernel/dma-mapping.o CC kernel/exit.o CC crypto/memneq.o CC fs/char_dev.o CC arch/blackfin/kernel/flat.o CC ipc/shm.o CC fs/stat.o CC mm/maccess.o CC mm/page_alloc.o AS arch/blackfin/kernel/fixed_code.o CC arch/blackfin/kernel/reboot.o CC crypto/crypto_wq.o CC block/elevator.o CC block/blk-core.o CC arch/blackfin/kernel/bfin_dma.o CC drivers/base/dd.o CC arch/blackfin/kernel/exception.o CC fs/exec.o CC crypto/algapi.o CC block/blk-tag.o CC ipc/syscall.o CC kernel/softirq.o CC ipc/ipc_sysctl.o CC arch/blackfin/kernel/dumpstack.o CC drivers/base/syscore.o LD ipc/built-in.o CC arch/blackfin/kernel/time-ts.o CC drivers/block/brd.o CC drivers/base/driver.o CC drivers/base/class.o CC fs/pipe.o CC kernel/resource.o CC arch/blackfin/kernel/bfin_gpio.o CC crypto/scatterwalk.o CC fs/namei.o CC fs/fcntl.o CC drivers/base/platform.o LD drivers/block/built-in.o CC drivers/base/cpu.o CC crypto/proc.o CC block/blk-sysfs.o CC kernel/sysctl.o CC kernel/sysctl_binary.o CC kernel/capability.o LD sound/built-in.o CC arch/blackfin/kernel/cplbinfo.o CC mm/page-writeback.o LD firmware/built-in.o CC mm/readahead.o CC crypto/aead.o CC drivers/base/firmware.o CC arch/blackfin/kernel/module.o CC block/blk-flush.o CC drivers/base/init.o CC mm/swap.o CC mm/truncate.o CC drivers/base/map.o LD drivers/bus/built-in.o LD drivers/cdrom/built-in.o CC block/blk-settings.o CC arch/blackfin/kernel/early_printk.o CC crypto/ablkcipher.o CC crypto/blkcipher.o CC drivers/base/devres.o CC kernel/ptrace.o CC arch/blackfin/kernel/shadow_console.o CC kernel/user.o CC arch/blackfin/kernel/trace.o CC block/blk-ioc.o CC block/blk-map.o CC drivers/base/attribute_container.o CC fs/ioctl.o CC crypto/skcipher.o CC drivers/base/transport_class.o CC arch/blackfin/kernel/debug-mmrs.o CC mm/vmscan.o CC kernel/signal.o CC block/blk-exec.o CC drivers/base/topology.o CC fs/readdir.o CC fs/select.o CC fs/dcache.o CC kernel/sys.o CC crypto/ahash.o CC drivers/base/container.o CC block/blk-merge.o CC block/blk-softirq.o CC drivers/base/property.o LDS arch/blackfin/kernel/vmlinux.lds LD arch/blackfin/kernel/built-in.o CC block/blk-timeout.o CC block/blk-lib.o CC crypto/shash.o CC mm/shmem.o CC kernel/kmod.o CC drivers/base/cacheinfo.o CC net/socket.o CC lib/lockref.o CC mm/util.o CC arch/blackfin/lib/ashldi3.o CC mm/mmzone.o CC block/blk-mq.o CC arch/blackfin/lib/ashrdi3.o CC fs/inode.o AS arch/blackfin/lib/divsi3.o CC crypto/akcipher.o CC lib/bcd.o AS arch/blackfin/lib/ins.o CC arch/blackfin/lib/lshrdi3.o CC lib/div64.o AS arch/blackfin/lib/memchr.o AS arch/blackfin/lib/memcmp.o AS arch/blackfin/lib/memcpy.o AS arch/blackfin/lib/memmove.o CC kernel/workqueue.o AS arch/blackfin/lib/memset.o CC lib/sort.o AS arch/blackfin/lib/modsi3.o AS arch/blackfin/lib/muldi3.o AS arch/blackfin/lib/outs.o AS arch/blackfin/lib/smulsi3_highpart.o CC drivers/base/dma-mapping.o CC drivers/base/power/sysfs.o AS arch/blackfin/lib/strcmp.o AS arch/blackfin/lib/strcpy.o AS arch/blackfin/lib/strncmp.o AS arch/blackfin/lib/strncpy.o AS arch/blackfin/lib/udivsi3.o AS arch/blackfin/lib/umodsi3.o AS arch/blackfin/lib/umulsi3_highpart.o AR arch/blackfin/lib/lib.a EXPORTS arch/blackfin/lib/lib-ksyms.o LD arch/blackfin/lib/built-in.o CC kernel/pid.o CC lib/parser.o CC crypto/kpp.o CC mm/vmstat.o CC crypto/algboss.o CC drivers/base/power/generic_ops.o CC lib/halfmd4.o CC lib/debug_locks.o LD virt/lib/built-in.o CC lib/random32.o LD virt/built-in.o CC lib/bust_spinlocks.o CC mm/backing-dev.o CC fs/attr.o CC fs/bad_inode.o CC drivers/base/power/common.o CC crypto/testmgr.o CC crypto/crypto_null.o CC lib/kasprintf.o LD net/802/built-in.o CC net/core/sock.o CC block/blk-mq-tag.o CC block/blk-mq-sysfs.o CC lib/bitmap.o CC drivers/base/power/qos.o CC fs/file.o CC drivers/base/power/runtime.o CC crypto/aes_generic.o CC mm/mm_init.o CC net/core/request_sock.o CC block/blk-mq-cpumap.o CC mm/mmu_context.o CC kernel/task_work.o CC kernel/extable.o CC lib/scatterlist.o CC fs/filesystems.o CC mm/percpu.o CC drivers/base/power/wakeirq.o CC block/ioctl.o CC drivers/char/mem.o CC kernel/params.o CC drivers/char/random.o CC drivers/base/power/main.o CC lib/gcd.o CC fs/namespace.o CC crypto/rng.o CC lib/lcm.o CC lib/list_sort.o CC lib/uuid.o CC lib/flex_array.o CC net/ethernet/eth.o CC block/genhd.o CC kernel/kthread.o CC net/core/skbuff.o CC [M] crypto/echainiv.o CC lib/iov_iter.o CC mm/slab_common.o CC drivers/char/misc.o CC kernel/sys_ni.o CC drivers/base/power/wakeup.o CC kernel/nsproxy.o CC [M] crypto/hmac.o LD net/ethernet/built-in.o CC lib/clz_ctz.o LD drivers/char/agp/built-in.o LD drivers/char/built-in.o CC lib/bsearch.o CC drivers/base/firmware_class.o CC mm/compaction.o CC lib/find_bit.o CC block/scsi_ioctl.o CC lib/llist.o CC net/core/datagram.o CC kernel/notifier.o CC [M] crypto/sha256_generic.o CC mm/vmacache.o CC fs/seq_file.o LD drivers/base/power/built-in.o CC mm/interval_tree.o CC drivers/base/module.o CC mm/list_lru.o CC kernel/ksysfs.o CC block/partition-generic.o CC lib/memweight.o CC lib/kfifo.o LD drivers/base/built-in.o LD drivers/char/ipmi/built-in.o LD drivers/clk/bcm/built-in.o LD drivers/clk/mvebu/built-in.o LD drivers/clk/ti/built-in.o LD drivers/clk/built-in.o LD drivers/clocksource/built-in.o CC kernel/cred.o LD drivers/crypto/built-in.o LD drivers/firewire/built-in.o LD drivers/firmware/broadcom/built-in.o LD drivers/firmware/meson/built-in.o LD drivers/firmware/built-in.o CC mm/workingset.o CC drivers/gpio/devres.o CC [M] crypto/drbg.o CC mm/debug.o CC fs/xattr.o LD drivers/gpu/drm/bridge/built-in.o LD drivers/gpu/drm/hisilicon/built-in.o LD drivers/gpu/drm/i2c/built-in.o CC lib/percpu-refcount.o LD drivers/gpu/drm/omapdrm/displays/built-in.o CC drivers/gpio/gpiolib.o LD drivers/gpu/drm/omapdrm/dss/built-in.o LD drivers/gpu/drm/omapdrm/built-in.o LD drivers/gpu/drm/panel/built-in.o LD drivers/gpu/drm/tilcdc/built-in.o LD drivers/gpu/drm/built-in.o CC block/ioprio.o CC block/badblocks.o LD drivers/gpu/vga/built-in.o LD drivers/gpu/built-in.o CC mm/nommu.o CC block/partitions/check.o CC kernel/reboot.o CC lib/percpu_ida.o CC [M] crypto/jitterentropy.o CC net/core/stream.o CC [M] crypto/jitterentropy-kcapi.o CC block/partitions/msdos.o CC fs/libfs.o CC block/partitions/efi.o LD crypto/crypto.o CC kernel/async.o CC block/noop-iosched.o CC lib/rhashtable.o CC kernel/range.o LD crypto/crypto_algapi.o LD crypto/crypto_blkcipher.o LD crypto/crypto_hash.o LD crypto/cryptomgr.o LD [M] crypto/jitterentropy_rng.o LD crypto/built-in.o CC net/core/scm.o CC net/core/gen_stats.o CC kernel/smpboot.o CC mm/init-mm.o CC net/core/gen_estimator.o CC net/ipv4/route.o CC mm/bootmem.o LD block/partitions/built-in.o CC block/cfq-iosched.o CC fs/fs-writeback.o CC drivers/gpio/gpiolib-legacy.o CC kernel/ucount.o CC lib/reciprocal_div.o CC lib/once.o CC kernel/groups.o CC net/core/net_namespace.o CC drivers/gpio/gpiolib-sysfs.o CC fs/pnode.o CC net/core/secure_seq.o CC mm/fadvise.o CC lib/string_helpers.o CC net/core/flow_dissector.o CC kernel/bpf/core.o CC lib/hexdump.o LD drivers/gpio/built-in.o CC drivers/hwmon/hwmon.o CC fs/splice.o CC mm/dmapool.o CC lib/kstrtox.o CC lib/iomap_copy.o CC mm/slab.o CC net/ipv4/inetpeer.o CC net/ipv4/protocol.o LD drivers/hwmon/built-in.o LD drivers/hwtracing/intel_th/built-in.o LD drivers/i2c/algos/built-in.o LD drivers/i2c/busses/built-in.o LD drivers/i2c/muxes/built-in.o LD drivers/i2c/built-in.o LD drivers/idle/built-in.o CC net/ipv4/ip_input.o LD drivers/irqchip/built-in.o CC lib/devres.o LD drivers/lguest/built-in.o LD drivers/macintosh/built-in.o LD drivers/media/common/b2c2/built-in.o LD drivers/media/common/saa7146/built-in.o LD drivers/media/common/siano/built-in.o LD drivers/media/common/v4l2-tpg/built-in.o LD drivers/media/common/built-in.o LD drivers/media/firewire/built-in.o LD drivers/media/i2c/soc_camera/built-in.o LD drivers/media/i2c/built-in.o LD drivers/media/mmc/siano/built-in.o LD drivers/media/mmc/built-in.o LD drivers/media/pci/b2c2/built-in.o LD drivers/media/pci/ddbridge/built-in.o LD drivers/media/pci/dm1105/built-in.o LD drivers/media/pci/mantis/built-in.o LD drivers/media/pci/netup_unidvb/built-in.o LD drivers/media/pci/ngene/built-in.o LD drivers/media/pci/pluto2/built-in.o LD drivers/media/pci/pt1/built-in.o CC net/core/sysctl_net_core.o LD drivers/media/pci/pt3/built-in.o LD drivers/media/pci/saa7146/built-in.o LD drivers/media/pci/smipcie/built-in.o LD drivers/media/pci/ttpci/built-in.o LD drivers/media/pci/built-in.o CC lib/bitrev.o CC net/core/dev.o LD drivers/media/platform/blackfin/built-in.o LD drivers/media/platform/omap/built-in.o LD drivers/media/platform/built-in.o LD drivers/media/rc/keymaps/built-in.o LD drivers/media/rc/built-in.o LD drivers/media/spi/built-in.o CC fs/sync.o LD drivers/media/tuners/built-in.o LD block/built-in.o LD drivers/media/usb/b2c2/built-in.o LD drivers/media/usb/dvb-usb/built-in.o LD kernel/bpf/built-in.o CC lib/crc-itu-t.o LD drivers/media/usb/dvb-usb-v2/built-in.o CC kernel/irq/irqdesc.o LD kernel/livepatch/built-in.o LD drivers/media/usb/s2255/built-in.o LD drivers/media/usb/siano/built-in.o CC net/core/ethtool.o CC net/core/dev_addr_lists.o LD drivers/media/usb/stkwebcam/built-in.o LD drivers/media/usb/ttusb-budget/built-in.o LD drivers/media/usb/ttusb-dec/built-in.o LD drivers/media/usb/zr364xx/built-in.o LD drivers/media/usb/built-in.o LD drivers/media/built-in.o LD drivers/mfd/built-in.o LD drivers/misc/cb710/built-in.o LD drivers/misc/eeprom/built-in.o HOSTCC lib/gen_crc32table LD drivers/misc/lis3lv02d/built-in.o LD drivers/misc/mic/bus/built-in.o LD drivers/misc/mic/built-in.o LD drivers/misc/ti-st/built-in.o LD drivers/misc/built-in.o CC drivers/mmc/card/block.o CC net/ipv4/ip_fragment.o CC lib/crc7.o CC lib/lz4/lz4_decompress.o CC kernel/irq/handle.o LD mm/built-in.o CC drivers/mmc/card/queue.o CC fs/utimes.o CC kernel/irq/manage.o LD lib/lz4/built-in.o CC net/core/dst.o CC lib/lzo/lzo1x_decompress_safe.o CC drivers/mmc/core/core.o CC fs/stack.o LD lib/lzo/lzo_decompress.o LD lib/lzo/built-in.o CC lib/xz/xz_dec_syms.o CC lib/xz/xz_dec_stream.o CC fs/fs_struct.o CC kernel/irq/spurious.o CC net/ipv4/ip_forward.o CC net/ipv4/ip_options.o CC fs/statfs.o CC kernel/irq/resend.o CC lib/zlib_deflate/deflate.o CC lib/xz/xz_dec_lzma2.o CC net/ipv4/ip_output.o LD drivers/mmc/card/mmc_block.o LD drivers/mmc/card/built-in.o CC drivers/mtd/mtdcore.o CC kernel/irq/chip.o CC fs/fs_pin.o CC drivers/net/Space.o CC lib/zlib_deflate/deftree.o CC drivers/mmc/core/bus.o CC lib/xz/xz_dec_bcj.o CC fs/nsfs.o CC lib/zlib_inflate/inffast.o CC kernel/irq/dummychip.o CC lib/zlib_inflate/inflate.o CC drivers/net/loopback.o CC drivers/mmc/core/host.o CC fs/buffer.o LD lib/xz/xz_dec.o LD lib/xz/built-in.o CC fs/block_dev.o CC kernel/irq/devres.o CC drivers/mtd/mtdsuper.o CC lib/zlib_deflate/deflate_syms.o LD lib/zlib_deflate/zlib_deflate.o LD lib/zlib_deflate/built-in.o CC drivers/mtd/mtdconcat.o CC kernel/irq/autoprobe.o CC drivers/mmc/core/mmc.o CC kernel/irq/proc.o CC lib/zlib_inflate/infutil.o CC net/ipv4/ip_sockglue.o LD drivers/net/ethernet/8390/built-in.o LD drivers/net/ethernet/amazon/built-in.o LD drivers/net/ethernet/arc/built-in.o LD drivers/net/ethernet/broadcom/built-in.o LD drivers/net/ethernet/cadence/built-in.o LD drivers/net/ethernet/ezchip/built-in.o LD drivers/net/ethernet/i825xx/built-in.o LD drivers/net/ethernet/intel/built-in.o LD drivers/net/ethernet/marvell/built-in.o LD drivers/net/ethernet/micrel/built-in.o LD drivers/net/ethernet/microchip/built-in.o LD drivers/net/ethernet/natsemi/built-in.o CC lib/zlib_inflate/inftrees.o LD drivers/net/ethernet/netronome/built-in.o LD drivers/net/ethernet/qualcomm/emac/built-in.o LD drivers/net/ethernet/qualcomm/built-in.o CC net/ipv4/inet_hashtables.o LD drivers/net/ethernet/renesas/built-in.o LD drivers/net/ethernet/rocker/built-in.o LD drivers/net/ethernet/samsung/built-in.o LD drivers/net/ethernet/seeq/built-in.o LD drivers/net/ethernet/smsc/built-in.o CC kernel/irq/pm.o LD drivers/net/ethernet/stmicro/built-in.o CC net/core/netevent.o LD drivers/net/ethernet/synopsys/built-in.o LD drivers/net/ethernet/via/built-in.o CC lib/zlib_inflate/inflate_syms.o LD drivers/net/ethernet/wiznet/built-in.o LD drivers/net/ethernet/built-in.o LD drivers/net/built-in.o CC net/ipv6/addrconf_core.o CC net/netlink/af_netlink.o LD lib/zlib_inflate/zlib_inflate.o LD lib/zlib_inflate/built-in.o CC lib/syscall.o LD kernel/irq/built-in.o CC kernel/locking/mutex.o CC lib/nlattr.o CC net/core/neighbour.o CC drivers/mmc/core/mmc_ops.o CC drivers/mtd/mtdpart.o CC net/ipv6/exthdrs_core.o CC kernel/locking/semaphore.o CC kernel/locking/rwsem.o CC net/ipv4/inet_timewait_sock.o CC lib/checksum.o CC net/ipv4/inet_connection_sock.o CC fs/direct-io.o CC drivers/mmc/core/sd.o CC kernel/locking/percpu-rwsem.o CC lib/atomic64.o CC net/ipv6/ip6_checksum.o CC kernel/locking/rwsem-spinlock.o CC lib/dynamic_queue_limits.o CC drivers/mtd/mtdchar.o CC lib/net_utils.o LD drivers/mmc/host/built-in.o CC [M] drivers/mmc/host/mmc_spi.o LD kernel/locking/built-in.o CC kernel/power/qos.o CC drivers/mmc/core/sd_ops.o CC lib/sbitmap.o CC net/netlink/genetlink.o CC net/ipv6/ip6_icmp.o CC net/ipv4/tcp.o CC drivers/mmc/core/sdio.o CC kernel/power/main.o CC lib/argv_split.o CC drivers/mtd/cmdlinepart.o CC net/ipv6/output_core.o CC fs/mpage.o CC net/core/rtnetlink.o CC lib/bug.o CC drivers/mtd/mtd_blkdevs.o CC kernel/power/process.o CC lib/chacha20.o CC drivers/mmc/core/sdio_ops.o LD net/netlink/built-in.o CC drivers/mmc/core/sdio_bus.o CC drivers/mtd/mtdblock.o CC net/ipv6/protocol.o CC lib/cmdline.o CC lib/ctype.o CC kernel/printk/printk.o CC kernel/power/suspend.o CC lib/dec_and_lock.o CC fs/proc_namespace.o CC lib/decompress.o CC lib/decompress_bunzip2.o CC kernel/printk/nmi.o CC drivers/mmc/core/sdio_cis.o CC drivers/mtd/chips/chipreg.o CC drivers/mtd/chips/cfi_probe.o CC net/ipv6/ip6_offload.o CC fs/configfs/inode.o LD kernel/power/built-in.o CC lib/decompress_unlz4.o CC fs/debugfs/inode.o CC fs/debugfs/file.o CC drivers/mmc/core/sdio_io.o CC drivers/mtd/chips/cfi_util.o CC lib/decompress_unlzma.o CC fs/configfs/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 net/ipv4/tcp_input.o CC drivers/mmc/core/sdio_irq.o CC net/ipv6/tcpv6_offload.o CC lib/decompress_unlzo.o CC drivers/mtd/chips/cfi_cmdset_0001.o LD fs/debugfs/debugfs.o LD fs/debugfs/built-in.o CC net/core/utils.o CC lib/decompress_unxz.o CC net/core/link_watch.o CC drivers/mmc/core/quirks.o CC fs/configfs/dir.o LD kernel/printk/built-in.o CC net/ipv6/exthdrs_offload.o CC kernel/rcu/update.o CC lib/dma-noop.o CC drivers/mmc/core/slot-gpio.o CC kernel/rcu/sync.o CC kernel/sched/core.o LD net/ipv6/built-in.o LD drivers/nfc/built-in.o CC net/core/filter.o CC lib/dump_stack.o CC drivers/mmc/core/debugfs.o CC lib/earlycpio.o CC kernel/rcu/srcu.o CC kernel/rcu/tiny.o CC fs/configfs/symlink.o CC lib/extable.o CC lib/flex_proportions.o CC drivers/mtd/chips/gen_probe.o CC net/packet/af_packet.o LD drivers/mmc/core/mmc_core.o LD drivers/mmc/core/built-in.o LD drivers/mmc/built-in.o LD drivers/mtd/devices/built-in.o CC lib/idr.o LD kernel/rcu/built-in.o LD drivers/mtd/lpddr/built-in.o CC net/ipv4/tcp_output.o CC fs/devpts/inode.o CC drivers/mtd/maps/map_funcs.o CC fs/configfs/mount.o CC drivers/mtd/maps/gpio-addr-flash.o CC drivers/mtd/chips/map_ram.o CC fs/configfs/item.o LD fs/devpts/devpts.o LD fs/devpts/built-in.o LD drivers/nvme/host/built-in.o LD drivers/nvme/target/built-in.o LD drivers/nvme/built-in.o CC [M] drivers/mtd/chips/map_rom.o CC net/ipv4/tcp_timer.o CC lib/int_sqrt.o LD drivers/mtd/maps/built-in.o CC net/ipv4/tcp_ipv4.o CC lib/irq_regs.o LD fs/configfs/configfs.o LD fs/configfs/built-in.o LD fs/exofs/built-in.o CC fs/exportfs/expfs.o CC lib/is_single_threaded.o CC kernel/sched/loadavg.o LD drivers/mtd/chips/built-in.o LD drivers/mtd/nand/built-in.o LD drivers/mtd/onenand/built-in.o LD drivers/mtd/tests/built-in.o LD drivers/mtd/mtd.o LD drivers/mtd/built-in.o LD drivers/platform/built-in.o LD drivers/power/built-in.o LD drivers/pwm/built-in.o CC lib/klist.o LD drivers/soc/bcm/built-in.o LD drivers/soc/fsl/built-in.o LD drivers/soc/built-in.o CC drivers/spi/spi.o LD fs/exportfs/exportfs.o LD fs/exportfs/built-in.o CC kernel/sched/clock.o CC net/core/sock_diag.o CC fs/ext2/balloc.o CC lib/kobject.o CC kernel/sched/cputime.o CC kernel/sched/idle_task.o CC net/ipv4/tcp_minisocks.o CC net/core/dev_ioctl.o CC lib/kobject_uevent.o CC kernel/sched/fair.o CC fs/ext2/dir.o CC net/core/tso.o LD net/packet/built-in.o CC net/core/sock_reuseport.o CC net/core/net-sysfs.o CC net/core/net-procfs.o CC net/ipv4/tcp_cong.o CC lib/md5.o CC fs/ext2/file.o CC kernel/sched/rt.o CC drivers/spi/spi-bfin5xx.o CC lib/nmi_backtrace.o CC fs/ext2/ialloc.o CC lib/nodemask.o CC lib/plist.o CC lib/radix-tree.o CC fs/fat/cache.o CC fs/jffs2/compr.o CC kernel/time/time.o CC kernel/time/timer.o CC kernel/sched/deadline.o LD net/core/built-in.o CC kernel/sched/stop_task.o CC net/ipv4/tcp_metrics.o CC fs/ext2/inode.o CC fs/jffs2/dir.o CC fs/fat/dir.o LD drivers/spi/built-in.o CC drivers/tty/tty_io.o CC drivers/tty/n_tty.o CC lib/ratelimit.o CC kernel/sched/wait.o CC drivers/tty/tty_ioctl.o CC kernel/time/hrtimer.o CC lib/rbtree.o CC fs/jffs2/file.o CC kernel/sched/swait.o CC lib/seq_buf.o CC fs/ext2/ioctl.o CC fs/ext2/namei.o CC fs/jffs2/ioctl.o CC kernel/sched/completion.o CC net/ipv4/tcp_fastopen.o CC kernel/time/itimer.o CC fs/fat/fatent.o CC lib/sha1.o CC kernel/freezer.o CC fs/jffs2/nodelist.o CC kernel/sched/idle.o CC fs/ext2/super.o CC kernel/up.o CC kernel/time/posix-timers.o CC drivers/tty/tty_ldisc.o CC kernel/time/posix-cpu-timers.o CC net/sched/sch_generic.o CC lib/show_mem.o CC kernel/sched/debug.o CC fs/jffs2/malloc.o CC fs/fat/file.o CC net/ipv4/tcp_rate.o CC lib/string.o CC drivers/tty/tty_buffer.o CC fs/jffs2/read.o CC lib/timerqueue.o CC fs/ext2/symlink.o CC fs/ext2/xattr.o CC lib/vsprintf.o CC fs/fat/inode.o CC kernel/time/timekeeping.o CC net/ipv4/tcp_recovery.o CC lib/win_minmax.o LD kernel/sched/built-in.o CC [M] lib/crc-ccitt.o CC net/sched/sch_mq.o CC fs/jffs2/nodemgmt.o CC drivers/tty/tty_port.o CC net/ipv4/tcp_offload.o CC fs/jffs2/readinode.o CC fs/ext2/xattr_user.o CC fs/ext2/xattr_trusted.o CC drivers/tty/tty_mutex.o CC drivers/tty/tty_ldsem.o LD net/sched/built-in.o CC drivers/tty/pty.o LD drivers/tty/ipwireless/built-in.o CC fs/fat/misc.o LD fs/ext2/ext2.o LD fs/ext2/built-in.o CC net/unix/af_unix.o CC net/sysctl_net.o CC net/ipv4/datagram.o CC fs/kernfs/mount.o CC fs/kernfs/inode.o CC fs/fat/nfs.o CC fs/jffs2/write.o CC drivers/tty/serial/serial_core.o GEN lib/crc32table.h AR lib/lib.a CC lib/crc32.o CC drivers/tty/serial/bfin_uart.o CC net/unix/garbage.o CC fs/kernfs/dir.o CC fs/fat/namei_vfat.o CC net/ipv4/raw.o CC kernel/time/ntp.o CC fs/jffs2/scan.o EXPORTS lib/lib-ksyms.o LD lib/built-in.o CC kernel/time/clocksource.o CC kernel/time/jiffies.o CC kernel/time/timer_list.o CC fs/kernfs/file.o CC fs/kernfs/symlink.o CC fs/fat/namei_msdos.o CC net/ipv4/udp.o CC net/unix/sysctl_net_unix.o CC fs/jffs2/gc.o LD drivers/tty/vt/built-in.o CC fs/jffs2/symlink.o LD fs/fat/fat.o CC fs/jffs2/build.o LD drivers/tty/serial/built-in.o LD drivers/tty/built-in.o CC fs/nls/nls_base.o CC kernel/time/timeconv.o CC drivers/usb/common/common.o LD fs/kernfs/built-in.o CC fs/nls/nls_cp437.o CC net/ipv4/udplite.o CC kernel/time/timecounter.o CC kernel/time/posix-clock.o LD fs/fat/vfat.o CC fs/jffs2/erase.o LD fs/fat/msdos.o LD fs/fat/built-in.o CC fs/jffs2/background.o LD drivers/usb/common/usb-common.o LD drivers/usb/common/built-in.o LD net/unix/unix.o CC drivers/usb/gadget/usbstring.o LD net/unix/built-in.o CC kernel/module.o CC fs/nls/nls_iso8859-1.o CC fs/jffs2/fs.o LD fs/nls/built-in.o LD drivers/video/backlight/built-in.o LD drivers/video/fbdev/core/built-in.o CC net/ipv4/udp_offload.o LD drivers/video/fbdev/omap2/omapfb/displays/built-in.o LD drivers/video/fbdev/omap2/omapfb/dss/built-in.o LD drivers/video/fbdev/omap2/omapfb/built-in.o CC drivers/usb/gadget/config.o LD drivers/video/fbdev/omap2/built-in.o LD drivers/video/fbdev/built-in.o CC kernel/time/alarmtimer.o LD drivers/video/built-in.o CC drivers/usb/gadget/epautoconf.o CC kernel/time/clockevents.o CC drivers/usb/gadget/composite.o CC kernel/time/tick-common.o CC drivers/usb/gadget/functions.o CC fs/jffs2/writev.o CC fs/jffs2/super.o CC fs/jffs2/debug.o CC kernel/time/timekeeping_debug.o CC net/ipv4/arp.o CC drivers/usb/gadget/configfs.o CC fs/jffs2/wbuf.o CC net/ipv4/icmp.o LD kernel/time/built-in.o CC fs/notify/fsnotify.o LD fs/quota/built-in.o CC fs/ramfs/inode.o CC fs/proc/nommu.o CC fs/sysfs/file.o CC kernel/kallsyms.o CC drivers/usb/gadget/u_f.o CC fs/notify/notification.o CC fs/proc/task_nommu.o CC fs/sysfs/dir.o CC fs/ramfs/file-nommu.o CC fs/notify/group.o CC fs/jffs2/compr_rtime.o CC drivers/usb/gadget/function/u_ether.o CC drivers/usb/gadget/function/f_ecm.o CC fs/sysfs/symlink.o CC drivers/usb/gadget/function/f_subset.o CC net/ipv4/devinet.o CC fs/proc/inode.o GZIP kernel/config_data.gz CC kernel/utsname_sysctl.o CC fs/jffs2/compr_zlib.o CC fs/notify/inode_mark.o LD fs/ramfs/ramfs.o LD fs/ramfs/built-in.o CC fs/notify/mark.o CC kernel/elfcore.o CC fs/sysfs/mount.o LD fs/jffs2/jffs2.o LD fs/jffs2/built-in.o CC kernel/irq_work.o CC kernel/membarrier.o CC fs/proc/root.o CC fs/sysfs/group.o CC net/ipv4/af_inet.o CC kernel/memremap.o CC drivers/usb/gadget/function/f_rndis.o CC fs/notify/vfsmount_mark.o CC drivers/usb/gadget/function/rndis.o CC fs/notify/fdinfo.o LD fs/sysfs/built-in.o CC fs/eventpoll.o CC fs/anon_inodes.o CHK kernel/config_data.h UPD kernel/config_data.h CC kernel/configs.o CC fs/proc/base.o LD fs/notify/dnotify/built-in.o LD fs/notify/fanotify/built-in.o CC fs/notify/inotify/inotify_fsnotify.o CC drivers/usb/gadget/legacy/ether.o LD kernel/built-in.o CC net/ipv4/igmp.o CC net/ipv4/fib_frontend.o CC fs/notify/inotify/inotify_user.o CC drivers/usb/gadget/udc/core.o LD drivers/usb/gadget/function/usb_f_ecm.o LD drivers/usb/gadget/function/usb_f_ecm_subset.o LD drivers/usb/gadget/function/usb_f_rndis.o LD drivers/usb/gadget/function/built-in.o CC drivers/usb/gadget/udc/trace.o CC fs/proc/generic.o LD drivers/usb/gadget/legacy/g_ether.o LD drivers/usb/gadget/legacy/built-in.o LD drivers/usb/gadget/libcomposite.o CC fs/signalfd.o CC fs/timerfd.o LD drivers/usb/phy/built-in.o CC net/ipv4/fib_semantics.o CC net/ipv4/fib_trie.o LD fs/notify/inotify/built-in.o LD fs/notify/built-in.o CC net/ipv4/inet_fragment.o CC fs/proc/array.o LD drivers/usb/gadget/udc/udc-core.o LD drivers/usb/gadget/udc/built-in.o LD drivers/usb/gadget/built-in.o LD drivers/usb/built-in.o LD drivers/built-in.o CC fs/proc/fd.o CC fs/proc/proc_tty.o CC fs/proc/cmdline.o CC net/ipv4/ping.o CC net/ipv4/ip_tunnel_core.o CC net/ipv4/gre_offload.o CC net/ipv4/sysctl_net_ipv4.o CC fs/proc/consoles.o CC fs/proc/cpuinfo.o CC fs/proc/devices.o CC fs/proc/interrupts.o CC fs/eventfd.o CC fs/aio.o CC net/ipv4/proc.o CC net/ipv4/tcp_cubic.o CC fs/proc/loadavg.o CC fs/locks.o CC fs/binfmt_script.o CC fs/binfmt_elf_fdpic.o CC fs/proc/meminfo.o CC fs/binfmt_flat.o CC fs/proc/stat.o CC fs/mbcache.o CC fs/coredump.o CC fs/drop_caches.o CC fs/proc/uptime.o CC fs/proc/version.o CC fs/fhandle.o LD net/ipv4/built-in.o LD net/built-in.o CC fs/proc/softirqs.o CC fs/proc/namespaces.o CC fs/proc/self.o CC fs/proc/thread_self.o CC fs/proc/proc_sysctl.o CC fs/proc/proc_net.o CC fs/proc/kmsg.o LD fs/proc/proc.o LD fs/proc/built-in.o LD fs/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 KSYM .tmp_kallsyms1.o KSYM .tmp_kallsyms2.o LD vmlinux SYSMAP System.map OBJCOPY arch/blackfin/boot/vmlinux.bin Building modules, stage 2. MODPOST 8 modules LZMA arch/blackfin/boot/vmlinux.bin.lzma CC crypto/drbg.mod.o CC crypto/echainiv.mod.o CC crypto/hmac.mod.o CC crypto/jitterentropy_rng.mod.o CC crypto/sha256_generic.mod.o CC drivers/mmc/host/mmc_spi.mod.o CC drivers/mtd/chips/map_rom.mod.o CC lib/crc-ccitt.mod.o LD [M] crypto/drbg.ko LD [M] crypto/echainiv.ko LD [M] crypto/jitterentropy_rng.ko LD [M] drivers/mmc/host/mmc_spi.ko LD [M] crypto/hmac.ko LD [M] crypto/sha256_generic.ko LD [M] drivers/mtd/chips/map_rom.ko LD [M] lib/crc-ccitt.ko UIMAGE arch/blackfin/boot/uImage.lzma Image Name: bf537-0.2-4.9.0-rc5-g5d19042 Created: Fri Nov 18 06:24:54 2016 Image Type: Blackfin Linux Kernel Image (lzma compressed) Data Size: 1299591 Bytes = 1269.13 kB = 1.24 MB Load Address: 00001000 Entry Point: 0029dcc8 make[1]: Leaving directory '/home/kisskb/slave/build/linus_CM-BF537U_defconfig_bfin' Completed OK # rm -rf /home/kisskb/slave/build/linus_CM-BF537U_defconfig_bfin # Build took: 0:00:41.804513

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