# git rev-parse -q --verify 785373b4c38719f4af6775845df6be1dfaea120f^{commit} 785373b4c38719f4af6775845df6be1dfaea120f already have revision, skipping fetch # git checkout -q -f -B kisskb 785373b4c38719f4af6775845df6be1dfaea120f # git clean -qxdf # git log -1 commit 785373b4c38719f4af6775845df6be1dfaea120f Author: Linus Torvalds Date: Tue Aug 29 09:11:06 2017 -0700 Revert "rmap: do not call mmu_notifier_invalidate_page() under ptl" This reverts commit aac2fea94f7a3df8ad1eeb477eb2643f81fd5393. It turns out that that patch was complete and utter garbage, and broke KVM, resulting in odd oopses. Quoting Andrea Arcangeli: "The aforementioned commit has 3 bugs. 1) mmu_notifier_invalidate_range cannot be used in replacement of mmu_notifier_invalidate_range_start/end. For KVM mmu_notifier_invalidate_range is a noop and rightfully so. A MMU notifier implementation has to implement either ->invalidate_range method or the invalidate_range_start/end methods, not both. And if you implement invalidate_range_start/end like KVM is forced to do, calling mmu_notifier_invalidate_range in common code is a noop for KVM. For those MMU notifiers that can get away only implementing ->invalidate_range, the ->invalidate_range is implicitly called by mmu_notifier_invalidate_range_end(). And only those secondary MMUs that share the same pagetable with the primary MMU (like AMD iommuv2) can get away only implementing ->invalidate_range. So all cases (THP on/off) are broken right now. To fix this is enough to replace mmu_notifier_invalidate_range with mmu_notifier_invalidate_range_start;mmu_notifier_invalidate_range_end. Either that or call multiple mmu_notifier_invalidate_page like before. 2) address + (1UL << compound_order(page) is buggy, it should be PAGE_SIZE << compound_order(page), it's bytes not pages, 2M not 512. 3) The whole invalidate_range thing was an attempt to call a single invalidate while walking multiple 4k ptes that maps the same THP (after a pmd virtual split without physical compound page THP split). It's unclear if the rmap_walk will always provide an address that is 2M aligned as parameter to try_to_unmap_one, in presence of THP. I think it needs also an address &= (PAGE_SIZE << compound_order(page)) - 1 to be safe" In general, we should stop making excuses for horrible MMU notifier users. It's much more important that the core VM is sane and safe, than letting MMU notifiers sleep. So if some MMU notifier is sleeping under a spinlock, we need to fix the notifier, not try to make excuses for that garbage in the core VM. Reported-and-tested-by: Bernhard Held Reported-and-tested-by: Adam Borowski Cc: Andrea Arcangeli Cc: Radim Krčmář Cc: Wanpeng Li Cc: Paolo Bonzini Cc: Takashi Iwai Cc: Nadav Amit Cc: Mike Galbraith Cc: Kirill A. Shutemov Cc: Jérôme Glisse Cc: axie Cc: Andrew Morton Signed-off-by: Linus Torvalds # < /opt/cross/kisskb/gcc-4.6.3-nolibc/sh4-linux/bin/sh4-linux-gcc --version # < git log --format=%s --max-count=1 785373b4c38719f4af6775845df6be1dfaea120f # < make -j 48 ARCH=sh O=/home/kisskb/slave/build/linus_sh-allmodconfig_sh4 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/sh4-linux/bin/sh4-linux- allmodconfig # Added to kconfig CONFIG_BUILD_DOCSRC=n # Added to kconfig CONFIG_MODULE_SIG=n # Added to kconfig CONFIG_SAMPLES=n # yes \n | make -j 48 ARCH=sh O=/home/kisskb/slave/build/linus_sh-allmodconfig_sh4 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/sh4-linux/bin/sh4-linux- oldconfig yes: standard output: Broken pipe yes: write error # make -j 48 ARCH=sh O=/home/kisskb/slave/build/linus_sh-allmodconfig_sh4 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/sh4-linux/bin/sh4-linux- make[1]: Entering directory '/home/kisskb/slave/build/linus_sh-allmodconfig_sh4' GEN ./Makefile scripts/kconfig/conf --silentoldconfig Kconfig CHK include/config/kernel.release GEN ./Makefile WRAP arch/sh/include/generated/uapi/asm/bitsperlong.h WRAP arch/sh/include/generated/uapi/asm/errno.h WRAP arch/sh/include/generated/uapi/asm/fcntl.h WRAP arch/sh/include/generated/uapi/asm/ioctl.h WRAP arch/sh/include/generated/uapi/asm/ipcbuf.h WRAP arch/sh/include/generated/uapi/asm/kvm_para.h WRAP arch/sh/include/generated/uapi/asm/mman.h WRAP arch/sh/include/generated/uapi/asm/msgbuf.h WRAP arch/sh/include/generated/uapi/asm/poll.h WRAP arch/sh/include/generated/uapi/asm/param.h WRAP arch/sh/include/generated/uapi/asm/resource.h WRAP arch/sh/include/generated/uapi/asm/sembuf.h WRAP arch/sh/include/generated/uapi/asm/shmbuf.h UPD include/config/kernel.release WRAP arch/sh/include/generated/uapi/asm/siginfo.h WRAP arch/sh/include/generated/uapi/asm/socket.h WRAP arch/sh/include/generated/uapi/asm/statfs.h WRAP arch/sh/include/generated/uapi/asm/termbits.h WRAP arch/sh/include/generated/uapi/asm/termios.h WRAP arch/sh/include/generated/uapi/asm/ucontext.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 HOSTCC scripts/basic/bin2c Using /home/kisskb/slave/src as source for kernel WRAP arch/sh/include/generated/asm/clkdev.h WRAP arch/sh/include/generated/asm/current.h WRAP arch/sh/include/generated/asm/div64.h WRAP arch/sh/include/generated/asm/delay.h WRAP arch/sh/include/generated/asm/emergency-restart.h WRAP arch/sh/include/generated/asm/exec.h WRAP arch/sh/include/generated/asm/irq_regs.h WRAP arch/sh/include/generated/asm/irq_work.h WRAP arch/sh/include/generated/asm/local.h WRAP arch/sh/include/generated/asm/local64.h WRAP arch/sh/include/generated/asm/mm-arch-hooks.h WRAP arch/sh/include/generated/asm/mcs_spinlock.h WRAP arch/sh/include/generated/asm/parport.h WRAP arch/sh/include/generated/asm/percpu.h WRAP arch/sh/include/generated/asm/preempt.h WRAP arch/sh/include/generated/asm/rwsem.h WRAP arch/sh/include/generated/asm/serial.h WRAP arch/sh/include/generated/asm/sizes.h WRAP arch/sh/include/generated/asm/xor.h WRAP arch/sh/include/generated/asm/trace_clock.h HOSTCC scripts/pnmtologo HOSTCC scripts/kallsyms HOSTCC scripts/extract-cert HOSTCC scripts/conmakehash HOSTCC scripts/asn1_compiler HOSTCC scripts/insert-sys-cert HOSTCC scripts/dtc/dtc.o HOSTCC scripts/dtc/flattree.o SHIPPED scripts/genksyms/parse.tab.c HOSTCC scripts/dtc/fstree.o SHIPPED scripts/genksyms/lex.lex.c SHIPPED scripts/genksyms/parse.tab.h SHIPPED scripts/genksyms/keywords.hash.c HOSTCC scripts/dtc/treesource.o HOSTCC scripts/genksyms/parse.tab.o HOSTCC scripts/dtc/srcpos.o HOSTCC scripts/genksyms/lex.lex.o HOSTCC scripts/dtc/data.o HOSTCC scripts/mod/mk_elfconfig HOSTCC scripts/dtc/checks.o SHIPPED scripts/dtc/dtc-parser.tab.c HOSTCC scripts/dtc/util.o SHIPPED scripts/dtc/dtc-parser.tab.h SHIPPED scripts/dtc/dtc-lexer.lex.c CC scripts/mod/devicetable-offsets.s HOSTCC scripts/dtc/livetree.o CC scripts/mod/empty.o HOSTCC scripts/dtc/dtc-parser.tab.o HOSTCC scripts/genksyms/genksyms.o HOSTCC scripts/dtc/dtc-lexer.lex.o HOSTCC scripts/selinux/genheaders/genheaders HOSTCC scripts/selinux/mdp/mdp 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/dtc/dtc HOSTLD scripts/genksyms/genksyms HOSTLD scripts/mod/modpost Generating include/generated/machtypes.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/sh/kernel/asm-offsets.s CHK include/generated/asm-offsets.h UPD include/generated/asm-offsets.h CALL /home/kisskb/slave/src/scripts/checksyscalls.sh :1317:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp] :1320:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp] :1323:2: warning: #warning syscall pkey_free not implemented [-Wcpp] :1326:2: warning: #warning syscall statx not implemented [-Wcpp] CC init/main.o CHK include/generated/compile.h CC init/do_mounts.o CC init/do_mounts_initrd.o CC init/initramfs.o CC init/calibrate.o CC init/init_task.o HOSTCC usr/gen_init_cpio UPD include/generated/compile.h CC init/version.o CC arch/sh/mm/alignment.o CC arch/sh/mm/init.o CC arch/sh/mm/mmap.o CC arch/sh/mm/cache.o CC arch/sh/mm/cache-sh2.o CC arch/sh/mm/consistent.o CC arch/sh/mm/nommu.o CC arch/sh/mm/extable_32.o CC arch/sh/mm/asids-debugfs.o CC arch/sh/boards/of-generic.o AS arch/sh/kernel/debugtraps.o CC arch/sh/kernel/dma-nommu.o CC arch/sh/kernel/io.o CC arch/sh/kernel/idle.o CC arch/sh/kernel/dumpstack.o CC arch/sh/kernel/irq.o CC arch/sh/math-emu/math.o CC arch/sh/kernel/irq_32.o CC arch/sh/kernel/machvec.o CC arch/sh/kernel/kdebugfs.o CC arch/sh/kernel/process.o CC arch/sh/kernel/nmi_debug.o CC arch/sh/kernel/process_32.o CC arch/sh/kernel/ptrace.o CC arch/sh/kernel/setup.o CC arch/sh/kernel/sys_sh.o CC arch/sh/kernel/ptrace_32.o CC arch/sh/kernel/return_address.o AS arch/sh/kernel/syscalls_32.o CC arch/sh/kernel/traps.o CC arch/sh/kernel/topology.o CC arch/sh/kernel/signal_32.o CC arch/sh/kernel/reboot.o CC arch/sh/kernel/unwinder.o CC arch/sh/kernel/sh_bios.o CC arch/sh/kernel/traps_32.o CC arch/sh/kernel/sys_sh32.o CC arch/sh/kernel/time.o CC arch/sh/kernel/iomap.o CC arch/sh/kernel/kgdb.o make[2]: *** No rule to make target 'arch/sh/boot/dts/.dtb.o', needed by 'arch/sh/boot/dts/built-in.o'. Stop. /home/kisskb/slave/src/Makefile:1019: recipe for target 'arch/sh/boot/dts' failed make[1]: *** [arch/sh/boot/dts] Error 2 make[1]: *** Waiting for unfinished jobs.... CC arch/sh/kernel/sh_ksyms_32.o CC arch/sh/kernel/cpu/irq/imask.o CC arch/sh/kernel/cpu/clock-cpg.o GEN usr/initramfs_data.cpio AS arch/sh/kernel/cpu/sh2/ex.o CC arch/sh/kernel/cpu/init.o CC arch/sh/kernel/module.o CC arch/sh/kernel/crash_dump.o In file included from /home/kisskb/slave/src/arch/sh/math-emu/math.c:23:0: /home/kisskb/slave/src/include/math-emu/single.h:50:21: warning: "__BIG_ENDIAN" is not defined [-Wundef] In file included from /home/kisskb/slave/src/arch/sh/math-emu/math.c:24:0: /home/kisskb/slave/src/include/math-emu/double.h:59:21: warning: "__BIG_ENDIAN" is not defined [-Wundef] /home/kisskb/slave/src/arch/sh/math-emu/math.c:54:0: warning: "WRITE" redefined [enabled by default] /home/kisskb/slave/src/include/linux/kernel.h:58:0: note: this is the location of the previous definition /home/kisskb/slave/src/arch/sh/math-emu/math.c:55:0: warning: "READ" redefined [enabled by default] /home/kisskb/slave/src/include/linux/kernel.h:57:0: note: this is the location of the previous definition /home/kisskb/slave/src/arch/sh/math-emu/math.c: In function 'fcmp_gt': /home/kisskb/slave/src/arch/sh/math-emu/math.c:81:1: warning: left shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:81:1: warning: left shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c: In function 'fcmp_eq': /home/kisskb/slave/src/arch/sh/math-emu/math.c:92:1: warning: left shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:92:1: warning: left shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c: In function 'fadd': /home/kisskb/slave/src/arch/sh/math-emu/math.c:108:1: warning: left shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:108:1: warning: left shift count is negative [enabled by default] CC arch/sh/kernel/cpu/clock.o /home/kisskb/slave/src/arch/sh/math-emu/math.c:108:1: warning: right shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:108:1: warning: left shift count >= width of type [enabled by default] CC arch/sh/kernel/stacktrace.o /home/kisskb/slave/src/arch/sh/math-emu/math.c:108:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:108:1: warning: right shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:108:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:108:1: warning: right shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:108:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:108:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:108:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:108:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c: In function 'fsub': /home/kisskb/slave/src/arch/sh/math-emu/math.c:115:1: warning: left shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:115:1: warning: left shift count is negative [enabled by default] CC arch/sh/kernel/cpu/fpu.o /home/kisskb/slave/src/arch/sh/math-emu/math.c:115:1: warning: right shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:115:1: warning: left shift count >= width of type [enabled by default] CC arch/sh/kernel/cpu/pfc.o /home/kisskb/slave/src/arch/sh/math-emu/math.c:115:1: warning: statement with no effect [-Wunused-value] AR arch/sh/boards/built-in.o /home/kisskb/slave/src/arch/sh/math-emu/math.c:115:1: warning: right shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:115:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:115:1: warning: right shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:115:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:115:1: warning: statement with no effect [-Wunused-value] CC arch/sh/kernel/cpu/proc.o CC arch/sh/kernel/cpu/sh2/probe.o /home/kisskb/slave/src/arch/sh/math-emu/math.c:115:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:115:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c: In function 'fmul': /home/kisskb/slave/src/arch/sh/math-emu/math.c:122:1: warning: left shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:122:1: warning: left shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:122:1: warning: right shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:122:1: warning: left shift count >= width of type [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:122:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:122:1: warning: right shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:122:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:122:1: warning: right shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:122:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:122:1: warning: right shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:122:1: warning: left shift count >= width of type [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:122:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:122:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:122:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c: In function 'fdiv': /home/kisskb/slave/src/arch/sh/math-emu/math.c:129:1: warning: left shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:129:1: warning: left shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:129:1: warning: left shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:129:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:129:1: warning: right shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:129:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:129:1: warning: right shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:129:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:129:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:129:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:129:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c: In function 'fmac': /home/kisskb/slave/src/arch/sh/math-emu/math.c:145:2: warning: right shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:145:2: warning: left shift count >= width of type [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:147:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:147:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:147:1: warning: statement with no effect [-Wunused-value] CC arch/sh/kernel/kprobes.o AS arch/sh/kernel/cpu/sh2/entry.o /home/kisskb/slave/src/arch/sh/math-emu/math.c: In function 'ffloat': /home/kisskb/slave/src/arch/sh/math-emu/math.c:294:3: warning: right shift count >= width of type [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:294:3: warning: right shift count >= width of type [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:294:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:294:3: warning: right shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:294:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:294:3: warning: right shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:294:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:296:3: warning: right shift count >= width of type [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:296:3: warning: right shift count >= width of type [enabled by default] CC arch/sh/kernel/ftrace.o /home/kisskb/slave/src/arch/sh/math-emu/math.c:296:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:296:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:296:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c: In function 'ftrc': /home/kisskb/slave/src/arch/sh/math-emu/math.c:310:1: warning: left shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:310:1: warning: left shift count >= width of type [enabled by default] CC arch/sh/kernel/cpu/sh2/setup-sh7619.o /home/kisskb/slave/src/arch/sh/math-emu/math.c:310:1: warning: left shift count >= width of type [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:310:1: warning: right shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:310:1: warning: left shift count >= width of type [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c: In function 'fcnvsd': /home/kisskb/slave/src/arch/sh/math-emu/math.c:323:2: warning: left shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:324:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:324:2: warning: right shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:324:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:324:2: warning: right shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:324:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c: In function 'fcnvds': /home/kisskb/slave/src/arch/sh/math-emu/math.c:333:1: warning: left shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:334:2: warning: right shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:334:2: warning: left shift count >= width of type [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:334:2: warning: right shift count is negative [enabled by default] /home/kisskb/slave/src/arch/sh/math-emu/math.c:335:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:335:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c:335:1: warning: statement with no effect [-Wunused-value] /home/kisskb/slave/src/arch/sh/math-emu/math.c: At top level: /home/kisskb/slave/src/arch/sh/math-emu/math.c:505:12: warning: 'ieee_fpe_handler' defined but not used [-Wunused-function] AS usr/initramfs_data.o /home/kisskb/slave/src/arch/sh/kernel/cpu/sh2/../../entry-common.S: Assembler messages: /home/kisskb/slave/src/arch/sh/kernel/cpu/sh2/../../entry-common.S:89: Warning: overflow in branch to __restore_all; converted into longer instruction sequence /home/kisskb/slave/src/arch/sh/kernel/cpu/sh2/../../entry-common.S:208: Warning: overflow in branch to syscall_call; converted into longer instruction sequence /home/kisskb/slave/src/arch/sh/kernel/cpu/sh2/../../entry-common.S:356: Warning: overflow in branch to syscall_trace_entry; converted into longer instruction sequence /home/kisskb/slave/src/arch/sh/kernel/cpu/sh2/../../entry-common.S:358: Warning: overflow in branch to syscall_trace_entry; converted into longer instruction sequence /home/kisskb/slave/src/arch/sh/kernel/cpu/sh2/../../entry-common.S:389: Warning: overflow in branch to syscall_exit_work; converted into longer instruction sequence /home/kisskb/slave/src/arch/sh/kernel/cpu/sh2/../../entry-common.S:392: Warning: overflow in branch to syscall_exit_work; converted into longer instruction sequence AR usr/built-in.o CC arch/sh/kernel/disassemble.o CC arch/sh/kernel/cpu/sh2/clock-sh7619.o CC arch/sh/kernel/dwarf.o CC arch/sh/kernel/perf_event.o /home/kisskb/slave/src/arch/sh/kernel/cpu/clock-cpg.c: In function 'cpg_clk_init': /home/kisskb/slave/src/arch/sh/kernel/cpu/clock-cpg.c:52:3: warning: 'arch_init_clk_ops' is deprecated (declared at /home/kisskb/slave/src/arch/sh/include/asm/clock.h:7) [-Wdeprecated-declarations] /home/kisskb/slave/src/arch/sh/kernel/cpu/clock-cpg.c: In function 'arch_clk_init': /home/kisskb/slave/src/arch/sh/kernel/cpu/clock-cpg.c:76:2: warning: 'cpg_clk_init' is deprecated (declared at /home/kisskb/slave/src/arch/sh/kernel/cpu/clock-cpg.c:46) [-Wdeprecated-declarations] CC arch/sh/kernel/perf_callchain.o CC arch/sh/kernel/hw_breakpoint.o AS arch/sh/kernel/head_32.o LDS arch/sh/kernel/vmlinux.lds /home/kisskb/slave/src/arch/sh/kernel/cpu/clock.c: In function 'clk_init': /home/kisskb/slave/src/arch/sh/kernel/cpu/clock.c:25:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] AR arch/sh/kernel/cpu/irq/built-in.o AR arch/sh/mm/built-in.o AR arch/sh/kernel/cpu/sh2/built-in.o AR arch/sh/kernel/cpu/built-in.o AR init/mounts.o AR init/built-in.o AR arch/sh/kernel/built-in.o AR arch/sh/math-emu/built-in.o make[1]: Leaving directory '/home/kisskb/slave/build/linus_sh-allmodconfig_sh4' Makefile:145: recipe for target 'sub-make' failed make: *** [sub-make] Error 2 Command 'make -j 48 ARCH=sh O=/home/kisskb/slave/build/linus_sh-allmodconfig_sh4 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/sh4-linux/bin/sh4-linux- ' returned non-zero exit status 2 # rm -rf /home/kisskb/slave/build/linus_sh-allmodconfig_sh4 # Build took: 0:00:11.383034