Buildresult: powerpc-next/mpc85xx_smp_defconfig/powerpc-gcc5 built on Mar 8 2018, 00:53

kisskb

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Status:	Failed
Date/Time:	Mar 8 2018, 00:53
Duration:	0:00:11.924847
Builder:	ka2
Revision:	powerpc/powernv/npu: Fix deadlock in mmio_invalidate() (`b6fbf9e64995137a57c19b0aa7f6c76c727439dc)`
Target:	powerpc-next/mpc85xx_smp_defconfig/powerpc-gcc5
Branch:	powerpc-next
Compiler:	powerpc-gcc5 (powerpc64-linux-gcc (GCC) 5.3.0)
Config:	mpc85xx_smp_defconfig (download)
Log:	Download original Possible errors arch/powerpc/include/asm/hugetlb.h:101:10: error: implicit declaration of function 'slice_is_hugepage_only_range' [-Werror=implicit-function-declaration] cc1: all warnings being treated as errors make[2]: * [arch/powerpc/mm/pgtable.o] Error 1 arch/powerpc/include/asm/hugetlb.h:101:10: error: implicit declaration of function 'slice_is_hugepage_only_range' [-Werror=implicit-function-declaration] arch/powerpc/include/asm/hugetlb.h:101:10: error: implicit declaration of function 'slice_is_hugepage_only_range' [-Werror=implicit-function-declaration] cc1: all warnings being treated as errors make[2]: * [arch/powerpc/mm/init_32.o] Error 1 arch/powerpc/include/asm/hugetlb.h:101:10: error: implicit declaration of function 'slice_is_hugepage_only_range' [-Werror=implicit-function-declaration] cc1: all warnings being treated as errors make[2]: * [arch/powerpc/mm/mem.o] Error 1 arch/powerpc/include/asm/hugetlb.h:101:10: error: implicit declaration of function 'slice_is_hugepage_only_range' [-Werror=implicit-function-declaration] cc1: all warnings being treated as errors make[2]: * [arch/powerpc/mm/fault.o] Error 1 make[1]: * [arch/powerpc/mm] Error 2 cc1: all warnings being treated as errors make[2]: * [arch/powerpc/kernel/setup-common.o] Error 1 arch/powerpc/include/asm/hugetlb.h:101:10: error: implicit declaration of function 'slice_is_hugepage_only_range' [-Werror=implicit-function-declaration] arch/powerpc/include/asm/hugetlb.h:101:10: error: implicit declaration of function 'slice_is_hugepage_only_range' [-Werror=implicit-function-declaration] cc1: some warnings being treated as errors make[2]: * [kernel/fork.o] Error 1 make[1]: * [arch/powerpc/kernel] Error 2 cc1: some warnings being treated as errors make[2]: * [kernel/sysctl.o] Error 1 make[1]: * [kernel] Error 2 make: * [sub-make] Error 2 Possible warnings (1) RCU stall warning or soft lockup. Full Log # git rev-parse -q --verify b6fbf9e64995137a57c19b0aa7f6c76c727439dc^{commit} b6fbf9e64995137a57c19b0aa7f6c76c727439dc already have revision, skipping fetch # git checkout -q -f -B kisskb b6fbf9e64995137a57c19b0aa7f6c76c727439dc # git clean -qxdf # git log -1 commit b6fbf9e64995137a57c19b0aa7f6c76c727439dc Author: Alistair Popple <alistair@popple.id.au> Date: Fri Mar 2 16:18:45 2018 +1100 powerpc/powernv/npu: Fix deadlock in mmio_invalidate() When sending TLB invalidates to the NPU we need to send extra flushes due to a hardware issue. The original implementation would lock the all the ATSD MMIO registers sequentially before unlocking and relocking each of them sequentially to do the extra flush. This introduced a deadlock as it is possible for one thread to hold one ATSD register whilst waiting for another register to be freed while the other thread is holding that register waiting for the one in the first thread to be freed. For example if there are two threads and two ATSD registers: Thread A Thread B ---------------------- Acquire 1 Acquire 2 Release 1 Acquire 1 Wait 1 Wait 2 Both threads will be stuck waiting to acquire a register resulting in an RCU stall warning or soft lockup. This patch solves the deadlock by refactoring the code to ensure registers are not released between flushes and to ensure all registers are either acquired or released together and in order. Fixes: bbd5ff50afff ("powerpc/powernv/npu-dma: Add explicit flush when sending an ATSD") Signed-off-by: Alistair Popple <alistair@popple.id.au> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # < /opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < git log --format=%s --max-count=1 b6fbf9e64995137a57c19b0aa7f6c76c727439dc # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_smp_defconfig_powerpc-5.3 CROSS_COMPILE=/opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux- mpc85xx_smp_defconfig # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_smp_defconfig_powerpc-5.3 CROSS_COMPILE=/opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux- In file included from /kisskb/src/include/linux/hugetlb.h:445:0, from /kisskb/src/arch/powerpc/mm/pgtable.c:29: /kisskb/src/arch/powerpc/include/asm/hugetlb.h: In function 'is_hugepage_only_range': /kisskb/src/arch/powerpc/include/asm/hugetlb.h:101:10: error: implicit declaration of function 'slice_is_hugepage_only_range' [-Werror=implicit-function-declaration] return slice_is_hugepage_only_range(mm, addr, len); ^ cc1: all warnings being treated as errors /kisskb/src/scripts/Makefile.build:324: recipe for target 'arch/powerpc/mm/pgtable.o' failed make[2]: * [arch/powerpc/mm/pgtable.o] Error 1 make[2]: * Waiting for unfinished jobs.... In file included from /kisskb/src/include/linux/hugetlb.h:445:0, from /kisskb/src/arch/powerpc/mm/mem.c:36: /kisskb/src/arch/powerpc/include/asm/hugetlb.h: In function 'is_hugepage_only_range': /kisskb/src/arch/powerpc/include/asm/hugetlb.h:101:10: error: implicit declaration of function 'slice_is_hugepage_only_range' [-Werror=implicit-function-declaration] return slice_is_hugepage_only_range(mm, addr, len); ^ In file included from /kisskb/src/include/linux/hugetlb.h:445:0, from /kisskb/src/arch/powerpc/mm/init_32.c:35: /kisskb/src/arch/powerpc/include/asm/hugetlb.h: In function 'is_hugepage_only_range': /kisskb/src/arch/powerpc/include/asm/hugetlb.h:101:10: error: implicit declaration of function 'slice_is_hugepage_only_range' [-Werror=implicit-function-declaration] return slice_is_hugepage_only_range(mm, addr, len); ^ cc1: all warnings being treated as errors /kisskb/src/scripts/Makefile.build:324: recipe for target 'arch/powerpc/mm/init_32.o' failed make[2]: * [arch/powerpc/mm/init_32.o] Error 1 In file included from /kisskb/src/include/linux/hugetlb.h:445:0, from /kisskb/src/arch/powerpc/mm/fault.c:36: /kisskb/src/arch/powerpc/include/asm/hugetlb.h: In function 'is_hugepage_only_range': /kisskb/src/arch/powerpc/include/asm/hugetlb.h:101:10: error: implicit declaration of function 'slice_is_hugepage_only_range' [-Werror=implicit-function-declaration] return slice_is_hugepage_only_range(mm, addr, len); ^ cc1: all warnings being treated as errors /kisskb/src/scripts/Makefile.build:324: recipe for target 'arch/powerpc/mm/mem.o' failed make[2]: * [arch/powerpc/mm/mem.o] Error 1 In file included from /kisskb/src/include/linux/hugetlb.h:445:0, from /kisskb/src/arch/powerpc/kernel/setup-common.c:37: /kisskb/src/arch/powerpc/include/asm/hugetlb.h: In function 'is_hugepage_only_range': /kisskb/src/arch/powerpc/include/asm/hugetlb.h:101:10: error: implicit declaration of function 'slice_is_hugepage_only_range' [-Werror=implicit-function-declaration] return slice_is_hugepage_only_range(mm, addr, len); ^ cc1: all warnings being treated as errors /kisskb/src/scripts/Makefile.build:324: recipe for target 'arch/powerpc/mm/fault.o' failed make[2]: * [arch/powerpc/mm/fault.o] Error 1 /kisskb/src/Makefile:1051: recipe for target 'arch/powerpc/mm' failed make[1]: * [arch/powerpc/mm] Error 2 make[1]: * Waiting for unfinished jobs.... cc1: all warnings being treated as errors /kisskb/src/scripts/Makefile.build:324: recipe for target 'arch/powerpc/kernel/setup-common.o' failed make[2]: * [arch/powerpc/kernel/setup-common.o] Error 1 make[2]: * Waiting for unfinished jobs.... In file included from /kisskb/src/include/linux/hugetlb.h:445:0, from /kisskb/src/kernel/fork.c:49: /kisskb/src/arch/powerpc/include/asm/hugetlb.h: In function 'is_hugepage_only_range': /kisskb/src/arch/powerpc/include/asm/hugetlb.h:101:10: error: implicit declaration of function 'slice_is_hugepage_only_range' [-Werror=implicit-function-declaration] return slice_is_hugepage_only_range(mm, addr, len); ^ In file included from /kisskb/src/include/linux/hugetlb.h:445:0, from /kisskb/src/kernel/sysctl.c:44: /kisskb/src/arch/powerpc/include/asm/hugetlb.h: In function 'is_hugepage_only_range': /kisskb/src/arch/powerpc/include/asm/hugetlb.h:101:10: error: implicit declaration of function 'slice_is_hugepage_only_range' [-Werror=implicit-function-declaration] return slice_is_hugepage_only_range(mm, addr, len); ^ cc1: some warnings being treated as errors /kisskb/src/scripts/Makefile.build:324: recipe for target 'kernel/fork.o' failed make[2]: * [kernel/fork.o] Error 1 make[2]: * Waiting for unfinished jobs.... /kisskb/src/Makefile:1051: recipe for target 'arch/powerpc/kernel' failed make[1]: * [arch/powerpc/kernel] Error 2 cc1: some warnings being treated as errors /kisskb/src/scripts/Makefile.build:324: recipe for target 'kernel/sysctl.o' failed make[2]: * [kernel/sysctl.o] Error 1 /kisskb/src/Makefile:1051: recipe for target 'kernel' failed make[1]: * [kernel] Error 2 Makefile:146: recipe for target 'sub-make' failed make: * [sub-make] Error 2 Command 'make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_smp_defconfig_powerpc-5.3 CROSS_COMPILE=/opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux- ' returned non-zero exit status 2 # rm -rf /kisskb/build/powerpc-next_mpc85xx_smp_defconfig_powerpc-5.3 # Build took: 0:00:11.924847

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