Date: Mon, 20 Nov 2017 21:59:23 -0800 From: Mark Millard <markmi@dsl-only.net> To: freebsd-amd64@freebsd.org, FreeBSD Current <freebsd-current@freebsd.org>, freebsd-hackers <freebsd-hackers@freebsd.org> Cc: mjg@freebsd.org Subject: head -r325700 to -r325997: problem locking/unlocking/<something> for (at least) amd64? Message-ID: <E3A9183D-7F40-4A16-BB81-59A93372F037@dsl-only.net>
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Ever since I updated from -r325700 to -r325997 I've been having odd, non-repeatable, fairly rare problems on amd64. (I've yet to see if I get similar issues on other platforms.) I've reported a couple of panic for page faults in kernel mode in other list messages. But I'm also getting things like clang failing assertions that do not repeat when the compile is simply retried with the same input files. I only mention locking because of recent head/sys/kern activity between -r325700 and -r325997, the intermittent nature of the observed failures, and the wide variety of contexts (kernel, world). I do not have specific evidence of a specific cause. (I do not see how I'm ever going to get any such evidence.) The following error did not repeat on a simple retry of the compile: --- Sema/SemaDeclAttr.o --- Assertion failed: (I->second && I->first =3D=3D I->second->getValPtr() = && "List invariant broken!"), function AddToUseList, file = /usr/src/contrib/llvm/lib/IR/Value.cpp, line 793. c++: error: unable to execute command: Abort trap (core dumped) c++: error: clang frontend command failed due to signal (use -v to see = invocation) FreeBSD clang version 5.0.0 (tags/RELEASE_500/final 312559) (based on = LLVM 5.0.0svn) Target: powerpc-unknown-freebsd12.0 Thread model: posix InstalledDir: = /usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.powerpc/tmp/usr= /bin c++: note: diagnostic msg: PLEASE submit a bug report to = https://bugs.freebsd.org/submit/ and include the crash backtrace, = preprocessed source, and associated run script. Building = /usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.powerpc/lib/cla= ng/libclang/Sema/SemaExceptionSpec.o c++: note: diagnostic msg:=20 ******************** PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT: Preprocessed source(s) and associated run script(s) are located at: c++: note: diagnostic msg: /tmp/SemaDeclAttr-6b7ba8.cpp c++: note: diagnostic msg: /tmp/SemaDeclAttr-6b7ba8.sh c++: note: diagnostic msg:=20 ******************** *** [Sema/SemaDeclAttr.o] Error code 254 make[6]: stopped in /usr/src/lib/clang/libclang .ERROR_TARGET=3D'Sema/SemaDeclAttr.o' = .ERROR_META_FILE=3D'/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/pow= erpc.powerpc/lib/clang/libclang/Sema_SemaDeclAttr.o.meta' .MAKE.LEVEL=3D'6' MAKEFILE=3D'' .MAKE.MODE=3D'meta missing-filemon=3Dyes missing-meta=3Dyes silent=3Dyes = verbose' _ERROR_CMD=3D'c++ -target powerpc-unknown-freebsd12.0 = --sysroot=3D/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.pow= erpc/tmp = -B/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.powerpc/tmp/u= sr/bin -O2 -pipe = -I/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.powerpc/lib/c= lang/libclang = -I/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.powerpc/lib/c= lang/libllvm -I/usr/src/contrib/llvm/tools/clang/lib/Driver = -I/usr/src/contrib/llvm/tools/clang/include -DCLANG_ENABLE_ARCMT = -DCLANG_ENABLE_STATIC_ANALYZER -I/usr/src/lib/clang/include = -I/usr/src/contrib/llvm/include -DLLVM_BUILD_GLOBAL_ISEL = -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS = -DLLVM_DEFAULT_TARGET_TRIPLE=3D\"powerpc-unknown-freebsd12.0\" = -DLLVM_HOST_TRIPLE=3D\"powerpc-unknown-freebsd12.0\" = -DDEFAULT_SYSROOT=3D\"\" -ffunction-sections -fdata-sections = -gline-tables-only -fstack-protector-strong -Qunused-arguments = -std=3Dc++11 -fno-exceptions -fno-rtti -gline-tables-only -stdlib=3Dlibc++= -Wno-c++11-extensions -c = /usr/src/contrib/llvm/tools/clang/lib/Sema/SemaDeclAttr.cpp -o = Sema/SemaDeclAttr.o;' .CURDIR=3D'/usr/src/lib/clang/libclang' .MAKE=3D'make' = .OBJDIR=3D'/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.powe= rpc/lib/clang/libclang' .TARGETS=3D'all' = DESTDIR=3D'/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.powe= rpc/tmp' LD_LIBRARY_PATH=3D'' MACHINE=3D'powerpc' MACHINE_ARCH=3D'powerpc' MAKEOBJDIRPREFIX=3D'' MAKESYSPATH=3D'/usr/src/share/mk' MAKE_VERSION=3D'20171028' = PATH=3D'/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.powerpc= /tmp/legacy/usr/sbin:/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/po= werpc.powerpc/tmp/legacy/usr/bin:/usr/obj/powerpcvtsc_clang/powerpc.powerp= c/usr/src/powerpc.powerpc/tmp/legacy/bin:/usr/obj/powerpcvtsc_clang/powerp= c.powerpc/usr/src/powerpc.powerpc/tmp/usr/sbin:/usr/obj/powerpcvtsc_clang/= powerpc.powerpc/usr/src/powerpc.powerpc/tmp/usr/bin:/sbin:/bin:/usr/sbin:/= usr/bin' SRCTOP=3D'/usr/src' = OBJTOP=3D'/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.power= pc' .MAKE.MAKEFILES=3D'/usr/src/share/mk/sys.mk = /usr/src/share/mk/local.sys.env.mk /usr/src/share/mk/src.sys.env.mk = /root/src.configs/src.conf.powerpc-clang-bootstrap.amd64-host = /usr/src/share/mk/bsd.mkopt.mk /usr/src/share/mk/src.sys.obj.mk = /usr/src/share/mk/auto.obj.mk /usr/src/share/mk/bsd.suffixes.mk = /root/src.configs/make.conf /usr/src/share/mk/local.sys.mk = /usr/src/share/mk/src.sys.mk /dev/null = /usr/src/lib/clang/libclang/Makefile /usr/src/share/mk/src.opts.mk = /usr/src/share/mk/bsd.own.mk /usr/src/share/mk/bsd.opts.mk = /usr/src/share/mk/bsd.cpu.mk /usr/src/share/mk/bsd.compiler.mk = /usr/src/share/mk/bsd.linker.mk /usr/src/lib/clang/clang.pre.mk = /usr/src/lib/clang/llvm.pre.mk /usr/src/lib/clang/clang.build.mk = /usr/src/lib/clang/llvm.build.mk /usr/src/share/mk/bsd.lib.mk = /usr/src/share/mk/bsd.init.mk /usr/src/share/mk/local.init.mk = /usr/src/share/mk/src.init.mk = /usr/src/lib/clang/libclang/../Makefile.inc = /usr/src/share/mk/bsd.libnames.mk /usr/src/share/mk/src.libnames.mk = /usr/src/share/mk/bsd.symver.mk /usr/src/share/mk/bsd.nls.mk = /usr/src/share/mk/bsd.files.mk /usr/src/share/mk/bsd.incs.mk = /usr/src/share/mk/bsd.confs.mk /usr/src/share/mk/bsd.links.mk = /usr/src/share/mk/bsd.dep.mk /usr/src/share/mk/bsd.clang-analyze.mk = /usr/src/share/mk/bsd.obj.mk /usr/src/share/mk/bsd.subdir.mk = /usr/src/share/mk/bsd.sys.mk' .PATH=3D'. /usr/src/lib/clang/libclang = /usr/src/contrib/llvm/tools/clang/lib' 1 error make[6]: stopped in /usr/src/lib/clang/libclang .ERROR_TARGET=3D'Sema/SemaDeclAttr.o' = .ERROR_META_FILE=3D'/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/pow= erpc.powerpc/lib/clang/libclang/Sema_SemaDeclAttr.o.meta' .MAKE.LEVEL=3D'6' MAKEFILE=3D'' .MAKE.MODE=3D'meta missing-filemon=3Dyes missing-meta=3Dyes silent=3Dyes = verbose' _ERROR_CMD=3D'c++ -target powerpc-unknown-freebsd12.0 = --sysroot=3D/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.pow= erpc/tmp = -B/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.powerpc/tmp/u= sr/bin -O2 -pipe = -I/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.powerpc/lib/c= lang/libclang = -I/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.powerpc/lib/c= lang/libllvm -I/usr/src/contrib/llvm/tools/clang/lib/Driver = -I/usr/src/contrib/llvm/tools/clang/include -DCLANG_ENABLE_ARCMT = -DCLANG_ENABLE_STATIC_ANALYZER -I/usr/src/lib/clang/include = -I/usr/src/contrib/llvm/include -DLLVM_BUILD_GLOBAL_ISEL = -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS = -DLLVM_DEFAULT_TARGET_TRIPLE=3D\"powerpc-unknown-freebsd12.0\" = -DLLVM_HOST_TRIPLE=3D\"powerpc-unknown-freebsd12.0\" = -DDEFAULT_SYSROOT=3D\"\" -ffunction-sections -fdata-sections = -gline-tables-only -fstack-protector-strong -Qunused-arguments = -std=3Dc++11 -fno-exceptions -fno-rtti -gline-tables-only -stdlib=3Dlibc++= -Wno-c++11-extensions -c = /usr/src/contrib/llvm/tools/clang/lib/Sema/SemaDeclAttr.cpp -o = Sema/SemaDeclAttr.o;' .CURDIR=3D'/usr/src/lib/clang/libclang' .MAKE=3D'make' = .OBJDIR=3D'/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.powe= rpc/lib/clang/libclang' .TARGETS=3D'all' = DESTDIR=3D'/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.powe= rpc/tmp' LD_LIBRARY_PATH=3D'' MACHINE=3D'powerpc' MACHINE_ARCH=3D'powerpc' MAKEOBJDIRPREFIX=3D'' MAKESYSPATH=3D'/usr/src/share/mk' MAKE_VERSION=3D'20171028' = PATH=3D'/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.powerpc= /tmp/legacy/usr/sbin:/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/po= werpc.powerpc/tmp/legacy/usr/bin:/usr/obj/powerpcvtsc_clang/powerpc.powerp= c/usr/src/powerpc.powerpc/tmp/legacy/bin:/usr/obj/powerpcvtsc_clang/powerp= c.powerpc/usr/src/powerpc.powerpc/tmp/usr/sbin:/usr/obj/powerpcvtsc_clang/= powerpc.powerpc/usr/src/powerpc.powerpc/tmp/usr/bin:/sbin:/bin:/usr/sbin:/= usr/bin' SRCTOP=3D'/usr/src' = OBJTOP=3D'/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.power= pc' .MAKE.MAKEFILES=3D'/usr/src/share/mk/sys.mk = /usr/src/share/mk/local.sys.env.mk /usr/src/share/mk/src.sys.env.mk = /root/src.configs/src.conf.powerpc-clang-bootstrap.amd64-host = /usr/src/share/mk/bsd.mkopt.mk /usr/src/share/mk/src.sys.obj.mk = /usr/src/share/mk/auto.obj.mk /usr/src/share/mk/bsd.suffixes.mk = /root/src.configs/make.conf /usr/src/share/mk/local.sys.mk = /usr/src/share/mk/src.sys.mk /dev/null = /usr/src/lib/clang/libclang/Makefile /usr/src/share/mk/src.opts.mk = /usr/src/share/mk/bsd.own.mk /usr/src/share/mk/bsd.opts.mk = /usr/src/share/mk/bsd.cpu.mk /usr/src/share/mk/bsd.compiler.mk = /usr/src/share/mk/bsd.linker.mk /usr/src/lib/clang/clang.pre.mk = /usr/src/lib/clang/llvm.pre.mk /usr/src/lib/clang/clang.build.mk = /usr/src/lib/clang/llvm.build.mk /usr/src/share/mk/bsd.lib.mk = /usr/src/share/mk/bsd.init.mk /usr/src/share/mk/local.init.mk = /usr/src/share/mk/src.init.mk = /usr/src/lib/clang/libclang/../Makefile.inc = /usr/src/share/mk/bsd.libnames.mk /usr/src/share/mk/src.libnames.mk = /usr/src/share/mk/bsd.symver.mk /usr/src/share/mk/bsd.nls.mk = /usr/src/share/mk/bsd.files.mk /usr/src/share/mk/bsd.incs.mk = /usr/src/share/mk/bsd.confs.mk /usr/src/share/mk/bsd.links.mk = /usr/src/share/mk/bsd.dep.mk /usr/src/share/mk/bsd.clang-analyze.mk = /usr/src/share/mk/bsd.obj.mk /usr/src/share/mk/bsd.subdir.mk = /usr/src/share/mk/bsd.sys.mk' .PATH=3D'. /usr/src/lib/clang/libclang = /usr/src/contrib/llvm/tools/clang/lib' *** [all_subdir_lib/clang/libclang] Error code 2 make[5]: stopped in /usr/src/lib/clang .ERROR_TARGET=3D'all_subdir_lib/clang/libclang' .ERROR_META_FILE=3D'' .MAKE.LEVEL=3D'5' MAKEFILE=3D'' .MAKE.MODE=3D'meta missing-filemon=3Dyes missing-meta=3Dyes silent=3Dyes = verbose' _ERROR_CMD=3D'.PHONY' .CURDIR=3D'/usr/src/lib/clang' .MAKE=3D'make' = .OBJDIR=3D'/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.powe= rpc/lib/clang' .TARGETS=3D'all' = DESTDIR=3D'/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.powe= rpc/tmp' LD_LIBRARY_PATH=3D'' MACHINE=3D'powerpc' MACHINE_ARCH=3D'powerpc' MAKEOBJDIRPREFIX=3D'' MAKESYSPATH=3D'/usr/src/share/mk' MAKE_VERSION=3D'20171028' = PATH=3D'/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.powerpc= /tmp/legacy/usr/sbin:/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/po= werpc.powerpc/tmp/legacy/usr/bin:/usr/obj/powerpcvtsc_clang/powerpc.powerp= c/usr/src/powerpc.powerpc/tmp/legacy/bin:/usr/obj/powerpcvtsc_clang/powerp= c.powerpc/usr/src/powerpc.powerpc/tmp/usr/sbin:/usr/obj/powerpcvtsc_clang/= powerpc.powerpc/usr/src/powerpc.powerpc/tmp/usr/bin:/sbin:/bin:/usr/sbin:/= usr/bin' SRCTOP=3D'/usr/src' = OBJTOP=3D'/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.power= pc' .MAKE.MAKEFILES=3D'/usr/src/share/mk/sys.mk = /usr/src/share/mk/local.sys.env.mk /usr/src/share/mk/src.sys.env.mk = /root/src.configs/src.conf.powerpc-clang-bootstrap.amd64-host = /usr/src/share/mk/bsd.mkopt.mk /usr/src/share/mk/src.sys.obj.mk = /usr/src/share/mk/auto.obj.mk /usr/src/share/mk/bsd.suffixes.mk = /root/src.configs/make.conf /usr/src/share/mk/local.sys.mk = /usr/src/share/mk/src.sys.mk /dev/null /usr/src/lib/clang/Makefile = /usr/src/share/mk/src.opts.mk /usr/src/share/mk/bsd.own.mk = /usr/src/share/mk/bsd.opts.mk /usr/src/share/mk/bsd.cpu.mk = /usr/src/share/mk/bsd.compiler.mk /usr/src/share/mk/bsd.linker.mk = /usr/src/share/mk/bsd.subdir.mk /usr/src/share/mk/bsd.init.mk = /usr/src/share/mk/local.init.mk /usr/src/share/mk/src.init.mk = /usr/src/lib/clang/../Makefile.inc' .PATH=3D'. /usr/src/lib/clang' 1 error make[5]: stopped in /usr/src/lib/clang .ERROR_TARGET=3D'all_subdir_lib/clang/libclang' .ERROR_META_FILE=3D'' .MAKE.LEVEL=3D'5' MAKEFILE=3D'' .MAKE.MODE=3D'meta missing-filemon=3Dyes missing-meta=3Dyes silent=3Dyes = verbose' _ERROR_CMD=3D'.PHONY' .CURDIR=3D'/usr/src/lib/clang' .MAKE=3D'make' = .OBJDIR=3D'/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.powe= rpc/lib/clang' .TARGETS=3D'all' = DESTDIR=3D'/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.powe= rpc/tmp' LD_LIBRARY_PATH=3D'' MACHINE=3D'powerpc' MACHINE_ARCH=3D'powerpc' MAKEOBJDIRPREFIX=3D'' MAKESYSPATH=3D'/usr/src/share/mk' MAKE_VERSION=3D'20171028' = PATH=3D'/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.powerpc= /tmp/legacy/usr/sbin:/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/po= werpc.powerpc/tmp/legacy/usr/bin:/usr/obj/powerpcvtsc_clang/powerpc.powerp= c/usr/src/powerpc.powerpc/tmp/legacy/bin:/usr/obj/powerpcvtsc_clang/powerp= c.powerpc/usr/src/powerpc.powerpc/tmp/usr/sbin:/usr/obj/powerpcvtsc_clang/= powerpc.powerpc/usr/src/powerpc.powerpc/tmp/usr/bin:/sbin:/bin:/usr/sbin:/= usr/bin' SRCTOP=3D'/usr/src' = OBJTOP=3D'/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/powerpc.power= pc' .MAKE.MAKEFILES=3D'/usr/src/share/mk/sys.mk = /usr/src/share/mk/local.sys.env.mk /usr/src/share/mk/src.sys.env.mk = /root/src.configs/src.conf.powerpc-clang-bootstrap.amd64-host = /usr/src/share/mk/bsd.mkopt.mk /usr/src/share/mk/src.sys.obj.mk = /usr/src/share/mk/auto.obj.mk /usr/src/share/mk/bsd.suffixes.mk = /root/src.configs/make.conf /usr/src/share/mk/local.sys.mk = /usr/src/share/mk/src.sys.mk /dev/null /usr/src/lib/clang/Makefile = /usr/src/share/mk/src.opts.mk /usr/src/share/mk/bsd.own.mk = /usr/src/share/mk/bsd.opts.mk /usr/src/share/mk/bsd.cpu.mk = /usr/src/share/mk/bsd.compiler.mk /usr/src/share/mk/bsd.linker.mk = /usr/src/share/mk/bsd.subdir.mk /usr/src/share/mk/bsd.init.mk = /usr/src/share/mk/local.init.mk /usr/src/share/mk/src.init.mk = /usr/src/lib/clang/../Makefile.inc' .PATH=3D'. /usr/src/lib/clang' *** [all_subdir_lib/clang] Error code 2 =3D=3D=3D Mark Millard markmi at dsl-only.net
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