[linux-next:master 1787/4300] /bin/bash: line 1: 3715679 Segmentation fault clang -Wp,-MMD,kernel/sched/.fair.o.d -nostdinc -Iarch/powerpc/include -I./arch/powerpc/include/generated -Iinclude -I./include -Iarch/powerpc/include/uapi -I./arch/powerpc/include/generated/uapi -Iinclud...

:::::: 
:::::: Manual check reason: "clang compiler bug"
:::::: Manual check reason: "extra build warning to Peter Zijlstra"
:::::: 

BCC: [email protected]
CC: [email protected]
TO: "Peter Zijlstra (Intel)" <[email protected]>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   5c73cd9f0819c1c44e373e3dabb68318b1de1a12
commit: 85570f10a4c61372c1d437365b9d8dbad512ec6f [1787/4300] sched/eevdf: Move to a single runqueue
:::::: branch date: 22 hours ago
:::::: commit date: 8 days ago
config: powerpc-randconfig-r134-20260708 (https://download.01.org/0day-ci/archive/20260708/[email protected]/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 0a2fb2a2269da0e2a3e230beb6cad39ca314db33)
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260708/[email protected]/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/r/[email protected]/

Note: functions only called from assembly code should be annotated with the asmlinkage attribute
All errors (new ones prefixed by >>):

   PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace and dumped files.
   Stack dump:
   0.	Program arguments: clang -Wp,-MMD,kernel/sched/.fair.o.d -nostdinc -Iarch/powerpc/include -I./arch/powerpc/include/generated -Iinclude -I./include -Iarch/powerpc/include/uapi -I./arch/powerpc/include/generated/uapi -Iinclude/uapi -I./include/generated/uapi -include include/linux/compiler-version.h -include include/linux/kconfig.h -include include/linux/compiler_types.h -D__KERNEL__ --target=powerpc64le-linux-gnu -fintegrated-as -Werror=unknown-warning-option -Werror=ignored-optimization-argument -Werror=option-ignored -Werror=unused-command-line-argument -mbig-endian -m32 -I arch/powerpc -DHAVE_AS_ATHIGH=1 -fmacro-prefix-map== -Wundef -DKBUILD_EXTRA_WARN1 -fshort-wchar -funsigned-char -fno-common -fno-PIE -fno-strict-aliasing -std=gnu11 -fms-anonymous-structs -Wno-gnu -Wno-microsoft-anon-tag -msoft-float -mcpu=powerpc -mno-prefixed -mno-pcrel -mno-altivec -mno-vsx -mno-mma -mno-spe -fno-asynchronous-unwind-tables -mbig-endian -fno-delete-null-pointer-checks -Os -fstack-protector-strong -fomit-frame-pointer -falloc-token-max=16 -fexperimental-late-parse-attributes -fdiagnostics-show-inlining-chain -falign-functions=4 -fstrict-flex-arrays=3 -fno-strict-overflow -fno-stack-check -fno-builtin-wcslen -Wall -Wextra -Wundef -Werror=implicit-function-declaration -Werror=implicit-int -Werror=return-type -Werror=strict-prototypes -Wno-format-security -Wno-trigraphs -Wno-frame-address -Wno-address-of-packed-member -Wmissing-declarations -Wmissing-prototypes -Wframe-larger-than=8192 -Wno-format-overflow-non-kprintf -Wno-format-truncation-non-kprintf -Wno-default-const-init-unsafe -Wno-type-limits -Wno-pointer-sign -Wcast-function-type -Wno-unterminated-string-initialization -Wimplicit-fallthrough -Werror=date-time -Werror=incompatible-pointer-types -Wenum-conversion -Wunused -Wmissing-format-attribute -Wmissing-include-dirs -Wunused-const-variable -Wno-missing-field-initializers -Wno-shift-negative-value -Wno-enum-enum-conversion -Wno-sign-compare -Wno-unused-parameter -fno-crash-diagnostics -Wno-error=return-type -Wreturn-type -funsigned-char -Wundef -falign-functions=64 -mstack-protector-guard=tls -mstack-protector-guard-reg=r2 -mstack-protector-guard-offset=968 -Wno-unused-but-set-variable -fsanitize=kernel-address -mllvm -asan-mapping-offset=0xe0000000 -mllvm -asan-instrumentation-with-call-threshold=0 -mllvm -asan-stack=0 -mllvm -asan-globals=1 -mllvm -asan-kernel-mem-intrinsic-prefix=1 -fdebug-info-for-profiling -mllvm -enable-fs-discriminator=true -mllvm -improved-fs-discriminator=true -gmlt -Ikernel/sched -Ikernel/sched -DKBUILD_MODFILE=\"kernel/sched/fair\" -DKBUILD_BASENAME=\"fair\" -DKBUILD_MODNAME=\"fair\" -D__KBUILD_MODNAME=fair -c -o kernel/sched/fair.o kernel/sched/fair.c
   1.	<eof> parser at end of file
   2.	Code generation
   3.	Running pass 'Function Pass Manager' on module 'kernel/sched/fair.c'.
   4.	Running pass 'PowerPC DAG->DAG Pattern Instruction Selection' on function '@__dequeue_task'
   #0 0x000056025a05f13a llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (clang-23+0x3e6913a)
   #1 0x000056025a05cce4 llvm::sys::CleanupOnSignal(unsigned long) (clang-23+0x3e66ce4)
   #2 0x0000560259f91cc0 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
   #3 0x00007fb545a67df0 (/lib/x86_64-linux-gnu/libc.so.6+0x3fdf0)
   #4 0x00005602584ab382 widenVec(llvm::SelectionDAG&, llvm::SDValue, llvm::SDLoc const&) PPCISelLowering.cpp:0:0
   #5 0x00005602584ecb93 llvm::PPCTargetLowering::LowerTRUNCATEVector(llvm::SDValue, llvm::SelectionDAG&) const (clang-23+0x22f6b93)
   #6 0x0000560264f2b120
   clang: error: clang frontend command failed due to signal (use -v to see invocation)
>> /bin/bash: line 1: 3715679 Segmentation fault      clang -Wp,-MMD,kernel/sched/.fair.o.d -nostdinc -Iarch/powerpc/include -I./arch/powerpc/include/generated -Iinclude -I./include -Iarch/powerpc/include/uapi -I./arch/powerpc/include/generated/uapi -Iinclude/uapi -I./include/generated/uapi -include include/linux/compiler-version.h -include include/linux/kconfig.h -include include/linux/compiler_types.h -D__KERNEL__ --target=powerpc64le-linux-gnu -fintegrated-as -Werror=unknown-warning-option -Werror=ignored-optimization-argument -Werror=option-ignored -Werror=unused-command-line-argument -mbig-endian -m32 -I arch/powerpc -DHAVE_AS_ATHIGH=1 -fmacro-prefix-map== -Wundef -DKBUILD_EXTRA_WARN1 -fshort-wchar -funsigned-char -fno-common -fno-PIE -fno-strict-aliasing -std=gnu11 -fms-anonymous-structs -Wno-gnu -Wno-microsoft-anon-tag -msoft-float -mcpu=powerpc -mno-prefixed -mno-pcrel -mno-altivec -mno-vsx -mno-mma -mno-spe -fno-asynchronous-unwind-tables -mbig-endian -fno-delete-null-pointer-checks -Os -fstack-protector-strong -fomit-frame-pointer -falloc-token-max=16 -fexperimental-late-parse-attributes -fdiagnostics-show-inlining-chain -falign-functions=4 -fstrict-flex-arrays=3 -fno-strict-overflow -fno-stack-check -fno-builtin-wcslen -Wall -Wextra -Wundef -Werror=implicit-function-declaration -Werror=implicit-int -Werror=return-type -Werror=strict-prototypes -Wno-format-security -Wno-trigraphs -Wno-frame-address -Wno-address-of-packed-member -Wmissing-declarations -Wmissing-prototypes -Wframe-larger-than=8192 -Wno-format-overflow-non-kprintf -Wno-format-truncation-non-kprintf -Wno-default-const-init-unsafe -Wno-type-limits -Wno-pointer-sign -Wcast-function-type -Wno-unterminated-string-initialization -Wimplicit-fallthrough -Werror=date-time -Werror=incompatible-pointer-types -Wenum-conversion -Wunused -Wmissing-format-attribute -Wmissing-include-dirs -Wunused-const-variable -Wno-missing-field-initializers -Wno-shift-negative-value -Wno-enum-enum-conversion -Wno-sign-compare -Wno-unused-parameter -fno-crash-diagnostics -Wno-error=return-type -Wreturn-type -funsigned-char -Wundef -falign-functions=64 -mstack-protector-guard=tls -mstack-protector-guard-reg=r2 -mstack-protector-guard-offset=968 -Wno-unused-but-set-variable -fsanitize=kernel-address -mllvm -asan-mapping-offset=0xe0000000 -mllvm -asan-instrumentation-with-call-threshold=0 -mllvm -asan-stack=0 -mllvm -asan-globals=1 -mllvm -asan-kernel-mem-intrinsic-prefix=1 -fdebug-info-for-profiling -mllvm -enable-fs-discriminator=true -mllvm -improved-fs-discriminator=true -gmlt -Ikernel/sched -Ikernel/sched -DKBUILD_MODFILE='"kernel/sched/fair"' -DKBUILD_BASENAME='"fair"' -DKBUILD_MODNAME='"fair"' -D__KBUILD_MODNAME=fair -c -o kernel/sched/fair.o kernel/sched/fair.c

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