How To Fix Unable To Load Vgcore Error Code 127 [ FHD ]
valgrind --vgcore=no ./your_program Or use a different core dump mechanism:
: Recompile Valgrind inside the target sysroot using --with-sysroot :
ldd $(find /usr -name vgcore 2>/dev/null | head -1) || echo "vgcore not found or broken" how to fix unable to load vgcore error code 127
sudo dnf install glibc-debuginfo glibc-debuginfo-common :
# Debian/Ubuntu sudo apt purge valgrind sudo apt install valgrind wget https://sourceware.org/pub/valgrind/valgrind-3.22.0.tar.bz2 tar -xf valgrind-3.22.0.tar.bz2 cd valgrind-3.22.0 ./configure --prefix=/usr/local make sudo make install 4.3 Tier 3: Manual vgcore Rebuild If the precompiled vgcore is incompatible (e.g., on musl libc or non-x86 architectures): valgrind --vgcore=no
A healthy output shows all libraries found. Error 127 often appears as not found next to a critical library. 4.1 Tier 1: Environment Integrity Fix missing libraries – Install debug symbols (Debian/Ubuntu):
unset LD_LIBRARY_PATH # Or run Valgrind with a clean environment env -i PATH="$PATH" HOME="$HOME" valgrind ./your_program Corrupted installations are common after partial upgrades. Completely remove and reinstall: Completely remove and reinstall: # Check Valgrind version
# Check Valgrind version and installation path which valgrind valgrind --version ls -l $(dirname $(which valgrind))/../libexec/valgrind/vgcore Test library dependencies of vgcore ldd $(dirname $(which valgrind))/../libexec/valgrind/vgcore
vgcore: error while loading shared libraries: libc.so.6: cannot open shared object file: Error 127 : Valgrind’s vgcore was built against host glibc but executed inside a chroot/sysroot with an older glibc.
./configure --host=arm-linux-gnueabihf --with-sysroot=/path/to/sysroot make && make install DESTDIR=/path/to/sysroot Then execute Valgrind with the correct library path:
cd /tmp cp $(dirname $(which valgrind))/../libexec/valgrind/vgcore vgcore.orig sudo gcc -static -o /usr/local/libexec/valgrind/vgcore /usr/src/valgrind/coregrind/vgcore.c Note : Requires Valgrind source tree. This forces a statically linked vgcore , eliminating library dependencies entirely. If the error persists and core dumps are not essential, disable vgcore generation: