On Fri, Jan 15, 2021 at 07:54:29PM +0100, Sedat Dilek wrote: > > > I tried this series on top of clang-cfi and it segfaults here. > > > > > > + info OBJTOOL vmlinux.o > > > + [ != silent_ ] > > > + printf %-7s %s\n OBJTOOL vmlinux.o > > > OBJTOOL vmlinux.o > > > + tools/objtool/objtool orc generate --duplicate --mcount --vmlinux > > > --no-fp --no-unreachable --retpoline --uaccess vmlinux.o > > > Segmentation fault > > > + on_exit > > > + [ 139 -ne 0 ] > > > + cleanup > > > + rm -f .btf.* > > > + rm -f .tmp_System.map > > > + rm -f .tmp_initcalls.lds > > > + rm -f .tmp_symversions.lds > > > + rm -f .tmp_vmlinux* > > > + rm -f System.map > > > + rm -f vmlinux > > > + rm -f vmlinux.o > > > make[3]: *** [Makefile:1213: vmlinux] Error 139 > > > > > > > I re-tried with the latest clang-lto Git and switched to Debian's > > LLVM-11.0.1. > > This build was successful. > > No objtool-vmlinux warnings observed. > > > > In the next step I try with my selfmade LLVM-11.1.0-rc1 (to see if it's > > broken). > > > > Good, my selfmade LLVM-11.1.0-rc1 is not broken with clang-lto. > > + info OBJTOOL vmlinux.o > + [ != silent_ ] > + printf %-7s %s\n OBJTOOL vmlinux.o > OBJTOOL vmlinux.o > + tools/objtool/objtool orc generate --duplicate --mcount --vmlinux > --no-fp --no-unreachable --retpoline --uaccess vmlinux.o > + make -f ./scripts/Makefile.modpost MODPOST_VMLINUX=1 > scripts/mod/modpost -m -o vmlinux.symvers vmlinux.o > + info MODINFO modules.builtin.modinfo > > Josh and Sami, any idea what's going on with clang-cfi an this patchset?
No idea, I haven't seen this. Are you still able to recreate? -- Josh
