On Tue, Sep 15, 2020 at 10:21 AM Borislav Petkov <b...@alien8.de> wrote: > > On Tue, Sep 15, 2020 at 12:02:48PM -0500, Josh Poimboeuf wrote: > > If somebody can share the .o file, I can take a look. > > If only I could reproduce... > > So I built: > > /home/share/src/llvm/tc-build/install/bin/clang-12 --version > ClangBuiltLinux clang version 12.0.0 (https://github.com/llvm/llvm-project > 74a9c6d7e1c49cd0e3a8e8072b8aa03f7a84caff) > Target: x86_64-unknown-linux-gnu > Thread model: posix > InstalledDir: /home/share/src/llvm/tc-build/install/bin > > and I don't trigger that warning even with that compiler. > > What I do get is a lot of those pairs: > > init/calibrate.o: warning: objtool: asan.module_ctor()+0xc: call without > frame pointer save/setup > init/calibrate.o: warning: objtool: asan.module_dtor()+0xc: call without > frame pointer save/setup > init/version.o: warning: objtool: asan.module_ctor()+0xc: call without frame > pointer save/setup > init/version.o: warning: objtool: asan.module_dtor()+0xc: call without frame > pointer save/setup > certs/system_keyring.o: warning: objtool: asan.module_ctor()+0xc: call > without frame pointer save/setup > certs/system_keyring.o: warning: objtool: asan.module_dtor()+0xc: call > without frame pointer save/setup
+ Kernel-dynamic-tools > ... > > and a link fail at the end. > > ld: arch/x86/events/core.o: in function `events_sysfs_show': > core.c:(.text+0x469b): undefined reference to `stpcpy' > ld: arch/x86/events/core.o: in function `events_ht_sysfs_show': > core.c:(.text+0x46f7): undefined reference to `stpcpy' > ld: drivers/tty/tty_io.o: in function `alloc_tty_struct': > tty_io.c:(.text+0x2da5): undefined reference to `stpcpy' > ld: drivers/tty/tty_io.o: in function `tty_register_device_attr': > tty_io.c:(.text+0x6a09): undefined reference to `stpcpy' > ld: drivers/tty/tty_io.o: in function `show_cons_active': > tty_io.c:(.text+0xa819): undefined reference to `stpcpy' > ld: drivers/scsi/scsi_transport_sas.o:scsi_transport_sas.c:(.text+0x6139): > more undefined references to `stpcpy' follow > make: *** [Makefile:1166: vmlinux] Error 1 b4 am https://lore.kernel.org/lkml/20200914161643.938408-1-ndesaulni...@google.com/ -o | git am > > > I'm thinking clang12 is too unstable to take it seriously... -- Thanks, ~Nick Desaulniers