On Fri, Jan 15, 2021 at 9:59 PM Josh Poimboeuf <jpoim...@redhat.com> wrote: > > On Fri, Jan 15, 2021 at 09:19:16PM +0100, Sedat Dilek wrote: > > > > vmlinux.o: warning: objtool: balance_leaf_when_delete()+0x17d4: stack > > > > state mismatch: cfa1=7+192 cfa2=7+176 > > > > vmlinux.o: warning: objtool: internal_move_pointers_items()+0x9f7: > > > > stack state mismatch: cfa1=7+160 cfa2=7+176 > > > > vmlinux.o: warning: objtool: strncpy_from_user()+0x181: call to > > > > do_strncpy_from_user() with UACCESS enabled > > > > vmlinux.o: warning: objtool: strnlen_user()+0x12b: call to > > > > do_strnlen_user() with UACCESS enabled > > > > vmlinux.o: warning: objtool: i915_gem_execbuffer2_ioctl()+0x390: call > > > > to __ubsan_handle_negate_overflow() with UACCESS enabled > > > > vmlinux.o: warning: objtool: .text.snd_trident_free_voice: unexpected > > > > end of section > > > > > > > > I haven't had a chance to take a closer look yet, but some of these > > > > are probably related to > > > > https://github.com/ClangBuiltLinux/linux/issues/1192. However, I can > > > > reproduce these also with ToT Clang, not just with Clang 11. > > > > > > Thanks, I'm able to reproduce these. Will take a look. > > > > > > > AFAICS, that misses the v2 diff (see attachment) you sent me when > > dealing with objtool-vmlinux and clang-cfi. > > It does not cleanly apply with the combination of your objtool-vmlinux > > Git and clang-cfi Git. > > Patches 11 and 12 should in theory have the same functionality as that > diff. I just refactored the code a bit before posting. >
Just realized that when looking at "objtool: Add CONFIG_CFI_CLANG support" in your tree. - Sedat -
