On Thu, Jul 18, 2019 at 1:40 PM Thomas Gleixner <t...@linutronix.de> wrote: > after picking up Josh's objtool updates I gave clang a test ride again.
Thanks for testing and the reports; these are valuable and we appreciate the help debugging them. > 2) debian distro config Is this checked into the tree, or where can I find it? > > objtool warnings: > > drivers/gpu/drm/amd/amdgpu/atom.o: warning: objtool: atom_op_move() falls > through to next function atom_op_and() > drivers/infiniband/hw/hfi1/platform.o: warning: objtool: tune_serdes() > falls through to next function apply_tx_lanes() > drivers/gpu/drm/i915/gem/i915_gem_execbuffer.o: warning: objtool: > .altinstr_replacement+0x86: redundant UACCESS disable > drivers/gpu/drm/radeon/evergreen_cs.o: warning: objtool: > evergreen_cs_parse() falls through to next function evergreen_dma_cs_parse() fall through warnings look new to me, but Linaro's KernelCI is currently screaming with tons of reports of -Wfallthrough throughout the kernel. I assume they're related? > 3) allmodconfig: > > objtool warnings: > > arch/x86/kernel/signal.o: warning: objtool: x32_setup_rt_frame()+0x255: > call to memset() with UACCESS enabled > arch/x86/kernel/signal.o: warning: objtool: __setup_rt_frame()+0x254: call > to memset() with UACCESS enabled > arch/x86/ia32/ia32_signal.o: warning: objtool: ia32_setup_rt_frame()+0x247: > call to memset() with UACCESS enabled > > mm/kasan/common.o: warning: objtool: kasan_report()+0x52: call to > __stack_chk_fail() with UACCESS enabled > drivers/ata/sata_dwc_460ex.o: warning: objtool: > sata_dwc_bmdma_start_by_tag()+0x3a0: can't find switch jump table > > lib/ubsan.o: warning: objtool: __ubsan_handle_type_mismatch()+0x88: call to > memset() with UACCESS enabled > lib/ubsan.o: warning: objtool: ubsan_type_mismatch_common()+0x610: call to > __stack_chk_fail() with UACCESS enabled > lib/ubsan.o: warning: objtool: __ubsan_handle_type_mismatch_v1()+0x88: call > to memset() with UACCESS enabled > drivers/gpu/drm/i915/gem/i915_gem_execbuffer.o: warning: objtool: > .altinstr_replacement+0x56: redundant UACCESS disable Do you still have these object files laying around? Josh asked for them in a new thread (from the previous thread), not sure if it's ok to attach object files to emails to LKML? (html email is not allowed, are binary attachments?) -- Thanks, ~Nick Desaulniers
